--- a/stage4/generate_c/search_type_code.c	Mon Jan 19 08:28:04 2009 +0100
+++ b/stage4/generate_c/search_type_code.c	Mon Jan 19 17:06:22 2009 +0100
@@ -58,14 +58,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -91,14 +94,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -124,14 +130,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -157,14 +166,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -190,14 +202,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -223,14 +238,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -256,14 +274,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -289,14 +310,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -322,14 +346,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -355,14 +382,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -388,14 +418,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -421,14 +454,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -454,14 +490,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -487,14 +526,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -520,14 +562,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -553,14 +598,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -586,14 +634,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -619,14 +670,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -652,14 +706,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -685,14 +742,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -718,14 +778,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -751,14 +814,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -784,14 +850,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -817,14 +886,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -850,14 +922,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -883,14 +958,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -916,14 +994,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -949,14 +1030,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -982,14 +1066,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -1015,14 +1102,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -1048,14 +1138,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -1081,14 +1174,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -1114,14 +1210,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -1147,14 +1246,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -1180,14 +1282,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -1213,14 +1318,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -1246,14 +1354,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -1279,14 +1390,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -1312,14 +1426,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -1345,14 +1462,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -1378,14 +1498,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -1411,14 +1534,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -1444,14 +1570,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -1477,14 +1606,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -1510,14 +1642,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -1543,14 +1678,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -1576,14 +1714,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -1609,14 +1750,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -1642,14 +1786,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -1675,14 +1822,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -1708,14 +1858,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -1741,14 +1894,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -1774,14 +1930,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -1807,14 +1966,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -1840,14 +2002,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -1873,14 +2038,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -1906,14 +2074,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -1939,14 +2110,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -1972,14 +2146,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -2005,14 +2182,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -2038,14 +2218,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -2071,14 +2254,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -2104,14 +2290,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -2137,14 +2326,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -2170,14 +2362,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -2203,14 +2398,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -2236,14 +2434,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -2269,14 +2470,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -2302,14 +2506,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -2335,14 +2542,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -2368,14 +2578,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -2401,14 +2614,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -2434,14 +2650,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -2467,14 +2686,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -2500,14 +2722,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -2533,14 +2758,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -2566,14 +2794,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -2599,14 +2830,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -2632,14 +2866,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -2665,14 +2902,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -2698,14 +2938,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -2731,14 +2974,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -2764,14 +3010,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -2797,14 +3046,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -2830,14 +3082,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -2863,14 +3118,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -2896,14 +3154,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -2929,14 +3190,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -2962,14 +3226,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -2995,14 +3262,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -3028,14 +3298,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -3061,14 +3334,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -3094,14 +3370,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -3127,14 +3406,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -3160,14 +3442,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -3193,14 +3478,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -3226,14 +3514,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -3259,14 +3550,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -3292,14 +3586,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -3325,14 +3622,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -3358,14 +3658,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -3391,14 +3694,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -3424,14 +3730,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -3457,14 +3766,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -3490,14 +3802,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -3523,14 +3838,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -3556,14 +3874,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -3589,14 +3910,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -3622,14 +3946,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -3655,14 +3982,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -3688,14 +4018,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -3721,14 +4054,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -3754,14 +4090,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -3787,14 +4126,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -3820,14 +4162,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -3853,14 +4198,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -3886,14 +4234,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -3919,14 +4270,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -3952,14 +4306,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -3985,14 +4342,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -4018,14 +4378,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -4051,14 +4414,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -4084,14 +4450,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -4117,14 +4486,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -4150,14 +4522,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -4183,14 +4558,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -4216,14 +4594,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -4249,14 +4630,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -4282,14 +4666,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -4315,14 +4702,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -4348,14 +4738,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -4381,14 +4774,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -4414,14 +4810,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -4447,14 +4846,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -4480,14 +4882,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -4513,14 +4918,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -4546,14 +4954,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -4579,14 +4990,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -4612,14 +5026,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -4645,14 +5062,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -4678,14 +5098,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -4711,14 +5134,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -4744,14 +5170,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -4777,14 +5206,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -4810,14 +5242,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -4843,14 +5278,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -4876,14 +5314,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -4909,14 +5350,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -4942,14 +5386,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -4975,14 +5422,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -5008,14 +5458,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -5041,14 +5494,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -5074,14 +5530,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -5107,14 +5566,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -5140,14 +5602,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -5173,14 +5638,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -5206,14 +5674,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -5239,14 +5710,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -5272,14 +5746,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -5305,14 +5782,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -5338,14 +5818,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -5371,14 +5854,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -5404,14 +5890,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -5437,14 +5926,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -5470,14 +5962,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -5503,14 +5998,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -5536,14 +6034,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -5569,14 +6070,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -5602,14 +6106,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -5635,14 +6142,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -5668,14 +6178,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -5701,14 +6214,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -5734,14 +6250,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -5767,14 +6286,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -5800,14 +6322,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -5833,14 +6358,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -5866,14 +6394,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -5899,14 +6430,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -5932,14 +6466,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -5965,14 +6502,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -5998,14 +6538,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -6031,14 +6574,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -6064,14 +6610,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -6097,14 +6646,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -6130,14 +6682,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -6163,14 +6718,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -6196,14 +6754,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -6229,14 +6790,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -6262,14 +6826,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -6295,14 +6862,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -6328,14 +6898,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -6361,14 +6934,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -6394,14 +6970,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -6427,14 +7006,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -6460,14 +7042,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -6493,14 +7078,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -6526,14 +7114,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -6559,14 +7150,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -6592,14 +7186,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -6625,14 +7222,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -6658,14 +7258,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -6691,14 +7294,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -6724,14 +7330,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -6757,14 +7366,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -6790,14 +7402,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -6823,14 +7438,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -6856,14 +7474,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -6889,14 +7510,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -6922,14 +7546,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -6955,14 +7582,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -6988,14 +7618,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -7021,14 +7654,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -7054,14 +7690,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -7087,14 +7726,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -7120,14 +7762,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -7153,14 +7798,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -7186,14 +7834,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -7219,14 +7870,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -7252,14 +7906,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -7285,14 +7942,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -7318,14 +7978,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -7351,14 +8014,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -7384,14 +8050,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -7417,14 +8086,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -7450,14 +8122,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -7483,14 +8158,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -7516,14 +8194,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -7549,14 +8230,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -7582,14 +8266,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -7615,14 +8302,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -7648,14 +8338,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -7681,14 +8374,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -7714,14 +8410,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -7747,14 +8446,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -7780,14 +8482,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -7813,14 +8518,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -7846,14 +8554,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -7879,14 +8590,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -7912,14 +8626,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -7945,14 +8662,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -7978,14 +8698,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -8011,14 +8734,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -8044,14 +8770,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -8077,14 +8806,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -8110,14 +8842,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -8143,14 +8878,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -8176,14 +8914,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -8209,14 +8950,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -8242,14 +8986,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -8275,14 +9022,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -8308,14 +9058,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -8341,14 +9094,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -8374,14 +9130,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -8407,14 +9166,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -8440,14 +9202,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -8473,14 +9238,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -8506,14 +9274,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -8539,14 +9310,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -8572,14 +9346,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -8605,14 +9382,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -8638,14 +9418,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -8671,14 +9454,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -8704,14 +9490,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -8737,14 +9526,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -8770,14 +9562,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -8803,14 +9598,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -8836,14 +9634,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -8869,14 +9670,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -8902,14 +9706,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -8935,14 +9742,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -8968,14 +9778,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -9001,14 +9814,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -9034,14 +9850,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -9067,14 +9886,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -9100,14 +9922,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -9133,14 +9958,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -9166,14 +9994,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -9199,14 +10030,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -9232,14 +10066,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -9265,14 +10102,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -9298,14 +10138,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -9331,14 +10174,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -9364,14 +10210,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -9397,14 +10246,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -9430,14 +10282,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -9463,14 +10318,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -9496,14 +10354,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -9529,14 +10390,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -9562,14 +10426,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -9595,14 +10462,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -9628,14 +10498,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -9661,14 +10534,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -9694,14 +10570,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -9727,14 +10606,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -9760,14 +10642,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -9793,14 +10678,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -9826,14 +10714,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -9859,14 +10750,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -9892,14 +10786,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -9925,14 +10822,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -9958,14 +10858,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -9991,14 +10894,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -10024,14 +10930,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -10057,14 +10966,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -10090,14 +11002,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -10123,14 +11038,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -10156,14 +11074,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -10189,14 +11110,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -10222,14 +11146,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -10255,14 +11182,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -10288,14 +11218,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -10321,14 +11254,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -10354,14 +11290,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -10387,14 +11326,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -10420,14 +11362,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -10453,14 +11398,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -10486,14 +11434,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -10519,14 +11470,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -10552,14 +11506,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -10585,14 +11542,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -10618,14 +11578,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -10651,14 +11614,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -10684,14 +11650,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -10717,14 +11686,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -10750,14 +11722,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -10783,14 +11758,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -10816,14 +11794,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -10849,14 +11830,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -10882,14 +11866,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -10915,14 +11902,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -10948,14 +11938,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -10981,14 +11974,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -11014,14 +12010,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -11047,14 +12046,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -11080,14 +12082,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -11113,14 +12118,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -11146,14 +12154,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -11179,14 +12190,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -11212,14 +12226,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -11245,14 +12262,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -11278,14 +12298,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -11311,14 +12334,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -11344,14 +12370,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -11377,14 +12406,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -11410,14 +12442,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -11443,14 +12478,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -11476,14 +12514,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -11509,14 +12550,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -11542,14 +12586,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -11575,14 +12622,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -11608,14 +12658,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -11641,14 +12694,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -11674,14 +12730,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -11707,14 +12766,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -11740,14 +12802,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -11773,14 +12838,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -11806,14 +12874,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -11839,14 +12910,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -11872,14 +12946,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -11905,14 +12982,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -11938,14 +13018,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -11971,14 +13054,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -12004,14 +13090,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -12037,14 +13126,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -12070,14 +13162,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -12103,14 +13198,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -12136,14 +13234,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -12169,14 +13270,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -12202,14 +13306,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -12235,14 +13342,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -12268,14 +13378,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -12301,14 +13414,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -12334,14 +13450,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -12367,14 +13486,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -12400,14 +13522,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -12433,14 +13558,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_num_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_num_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12466,14 +13594,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12499,14 +13630,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12532,14 +13666,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12565,14 +13702,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12598,14 +13738,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12631,14 +13774,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12664,14 +13810,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12697,14 +13846,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12730,14 +13882,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12763,14 +13918,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -12796,28 +13954,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -12831,21 +13995,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -12859,21 +14026,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -12887,21 +14057,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -12933,28 +14106,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -12968,21 +14147,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -13014,28 +14196,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -13049,21 +14237,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -13077,21 +14268,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -13099,7 +14293,7 @@
                         
                     }
                     
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -13113,21 +14307,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -13135,7 +14332,7 @@
                         
                     }
                     
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -13149,21 +14346,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -13195,28 +14395,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -13230,21 +14436,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -13276,28 +14485,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -13329,28 +14544,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_real_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_real_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -13382,12 +14603,15 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
             
             
             {
@@ -13415,28 +14639,34 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_binary_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_binary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -13468,28 +14698,34 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_binary_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_binary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -13521,28 +14757,34 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_nbinary_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_nbinary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -13574,28 +14816,34 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_nbinary_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_nbinary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -13627,28 +14875,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_binary_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_binary_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_binary_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_binary_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -13680,28 +14934,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_binary_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_binary_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_binary_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_binary_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -13733,28 +14993,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_binary_type(IN1_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_binary_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_binary_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_binary_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -13786,14 +15052,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_binary_type(IN_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_binary_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -13819,26 +15088,32 @@
             identifier_c param_name("G");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *G_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *G_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (G_param_value == NULL)
               G_param_value = function_call_param_iterator.next();
-            symbol_c *G_type_symbol = search_expression_type->get_type(G_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(G_type_symbol, last_type_symbol) ? search_expression_type->common_type(G_type_symbol, last_type_symbol) : G_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if (G_param_value != NULL) {
+              G_type_symbol = search_expression_type->get_type(G_param_value);
+              last_type_symbol = last_type_symbol && G_type_symbol && search_expression_type->is_same_type(G_type_symbol, last_type_symbol) ? search_expression_type->common_type(G_type_symbol, last_type_symbol) : G_type_symbol ;
+            }
+            
+            if(G_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN0");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN0_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN0_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN0_param_value == NULL)
                       IN0_param_value = function_call_param_iterator.next();
-                    symbol_c *IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    if (IN0_param_value != NULL) {
+                      IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
+                      last_type_symbol = last_type_symbol && IN0_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    }
                     
                     
                     {
@@ -13847,12 +15122,15 @@
                             identifier_c param_name("IN1");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *IN1_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (IN1_param_value == NULL)
                               IN1_param_value = function_call_param_iterator.next();
-                            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            if (IN1_param_value != NULL) {
+                              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+                              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            }
                             
                             
                             {
@@ -13892,12 +15170,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -13906,12 +15187,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -13945,12 +15229,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -13959,12 +15246,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -13998,12 +15288,15 @@
             identifier_c param_name("MN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *MN_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *MN_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (MN_param_value == NULL)
               MN_param_value = function_call_param_iterator.next();
-            symbol_c *MN_type_symbol = search_expression_type->get_type(MN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(MN_type_symbol, last_type_symbol) ? search_expression_type->common_type(MN_type_symbol, last_type_symbol) : MN_type_symbol ;
+            if (MN_param_value != NULL) {
+              MN_type_symbol = search_expression_type->get_type(MN_param_value);
+              last_type_symbol = last_type_symbol && MN_type_symbol && search_expression_type->is_same_type(MN_type_symbol, last_type_symbol) ? search_expression_type->common_type(MN_type_symbol, last_type_symbol) : MN_type_symbol ;
+            }
             
             
             {
@@ -14012,12 +15305,15 @@
                     identifier_c param_name("IN");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN_param_value == NULL)
                       IN_param_value = function_call_param_iterator.next();
-                    symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+                    if (IN_param_value != NULL) {
+                      IN_type_symbol = search_expression_type->get_type(IN_param_value);
+                      last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+                    }
                     
                     
                     {
@@ -14026,12 +15322,15 @@
                             identifier_c param_name("MX");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *MX_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *MX_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (MX_param_value == NULL)
                               MX_param_value = function_call_param_iterator.next();
-                            symbol_c *MX_type_symbol = search_expression_type->get_type(MX_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(MX_type_symbol, last_type_symbol) ? search_expression_type->common_type(MX_type_symbol, last_type_symbol) : MX_type_symbol ;
+                            if (MX_param_value != NULL) {
+                              MX_type_symbol = search_expression_type->get_type(MX_param_value);
+                              last_type_symbol = last_type_symbol && MX_type_symbol && search_expression_type->is_same_type(MX_type_symbol, last_type_symbol) ? search_expression_type->common_type(MX_type_symbol, last_type_symbol) : MX_type_symbol ;
+                            }
                             
                             
                             {
@@ -14071,26 +15370,32 @@
             identifier_c param_name("K");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *K_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *K_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (K_param_value == NULL)
               K_param_value = function_call_param_iterator.next();
-            symbol_c *K_type_symbol = search_expression_type->get_type(K_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(K_type_symbol, last_type_symbol) ? search_expression_type->common_type(K_type_symbol, last_type_symbol) : K_type_symbol ;
-            
-            if(search_expression_type->is_integer_type(K_type_symbol))
+            if (K_param_value != NULL) {
+              K_type_symbol = search_expression_type->get_type(K_param_value);
+              last_type_symbol = last_type_symbol && K_type_symbol && search_expression_type->is_same_type(K_type_symbol, last_type_symbol) ? search_expression_type->common_type(K_type_symbol, last_type_symbol) : K_type_symbol ;
+            }
+            
+            if(K_type_symbol == NULL || search_expression_type->is_integer_type(K_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN0");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN0_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN0_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN0_param_value == NULL)
                       IN0_param_value = function_call_param_iterator.next();
-                    symbol_c *IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    if (IN0_param_value != NULL) {
+                      IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
+                      last_type_symbol = last_type_symbol && IN0_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    }
                     
                     
                     {
@@ -14099,12 +15404,15 @@
                             identifier_c param_name("IN1");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *IN1_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (IN1_param_value == NULL)
                               IN1_param_value = function_call_param_iterator.next();
-                            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            if (IN1_param_value != NULL) {
+                              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+                              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            }
                             
                             
                             {
@@ -14144,12 +15452,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -14158,12 +15469,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -14197,12 +15511,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -14211,12 +15528,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -14250,12 +15570,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -14264,12 +15587,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -14303,12 +15629,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -14317,12 +15646,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -14356,12 +15688,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -14370,12 +15705,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -14409,12 +15747,15 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
             
             
             {
@@ -14423,12 +15764,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -14462,14 +15806,17 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -14495,28 +15842,34 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -14548,28 +15901,34 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -14601,42 +15960,51 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("P");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *P_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (P_param_value == NULL)
                               P_param_value = function_call_param_iterator.next();
-                            symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            if (P_param_value != NULL) {
+                              P_type_symbol = search_expression_type->get_type(P_param_value);
+                              last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(P_type_symbol))
+                            if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                             {
                         
                                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -14674,28 +16042,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -14709,21 +16083,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -14755,42 +16132,51 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("P");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *P_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (P_param_value == NULL)
                               P_param_value = function_call_param_iterator.next();
-                            symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            if (P_param_value != NULL) {
+                              P_type_symbol = search_expression_type->get_type(P_param_value);
+                              last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(P_type_symbol))
+                            if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                             {
                         
                                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -14828,42 +16214,51 @@
             identifier_c param_name("IN");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
-            
-            /* Get the value from a foo(<param_value>) style call */
-            if (IN_param_value == NULL)
-              IN_param_value = function_call_param_iterator.next();
-            symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            symbol_c *IN_type_symbol = NULL;
+            
+            /* Get the value from a foo(<param_value>) style call */
+            if (IN_param_value == NULL)
+              IN_param_value = function_call_param_iterator.next();
+            if (IN_param_value != NULL) {
+              IN_type_symbol = search_expression_type->get_type(IN_param_value);
+              last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+            }
+            
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("P");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *P_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (P_param_value == NULL)
                               P_param_value = function_call_param_iterator.next();
-                            symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            if (P_param_value != NULL) {
+                              P_type_symbol = search_expression_type->get_type(P_param_value);
+                              last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(P_type_symbol))
+                            if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                             {
                         
                                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -14901,56 +16296,68 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("L");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *L_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (L_param_value == NULL)
                               L_param_value = function_call_param_iterator.next();
-                            symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                            if (L_param_value != NULL) {
+                              L_type_symbol = search_expression_type->get_type(L_param_value);
+                              last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(L_type_symbol))
+                            if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                             {
                         
                                 {
                                     identifier_c param_name("P");
                                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                                     symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                                    symbol_c *P_type_symbol = NULL;
                                     
                                     /* Get the value from a foo(<param_value>) style call */
                                     if (P_param_value == NULL)
                                       P_param_value = function_call_param_iterator.next();
-                                    symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                                    if (P_param_value != NULL) {
+                                      P_type_symbol = search_expression_type->get_type(P_param_value);
+                                      last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                                    }
                                     
-                                    if(search_expression_type->is_integer_type(P_type_symbol))
+                                    if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                                     {
                                 
                                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -14994,28 +16401,34 @@
             identifier_c param_name("IN1");
             /* Get the value from a foo(<param_name> = <param_value>) style call */
             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+            symbol_c *IN1_type_symbol = NULL;
             
             /* Get the value from a foo(<param_value>) style call */
             if (IN1_param_value == NULL)
               IN1_param_value = function_call_param_iterator.next();
-            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
-            
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if (IN1_param_value != NULL) {
+              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+            }
+            
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -15061,7 +16474,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -15087,7 +16500,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -15113,7 +16526,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -15139,7 +16552,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -15165,7 +16578,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -15191,7 +16604,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -15217,7 +16630,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -15243,7 +16656,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -15269,7 +16682,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -15295,7 +16708,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -15321,7 +16734,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -15347,7 +16760,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -15373,7 +16786,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -15399,7 +16812,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -15425,7 +16838,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -15451,7 +16864,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -15477,7 +16890,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -15503,7 +16916,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -15529,7 +16942,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::real_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -15555,7 +16968,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -15581,7 +16994,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -15607,7 +17020,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -15633,7 +17046,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -15659,7 +17072,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -15685,7 +17098,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -15711,7 +17124,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -15737,7 +17150,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -15763,7 +17176,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -15789,7 +17202,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -15815,7 +17228,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -15841,7 +17254,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -15867,7 +17280,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -15893,7 +17306,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -15919,7 +17332,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -15945,7 +17358,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -15971,7 +17384,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -15997,7 +17410,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -16023,7 +17436,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::sint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -16049,7 +17462,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -16075,7 +17488,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -16101,7 +17514,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -16127,7 +17540,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -16153,7 +17566,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -16179,7 +17592,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -16205,7 +17618,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -16231,7 +17644,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -16257,7 +17670,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -16283,7 +17696,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -16309,7 +17722,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -16335,7 +17748,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -16361,7 +17774,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -16387,7 +17800,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -16413,7 +17826,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -16439,7 +17852,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -16465,7 +17878,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -16491,7 +17904,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -16517,7 +17930,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -16543,7 +17956,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -16569,7 +17982,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -16595,7 +18008,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -16621,7 +18034,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -16647,7 +18060,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -16673,7 +18086,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -16699,7 +18112,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -16725,7 +18138,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -16751,7 +18164,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -16777,7 +18190,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -16803,7 +18216,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -16829,7 +18242,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -16855,7 +18268,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -16881,7 +18294,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -16907,7 +18320,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -16933,7 +18346,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -16959,7 +18372,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -16985,7 +18398,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -17011,7 +18424,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -17037,7 +18450,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -17063,7 +18476,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -17089,7 +18502,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -17115,7 +18528,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -17141,7 +18554,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -17167,7 +18580,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -17193,7 +18606,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -17219,7 +18632,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -17245,7 +18658,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -17271,7 +18684,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -17297,7 +18710,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -17323,7 +18736,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -17349,7 +18762,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -17375,7 +18788,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -17401,7 +18814,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -17427,7 +18840,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -17453,7 +18866,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -17479,7 +18892,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -17505,7 +18918,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -17531,7 +18944,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -17557,7 +18970,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -17583,7 +18996,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -17609,7 +19022,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -17635,7 +19048,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -17661,7 +19074,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -17687,7 +19100,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -17713,7 +19126,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -17739,7 +19152,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -17765,7 +19178,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -17791,7 +19204,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -17817,7 +19230,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -17843,7 +19256,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -17869,7 +19282,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -17895,7 +19308,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -17921,7 +19334,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -17947,7 +19360,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -17973,7 +19386,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -17999,7 +19412,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -18025,7 +19438,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -18051,7 +19464,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -18077,7 +19490,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -18103,7 +19516,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -18129,7 +19542,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -18155,7 +19568,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -18181,7 +19594,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -18207,7 +19620,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -18233,7 +19646,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -18259,7 +19672,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -18285,7 +19698,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -18311,7 +19724,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -18337,7 +19750,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -18363,7 +19776,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -18389,7 +19802,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -18415,7 +19828,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -18441,7 +19854,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -18467,7 +19880,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -18493,7 +19906,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -18519,7 +19932,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -18545,7 +19958,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -18571,7 +19984,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -18597,7 +20010,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -18623,7 +20036,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -18649,7 +20062,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -18675,7 +20088,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -18701,7 +20114,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -18727,7 +20140,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -18753,7 +20166,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -18779,7 +20192,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -18805,7 +20218,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -18831,7 +20244,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -18857,7 +20270,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -18883,7 +20296,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -18909,7 +20322,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -18935,7 +20348,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -18961,7 +20374,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -18987,7 +20400,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -19013,7 +20426,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -19039,7 +20452,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -19065,7 +20478,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -19091,7 +20504,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -19117,7 +20530,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -19143,7 +20556,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -19169,7 +20582,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -19195,7 +20608,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -19221,7 +20634,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -19247,7 +20660,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -19273,7 +20686,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -19299,7 +20712,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -19325,7 +20738,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -19351,7 +20764,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -19377,7 +20790,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -19403,7 +20816,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -19429,7 +20842,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -19455,7 +20868,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -19481,7 +20894,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -19507,7 +20920,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -19533,7 +20946,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -19559,7 +20972,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -19585,7 +20998,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -19611,7 +21024,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -19637,7 +21050,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -19663,7 +21076,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -19689,7 +21102,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -19715,7 +21128,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -19741,7 +21154,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -19767,7 +21180,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -19793,7 +21206,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -19819,7 +21232,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -19845,7 +21258,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -19871,7 +21284,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -19897,7 +21310,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -19923,7 +21336,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -19949,7 +21362,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -19975,7 +21388,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -20001,7 +21414,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -20027,7 +21440,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -20053,7 +21466,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -20079,7 +21492,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -20105,7 +21518,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -20131,7 +21544,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -20157,7 +21570,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -20183,7 +21596,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -20209,7 +21622,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -20235,7 +21648,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -20261,7 +21674,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -20287,7 +21700,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -20313,7 +21726,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -20339,7 +21752,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -20365,7 +21778,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -20391,7 +21804,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -20417,7 +21830,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -20443,7 +21856,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -20469,7 +21882,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -20495,7 +21908,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -20521,7 +21934,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -20547,7 +21960,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -20573,7 +21986,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -20599,7 +22012,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -20625,7 +22038,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -20651,7 +22064,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -20677,7 +22090,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -20703,7 +22116,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -20729,7 +22142,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -20755,7 +22168,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -20781,7 +22194,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -20807,7 +22220,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -20833,7 +22246,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -20859,7 +22272,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -20885,7 +22298,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -20911,7 +22324,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -20937,7 +22350,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -20963,7 +22376,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -20989,7 +22402,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -21015,7 +22428,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -21041,7 +22454,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -21067,7 +22480,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -21093,7 +22506,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -21119,7 +22532,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -21145,7 +22558,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -21171,7 +22584,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -21197,7 +22610,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -21223,7 +22636,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -21249,7 +22662,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -21275,7 +22688,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -21301,7 +22714,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -21327,7 +22740,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -21353,7 +22766,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -21379,7 +22792,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -21405,7 +22818,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -21431,7 +22844,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -21457,7 +22870,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -21483,7 +22896,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -21509,7 +22922,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -21535,7 +22948,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -21561,7 +22974,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -21587,7 +23000,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -21613,7 +23026,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -21639,7 +23052,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lreal_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -21665,7 +23078,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -21691,7 +23104,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -21717,7 +23130,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -21743,7 +23156,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -21769,7 +23182,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -21795,7 +23208,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -21821,7 +23234,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -21847,7 +23260,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -21873,7 +23286,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -21899,7 +23312,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -21925,7 +23338,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -21951,7 +23364,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -21977,7 +23390,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -22003,7 +23416,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -22029,7 +23442,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -22055,7 +23468,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -22081,7 +23494,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -22107,7 +23520,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -22133,7 +23546,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -22159,7 +23572,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -22185,7 +23598,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -22211,7 +23624,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -22237,7 +23650,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -22263,7 +23676,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -22289,7 +23702,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -22315,7 +23728,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -22341,7 +23754,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -22367,7 +23780,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -22393,7 +23806,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -22419,7 +23832,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -22445,7 +23858,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -22471,7 +23884,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -22497,7 +23910,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -22523,7 +23936,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -22549,7 +23962,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -22575,7 +23988,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -22601,7 +24014,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -22627,7 +24040,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -22653,7 +24066,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -22679,7 +24092,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -22705,7 +24118,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -22731,7 +24144,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -22757,7 +24170,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -22783,7 +24196,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -22809,7 +24222,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -22835,7 +24248,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -22861,7 +24274,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -22887,7 +24300,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -22913,7 +24326,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -22939,7 +24352,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -22965,7 +24378,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -22991,7 +24404,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -23017,7 +24430,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -23043,7 +24456,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -23069,7 +24482,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -23095,7 +24508,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -23121,7 +24534,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -23147,7 +24560,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -23173,7 +24586,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -23199,7 +24612,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -23225,7 +24638,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -23251,7 +24664,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -23277,7 +24690,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -23303,7 +24716,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -23329,7 +24742,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -23355,7 +24768,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -23381,7 +24794,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -23407,7 +24820,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -23433,7 +24846,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -23459,7 +24872,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -23485,7 +24898,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -23511,7 +24924,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -23537,7 +24950,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -23563,7 +24976,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -23589,7 +25002,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -23615,7 +25028,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -23641,7 +25054,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -23667,7 +25080,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -23693,7 +25106,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -23719,7 +25132,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -23745,7 +25158,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -23771,7 +25184,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -23797,7 +25210,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -23823,7 +25236,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -23849,7 +25262,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -23875,7 +25288,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -23901,7 +25314,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -23927,7 +25340,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -23953,7 +25366,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -23979,7 +25392,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -24005,7 +25418,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -24031,7 +25444,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::real_type_name;
@@ -24057,7 +25470,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::sint_type_name;
@@ -24083,7 +25496,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lint_type_name;
@@ -24109,7 +25522,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dint_type_name;
@@ -24135,7 +25548,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -24161,7 +25574,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dword_type_name;
@@ -24187,7 +25600,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -24213,7 +25626,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -24239,7 +25652,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -24265,7 +25678,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::word_type_name;
@@ -24291,7 +25704,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -24317,7 +25730,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lword_type_name;
@@ -24343,7 +25756,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -24369,7 +25782,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::lreal_type_name;
@@ -24395,7 +25808,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::byte_type_name;
@@ -24421,7 +25834,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -24447,7 +25860,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -24473,7 +25886,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::bool_type_name;
@@ -24499,7 +25912,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::int_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -24525,7 +25938,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -24551,7 +25964,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::udint_type_name;
@@ -24577,7 +25990,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::word_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::uint_type_name;
@@ -24603,7 +26016,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::lword_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::ulint_type_name;
@@ -24629,7 +26042,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::byte_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::usint_type_name;
@@ -24655,7 +26068,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::udint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -24681,7 +26094,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::uint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -24707,7 +26120,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::usint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -24733,7 +26146,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::ulint_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::constant_int_type_name;
@@ -24759,7 +26172,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -24785,7 +26198,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::date_type_name;
@@ -24811,7 +26224,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_num_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_num_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -24837,7 +26250,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -24863,7 +26276,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -24889,7 +26302,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -24915,7 +26328,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -24941,7 +26354,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -24967,7 +26380,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -24993,7 +26406,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -25019,7 +26432,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -25045,7 +26458,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -25071,7 +26484,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_real_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -25097,21 +26510,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25125,21 +26541,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -25153,21 +26572,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -25181,21 +26603,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -25227,21 +26652,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25255,21 +26683,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -25301,21 +26732,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25329,21 +26763,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -25357,21 +26794,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::dt_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -25379,7 +26819,7 @@
                         
                     }
                     
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -25393,21 +26833,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -25415,7 +26858,7 @@
                         
                     }
                     
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::tod_type_name;
@@ -25429,21 +26872,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -25475,21 +26921,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25503,21 +26952,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::time_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::time_type_name;
@@ -25549,21 +27001,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_num_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_num_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25595,21 +27050,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_real_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_real_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_num_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_num_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25667,21 +27125,24 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_binary_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_binary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -25713,21 +27174,24 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_binary_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_binary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -25759,21 +27223,24 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_nbinary_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_nbinary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -25805,21 +27272,24 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_nbinary_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_nbinary_type(IN_type_symbol))
             {
         
                 {
                     identifier_c param_name("N");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *N_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *N_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (N_param_value == NULL)
                       N_param_value = function_call_param_iterator.next();
-                    symbol_c *N_type_symbol = search_expression_type->get_type(N_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(N_type_symbol))
+                    if (N_param_value != NULL) {
+                      N_type_symbol = search_expression_type->get_type(N_param_value);
+                      last_type_symbol = last_type_symbol && N_type_symbol && search_expression_type->is_same_type(N_type_symbol, last_type_symbol) ? search_expression_type->common_type(N_type_symbol, last_type_symbol) : N_type_symbol ;
+                    }
+                    
+                    if(N_type_symbol == NULL || search_expression_type->is_integer_type(N_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = IN_type_symbol;
@@ -25851,21 +27321,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_binary_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_binary_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_binary_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_binary_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25897,21 +27370,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_binary_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_binary_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_binary_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_binary_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25943,21 +27419,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_binary_type(IN1_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_binary_type(IN1_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_binary_type(IN2_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_binary_type(IN2_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = last_type_symbol;
@@ -25989,7 +27468,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_binary_type(IN_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_binary_type(IN_type_symbol))
             {
         
                 symbol_c * return_type_symbol = IN_type_symbol;
@@ -26015,19 +27494,22 @@
             symbol_c *G_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
+            if(G_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::bool_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN0");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN0_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN0_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN0_param_value == NULL)
                       IN0_param_value = function_call_param_iterator.next();
-                    symbol_c *IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    if (IN0_param_value != NULL) {
+                      IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
+                      last_type_symbol = last_type_symbol && IN0_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    }
                     
                     
                     {
@@ -26036,12 +27518,15 @@
                             identifier_c param_name("IN1");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *IN1_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (IN1_param_value == NULL)
                               IN1_param_value = function_call_param_iterator.next();
-                            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            if (IN1_param_value != NULL) {
+                              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+                              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            }
                             
                             
                             {
@@ -26088,12 +27573,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26134,12 +27622,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26180,12 +27671,15 @@
                     identifier_c param_name("IN");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN_param_value == NULL)
                       IN_param_value = function_call_param_iterator.next();
-                    symbol_c *IN_type_symbol = search_expression_type->get_type(IN_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+                    if (IN_param_value != NULL) {
+                      IN_type_symbol = search_expression_type->get_type(IN_param_value);
+                      last_type_symbol = last_type_symbol && IN_type_symbol && search_expression_type->is_same_type(IN_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN_type_symbol, last_type_symbol) : IN_type_symbol ;
+                    }
                     
                     
                     {
@@ -26194,12 +27688,15 @@
                             identifier_c param_name("MX");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *MX_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *MX_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (MX_param_value == NULL)
                               MX_param_value = function_call_param_iterator.next();
-                            symbol_c *MX_type_symbol = search_expression_type->get_type(MX_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(MX_type_symbol, last_type_symbol) ? search_expression_type->common_type(MX_type_symbol, last_type_symbol) : MX_type_symbol ;
+                            if (MX_param_value != NULL) {
+                              MX_type_symbol = search_expression_type->get_type(MX_param_value);
+                              last_type_symbol = last_type_symbol && MX_type_symbol && search_expression_type->is_same_type(MX_type_symbol, last_type_symbol) ? search_expression_type->common_type(MX_type_symbol, last_type_symbol) : MX_type_symbol ;
+                            }
                             
                             
                             {
@@ -26239,19 +27736,22 @@
             symbol_c *K_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_integer_type(K_type_symbol))
+            if(K_type_symbol == NULL || search_expression_type->is_integer_type(K_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN0");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN0_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN0_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN0_param_value == NULL)
                       IN0_param_value = function_call_param_iterator.next();
-                    symbol_c *IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    if (IN0_param_value != NULL) {
+                      IN0_type_symbol = search_expression_type->get_type(IN0_param_value);
+                      last_type_symbol = last_type_symbol && IN0_type_symbol && search_expression_type->is_same_type(IN0_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN0_type_symbol, last_type_symbol) : IN0_type_symbol ;
+                    }
                     
                     
                     {
@@ -26260,12 +27760,15 @@
                             identifier_c param_name("IN1");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *IN1_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *IN1_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (IN1_param_value == NULL)
                               IN1_param_value = function_call_param_iterator.next();
-                            symbol_c *IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            if (IN1_param_value != NULL) {
+                              IN1_type_symbol = search_expression_type->get_type(IN1_param_value);
+                              last_type_symbol = last_type_symbol && IN1_type_symbol && search_expression_type->is_same_type(IN1_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN1_type_symbol, last_type_symbol) : IN1_type_symbol ;
+                            }
                             
                             
                             {
@@ -26312,12 +27815,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26358,12 +27864,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26404,12 +27913,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26450,12 +27962,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26496,12 +28011,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26542,12 +28060,15 @@
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
                     
                     
                     {
@@ -26581,7 +28102,7 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;
@@ -26607,21 +28128,24 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -26653,21 +28177,24 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -26699,35 +28226,41 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("P");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *P_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (P_param_value == NULL)
                               P_param_value = function_call_param_iterator.next();
-                            symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            if (P_param_value != NULL) {
+                              P_type_symbol = search_expression_type->get_type(P_param_value);
+                              last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(P_type_symbol))
+                            if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                             {
                         
                                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -26765,21 +28298,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::date_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::tod_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::dt_type_name;
@@ -26793,21 +28329,24 @@
                 
             }
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -26839,35 +28378,41 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("P");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *P_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (P_param_value == NULL)
                               P_param_value = function_call_param_iterator.next();
-                            symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            if (P_param_value != NULL) {
+                              P_type_symbol = search_expression_type->get_type(P_param_value);
+                              last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(P_type_symbol))
+                            if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                             {
                         
                                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -26905,35 +28450,41 @@
             symbol_c *IN_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("L");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *L_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (L_param_value == NULL)
                       L_param_value = function_call_param_iterator.next();
-                    symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
-                    
-                    if(search_expression_type->is_integer_type(L_type_symbol))
+                    if (L_param_value != NULL) {
+                      L_type_symbol = search_expression_type->get_type(L_param_value);
+                      last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                    }
+                    
+                    if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("P");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *P_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (P_param_value == NULL)
                               P_param_value = function_call_param_iterator.next();
-                            symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            if (P_param_value != NULL) {
+                              P_type_symbol = search_expression_type->get_type(P_param_value);
+                              last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(P_type_symbol))
+                            if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                             {
                         
                                 symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -26971,49 +28522,58 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         {
                             identifier_c param_name("L");
                             /* Get the value from a foo(<param_name> = <param_value>) style call */
                             symbol_c *L_param_value = function_call_param_iterator.search(&param_name);
+                            symbol_c *L_type_symbol = NULL;
                             
                             /* Get the value from a foo(<param_value>) style call */
                             if (L_param_value == NULL)
                               L_param_value = function_call_param_iterator.next();
-                            symbol_c *L_type_symbol = search_expression_type->get_type(L_param_value);
-                            last_type_symbol = last_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                            if (L_param_value != NULL) {
+                              L_type_symbol = search_expression_type->get_type(L_param_value);
+                              last_type_symbol = last_type_symbol && L_type_symbol && search_expression_type->is_same_type(L_type_symbol, last_type_symbol) ? search_expression_type->common_type(L_type_symbol, last_type_symbol) : L_type_symbol ;
+                            }
                             
-                            if(search_expression_type->is_integer_type(L_type_symbol))
+                            if(L_type_symbol == NULL || search_expression_type->is_integer_type(L_type_symbol))
                             {
                         
                                 {
                                     identifier_c param_name("P");
                                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                                     symbol_c *P_param_value = function_call_param_iterator.search(&param_name);
+                                    symbol_c *P_type_symbol = NULL;
                                     
                                     /* Get the value from a foo(<param_value>) style call */
                                     if (P_param_value == NULL)
                                       P_param_value = function_call_param_iterator.next();
-                                    symbol_c *P_type_symbol = search_expression_type->get_type(P_param_value);
-                                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                                    if (P_param_value != NULL) {
+                                      P_type_symbol = search_expression_type->get_type(P_param_value);
+                                      last_type_symbol = last_type_symbol && P_type_symbol && search_expression_type->is_same_type(P_type_symbol, last_type_symbol) ? search_expression_type->common_type(P_type_symbol, last_type_symbol) : P_type_symbol ;
+                                    }
                                     
-                                    if(search_expression_type->is_integer_type(P_type_symbol))
+                                    if(P_type_symbol == NULL || search_expression_type->is_integer_type(P_type_symbol))
                                     {
                                 
                                         symbol_c * return_type_symbol = &search_constant_type_c::string_type_name;
@@ -27057,21 +28617,24 @@
             symbol_c *IN1_type_symbol = param_data_type;
             last_type_symbol = param_data_type;
             
-            if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+            if(IN1_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
             {
         
                 {
                     identifier_c param_name("IN2");
                     /* Get the value from a foo(<param_name> = <param_value>) style call */
                     symbol_c *IN2_param_value = function_call_param_iterator.search(&param_name);
+                    symbol_c *IN2_type_symbol = NULL;
                     
                     /* Get the value from a foo(<param_value>) style call */
                     if (IN2_param_value == NULL)
                       IN2_param_value = function_call_param_iterator.next();
-                    symbol_c *IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
-                    last_type_symbol = last_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
-                    
-                    if(search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
+                    if (IN2_param_value != NULL) {
+                      IN2_type_symbol = search_expression_type->get_type(IN2_param_value);
+                      last_type_symbol = last_type_symbol && IN2_type_symbol && search_expression_type->is_same_type(IN2_type_symbol, last_type_symbol) ? search_expression_type->common_type(IN2_type_symbol, last_type_symbol) : IN2_type_symbol ;
+                    }
+                    
+                    if(IN2_type_symbol == NULL || search_expression_type->is_same_type(&search_constant_type_c::string_type_name, last_type_symbol))
                     {
                 
                         symbol_c * return_type_symbol = &search_constant_type_c::int_type_name;