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- if (NULL == array_spec) ERROR; + /* NOTE: We comment out the consistency check so the compiler does not bork when it encounters buggy source code. + * e.g. Code that handles a non array variable as an array! + * VAR v1, v2: int; END_VAR + * v1 := v2[33, 45]; + * The above error will be caught by the datatype checking algorithms! + */ + array_spec_init_c * array_spec_init = dynamic_cast(symbol); + if (NULL != array_spec_init) symbol = array_spec_init->array_specification; + array_specification_c* array_spec = dynamic_cast(symbol); + // if (NULL == array_spec) ERROR; /* OK. Now initialize this object... */ - this->array_specification = symbol; + this->array_specification = array_spec; // Set to array_spec and not symbol => will be NULL if not an array_specification_c* !! reset(); } @@ -101,9 +108,9 @@ * Returns the subrange symbol! */ subrange_c *array_dimension_iterator_c::next(void) { + if (NULL == array_specification) return NULL; /* The source code probably has a bug which will be caught somewhere else! */ void *res = array_specification->accept(*this); - if (res == NULL) - return NULL; + if (NULL == res) return NULL; return current_array_dimension; } diff -r c95f42f28b69 -r 1f8885ae539a absyntax_utils/decompose_var_instance_name.cc --- a/absyntax_utils/decompose_var_instance_name.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/absyntax_utils/decompose_var_instance_name.cc Fri Aug 23 15:13:11 2013 +0100 @@ -52,24 +52,31 @@ next_variable_name = NULL; current_recursive_variable_name = NULL; previously_returned_variable_name = NULL; + current_array_subscript_list = NULL; } -symbol_c *decompose_var_instance_name_c::next_part(bool increment) { +/* Get the next element in the strcutured variable */ +symbol_c *decompose_var_instance_name_c::get_next() { /* We must always start from the top! * See note in the structured_variable_c visitor * to understand why... */ + current_array_subscript_list = NULL; symbol_c *res = (symbol_c *)variable_name->accept(*this); - if (increment) - next_variable_name = current_recursive_variable_name; + next_variable_name = current_recursive_variable_name; if (previously_returned_variable_name == res) - return NULL; - if (increment) - previously_returned_variable_name = res; + return NULL; + + previously_returned_variable_name = res; return res; } +/* If the current element in the structured variable is an array, return its subscript_list, + * otherwise return NULL + */ +list_c *decompose_var_instance_name_c::get_current_arraysubs_list(void) {return current_array_subscript_list;} + /*************************/ /* B.1 - Common elements */ /*************************/ @@ -95,8 +102,14 @@ /* subscripted_variable '[' subscript_list ']' */ // SYM_REF2(array_variable_c, subscripted_variable, subscript_list) void *decompose_var_instance_name_c::visit(array_variable_c *symbol) { - /* NOTE: the subscripted_variable may itself be a structure!, - * so we must recursevily visit! + if (NULL == symbol->subscript_list) ERROR; // array may not have an empty subscript list! + current_array_subscript_list = dynamic_cast(symbol->subscript_list); + if (NULL == current_array_subscript_list) ERROR; // if it does not point to a subscript_list_c, then the abstract syntax tree has been changed, and this code needs to be fixed accordingly! + + /* NOTE: the subscripted_variable may itself be a structure or an array!, so we must recursevily visit! */ + /* the next line will call either: + * - visit(structured_variable_c *) or visit(array_variable_c *), if the array variable is itself an element of another array os structure + * - visit(symbolic_variable_c *) if it is a simple array variable */ return symbol->subscripted_variable->accept(*this); } @@ -131,8 +144,13 @@ return (void *)symbol->field_selector->accept(*this); } + current_array_subscript_list = NULL; current_recursive_variable_name = symbol; - return symbol->record_variable->accept(*this); + /* the next line will call either: + * - visit(structured_variable_c *) or visit(array_variable_c *), if the record variable has more elements to visit + * - visit(symbolic_variable_c *) if it is the last element in the record variable + */ + return symbol->record_variable->accept(*this); } /********************************/ diff -r c95f42f28b69 -r 1f8885ae539a absyntax_utils/decompose_var_instance_name.hh --- a/absyntax_utils/decompose_var_instance_name.hh Fri Jul 19 13:31:35 2013 +0100 +++ b/absyntax_utils/decompose_var_instance_name.hh Fri Aug 23 15:13:11 2013 +0100 @@ -74,11 +74,14 @@ symbol_c *next_variable_name; symbol_c *current_recursive_variable_name; symbol_c *previously_returned_variable_name; + list_c *current_array_subscript_list; public: decompose_var_instance_name_c(symbol_c *variable_instance_name); - - symbol_c *next_part(bool increment = true); + /* Get the next element in the strcutured variable */ + symbol_c *get_next(void); + /* If the current element in the structured variable is an array, return its subscript_list, otherwise return NULL */ + list_c *get_current_arraysubs_list(void); private: /*************************/ diff -r c95f42f28b69 -r 1f8885ae539a absyntax_utils/function_call_param_iterator.cc --- a/absyntax_utils/function_call_param_iterator.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/absyntax_utils/function_call_param_iterator.cc Fri Aug 23 15:13:11 2013 +0100 @@ -464,12 +464,13 @@ void *function_call_param_iterator_c::visit(il_param_assignment_c *symbol) { TRACE("il_param_assignment_c"); - // TODO : We do not yet handle a instruction list passed as parameter !!! - // since we do not yet support it, it is best to simply stop than to fail silently... - if (NULL != symbol->simple_instr_list) ERROR; + symbol_c *expression = NULL; + if (!((NULL != symbol->simple_instr_list) ^ (NULL != symbol->il_operand))) ERROR; + if (NULL != symbol->simple_instr_list) expression = symbol->simple_instr_list; + if (NULL != symbol->il_operand ) expression = symbol->il_operand; current_assign_direction = assign_in; - return handle_parameter_assignment((symbol_c *)symbol->il_assign_operator->accept(*this), symbol->il_operand); + return handle_parameter_assignment((symbol_c *)symbol->il_assign_operator->accept(*this), expression); } /* il_assign_out_operator variable */ diff -r c95f42f28b69 -r 1f8885ae539a absyntax_utils/get_datatype_info.cc --- a/absyntax_utils/get_datatype_info.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/absyntax_utils/get_datatype_info.cc Fri Aug 23 15:13:11 2013 +0100 @@ -260,6 +260,7 @@ bool get_datatype_info_c::is_sfc_initstep(symbol_c *type_symbol) { symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol); + if (NULL == type_decl) {return false;} if (typeid(*type_decl) == typeid(initial_step_c)) {return true;} /* INITIAL_STEP step_name ':' action_association_list END_STEP */ /* A pseudo data type! */ return false; } @@ -270,6 +271,7 @@ bool get_datatype_info_c::is_sfc_step(symbol_c *type_symbol) { symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol); + if (NULL == type_decl) {return false;} if (typeid(*type_decl) == typeid(initial_step_c)) {return true;} /* INITIAL_STEP step_name ':' action_association_list END_STEP */ /* A pseudo data type! */ if (typeid(*type_decl) == typeid( step_c)) {return true;} /* STEP step_name ':' action_association_list END_STEP */ /* A pseudo data type! */ return false; @@ -280,6 +282,7 @@ bool get_datatype_info_c::is_function_block(symbol_c *type_symbol) { symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol); + if (NULL == type_decl) {return false;} if (typeid(*type_decl) == typeid(function_block_declaration_c)) {return true;} /* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */ return false; } @@ -290,6 +293,7 @@ bool get_datatype_info_c::is_subrange(symbol_c *type_symbol) { symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol); /* NOTE: will work correctly once we update the way search_base_type_c works, by adding a new search_effective_type:c */ + if (NULL == type_decl) {return false;} if (typeid(*type_decl) == typeid(subrange_type_declaration_c)) {return true;} /* subrange_type_name ':' subrange_spec_init */ if (typeid(*type_decl) == typeid(subrange_spec_init_c)) {return true;} /* subrange_specification ASSIGN signed_integer */ @@ -305,6 +309,7 @@ bool get_datatype_info_c::is_enumerated(symbol_c *type_symbol) { symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol); + if (NULL == type_decl) {return false;} if (typeid(*type_decl) == typeid(enumerated_type_declaration_c)) {return true;} /* enumerated_type_name ':' enumerated_spec_init */ if (typeid(*type_decl) == typeid(enumerated_spec_init_c)) {return true;} /* enumerated_specification ASSIGN enumerated_value */ @@ -320,6 +325,7 @@ bool get_datatype_info_c::is_array(symbol_c *type_symbol) { symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol); + if (NULL == type_decl) {return false;} if (typeid(*type_decl) == typeid(array_type_declaration_c)) {return true;} /* identifier ':' array_spec_init */ if (typeid(*type_decl) == typeid(array_spec_init_c)) {return true;} /* array_specification [ASSIGN array_initialization} */ @@ -337,6 +343,7 @@ bool get_datatype_info_c::is_structure(symbol_c *type_symbol) { symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol); + if (NULL == type_decl) {return false;} if (typeid(*type_decl) == typeid(structure_type_declaration_c)) {return true;} /* structure_type_name ':' structure_specification */ if (typeid(*type_decl) == typeid(initialized_structure_c)) {return true;} /* structure_type_name ASSIGN structure_initialization */ diff -r c95f42f28b69 -r 1f8885ae539a absyntax_utils/search_varfb_instance_type.cc --- a/absyntax_utils/search_varfb_instance_type.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/absyntax_utils/search_varfb_instance_type.cc Fri Aug 23 15:13:11 2013 +0100 @@ -209,7 +209,8 @@ * structure_type_declaration_c, but for now, let's leave it in... */ void *search_varfb_instance_type_c::visit(structure_type_declaration_c *symbol) { - if (NULL == current_field_selector) ERROR; + if (NULL == current_field_selector) return NULL; // the source code has a datatype consistency bug that will be caught later!! + symbol->structure_specification->accept(*this); return NULL; /* NOTE: structure_specification will point to either a @@ -228,7 +229,7 @@ * initialized_structure_c, but for now, let's leave it in... */ void *search_varfb_instance_type_c::visit(initialized_structure_c *symbol) { - if (NULL != current_field_selector) ERROR; + if (NULL == current_field_selector) return NULL; // the source code has a datatype consistency bug that will be caught later!! /* recursively find out the data type of current_field_selector... */ symbol->structure_type_name->accept(*this); @@ -239,7 +240,7 @@ /* structure_declaration: STRUCT structure_element_declaration_list END_STRUCT */ /* structure_element_declaration_list structure_element_declaration ';' */ void *search_varfb_instance_type_c::visit(structure_element_declaration_list_c *symbol) { - if (NULL == current_field_selector) ERROR; + if (NULL == current_field_selector) return NULL; // the source code has a datatype consistency bug that will be caught later!! /* now search the structure declaration */ for(int i = 0; i < symbol->n; i++) { @@ -251,7 +252,7 @@ /* structure_element_name ':' spec_init */ void *search_varfb_instance_type_c::visit(structure_element_declaration_c *symbol) { - if (NULL == current_field_selector) ERROR; + if (NULL == current_field_selector) return NULL; // the source code has a datatype consistency bug that will be caught later!! if (compare_identifiers(symbol->structure_element_name, current_field_selector) == 0) { /* found the type of the element we were looking for! */ @@ -357,7 +358,7 @@ /* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */ // SYM_REF4(function_block_declaration_c, fblock_name, var_declarations, fblock_body, unused) void *search_varfb_instance_type_c::visit(function_block_declaration_c *symbol) { - if (NULL == current_field_selector) ERROR; + if (NULL == current_field_selector) return NULL; // the source code has a datatype consistency bug that will be caught later!! /* now search the function block declaration for the variable... */ /* If not found, these pointers will all be set to NULL!! */ @@ -378,7 +379,7 @@ // SYM_REF2(initial_step_c, step_name, action_association_list) /* NOTE: this method may be called from visit(structured_variable_c *symbol) method| */ void *search_varfb_instance_type_c::visit(initial_step_c *symbol) { - if (NULL == current_field_selector) ERROR; + if (NULL == current_field_selector) return NULL; // the source code has a datatype consistency bug that will be caught later!! identifier_c T("T"); identifier_c X("X"); diff -r c95f42f28b69 -r 1f8885ae539a aclocal.m4 --- a/aclocal.m4 Fri Jul 19 13:31:35 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,971 +0,0 @@ -# generated automatically by aclocal 1.11.3 -*- Autoconf -*- - -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, -# 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, -# Inc. -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; without -# even the implied warranty of MERCHANTABILITY or FITNESS FOR A -# PARTICULAR PURPOSE. - -m4_ifndef([AC_AUTOCONF_VERSION], - [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl -m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.68],, -[m4_warning([this file was generated for autoconf 2.68. -You have another version of autoconf. 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SECONDS_PER_DAY : 0), + IN.tv_nsec}; +} +static inline DATE __date_and_time_to_date(DT IN){ + return (DATE){ + IN.tv_sec - IN.tv_sec % SECONDS_PER_DAY - (IN.tv_sec < 0 ? SECONDS_PER_DAY : 0), + 0}; +} /*****************/ /* FROM/TO BCD */ /*****************/ -#define __bcd_digit(fac) + +static inline BOOL __test_bcd(LWORD IN) { + while (IN) { + if ((IN & 0xf) > 9) return 1; + IN >>= 4; + } + return 0; +} + static inline ULINT __bcd_to_uint(LWORD IN){ - ULINT res; - ULINT i; - - res = IN & 0xf; - for(i = 10ULL; i <= 1000000000000000ULL; i *= 10){ - if(!(IN >>= 4)) - break; - res += (IN & 0xf) * i; + ULINT res = IN & 0xf; + ULINT factor = 10ULL; + + while (IN >>= 4) { + res += (IN & 0xf) * factor; + factor *= 10; } return res; } static inline LWORD __uint_to_bcd(ULINT IN){ - LWORD res; - USINT i; - - res = IN % 10; - for(i = 4; i<=60; i += 4){ - if(!(IN /= 10)) - break; - res |= (IN % 10) << i; + LWORD res = IN % 10; + USINT shift = 4; + + while (IN /= 10) { + res |= (IN % 10) << shift; + shift += 4; } return res; } @@ -977,7 +967,7 @@ /******** BCD_TO_ ************/ #define __iec_(to_TYPENAME,from_TYPENAME) \ static inline to_TYPENAME from_TYPENAME##_BCD_TO_##to_TYPENAME(EN_ENO_PARAMS, from_TYPENAME op){\ - TEST_EN(to_TYPENAME)\ + TEST_EN_COND(to_TYPENAME, __test_bcd(op))\ return (to_TYPENAME)__bcd_to_uint(op);\ }\ static inline to_TYPENAME BCD_TO_##to_TYPENAME##__##to_TYPENAME##__##from_TYPENAME(EN_ENO_PARAMS, from_TYPENAME op){\ diff -r c95f42f28b69 -r 1f8885ae539a lib/iec_types.h --- a/lib/iec_types.h Fri Jul 19 13:31:35 2013 +0100 +++ b/lib/iec_types.h Fri Aug 23 15:13:11 2013 +0100 @@ -47,6 +47,28 @@ #define STR_LEN_TYPE int8_t #endif +#define __INIT_REAL 0 +#define __INIT_LREAL 0 +#define __INIT_SINT 0 +#define __INIT_INT 0 +#define __INIT_DINT 0 +#define __INIT_LINT 0 +#define __INIT_USINT 0 +#define __INIT_UINT 0 +#define __INIT_UDINT 0 +#define __INIT_ULINT 0 +#define __INIT_TIME (TIME){0,0} +#define __INIT_BOOL 0 +#define __INIT_BYTE 0 +#define __INIT_WORD 0 +#define __INIT_DWORD 0 +#define __INIT_LWORD 0 +#define __INIT_STRING (STRING){0,""} +//#define __INIT_WSTRING +#define __INIT_DATE (DATE){0,0} +#define __INIT_TOD (TOD){0,0} +#define __INIT_DT (DT){0,0} + typedef STR_LEN_TYPE __strlen_t; typedef struct { __strlen_t len; diff -r c95f42f28b69 -r 1f8885ae539a stage1_2/Makefile.am --- a/stage1_2/Makefile.am Fri Jul 19 13:31:35 2013 +0100 +++ b/stage1_2/Makefile.am Fri Aug 23 15:13:11 2013 +0100 @@ -19,5 +19,5 @@ create_enumtype_conversion_functions.cc \ stage1_2.cc -libstage1_2_a_CPPFLAGS = -DDEFAULT_LIBDIR='"lib"' -I../../absyntax +libstage1_2_a_CPPFLAGS = -DDEFAULT_LIBDIR='"lib"' -I../../absyntax -DYY_BUF_SIZE=65536 diff -r c95f42f28b69 -r 1f8885ae539a stage1_2/Makefile.in --- a/stage1_2/Makefile.in Fri Jul 19 13:31:35 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,596 +0,0 @@ -# Makefile.in generated by automake 1.11.3 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software -# Foundation, Inc. -# This Makefile.in is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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- /* Although a call to a non-declared FB is a semantic error, this is currently caught by stage 2! */ - if (NULL == fb_type_id) ERROR; - - function_block_declaration_c *fb_decl = function_block_type_symtable.find_value(fb_type_id); - if (function_block_type_symtable.end_value() == fb_decl) - /* The il_operand is not the name of a FB instance. Most probably it is the name of a variable of some other type. - * this is a semantic error. - */ - fb_decl = NULL; - + symbol_c *fb_decl = (NULL == il_operand)? NULL : search_varfb_instance_type->get_basetype_decl(il_operand); + if (! get_datatype_info_c::is_function_block(fb_decl)) fb_decl = NULL; + + /* Although a call to a non-declared FB is a semantic error, this is currently caught by stage 2! */ + /* However, when calling using the 'S' and 'R' operators, this error is not caught by stage 2, as these operators have two possible semantics */ + // if (NULL == fb_type_id) ERROR; + /* The narrow_candidate_datatypes_c does not rely on this called_fb_declaration pointer being == NULL to conclude that * we have a datatype incompatibility error, so we set it to fb_decl to allow the print_datatype_error_c to print out * more informative error messages! @@ -594,10 +590,55 @@ + +/* handle the S and R IL operators... */ +/* operator_str should be set to either "S" or "R" */ +void *fill_candidate_datatypes_c::handle_S_and_R_operator(symbol_c *symbol, const char *operator_str, symbol_c *&called_fb_declaration) { + /* NOTE: this operator has two possible semantic meanings: + * - Set/Reset the BOOL operand variable to true + * - call the FB specified by the operand. + * Which of the two semantics will have to be determined by the datatype of the operand! + */ + symbol_c *prev_instruction_type, *operand_type; + + if (NULL == prev_il_instruction) return NULL; + if (NULL == il_operand) return NULL; + + /* Try the Set/Reset semantics */ + for (unsigned int i = 0; i < prev_il_instruction->candidate_datatypes.size(); i++) { + for(unsigned int j = 0; j < il_operand->candidate_datatypes.size(); j++) { + prev_instruction_type = prev_il_instruction->candidate_datatypes[i]; + operand_type = il_operand->candidate_datatypes[j]; + /* IEC61131-3, Table 52, Note (e) states that the datatype of the operand must be BOOL! + * IEC61131-3, Table 52, line 3 states that this operator should "Set operand to 1 if current result is Boolean 1" + * which implies that the prev_instruction_type MUST also be BOOL compatible. + */ + if (get_datatype_info_c::is_BOOL_compatible(prev_instruction_type) && get_datatype_info_c::is_BOOL_compatible(operand_type)) + add_datatype_to_candidate_list(symbol, prev_instruction_type); + } + } + + /* if the appropriate semantics is not a Set/Reset of a boolean variable, the we try for the FB invocation! */ + if (symbol->candidate_datatypes.size() == 0) { + handle_implicit_il_fb_call(symbol, operator_str, called_fb_declaration); + /* If it is also not a valid FB call, make sure the candidate_datatypes is empty (handle_implicit_il_fb_call may leave it non-empty!!) */ + /* From here on out, all later code will consider the symbol->called_fb_declaration being NULL as an indication that this operator must use the + * Set/Reset semantics, so we must also guarantee that the remainder of the state of this symbol is compatible with that assumption! + */ + if (NULL == called_fb_declaration) + symbol->candidate_datatypes.clear(); + } + + if (debug) std::cout << operator_str << " [" << prev_il_instruction->candidate_datatypes.size() << "," << il_operand->candidate_datatypes.size() << "] ==> " << symbol->candidate_datatypes.size() << " result.\n"; + return NULL; +} + + + /* handle a binary IL operator, like ADD, SUB, etc... */ void *fill_candidate_datatypes_c::handle_binary_operator(const struct widen_entry widen_table[], symbol_c *symbol, symbol_c *l_expr, symbol_c *r_expr) { - if (NULL == l_expr) /* if no prev_il_instruction */ - return NULL; + if (NULL == l_expr) return NULL; /* if no prev_il_instruction */ + if (NULL == r_expr) return NULL; /* if no IL operand!! */ for(unsigned int i = 0; i < l_expr->candidate_datatypes.size(); i++) for(unsigned int j = 0; j < r_expr->candidate_datatypes.size(); j++) @@ -1112,12 +1153,29 @@ /* if we were to want the data type of the array itself, then we should call_param_name * search_varfb_instance_type->get_basetype_decl(symbol->subscripted_variable) */ - symbol_c *result = search_varfb_instance_type->get_basetype_decl(symbol); - if (NULL != result) add_datatype_to_candidate_list(symbol, result); + add_datatype_to_candidate_list(symbol, search_varfb_instance_type->get_basetype_decl(symbol)); /* will only add if non NULL */ /* recursively call the subscript list, so we can check the data types of the expressions used for the subscripts */ symbol->subscript_list->accept(*this); + /* recursively call the subscripted_variable. We need to do this since the array variable may be stored inside a structured + * variable (i.e. if it is an element inside a struct), in which case we want to recursively visit every element of the struct, + * as it may contain more arrays whose subscripts must also be visited! + * e.g. structvar.a1[v1+2].b1.c1[v2+3].d1 + * TYPE + * d_s: STRUCT d1: int; d2: int; + * d_a: ARRAY [1..3] OF d_s; + * c_s: STRUCT c1: d_a; c2: d_a; + * b_s: STRUCT b1: c_s; b2: c_s; + * b_a: ARRAY [1..3] OF b_s; + * a_s: STRUCT a1: b_a; a2: b_a; + * END_TYPE + * VAR + * structvar: a_s; + * END_VAR + */ + symbol->subscripted_variable->accept(*this); + if (debug) std::cout << "ARRAY_VAR [" << symbol->candidate_datatypes.size() << "]\n"; return NULL; } @@ -1136,11 +1194,18 @@ * this into account! */ // SYM_REF2(structured_variable_c, record_variable, field_selector) -/* NOTE: We do not need to recursively determine the data types of each field_selector, as the search_varfb_instance_type - * will do that for us. So we determine the candidate datatypes only for the full structured_variable. - */ void *fill_candidate_datatypes_c::visit(structured_variable_c *symbol) { + /* NOTE: We do not need to recursively determine the data types of each field_selector, as the search_varfb_instance_type + * will do that for us. So we determine the candidate datatypes only for the full structured_variable. + */ add_datatype_to_candidate_list(symbol, search_varfb_instance_type->get_basetype_decl(symbol)); /* will only add if non NULL */ + /* However, we do need to visit each record type recursively! + * Remember that a structured variable may be stored inside an array (e.g. arrayvar[33].elem1) + * The array subscripts may contain a complex expression (e.g. arrayvar[ varx + 33].elem1) whose datatype must be correctly determined! + * The expression, may even contain a function call to an overloaded function! + * (e.g. arrayvar[ varx + TRUNC(realvar)].elem1) + */ + symbol->record_variable->accept(*this); return NULL; } @@ -1323,7 +1388,31 @@ return NULL; } - +/********************************************/ +/* B 1.6 Sequential function chart elements */ +/********************************************/ + +void *fill_candidate_datatypes_c::visit(transition_condition_c *symbol) { + symbol_c *condition_type; + + if (symbol->transition_condition_il != NULL) { + symbol->transition_condition_il->accept(*this); + for (unsigned int i = 0; i < symbol->transition_condition_il->candidate_datatypes.size(); i++) { + condition_type = symbol->transition_condition_il->candidate_datatypes[i]; + if (get_datatype_info_c::is_BOOL_compatible(condition_type)) + add_datatype_to_candidate_list(symbol, condition_type); + } + } + if (symbol->transition_condition_st != NULL) { + symbol->transition_condition_st->accept(*this); + for (unsigned int i = 0; i < symbol->transition_condition_st->candidate_datatypes.size(); i++) { + condition_type = symbol->transition_condition_st->candidate_datatypes[i]; + if (get_datatype_info_c::is_BOOL_compatible(condition_type)) + add_datatype_to_candidate_list(symbol, condition_type); + } + } + return NULL; +} /********************************/ /* B 1.7 Configuration elements */ @@ -1505,21 +1594,11 @@ * | il_call_operator prev_declared_fb_name '(' il_operand_list ')' * | il_call_operator prev_declared_fb_name '(' eol_list il_param_list ')' */ -/* NOTE: The parameter 'called_fb_declaration'is used to pass data between stage 3 and stage4 (although currently it is not used in stage 4 */ +/* NOTE: The parameter 'called_fb_declaration'is used to pass data between stage 3 and stage4 */ // SYM_REF4(il_fb_call_c, il_call_operator, fb_name, il_operand_list, il_param_list, symbol_c *called_fb_declaration) void *fill_candidate_datatypes_c::visit(il_fb_call_c *symbol) { - /* We do not call - * fb_decl = search_varfb_instance_type->get_basetype_decl(symbol->fb_name); - * because we want to make sure it is a FB instance, and not some other data type... - */ - symbol_c *fb_type_id = search_varfb_instance_type->get_basetype_id(symbol->fb_name); - /* Although a call to a non-declared FB is a semantic error, this is currently caught by stage 2! */ - if (NULL == fb_type_id) ERROR; - - function_block_declaration_c *fb_decl = function_block_type_symtable.find_value(fb_type_id); - if (function_block_type_symtable.end_value() == fb_decl) - /* The fb_name not the name of a FB instance. Most probably it is the name of a variable of some other type. */ - fb_decl = NULL; + symbol_c *fb_decl = search_varfb_instance_type->get_basetype_decl(symbol->fb_name); + if (! get_datatype_info_c::is_function_block(fb_decl)) fb_decl = NULL; /* Although a call to a non-declared FB is a semantic error, this is currently caught by stage 2! */ if (NULL == fb_decl) ERROR; @@ -1616,6 +1695,7 @@ /* B 2.2 Operators */ /*******************/ void *fill_candidate_datatypes_c::visit(LD_operator_c *symbol) { + if (NULL == il_operand) return NULL; for(unsigned int i = 0; i < il_operand->candidate_datatypes.size(); i++) { add_datatype_to_candidate_list(symbol, il_operand->candidate_datatypes[i]); } @@ -1624,6 +1704,7 @@ } void *fill_candidate_datatypes_c::visit(LDN_operator_c *symbol) { + if (NULL == il_operand) return NULL; for(unsigned int i = 0; i < il_operand->candidate_datatypes.size(); i++) { if (get_datatype_info_c::is_ANY_BIT_compatible(il_operand->candidate_datatypes[i])) add_datatype_to_candidate_list(symbol, il_operand->candidate_datatypes[i]); @@ -1636,6 +1717,7 @@ symbol_c *prev_instruction_type, *operand_type; if (NULL == prev_il_instruction) return NULL; + if (NULL == il_operand) return NULL; for (unsigned int i = 0; i < prev_il_instruction->candidate_datatypes.size(); i++) { for(unsigned int j = 0; j < il_operand->candidate_datatypes.size(); j++) { prev_instruction_type = prev_il_instruction->candidate_datatypes[i]; @@ -1652,6 +1734,7 @@ symbol_c *prev_instruction_type, *operand_type; if (NULL == prev_il_instruction) return NULL; + if (NULL == il_operand) return NULL; for (unsigned int i = 0; i < prev_il_instruction->candidate_datatypes.size(); i++) { for(unsigned int j = 0; j < il_operand->candidate_datatypes.size(); j++) { prev_instruction_type = prev_il_instruction->candidate_datatypes[i]; @@ -1672,6 +1755,7 @@ * We do not need to generate an error message. This error will be caught somewhere else! */ if (NULL == prev_il_instruction) return NULL; + if (NULL == il_operand) return NULL; for (unsigned int i = 0; i < prev_il_instruction->candidate_datatypes.size(); i++) { if (get_datatype_info_c::is_ANY_BIT_compatible(prev_il_instruction->candidate_datatypes[i])) add_datatype_to_candidate_list(symbol, prev_il_instruction->candidate_datatypes[i]); @@ -1681,58 +1765,17 @@ } -void *fill_candidate_datatypes_c::visit(S_operator_c *symbol) { - /* TODO: what if this is a FB call ?? */ - symbol_c *prev_instruction_type, *operand_type; - - if (NULL == prev_il_instruction) return NULL; - for (unsigned int i = 0; i < prev_il_instruction->candidate_datatypes.size(); i++) { - for(unsigned int j = 0; j < il_operand->candidate_datatypes.size(); j++) { - prev_instruction_type = prev_il_instruction->candidate_datatypes[i]; - operand_type = il_operand->candidate_datatypes[j]; - /* TODO: I believe the following is wrong! The data types of prev_instruction_type and operand_type DO NOT have to be equal. - * the prev_instruction_type MUST be BOOL compatible. - * I am not too sure about operand_type, does it have to be BOOL compatible, or can it be ANY_BIT compatible? Must check! - */ - if (get_datatype_info_c::is_type_equal(prev_instruction_type,operand_type) && get_datatype_info_c::is_BOOL_compatible(operand_type)) - add_datatype_to_candidate_list(symbol, prev_instruction_type); - } - } - if (debug) std::cout << "S [" << prev_il_instruction->candidate_datatypes.size() << "," << il_operand->candidate_datatypes.size() << "] ==> " << symbol->candidate_datatypes.size() << " result.\n"; - return NULL; -} - - -void *fill_candidate_datatypes_c::visit(R_operator_c *symbol) { - /* TODO: what if this is a FB call ?? */ - symbol_c *prev_instruction_type, *operand_type; - - if (NULL == prev_il_instruction) return NULL; - for (unsigned int i = 0; i < prev_il_instruction->candidate_datatypes.size(); i++) { - for(unsigned int j = 0; j < il_operand->candidate_datatypes.size(); j++) { - prev_instruction_type = prev_il_instruction->candidate_datatypes[i]; - operand_type = il_operand->candidate_datatypes[j]; - /* TODO: I believe the following is wrong! The data types of prev_instruction_type and operand_type DO NOT have to be equal. - * the prev_instruction_type MUST be BOOL compatible. - * I am not too sure about operand_type, does it have to be BOOL compatible, or can it be ANY_BIT compatible? Must check! - */ - if (get_datatype_info_c::is_type_equal(prev_instruction_type,operand_type) && get_datatype_info_c::is_BOOL_compatible(operand_type)) - add_datatype_to_candidate_list(symbol, prev_instruction_type); - } - } - if (debug) std::cout << "R [" << prev_il_instruction->candidate_datatypes.size() << "," << il_operand->candidate_datatypes.size() << "] ==> " << symbol->candidate_datatypes.size() << " result.\n"; - return NULL; -} - - -void *fill_candidate_datatypes_c::visit( S1_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "S1", symbol->called_fb_declaration);} -void *fill_candidate_datatypes_c::visit( R1_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "R1", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( S_operator_c *symbol) {return handle_S_and_R_operator (symbol, "S", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( R_operator_c *symbol) {return handle_S_and_R_operator (symbol, "R", symbol->called_fb_declaration);} + +void *fill_candidate_datatypes_c::visit( S1_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "S1", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( R1_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "R1", symbol->called_fb_declaration);} void *fill_candidate_datatypes_c::visit( CLK_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "CLK", symbol->called_fb_declaration);} -void *fill_candidate_datatypes_c::visit( CU_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "CU", symbol->called_fb_declaration);} -void *fill_candidate_datatypes_c::visit( CD_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "CD", symbol->called_fb_declaration);} -void *fill_candidate_datatypes_c::visit( PV_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "PV", symbol->called_fb_declaration);} -void *fill_candidate_datatypes_c::visit( IN_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "IN", symbol->called_fb_declaration);} -void *fill_candidate_datatypes_c::visit( PT_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "PT", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( CU_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "CU", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( CD_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "CD", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( PV_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "PV", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( IN_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "IN", symbol->called_fb_declaration);} +void *fill_candidate_datatypes_c::visit( PT_operator_c *symbol) {return handle_implicit_il_fb_call(symbol, "PT", symbol->called_fb_declaration);} void *fill_candidate_datatypes_c::visit( AND_operator_c *symbol) {return handle_binary_operator(widen_AND_table, symbol, prev_il_instruction, il_operand);} void *fill_candidate_datatypes_c::visit( OR_operator_c *symbol) {return handle_binary_operator( widen_OR_table, symbol, prev_il_instruction, il_operand);} @@ -1921,17 +1964,9 @@ /* B 3.2.2 Subprogram Control Statements */ /*****************************************/ void *fill_candidate_datatypes_c::visit(fb_invocation_c *symbol) { - symbol_c *fb_type_id = search_varfb_instance_type->get_basetype_id(symbol->fb_name); - /* Although a call to a non-declared FB is a semantic error, this is currently caught by stage 2! */ - if (NULL == fb_type_id) ERROR; - - function_block_declaration_c *fb_decl = function_block_type_symtable.find_value(fb_type_id); - if (function_block_type_symtable.end_value() == fb_decl) - /* The fb_name not the name of a FB instance. Most probably it is the name of a variable of some other type. */ - fb_decl = NULL; - - /* Although a call to a non-declared FB is a semantic error, this is currently caught by stage 2! */ - if (NULL == fb_decl) ERROR; + symbol_c *fb_decl = search_varfb_instance_type->get_basetype_decl(symbol->fb_name); + if (! get_datatype_info_c::is_function_block(fb_decl )) fb_decl = NULL; + if (NULL == fb_decl) ERROR; /* Although a call to a non-declared FB is a semantic error, this is currently caught by stage 2! */ if (symbol-> formal_param_list != NULL) symbol->formal_param_list->accept(*this); if (symbol->nonformal_param_list != NULL) symbol->nonformal_param_list->accept(*this); diff -r c95f42f28b69 -r 1f8885ae539a stage3/fill_candidate_datatypes.hh --- a/stage3/fill_candidate_datatypes.hh Fri Jul 19 13:31:35 2013 +0100 +++ b/stage3/fill_candidate_datatypes.hh Fri Aug 23 15:13:11 2013 +0100 @@ -89,7 +89,8 @@ bool match_nonformal_call(symbol_c *f_call, symbol_c *f_decl); bool match_formal_call (symbol_c *f_call, symbol_c *f_decl, symbol_c **first_param_datatype = NULL); void handle_function_call(symbol_c *fcall, generic_function_call_t fcall_data); - void *handle_implicit_il_fb_call(symbol_c *il_instruction, const char *param_name, symbol_c *&called_fb_declaration); + void *handle_implicit_il_fb_call(symbol_c *il_instruction, const char *param_name, symbol_c *&called_fb_declaration); + void *handle_S_and_R_operator (symbol_c *symbol, const char *operator_str, symbol_c *&called_fb_declaration); void *handle_equality_comparison(const struct widen_entry widen_table[], symbol_c *symbol, symbol_c *l_expr, symbol_c *r_expr); void *handle_binary_expression (const struct widen_entry widen_table[], symbol_c *symbol, symbol_c *l_expr, symbol_c *r_expr); void *handle_binary_operator (const struct widen_entry widen_table[], symbol_c *symbol, symbol_c *l_expr, symbol_c *r_expr); @@ -238,6 +239,12 @@ /**********************/ void *visit(program_declaration_c *symbol); + /********************************************/ + /* B 1.6 Sequential function chart elements */ + /********************************************/ + + void *visit(transition_condition_c *symbol); + /********************************/ /* B 1.7 Configuration elements */ /********************************/ diff -r c95f42f28b69 -r 1f8885ae539a stage3/lvalue_check.cc --- a/stage3/lvalue_check.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/stage3/lvalue_check.cc Fri Aug 23 15:13:11 2013 +0100 @@ -114,7 +114,7 @@ * when an expression is found, we may replace this check with an assertion... * if (NULL == struct_elem) ERROR; */ - symbol_c *struct_elem = decompose_lvalue.next_part(); + symbol_c *struct_elem = decompose_lvalue.get_next(); if (NULL == struct_elem) return; symbol_c *type_decl = search_var_instance_decl->get_decl(struct_elem); @@ -135,7 +135,7 @@ function_block_declaration_c *fb_decl = function_block_type_symtable.find_value(basetype_id); if (function_block_type_symtable.end_value() == fb_decl) return; - while (NULL != (struct_elem = decompose_lvalue.next_part())) { + while (NULL != (struct_elem = decompose_lvalue.get_next())) { search_var_instance_decl_c fb_search_var_instance_decl(fb_decl); if (search_var_instance_decl_c::output_vt == fb_search_var_instance_decl.get_vartype(struct_elem)) { STAGE3_ERROR(0, struct_elem, struct_elem, "Assignment to FB output variable is not allowed."); @@ -156,16 +156,13 @@ void lvalue_check_c::check_assignment_to_constant(symbol_c *lvalue) { unsigned int option = search_var_instance_decl->get_option(lvalue); if (option == search_var_instance_decl_c::constant_opt) { - STAGE3_ERROR(0, lvalue, lvalue, "Assignment to CONSTANT variables is not be allowed."); + STAGE3_ERROR(0, lvalue, lvalue, "Assignment to CONSTANT variables is not allowed."); } } /* No assigning values to expressions. */ void lvalue_check_c::check_assignment_to_expression(symbol_c *lvalue) { - /* This may occur in function invocations, when passing values (possibly an expression) to one - * of the function's OUTPUT or IN_OUT parameters. - */ /* This may occur in function invocations, when passing values (possibly an expression) to one * of the function's OUTPUT or IN_OUT parameters. */ @@ -233,21 +230,39 @@ (typeid( *lvalue ) == typeid( neg_expression_c )) || (typeid( *lvalue ) == typeid( not_expression_c )) || (typeid( *lvalue ) == typeid( function_invocation_c ))) - STAGE3_ERROR(0, lvalue, lvalue, "Assigning an expression to an OUT or IN_OUT parameter is not allowed."); + STAGE3_ERROR(0, lvalue, lvalue, "Assignment to an expression or a literal value is not allowed."); } +/* No assigning values to IL lists. */ +void lvalue_check_c::check_assignment_to_il_list(symbol_c *lvalue) { + /* This may occur in formal invocations in IL, where an embedded IL list may be used instead of a symbolic_variable + * when passing an IN_OUT parameter! Note that it will never occur to OUT parameters, as the syntax does not allow it, + * although this does not affect out algorithm here! + */ + if ( + /****************************************/ + /* B.2 - Language IL (Instruction List) */ + /****************************************/ + /***********************************/ + /* B 2.1 Instructions and Operands */ + /***********************************/ + (typeid( *lvalue ) == typeid( simple_instr_list_c))) + STAGE3_ERROR(0, lvalue, lvalue, "Assigning an IL list to an IN_OUT parameter is not allowed."); +} void lvalue_check_c::verify_is_lvalue(symbol_c *lvalue) { + if (NULL == lvalue) return; // missing operand in source code being compiled. Error will be caught and reported by datatype checking! int init_error_count = error_count; /* stop the checks once an error has been found... */ if (error_count == init_error_count) check_assignment_to_expression(lvalue); + if (error_count == init_error_count) check_assignment_to_il_list (lvalue); if (error_count == init_error_count) check_assignment_to_controlvar(lvalue); - if (error_count == init_error_count) check_assignment_to_output(lvalue); - if (error_count == init_error_count) check_assignment_to_constant(lvalue); + if (error_count == init_error_count) check_assignment_to_output (lvalue); + if (error_count == init_error_count) check_assignment_to_constant (lvalue); } @@ -261,6 +276,12 @@ */ #include /* required for strcmp() */ void lvalue_check_c::check_nonformal_call(symbol_c *f_call, symbol_c *f_decl) { + /* if data type semantic verification was unable to determine which function is being called, + * then it does not make sense to go ahead and check for lvalues to unknown parameters. + * We simply bug out! + */ + if (NULL == f_decl) return; + symbol_c *call_param_value; identifier_c *param_name; function_param_iterator_c fp_iterator(f_decl); @@ -286,9 +307,9 @@ /* If the parameter is either OUT or IN_OUT, we check if 'call_param_value' is a valid lvalue */ if ((function_param_iterator_c::direction_out == param_direction) || (function_param_iterator_c::direction_inout == param_direction)) verify_is_lvalue(call_param_value); - /* parameter values to IN parameters may be expressions with function invocations that must also be checked! */ - if (function_param_iterator_c::direction_in == param_direction) - call_param_value->accept(*this); + /* parameter values to IN parameters may be expressions with function invocations that must also be checked! */ + /* parameter values to OUT or IN_OUT parameters may contain arrays, whose subscripts contain expressions that must be checked! */ + call_param_value->accept(*this); } } } @@ -326,10 +347,9 @@ /* If the parameter is either OUT or IN_OUT, we check if 'call_param_value' is a valid lvalue */ if ((function_param_iterator_c::direction_out == param_direction) || (function_param_iterator_c::direction_inout == param_direction)) verify_is_lvalue(call_param_value); - /* parameter values to IN parameters may be expressions with function invocations that must also be checked! */ - if (function_param_iterator_c::direction_in == param_direction) - call_param_value->accept(*this); - + /* parameter values to IN parameters may be expressions with function invocations that must also be checked! */ + /* parameter values to OUT or IN_OUT parameters may contain arrays, whose subscripts contain expressions that must be checked! */ + call_param_value->accept(*this); } } } diff -r c95f42f28b69 -r 1f8885ae539a stage3/lvalue_check.hh --- a/stage3/lvalue_check.hh Fri Jul 19 13:31:35 2013 +0100 +++ b/stage3/lvalue_check.hh Fri Aug 23 15:13:11 2013 +0100 @@ -60,6 +60,8 @@ void check_assignment_to_output (symbol_c *lvalue); void check_assignment_to_constant (symbol_c *lvalue); void check_assignment_to_expression(symbol_c *lvalue); + void check_assignment_to_il_list (symbol_c *lvalue); + void check_formal_call (symbol_c *f_call, symbol_c *f_decl); void check_nonformal_call(symbol_c *f_call, symbol_c *f_decl); diff -r c95f42f28b69 -r 1f8885ae539a stage3/narrow_candidate_datatypes.cc --- a/stage3/narrow_candidate_datatypes.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/stage3/narrow_candidate_datatypes.cc Fri Aug 23 15:13:11 2013 +0100 @@ -322,11 +322,9 @@ /* set the datatype of the il_operand, this is, the FB being called! */ if (NULL != il_operand) { - /* only set it if it is in the candidate datatypes list! */ - set_datatype(called_fb_declaration, il_operand); + set_datatype(called_fb_declaration, il_operand); /* only set it if it is in the candidate datatypes list! */ il_operand->accept(*this); } - symbol_c *fb_decl = il_operand->datatype; if (0 == fake_prev_il_instruction->prev_il_instruction.size()) { /* This IL implicit FB call (e.g. CLK ton_var) is not preceded by another IL instruction @@ -336,8 +334,10 @@ return NULL; } + symbol_c *fb_decl = (NULL == il_operand)? NULL : il_operand->datatype; + if (NULL == fb_decl) { - /* the il_operand is a not FB instance */ + /* the il_operand is a not FB instance, or it simply does not even exist, */ /* so we simply pass on the required datatype to the prev_il_instructions */ /* The invalid FB invocation will be caught in the print_datatypes_error_c by analysing NULL value in il_operand->datatype! */ set_datatype_in_prev_il_instructions(il_instruction->datatype, fake_prev_il_instruction); @@ -649,7 +649,11 @@ /*********************/ /* B 1.4 - Variables */ /*********************/ - +// SYM_REF1(symbolic_variable_c, var_name) +void *narrow_candidate_datatypes_c::visit(symbolic_variable_c *symbol) { + symbol->var_name->datatype = symbol->datatype; + return NULL; +} /********************************************/ /* B 1.4.1 - Directly Represented Variables */ /********************************************/ @@ -662,6 +666,14 @@ void *narrow_candidate_datatypes_c::visit(array_variable_c *symbol) { /* we need to check the data types of the expressions used for the subscripts... */ symbol->subscript_list->accept(*this); + + /* Set the datatype of the subscripted variable and visit it recursively. For the reason why we do this, */ + /* Please read the comments in the array_variable_c and structured_variable_c visitors in the fill_candidate_datatypes.cc file! */ + symbol->subscripted_variable->accept(*this); // visit recursively + + if (symbol->subscripted_variable->candidate_datatypes.size() == 1) + symbol->subscripted_variable->datatype = symbol->subscripted_variable->candidate_datatypes[0]; // set the datatype + return NULL; } @@ -681,6 +693,24 @@ +/* record_variable '.' field_selector */ +/* WARNING: input and/or output variables of function blocks + * may be accessed as fields of a structured variable! + * Code handling a structured_variable_c must take + * this into account! + */ +// SYM_REF2(structured_variable_c, record_variable, field_selector) +void *narrow_candidate_datatypes_c::visit(structured_variable_c *symbol) { + /* Set the datatype of the record_variable and visit it recursively. For the reason why we do this, */ + /* Please read the comments in the array_variable_c and structured_variable_c visitors in the fill_candidate_datatypes.cc file! */ + symbol->record_variable->accept(*this); // visit recursively + + if (symbol->record_variable->candidate_datatypes.size() == 1) + symbol->record_variable->datatype = symbol->record_variable->candidate_datatypes[0]; // set the datatype + + return NULL; +} + /******************************************/ /* B 1.4.3 - Declaration & Initialisation */ @@ -773,6 +803,24 @@ return NULL; } +/********************************************/ +/* B 1.6 Sequential function chart elements */ +/********************************************/ + +void *narrow_candidate_datatypes_c::visit(transition_condition_c *symbol) { + if (symbol->candidate_datatypes.size() != 1) + return NULL; + symbol->datatype = symbol->candidate_datatypes[0]; + if (symbol->transition_condition_il != NULL) { + symbol->transition_condition_il->datatype = symbol->datatype; + symbol->transition_condition_il->accept(*this); + } + if (symbol->transition_condition_st != NULL) { + symbol->transition_condition_st->datatype = symbol->datatype; + symbol->transition_condition_st->accept(*this); + } + return NULL; +} /********************************/ /* B 1.7 Configuration elements */ @@ -955,7 +1003,7 @@ * | il_call_operator prev_declared_fb_name '(' il_operand_list ')' * | il_call_operator prev_declared_fb_name '(' eol_list il_param_list ')' */ -/* NOTE: The parameter 'called_fb_declaration'is used to pass data between stage 3 and stage4 (although currently it is not used in stage 4 */ +/* NOTE: The parameter 'called_fb_declaration'is used to pass data between stage 3 and stage4 */ // SYM_REF4(il_fb_call_c, il_call_operator, fb_name, il_operand_list, il_param_list, symbol_c *called_fb_declaration) void *narrow_candidate_datatypes_c::visit(il_fb_call_c *symbol) { symbol_c *fb_decl = symbol->called_fb_declaration; @@ -1038,18 +1086,66 @@ /*******************/ /* B 2.2 Operators */ /*******************/ +/* Sets the datatype of the il_operand, and calls it recursively! + * + * NOTE 1: the il_operand __may__ be pointing to a parenthesized list of IL instructions. + * e.g. LD 33 + * AND ( 45 + * OR 56 + * ) + * When we handle the first 'AND' IL_operator, the il_operand will point to an simple_instr_list_c. + * In this case, when we call il_operand->accept(*this);, the prev_il_instruction pointer will be overwritten! + * + * So, if yoy wish to set the prev_il_instruction->datatype = symbol->datatype; + * do it __before__ calling set_il_operand_datatype() (which in turn calls il_operand->accept(*this)) !! + */ +void *narrow_candidate_datatypes_c::set_il_operand_datatype(symbol_c *il_operand, symbol_c *datatype) { + if (NULL == il_operand) return NULL; /* if no IL operand => error in the source code!! */ + + /* If il_operand already has a non-NULL datatype (remember, narrow algorithm runs twice over IL lists!), + * but narrow algorithm has not yet been able to determine what datatype it should take? This is strange, + * and most probably an error! + */ + if ((NULL != il_operand->datatype) && (NULL == datatype)) ERROR; + + /* If the il_operand's datatype has already been set previously, and + * the narrow algorithm has already determined the datatype the il_operand should take! + * ...we just make sure that the new datatype is the same as the current il_operand's datatype + */ + if ((NULL != il_operand->datatype) && (NULL != datatype)) { + /* Both datatypes are an invalid_type_name_c. This implies they are the same!! */ + if ((!get_datatype_info_c::is_type_valid(datatype)) && ((!get_datatype_info_c::is_type_valid(il_operand->datatype)))) + return NULL;; + /* OK, so both the datatypes are valid, but are they equal? */ + if ( !get_datatype_info_c::is_type_equal(il_operand->datatype, datatype)) + ERROR; + /* The datatypes are the same. We have nothing to do, so we simply return! */ + return NULL; + } + + /* Set the il_operand's datatype. Note that the new 'datatype' may even be NULL!!! */ + il_operand->datatype = datatype; + /* Even if we are not able to determine the il_operand's datatype ('datatype' is NULL), we still visit it recursively, + * to give a chance of any complex expressions embedded in the il_operand (e.g. expressions inside array subscripts!) + * to be narrowed too. + */ + il_operand->accept(*this); + return NULL; +} + + + + void *narrow_candidate_datatypes_c::narrow_binary_operator(const struct widen_entry widen_table[], symbol_c *symbol, bool *deprecated_operation) { symbol_c *prev_instruction_type, *operand_type; int count = 0; - if (NULL == symbol->datatype) - /* next IL instructions were unable to determine the datatype this instruction should produce */ - return NULL; - if (NULL != deprecated_operation) *deprecated_operation = false; - /* NOTE 1: the il_operand __may__ be pointing to a parenthesized list of IL instructions. + if (NULL == il_operand) return NULL; /* if no IL operand => error in the source code!! */ + + /* NOTE 1: the il_operand __may__ be pointing to a parenthesized list of IL instructions. * e.g. LD 33 * AND ( 45 * OR 56 @@ -1064,134 +1160,130 @@ * is pointing to will be later narrowed by the call from the for() loop of the instruction_list_c * (or simple_instr_list_c), which iterates backwards. */ - for(unsigned int i = 0; i < fake_prev_il_instruction->candidate_datatypes.size(); i++) { - for(unsigned int j = 0; j < il_operand->candidate_datatypes.size(); j++) { - prev_instruction_type = fake_prev_il_instruction->candidate_datatypes[i]; - operand_type = il_operand->candidate_datatypes[j]; - if (is_widening_compatible(widen_table, prev_instruction_type, operand_type, symbol->datatype, deprecated_operation)) { - /* set the desired datatype of the previous il instruction */ - set_datatype_in_prev_il_instructions(prev_instruction_type, fake_prev_il_instruction); - /* set the datatype for the operand */ - il_operand->datatype = operand_type; - il_operand->accept(*this); - - /* NOTE: DO NOT search any further! Return immediately! - * Since we support SAFE*** datatypes, multiple entries in the widen_table may be compatible. - * If we try to set more than one distinct datatype on the same symbol, then the datatype will be set to - * an invalid_datatype, which is NOT what we want! - */ - return NULL; + if (NULL != symbol->datatype) { // next IL instructions were able to determine the datatype this instruction should produce + for(unsigned int i = 0; i < fake_prev_il_instruction->candidate_datatypes.size(); i++) { + for(unsigned int j = 0; j < il_operand->candidate_datatypes.size(); j++) { + prev_instruction_type = fake_prev_il_instruction->candidate_datatypes[i]; + operand_type = il_operand->candidate_datatypes[j]; + if (is_widening_compatible(widen_table, prev_instruction_type, operand_type, symbol->datatype, deprecated_operation)) { + /* set the desired datatype of the previous il instruction */ + set_datatype_in_prev_il_instructions(prev_instruction_type, fake_prev_il_instruction); + /* set the datatype for the operand */ + set_il_operand_datatype(il_operand, operand_type); + + /* NOTE: DO NOT search any further! Return immediately! + * Since we support SAFE*** datatypes, multiple entries in the widen_table may be compatible. + * If we try to set more than one distinct datatype on the same symbol, then the datatype will be set to + * an invalid_datatype, which is NOT what we want! + */ + return NULL; + } } } } - return NULL; -} - - - - - -void *narrow_candidate_datatypes_c::handle_il_instruction(symbol_c *symbol) { - if (NULL == symbol->datatype) - /* next IL instructions were unable to determine the datatype this instruction should produce */ - return NULL; - /* NOTE 1: the il_operand __may__ be pointing to a parenthesized list of IL instructions. - * e.g. LD 33 - * AND ( 45 - * OR 56 - * ) - * When we handle the first 'AND' IL_operator, the il_operand will point to an simple_instr_list_c. - * In this case, when we call il_operand->accept(*this);, the prev_il_instruction pointer will be overwritten! - * - * We must therefore set the prev_il_instruction->datatype = symbol->datatype; - * __before__ calling il_operand->accept(*this) !! - * - * NOTE 2: We do not need to call prev_il_instruction->accept(*this), as the object to which prev_il_instruction - * is pointing to will be later narrowed by the call from the for() loop of the instruction_list_c - * (or simple_instr_list_c), which iterates backwards. - */ - /* set the desired datatype of the previous il instruction */ + /* We were not able to determine the required datatype, but we still give the il_operand a chance to be narrowed! */ + set_il_operand_datatype(il_operand, NULL); + return NULL; +} + + + + +/* Narrow IL operators whose execution is conditional on the boolean value in the accumulator. + * Basically, narrow the JMPC, JMPCN, RETC, RETCN, CALC, and CALCN operators! + * Also does part of the S and R operator narrowing!!! + */ +void *narrow_candidate_datatypes_c::narrow_conditional_operator(symbol_c *symbol) { + /* if the next IL instructions needs us to provide a datatype other than a BOOL or a SAFEBOOL, + * then we have an internal compiler error - most likely in fill_candidate_datatypes_c + */ + // I (mario) am confident the fill/narrow algorithms are working correctly, so for now we can disable the assertions! + //if ((NULL != symbol->datatype) && (!get_datatype_info_c::is_BOOL_compatible(symbol->datatype))) ERROR; + //if (symbol->candidate_datatypes.size() > 2) ERROR; /* may contain, at most, a BOOL and a SAFEBOOL */ + + /* NOTE: If there is no IL instruction following this S, R, CALC, CALCN, JMPC, JMPCN, RETC, or RETCN instruction, + * we must still provide a bool_type_name_c datatype (if possible, i.e. if it exists in the candidate datatype list). + * If it is not possible, we set it to NULL + * + * NOTE: Note that this algorithm we are implementing is slightly wrong. + * (a) It ignores that a SAFEBOOL may be needed instead of a BOOL datatype. + * (b) It also ignores that this method gets to be called twice on the same + * object (the narrow algorithm runs through the IL list twice in order to + * handle forward JMPs), so the assumption that we must immediately set our + * own datatype if we get called with a NULL symbol->datatype is incorrect + * (it may be that the second time it is called it will be with the correct datatype!). + * + * These two issues (a) and (b) together means that we should only really be setting our own + * datatype if we are certain that the following IL instructions will never set it for us + * - basically if the following IL instruction is a LD, or a JMP to a LD, or a JMP to a JMP to a LD, + * etc..., or a conditional JMP whose both branches go to LD, etc...!!! + * + * At the moment, it seems to me that we would need to write a visitor class to do this for us! + * I currently have other things on my mind at the moment, so I will leave this for later... + * For the moment we just set it to BOOL, and ignore the support of SAFEBOOL! + */ + if (NULL == symbol->datatype) set_datatype(&get_datatype_info_c::bool_type_name /* datatype*/, symbol /* symbol */); + if (NULL == symbol->datatype) ERROR; // the BOOL is not on the candidate_datatypes! Strange... Probably a bug in fill_candidate_datatype_c + + /* set the required datatype of the previous IL instruction, i.e. a bool_type_name_c! */ set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); - + return NULL; +} + + + +void *narrow_candidate_datatypes_c::narrow_S_and_R_operator(symbol_c *symbol, const char *param_name, symbol_c *called_fb_declaration) { + if (NULL != called_fb_declaration) + /* FB call semantics */ + return narrow_implicit_il_fb_call(symbol, param_name, called_fb_declaration); + + /* Set/Reset semantics */ + narrow_conditional_operator(symbol); + /* set the datatype for the il_operand */ + if ((NULL != il_operand) && (il_operand->candidate_datatypes.size() > 0)) + set_il_operand_datatype(il_operand, il_operand->candidate_datatypes[0]); + return NULL; +} + + + +void *narrow_candidate_datatypes_c::narrow_store_operator(symbol_c *symbol) { + if (symbol->candidate_datatypes.size() == 1) { + symbol->datatype = symbol->candidate_datatypes[0]; + /* set the desired datatype of the previous il instruction */ + set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); + /* In the case of the ST operator, we must set the datatype of the il_instruction_c object that points to this ST_operator_c ourselves, + * since the following il_instruction_c objects have not done it, as is normal/standard for other instructions! + */ + current_il_instruction->datatype = symbol->datatype; + } + /* set the datatype for the operand */ - il_operand->datatype = symbol->datatype; - il_operand->accept(*this); - return NULL; -} - - - - -void *narrow_candidate_datatypes_c::visit(LD_operator_c *symbol) { - if (NULL == symbol->datatype) - /* next IL instructions were unable to determine the datatype this instruction should produce */ - return NULL; - /* set the datatype for the operand */ - il_operand->datatype = symbol->datatype; - il_operand->accept(*this); - return NULL; -} - - -void *narrow_candidate_datatypes_c::visit(LDN_operator_c *symbol) { - if (NULL == symbol->datatype) - /* next IL instructions were unable to determine the datatype this instruction should produce */ - return NULL; - /* set the datatype for the operand */ - il_operand->datatype = symbol->datatype; - il_operand->accept(*this); - return NULL; -} - -void *narrow_candidate_datatypes_c::visit(ST_operator_c *symbol) { - if (symbol->candidate_datatypes.size() != 1) - return NULL; - symbol->datatype = symbol->candidate_datatypes[0]; - /* set the datatype for the operand */ - il_operand->datatype = symbol->datatype; - il_operand->accept(*this); - /* set the desired datatype of the previous il instruction */ - set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); - /* In the case of the ST operator, we must set the datatype of the il_instruction_c object that points to this ST_operator_c ourselves, - * since the following il_instruction_c objects have not done it, as is normal/standard for other instructions! - */ - current_il_instruction->datatype = symbol->datatype; - return NULL; -} - -void *narrow_candidate_datatypes_c::visit(STN_operator_c *symbol) { - if (symbol->candidate_datatypes.size() != 1) - return NULL; - symbol->datatype = symbol->candidate_datatypes[0]; - /* set the datatype for the operand */ - il_operand->datatype = symbol->datatype; - il_operand->accept(*this); - /* set the desired datatype of the previous il instruction */ - set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); - return NULL; -} - -void *narrow_candidate_datatypes_c::visit(NOT_operator_c *symbol) { - /* NOTE: the standard allows syntax in which the NOT operator is followed by an optional - * NOT [] - * However, it does not define the semantic of the NOT operation when the is specified. - * We therefore consider it an error if an il_operand is specified! - */ - /* We do not change the data type, we simply invert the bits in bit types! */ - /* So, we set the desired datatype of the previous il instruction */ - set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); - return NULL; -} - -void *narrow_candidate_datatypes_c::visit(S_operator_c *symbol) { - /* TODO: what if this is a FB call? */ - return handle_il_instruction(symbol); -} -void *narrow_candidate_datatypes_c::visit(R_operator_c *symbol) { - /* TODO: what if this is a FB call? */ - return handle_il_instruction(symbol); -} - + set_il_operand_datatype(il_operand, symbol->datatype); + return NULL; +} + + + +void *narrow_candidate_datatypes_c::visit( LD_operator_c *symbol) {return set_il_operand_datatype(il_operand, symbol->datatype);} +void *narrow_candidate_datatypes_c::visit( LDN_operator_c *symbol) {return set_il_operand_datatype(il_operand, symbol->datatype);} + +void *narrow_candidate_datatypes_c::visit( ST_operator_c *symbol) {return narrow_store_operator(symbol);} +void *narrow_candidate_datatypes_c::visit( STN_operator_c *symbol) {return narrow_store_operator(symbol);} + + +/* NOTE: the standard allows syntax in which the NOT operator is followed by an optional + * NOT [] + * However, it does not define the semantic of the NOT operation when the is specified. + * We therefore consider it an error if an il_operand is specified! + * This error will be detected in print_datatypes_error_c!! + */ +/* This operator does not change the data type, it simply inverts the bits in the ANT_BIT data types! */ +/* So, we merely set the desired datatype of the previous il instruction */ +void *narrow_candidate_datatypes_c::visit( NOT_operator_c *symbol) {set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction);return NULL;} + +void *narrow_candidate_datatypes_c::visit( S_operator_c *symbol) {return narrow_S_and_R_operator (symbol, "S", symbol->called_fb_declaration);} +void *narrow_candidate_datatypes_c::visit( R_operator_c *symbol) {return narrow_S_and_R_operator (symbol, "R", symbol->called_fb_declaration);} void *narrow_candidate_datatypes_c::visit( S1_operator_c *symbol) {return narrow_implicit_il_fb_call(symbol, "S1", symbol->called_fb_declaration);} void *narrow_candidate_datatypes_c::visit( R1_operator_c *symbol) {return narrow_implicit_il_fb_call(symbol, "R1", symbol->called_fb_declaration);} @@ -1221,44 +1313,17 @@ void *narrow_candidate_datatypes_c::visit( NE_operator_c *symbol) {return narrow_binary_operator(widen_CMP_table, symbol);} - - -void *narrow_candidate_datatypes_c::narrow_conditional_flow_control_IL_instruction(symbol_c *symbol) { - /* if the next IL instructions needs us to provide a datatype other than a bool, - * then we have an internal compiler error - most likely in fill_candidate_datatypes_c - */ - if ((NULL != symbol->datatype) && (!get_datatype_info_c::is_BOOL_compatible(symbol->datatype))) ERROR; - if (symbol->candidate_datatypes.size() > 1) ERROR; - - /* NOTE: If there is no IL instruction following this CALC, CALCN, JMPC, JMPC, ..., instruction, - * we must still provide a bool_type_name_c datatype (if possible, i.e. if it exists in the candidate datatype list). - * If it is not possible, we set it to NULL - */ - if (symbol->candidate_datatypes.size() == 0) symbol->datatype = NULL; - else symbol->datatype = symbol->candidate_datatypes[0]; /* i.e. a bool_type_name_c! */ - if ((NULL != symbol->datatype) && (!get_datatype_info_c::is_BOOL_compatible(symbol->datatype))) ERROR; - - /* set the required datatype of the previous IL instruction, i.e. a bool_type_name_c! */ - set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); - return NULL; -} - - -// SYM_REF0(CAL_operator_c) -// SYM_REF0(CALC_operator_c) -// SYM_REF0(CALCN_operator_c) -/* called from visit(il_fb_call_c *) {symbol->il_call_operator->accpet(*this)} */ +/* visitors to CAL_operator_c, CALC_operator_c and CALCN_operator_c are called from visit(il_fb_call_c *) {symbol->il_call_operator->accept(*this)} */ /* NOTE: The CAL, JMP and RET instructions simply set the desired datatype of the previous il instruction since they do not change the value in the current/default IL variable */ -/* called from il_fb_call_c (symbol->il_call_operator->accpet(*this) ) */ void *narrow_candidate_datatypes_c::visit( CAL_operator_c *symbol) {set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); return NULL;} void *narrow_candidate_datatypes_c::visit( RET_operator_c *symbol) {set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); return NULL;} void *narrow_candidate_datatypes_c::visit( JMP_operator_c *symbol) {set_datatype_in_prev_il_instructions(symbol->datatype, fake_prev_il_instruction); return NULL;} -void *narrow_candidate_datatypes_c::visit( CALC_operator_c *symbol) {return narrow_conditional_flow_control_IL_instruction(symbol);} -void *narrow_candidate_datatypes_c::visit(CALCN_operator_c *symbol) {return narrow_conditional_flow_control_IL_instruction(symbol);} -void *narrow_candidate_datatypes_c::visit( RETC_operator_c *symbol) {return narrow_conditional_flow_control_IL_instruction(symbol);} -void *narrow_candidate_datatypes_c::visit(RETCN_operator_c *symbol) {return narrow_conditional_flow_control_IL_instruction(symbol);} -void *narrow_candidate_datatypes_c::visit( JMPC_operator_c *symbol) {return narrow_conditional_flow_control_IL_instruction(symbol);} -void *narrow_candidate_datatypes_c::visit(JMPCN_operator_c *symbol) {return narrow_conditional_flow_control_IL_instruction(symbol);} +void *narrow_candidate_datatypes_c::visit( CALC_operator_c *symbol) {return narrow_conditional_operator(symbol);} +void *narrow_candidate_datatypes_c::visit(CALCN_operator_c *symbol) {return narrow_conditional_operator(symbol);} +void *narrow_candidate_datatypes_c::visit( RETC_operator_c *symbol) {return narrow_conditional_operator(symbol);} +void *narrow_candidate_datatypes_c::visit(RETCN_operator_c *symbol) {return narrow_conditional_operator(symbol);} +void *narrow_candidate_datatypes_c::visit( JMPC_operator_c *symbol) {return narrow_conditional_operator(symbol);} +void *narrow_candidate_datatypes_c::visit(JMPCN_operator_c *symbol) {return narrow_conditional_operator(symbol);} /* Symbol class handled together with function call checks */ // void *visit(il_assign_operator_c *symbol, variable_name); diff -r c95f42f28b69 -r 1f8885ae539a stage3/narrow_candidate_datatypes.hh --- a/stage3/narrow_candidate_datatypes.hh Fri Jul 19 13:31:35 2013 +0100 +++ b/stage3/narrow_candidate_datatypes.hh Fri Aug 23 15:13:11 2013 +0100 @@ -71,20 +71,21 @@ bool is_widening_compatible(const struct widen_entry widen_table[], symbol_c *left_type, symbol_c *right_type, symbol_c *result_type, bool *deprecated_status = NULL); - void narrow_function_invocation(symbol_c *f_call, generic_function_call_t fcall_data); - void narrow_nonformal_call(symbol_c *f_call, symbol_c *f_decl, int *ext_parm_count = NULL); - void narrow_formal_call(symbol_c *f_call, symbol_c *f_decl, int *ext_parm_count = NULL); - void *narrow_implicit_il_fb_call(symbol_c *il_instruction, const char *param_name, symbol_c *&called_fb_declaration); - - void *handle_il_instruction(symbol_c *symbol); + void *narrow_spec_init (symbol_c *symbol, symbol_c *type_decl, symbol_c *init_value); + void *narrow_type_decl (symbol_c *symbol, symbol_c *type_name, symbol_c *spec_init); + void narrow_function_invocation (symbol_c *f_call, generic_function_call_t fcall_data); + void narrow_nonformal_call (symbol_c *f_call, symbol_c *f_decl, int *ext_parm_count = NULL); + void narrow_formal_call (symbol_c *f_call, symbol_c *f_decl, int *ext_parm_count = NULL); + void *narrow_implicit_il_fb_call (symbol_c *symbol, const char *param_name, symbol_c *&called_fb_declaration); + void *narrow_S_and_R_operator (symbol_c *symbol, const char *param_name, symbol_c * called_fb_declaration); + void *narrow_store_operator (symbol_c *symbol); + void *narrow_conditional_operator(symbol_c *symbol); void *narrow_binary_operator (const struct widen_entry widen_table[], symbol_c *symbol, bool *deprecated_operation = NULL); void *narrow_binary_expression (const struct widen_entry widen_table[], symbol_c *symbol, symbol_c *l_expr, symbol_c *r_expr, bool *deprecated_operation = NULL, bool allow_enums = false); void *narrow_equality_comparison(const struct widen_entry widen_table[], symbol_c *symbol, symbol_c *l_expr, symbol_c *r_expr, bool *deprecated_operation = NULL); - void *narrow_spec_init(symbol_c *symbol, symbol_c *type_decl, symbol_c *init_value); - void *narrow_type_decl(symbol_c *symbol, symbol_c *type_name, symbol_c *spec_init); - - void *narrow_conditional_flow_control_IL_instruction(symbol_c *symbol); + void *set_il_operand_datatype (symbol_c *il_operand, symbol_c *datatype); + public: @@ -181,6 +182,7 @@ /*********************/ /* B 1.4 - Variables */ /*********************/ + void *visit(symbolic_variable_c *symbol); /********************************************/ /* B 1.4.1 - Directly Represented Variables */ /********************************************/ @@ -189,6 +191,7 @@ /*************************************/ void *visit(array_variable_c *symbol); void *visit(subscript_list_c *symbol); + void *visit(structured_variable_c *symbol); /******************************************/ /* B 1.4.3 - Declaration & Initialisation */ @@ -215,6 +218,12 @@ /**********************/ void *visit(program_declaration_c *symbol); + /********************************************/ + /* B 1.6 Sequential function chart elements */ + /********************************************/ + + void *visit(transition_condition_c *symbol); + /********************************/ /* B 1.7 Configuration elements */ /********************************/ diff -r c95f42f28b69 -r 1f8885ae539a stage3/print_datatypes_error.cc --- a/stage3/print_datatypes_error.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/stage3/print_datatypes_error.cc Fri Aug 23 15:13:11 2013 +0100 @@ -160,7 +160,7 @@ function_param_iterator_c fp_iterator(f_decl); while ((param_name = fcp_iterator.next_f()) != NULL) { param_value = fcp_iterator.get_current_value(); - + /* Check if there are duplicate parameter values */ if(fcp_iterator.search_f(param_name) != param_value) { function_invocation_error = true; @@ -195,7 +195,7 @@ } } else ERROR; - if (NULL == param_value->datatype) { + if (!get_datatype_info_c::is_type_valid(param_value->datatype)) { function_invocation_error = true; STAGE3_ERROR(0, param_value, param_value, "Data type incompatibility between parameter '%s' and value being passed, when invoking %s '%s'", ((identifier_c *)param_name)->value, POU_str, ((identifier_c *)fcall_data.function_name)->value); continue; /* jump to next parameter */ @@ -204,7 +204,6 @@ } } if (NULL != fcall_data.nonformal_operand_list) { - fcall_data.nonformal_operand_list->accept(*this); if (f_decl) for (int i = 1; (param_value = fcp_iterator.next_nf()) != NULL; i++) { /* TODO: verify if it is lvalue when INOUT or OUTPUT parameters! */ @@ -251,10 +250,12 @@ if (function_invocation_error) /* when handling a IL function call, and an error is found in the first parameter, then we bug out and do not print out any more error messages. */ return; - } - else if (!get_datatype_info_c::is_type_valid(param_value->datatype)) { - function_invocation_error = true; - STAGE3_ERROR(0, param_value, param_value, "Data type incompatibility for value passed in position %d when invoking %s '%s'", i, POU_str, ((identifier_c *)fcall_data.function_name)->value); + } else { + if (!get_datatype_info_c::is_type_valid(param_value->datatype)) { + function_invocation_error = true; + STAGE3_ERROR(0, param_value, param_value, "Data type incompatibility for value passed in position %d when invoking %s '%s'", i, POU_str, ((identifier_c *)fcall_data.function_name)->value); + } + param_value->accept(*this); } } } @@ -279,7 +280,7 @@ STAGE3_ERROR(0, il_operator, il_operator, "Missing operand for FB call operator '%s'.", param_name); return NULL; } - il_operand->accept(*this); + // il_operand->accept(*this); // NOT required. The il_simple_operation_c already visits it!! if (NULL == called_fb_declaration) { STAGE3_ERROR(0, il_operator, il_operand, "Invalid FB call: operand is not a FB instance."); @@ -315,7 +316,7 @@ * the __only__ indication of an error! So we test it here again, to make sure thtis error will really * be printed out! */ - if (NULL == il_operand->datatype) { + if (!get_datatype_info_c::is_type_valid(il_operand->datatype)) { /* Note: the case of (NULL == fb_declaration) was already caught above! */ // if (NULL != fb_declaration) { STAGE3_ERROR(0, il_operator, il_operator, "Invalid FB call: Datatype incompatibility between the FB's '%s' parameter and value being passed, or paramater '%s' is not a 'VAR_INPUT' parameter.", param_name, param_name); @@ -336,7 +337,7 @@ void *print_datatypes_error_c::visit(real_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_REAL data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_REAL data type not valid in this location."); } return NULL; @@ -345,7 +346,7 @@ void *print_datatypes_error_c::visit(integer_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location."); } return NULL; @@ -354,7 +355,7 @@ void *print_datatypes_error_c::visit(neg_real_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_REAL data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_REAL data type not valid in this location."); } return NULL; @@ -363,7 +364,7 @@ void *print_datatypes_error_c::visit(neg_integer_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location."); } return NULL; @@ -372,7 +373,7 @@ void *print_datatypes_error_c::visit(binary_integer_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location."); } return NULL; @@ -381,7 +382,7 @@ void *print_datatypes_error_c::visit(octal_integer_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location."); } return NULL; @@ -390,7 +391,7 @@ void *print_datatypes_error_c::visit(hex_integer_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location."); } return NULL; @@ -399,7 +400,7 @@ void *print_datatypes_error_c::visit(integer_literal_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for %s data type.", get_datatype_info_c::get_id_str(symbol->type)); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location."); } return NULL; @@ -408,7 +409,7 @@ void *print_datatypes_error_c::visit(real_literal_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for %s data type.", get_datatype_info_c::get_id_str(symbol->type)); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_REAL data type not valid in this location."); } return NULL; @@ -417,7 +418,7 @@ void *print_datatypes_error_c::visit(bit_string_literal_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for %s data type.", get_datatype_info_c::get_id_str(symbol->type)); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_BIT data type not valid in this location."); } return NULL; @@ -426,7 +427,7 @@ void *print_datatypes_error_c::visit(boolean_literal_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Value is not valid for %s data type.", get_datatype_info_c::get_id_str(symbol->type)); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_BOOL data type not valid in this location."); } return NULL; @@ -435,7 +436,7 @@ void *print_datatypes_error_c::visit(boolean_true_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Value is not valid for ANY_BOOL data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_BOOL data type not valid in this location."); } return NULL; @@ -444,7 +445,7 @@ void *print_datatypes_error_c::visit(boolean_false_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Value is not valid for ANY_BOOL data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "ANY_BOOL data type not valid in this location."); } return NULL; @@ -456,7 +457,7 @@ void *print_datatypes_error_c::visit(double_byte_character_string_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for WSTRING data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "WSTRING data type not valid in this location."); } return NULL; @@ -465,7 +466,7 @@ void *print_datatypes_error_c::visit(single_byte_character_string_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for STRING data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "STRING data type not valid in this location."); } return NULL; @@ -480,7 +481,7 @@ void *print_datatypes_error_c::visit(duration_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for TIME data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "TIME data type not valid in this location."); } return NULL; @@ -492,7 +493,7 @@ void *print_datatypes_error_c::visit(time_of_day_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for TOD data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "TOD data type not valid in this location."); } return NULL; @@ -501,7 +502,7 @@ void *print_datatypes_error_c::visit(date_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for DATE data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "DATE data type not valid in this location."); } return NULL; @@ -510,7 +511,7 @@ void *print_datatypes_error_c::visit(date_and_time_c *symbol) { if (symbol->candidate_datatypes.size() == 0) { STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for DT data type."); - } else if (NULL == symbol->datatype) { + } else if (!get_datatype_info_c::is_type_valid(symbol->datatype)) { STAGE3_ERROR(4, symbol, symbol, "DT data type not valid in this location."); } return NULL; @@ -569,6 +570,10 @@ /* subscripted_variable '[' subscript_list ']' */ // SYM_REF2(array_variable_c, subscripted_variable, subscript_list) void *print_datatypes_error_c::visit(array_variable_c *symbol) { + /* the subscripted variable may be a structure or another array variable, that must also be visisted! */ + /* Please read the comments in the array_variable_c and structured_variable_c visitors in the fill_candidate_datatypes.cc file! */ + symbol->subscripted_variable->accept(*this); + if (symbol->candidate_datatypes.size() == 0) STAGE3_ERROR(0, symbol, symbol, "Array variable not declared in this scope."); @@ -584,7 +589,7 @@ int start_error_count = error_count; symbol->elements[i]->accept(*this); /* The following error message will only get printed if the current_display_error_level is set higher than 0! */ - if ((start_error_count == error_count) && (NULL == symbol->elements[i]->datatype)) + if ((start_error_count == error_count) && (!get_datatype_info_c::is_type_valid(symbol->elements[i]->datatype))) STAGE3_ERROR(0, symbol, symbol, "Invalid data type for array subscript field."); } return NULL; @@ -598,13 +603,13 @@ * this into account! */ // SYM_REF2(structured_variable_c, record_variable, field_selector) -/* NOTE: We do not recursively determine the data types of each field_selector in fill_candidate_datatypes_c, - * so it does not make sense to recursively visit all the field_selectors to print out error messages. - * Maybe in the future, if we find the need to print out more detailed error messages, we might do it that way. For now, we don't! - */ void *print_datatypes_error_c::visit(structured_variable_c *symbol) { + /* the record variable may be another structure or even an array variable, that must also be visisted! */ + /* Please read the comments in the array_variable_c and structured_variable_c visitors in the fill_candidate_datatypes.cc file! */ + symbol->record_variable->accept(*this); + if (symbol->candidate_datatypes.size() == 0) - STAGE3_ERROR(0, symbol, symbol, "Undeclared structured/FB variable."); + STAGE3_ERROR(0, symbol, symbol, "Undeclared structured (or FB) variable, or non-existant field (variable) in structure (FB)."); return NULL; } @@ -757,10 +762,8 @@ void *print_datatypes_error_c::visit(il_simple_operation_c *symbol) { il_operand = symbol->il_operand; - if (NULL != symbol->il_operand) { - symbol->il_operand->accept(*this); - } - /* recursive call to see whether data types are compatible */ + if (NULL != il_operand) symbol->il_operand->accept(*this); /* recursive call to see whether data types are compatible */ + symbol->il_simple_operator->accept(*this); il_operand = NULL; return NULL; @@ -929,50 +932,22 @@ /* B 2.2 Operators */ /*******************/ void *print_datatypes_error_c::print_binary_operator_errors(const char *il_operator, symbol_c *symbol, bool deprecated_operation) { - if ((symbol->candidate_datatypes.size() == 0) && (il_operand->candidate_datatypes.size() > 0)) { - STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '%s' operator.", il_operator); - } else if (NULL == symbol->datatype) { - STAGE3_WARNING(symbol, symbol, "Result of '%s' operation is never used.", il_operator); + if (NULL == il_operand) { + STAGE3_ERROR(0, symbol, symbol, "Missing operand for %s operator.", il_operator); // message (a) + } else if ((symbol->candidate_datatypes.size() == 0) && (il_operand->candidate_datatypes.size() > 0)) { + STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '%s' operator.", il_operator); // message (b) + } else if (NULL == symbol->datatype) { // do NOT use !get_datatype_info_c::is_type_valid() here! + STAGE3_WARNING(symbol, symbol, "Result of '%s' operation is never used.", il_operator); // message (c) } else if (deprecated_operation) - STAGE3_WARNING(symbol, symbol, "Deprecated operation for '%s' operator.", il_operator); - return NULL; -} - - -void *print_datatypes_error_c::visit(LD_operator_c *symbol) { - return NULL; -} - -void *print_datatypes_error_c::visit(LDN_operator_c *symbol) { - if ((symbol->candidate_datatypes.size() == 0) && - (il_operand->candidate_datatypes.size() > 0)) - STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'LDN' operator."); - return NULL; -} - -void *print_datatypes_error_c::visit(ST_operator_c *symbol) { - /* MANU: - * if prev_instruction is NULL we can print a message error or warning error like: - * we can't use a ST like first instruction. - * What do you think? - */ - if ((symbol->candidate_datatypes.size() == 0) && - (il_operand->candidate_datatypes.size() > 0)) - STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'ST' operator."); - return NULL; -} - -void *print_datatypes_error_c::visit(STN_operator_c *symbol) { - /* MANU: - * if prev_instruction is NULL we can print a message error or warning error like: - * we can't use a ST like first instruction. - * What do you think? - */ - if ((symbol->candidate_datatypes.size() == 0) && - (il_operand->candidate_datatypes.size() > 0)) - STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'STN' operator."); - return NULL; -} + STAGE3_WARNING(symbol, symbol, "Deprecated operation for '%s' operator.", il_operator); // message (d) + return NULL; +} + + +void *print_datatypes_error_c::visit( LD_operator_c *symbol) {return print_binary_operator_errors("LD" , symbol);} // I believe it will never emit messages (b) and (c)!! +void *print_datatypes_error_c::visit( LDN_operator_c *symbol) {return print_binary_operator_errors("LDN" , symbol);} // I believe it will never emit message (c) +void *print_datatypes_error_c::visit( ST_operator_c *symbol) {return print_binary_operator_errors("ST" , symbol);} // I believe it will never emit message (c) +void *print_datatypes_error_c::visit( STN_operator_c *symbol) {return print_binary_operator_errors("STN" , symbol);} // I believe it will never emit message (c) void *print_datatypes_error_c::visit(NOT_operator_c *symbol) { /* NOTE: the standard allows syntax in which the NOT operator is followed by an optional @@ -980,27 +955,21 @@ * However, it does not define the semantic of the NOT operation when the is specified. * We therefore consider it an error if an il_operand is specified! */ - if (il_operand != NULL) + if (il_operand != NULL) { STAGE3_ERROR(0, symbol, symbol, "'NOT' operator may not have an operand."); - if (symbol->candidate_datatypes.size() == 0) + } else if (symbol->candidate_datatypes.size() == 0) STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'NOT' operator."); return NULL; } void *print_datatypes_error_c::visit(S_operator_c *symbol) { - /* TODO: what if this is a FB call ?? */ - if ((symbol->candidate_datatypes.size() == 0) && - (il_operand->candidate_datatypes.size() > 0)) - STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'S' operator."); - return NULL; + if (NULL != symbol->called_fb_declaration) /* FB call semantics */ return handle_implicit_il_fb_invocation("S", symbol, symbol->called_fb_declaration); + else /* Reset semantics */ return print_binary_operator_errors ("S", symbol); } void *print_datatypes_error_c::visit(R_operator_c *symbol) { - /* TODO: what if this is a FB call ?? */ - if ((symbol->candidate_datatypes.size() == 0) && - (il_operand->candidate_datatypes.size() > 0)) - STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'R' operator."); - return NULL; + if (NULL != symbol->called_fb_declaration) /* FB call semantics */ return handle_implicit_il_fb_invocation("R", symbol, symbol->called_fb_declaration); + else /* Reset semantics */ return print_binary_operator_errors ("R", symbol); } void *print_datatypes_error_c::visit( S1_operator_c *symbol) {return handle_implicit_il_fb_invocation( "S1", symbol, symbol->called_fb_declaration);} @@ -1035,7 +1004,7 @@ void *print_datatypes_error_c::handle_conditional_flow_control_IL_instruction(symbol_c *symbol, const char *oper) { - if (NULL == symbol->datatype) + if (!get_datatype_info_c::is_type_valid(symbol->datatype)) STAGE3_ERROR(0, symbol, symbol, "%s operator must be preceded by an IL instruction producing a BOOL value.", oper); return NULL; } @@ -1142,10 +1111,10 @@ void *print_datatypes_error_c::visit(assignment_statement_c *symbol) { symbol->l_exp->accept(*this); symbol->r_exp->accept(*this); - if ((NULL == symbol->l_exp->datatype) && - (NULL == symbol->r_exp->datatype) && - (symbol->l_exp->candidate_datatypes.size() > 0) && - (symbol->r_exp->candidate_datatypes.size() > 0)) + if ((!get_datatype_info_c::is_type_valid(symbol->l_exp->datatype)) && + (!get_datatype_info_c::is_type_valid(symbol->r_exp->datatype)) && + (symbol->l_exp->candidate_datatypes.size() > 0) && + (symbol->r_exp->candidate_datatypes.size() > 0)) STAGE3_ERROR(0, symbol, symbol, "Incompatible data types for ':=' operation."); return NULL; } @@ -1183,8 +1152,8 @@ void *print_datatypes_error_c::visit(if_statement_c *symbol) { symbol->expression->accept(*this); - if ((NULL == symbol->expression->datatype) && - (symbol->expression->candidate_datatypes.size() > 0)) { + if ((!get_datatype_info_c::is_type_valid(symbol->expression->datatype)) && + (symbol->expression->candidate_datatypes.size() > 0)) { STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'IF' condition."); } if (NULL != symbol->statement_list) @@ -1198,8 +1167,8 @@ void *print_datatypes_error_c::visit(elseif_statement_c *symbol) { symbol->expression->accept(*this); - if ((NULL == symbol->expression->datatype) && - (symbol->expression->candidate_datatypes.size() > 0)) { + if ((!get_datatype_info_c::is_type_valid(symbol->expression->datatype)) && + (symbol->expression->candidate_datatypes.size() > 0)) { STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'ELSIF' condition."); } if (NULL != symbol->statement_list) @@ -1210,8 +1179,8 @@ void *print_datatypes_error_c::visit(case_statement_c *symbol) { symbol->expression->accept(*this); - if ((NULL == symbol->expression->datatype) && - (symbol->expression->candidate_datatypes.size() > 0)) { + if ((!get_datatype_info_c::is_type_valid(symbol->expression->datatype)) && + (symbol->expression->candidate_datatypes.size() > 0)) { STAGE3_ERROR(0, symbol, symbol, "'CASE' quantity not an integer or enumerated."); } symbol->case_element_list->accept(*this); @@ -1229,24 +1198,24 @@ symbol->beg_expression->accept(*this); symbol->end_expression->accept(*this); /* Control variable */ - if ((NULL == symbol->control_variable->datatype) && - (symbol->control_variable->candidate_datatypes.size() > 0)) { + if ((!get_datatype_info_c::is_type_valid(symbol->control_variable->datatype)) && + (symbol->control_variable->candidate_datatypes.size() > 0)) { STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' control variable."); } /* BEG expression */ - if ((NULL == symbol->beg_expression->datatype) && - (symbol->beg_expression->candidate_datatypes.size() > 0)) { + if ((!get_datatype_info_c::is_type_valid(symbol->beg_expression->datatype)) && + (symbol->beg_expression->candidate_datatypes.size() > 0)) { STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' begin expression."); } /* END expression */ - if ((NULL == symbol->end_expression->datatype) && - (symbol->end_expression->candidate_datatypes.size() > 0)) { + if ((!get_datatype_info_c::is_type_valid(symbol->end_expression->datatype)) && + (symbol->end_expression->candidate_datatypes.size() > 0)) { STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' end expression."); } /* BY expression */ if ((NULL != symbol->by_expression) && - (NULL == symbol->by_expression->datatype) && - (symbol->end_expression->candidate_datatypes.size() > 0)) { + (!get_datatype_info_c::is_type_valid(symbol->by_expression->datatype)) && + (symbol->end_expression->candidate_datatypes.size() > 0)) { STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' by expression."); } /* DO statement */ diff -r c95f42f28b69 -r 1f8885ae539a stage4/Makefile.in --- a/stage4/Makefile.in Fri Jul 19 13:31:35 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,537 +0,0 @@ -# Makefile.in generated by automake 1.11.3 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software -# Foundation, Inc. -# This Makefile.in is free software; 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- if (time < 0) ERROR; - else update_ticktime(time); + if (symbol->interval_data_source != NULL) { + unsigned long long time = calculate_time(symbol->interval_data_source); + if (time < 0) ERROR; + else update_ticktime(time); + } return NULL; } }; diff -r c95f42f28b69 -r 1f8885ae539a stage4/generate_c/generate_c_il.cc --- a/stage4/generate_c/generate_c_il.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/stage4/generate_c/generate_c_il.cc Fri Aug 23 15:13:11 2013 +0100 @@ -410,9 +410,10 @@ symbol_c* fb_value = NULL, bool negative = false) { - bool type_is_complex = search_var_instance_decl->type_is_complex(symbol); + bool type_is_complex = false; if (fb_symbol == NULL) { unsigned int vartype = search_var_instance_decl->get_vartype(symbol); + type_is_complex = search_var_instance_decl->type_is_complex(symbol); if (vartype == search_var_instance_decl_c::external_vt) { if (search_var_instance_decl->type_is_fb(symbol)) s4o.print(SET_EXTERNAL_FB); @@ -446,7 +447,7 @@ symbol->accept(*this); s4o.print(","); if (negative) { - if (get_datatype_info_c::is_BOOL_compatible(this->current_operand->datatype)) + if (get_datatype_info_c::is_BOOL_compatible(this->current_operand->datatype)) s4o.print("!"); else s4o.print("~"); @@ -839,6 +840,14 @@ break; } + /* We do not yet support embedded IL lists, so we abort the compiler if we find one */ + /* Note that in IL function calls the syntax does not allow embeded IL lists, so this check is not necessary here! */ + /* + {simple_instr_list_c *instruction_list = dynamic_cast(param_value); + if (NULL != instruction_list) STAGE4_ERROR(param_value, param_value, "The compiler does not yet support formal invocations in IL that contain embedded IL lists. Aborting!"); + } + */ + if ((param_value == NULL) && (param_direction == function_param_iterator_c::direction_in)) { /* No value given for parameter, so we must use the default... */ /* First check whether default value specified in function declaration...*/ @@ -1060,6 +1069,11 @@ if ((param_value == NULL) && !fp_iterator.is_en_eno_param_implicit()) param_value = function_call_param_iterator.next_nf(); + /* We do not yet support embedded IL lists, so we abort the compiler if we find one */ + {simple_instr_list_c *instruction_list = dynamic_cast(param_value); + if (NULL != instruction_list) STAGE4_ERROR(param_value, param_value, "The compiler does not yet support formal invocations in IL that contain embedded IL lists. Aborting!"); + } + symbol_c *param_type = fp_iterator.param_type(); if (param_type == NULL) ERROR; @@ -1228,6 +1242,11 @@ break; } + /* We do not yet support embedded IL lists, so we abort the compiler if we find one */ + {simple_instr_list_c *instruction_list = dynamic_cast(param_value); + if (NULL != instruction_list) STAGE4_ERROR(param_value, param_value, "The compiler does not yet support formal invocations in IL that contain embedded IL lists. Aborting!"); + } + if ((param_value == NULL) && (param_direction == function_param_iterator_c::direction_in)) { /* No value given for parameter, so we must use the default... */ /* First check whether default value specified in function declaration...*/ @@ -1530,6 +1549,16 @@ void *visit(S_operator_c *symbol) { + /* This operator must implement one of two possible semantics: + * - FB call + * - Set all the bits of an ANY_BIT type variable to 1 + */ + + /* Check whether we must implement the FB call semantics... */ + if (NULL != symbol->called_fb_declaration) + return XXX_CAL_operator( "S", this->current_operand); + + /* Implement the bit setting semantics... */ if (wanted_variablegeneration != expression_vg) { s4o.print("LD"); return NULL; @@ -1552,6 +1581,16 @@ void *visit(R_operator_c *symbol) { + /* This operator must implement one of two possible semantics: + * - FB call + * - Set all the bits of an ANY_BIT type variable to 0 + */ + + /* Check whether we must implement the FB call semantics... */ + if (NULL != symbol->called_fb_declaration) + return XXX_CAL_operator( "R", this->current_operand); + + /* Implement the bit setting semantics... */ if (wanted_variablegeneration != expression_vg) { s4o.print("LD"); return NULL; diff -r c95f42f28b69 -r 1f8885ae539a stage4/generate_c/generate_c_inlinefcall.cc --- a/stage4/generate_c/generate_c_inlinefcall.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/stage4/generate_c/generate_c_inlinefcall.cc Fri Aug 23 15:13:11 2013 +0100 @@ -512,6 +512,14 @@ break; } + /* We do not yet support embedded IL lists, so we abort the compiler if we find one */ + /* Note that in IL function calls the syntax does not allow embeded IL lists, so this check is not necessary here! */ + /* + {simple_instr_list_c *instruction_list = dynamic_cast(param_value); + if (NULL != instruction_list) STAGE4_ERROR(param_value, param_value, "The compiler does not yet support formal invocations in IL that contain embedded IL lists. Aborting!"); + } + */ + if ((param_value == NULL) && (param_direction == function_param_iterator_c::direction_in)) { /* No value given for parameter, so we must use the default... */ /* First check whether default value specified in function declaration...*/ @@ -669,7 +677,12 @@ if ((param_value == NULL) && (fp_iterator.is_extensible_param())) { break; } - + + /* We do not yet support embedded IL lists, so we abort the compiler if we find one */ + {simple_instr_list_c *instruction_list = dynamic_cast(param_value); + if (NULL != instruction_list) STAGE4_ERROR(param_value, param_value, "The compiler does not yet support formal invocations in IL that contain embedded IL lists. Aborting!"); + } + if ((param_value == NULL) && (param_direction == function_param_iterator_c::direction_in)) { /* No value given for parameter, so we must use the default... */ /* First check whether default value specified in function declaration...*/ diff -r c95f42f28b69 -r 1f8885ae539a stage4/generate_c/generate_c_st.cc --- a/stage4/generate_c/generate_c_st.cc Fri Jul 19 13:31:35 2013 +0100 +++ b/stage4/generate_c/generate_c_st.cc Fri Aug 23 15:13:11 2013 +0100 @@ -247,6 +247,12 @@ return NULL; } +/* enumerated_type_name ':' enumerated_spec_init */ +void *visit(enumerated_type_declaration_c *symbol) { + symbol->enumerated_type_name->accept(*this); + return NULL; +} + /*********************/ /* B 1.4 - Variables */ /*********************/ diff -r c95f42f28b69 -r 1f8885ae539a stage4/generate_iec/Makefile.in --- a/stage4/generate_iec/Makefile.in Fri Jul 19 13:31:35 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,495 +0,0 @@ -# Makefile.in generated by automake 1.11.3 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software -# Foundation, Inc. -# This Makefile.in is free software; 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