etisserant@0: /*
etisserant@0:  * (c) 2003 Mario de Sousa
etisserant@0:  *
etisserant@0:  * Offered to the public under the terms of the GNU General Public License
etisserant@0:  * as published by the Free Software Foundation; either version 2 of the
etisserant@0:  * License, or (at your option) any later version.
etisserant@0:  *
etisserant@0:  * This program is distributed in the hope that it will be useful, but
etisserant@0:  * WITHOUT ANY WARRANTY; without even the implied warranty of
etisserant@0:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
etisserant@0:  * Public License for more details.
etisserant@0:  *
etisserant@0:  * This code is made available on the understanding that it will not be
etisserant@0:  * used in safety-critical situations without a full and competent review.
etisserant@0:  */
etisserant@0: 
etisserant@0: /*
etisserant@0:  * An IEC 61131-3 IL and ST compiler.
etisserant@0:  *
etisserant@0:  * Based on the
etisserant@0:  * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
etisserant@0:  *
etisserant@0:  */
etisserant@0: 
etisserant@0: 
etisserant@0: /*
etisserant@0:  * Conversion of basic abstract syntax constructs.
etisserant@0:  *
etisserant@0:  * This is part of the 4th stage that generates
etisserant@0:  * a c++ source program equivalent to the IL and ST
etisserant@0:  * code.
etisserant@0:  */
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: //#include <stdio.h>  /* required for NULL */
etisserant@0: //#include <string>
etisserant@0: //#include <iostream>
etisserant@0: 
etisserant@0: //#include "../../util/symtable.hh"
etisserant@0: 
etisserant@0: //#include "generate_cc.hh"
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: class generate_cc_base_c: public iterator_visitor_c {
etisserant@0: 
etisserant@0:   protected:
etisserant@0:     stage4out_c &s4o;
etisserant@0: 
etisserant@0:   private:
etisserant@0:     /* Unlike programs that are mapped onto C++ classes, Function Blocks are mapped onto a data structure type
etisserant@0:      * and a separate function conatining the code. This function is passed a pointer to an instance of the data
etisserant@0:      * structure. This means that the code inside the functions must insert a pointer to the data structure whenever
etisserant@0:      * it wishes to access a Function Block variable.
etisserant@0:      * The variable_prefix_ variable will contain the correct string which needs to be prefixed to all variable accesses.
etisserant@0:      * This string is set with the set_variable_prefix() member function.
etisserant@0:      */
etisserant@0:     const char *variable_prefix_;
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0:   public:
etisserant@0:     generate_cc_base_c(stage4out_c *s4o_ptr): s4o(*s4o_ptr) {variable_prefix_ = NULL;}
etisserant@0:     ~generate_cc_base_c(void) {}
etisserant@0: 
etisserant@0:     void set_variable_prefix(const char *variable_prefix) {variable_prefix_ = variable_prefix;}
etisserant@0:     void print_variable_prefix(void) {
etisserant@0:       if (variable_prefix_ != NULL)
etisserant@0:         s4o.print(variable_prefix_);
etisserant@0:     }
etisserant@0: 
etisserant@0:     void *print_token(token_c *token, int offset = 0) {
etisserant@0:       return s4o.printupper((token->value)+offset);
etisserant@0:     }
etisserant@0: 
etisserant@0:     void *print_literal(symbol_c *type, symbol_c *value) {
etisserant@0:       s4o.print("(");
etisserant@0:       type->accept(*this);
etisserant@0:       s4o.print(")");
etisserant@0:       value->accept(*this);
etisserant@0:       return NULL;
etisserant@0:     }
etisserant@0: 
etisserant@0:     void *print_striped_token(token_c *token, int offset = 0) {
etisserant@0:       std::string str = "";
etisserant@0:       for (unsigned int i = offset; i < strlen(token->value); i++)
etisserant@0:         if (token->value[i] != '_')
etisserant@0:           str += token->value[i];
etisserant@0:       return s4o.printupper(str);
etisserant@0:     }
etisserant@0: 
etisserant@0:     void *print_striped_binary_token(token_c *token, unsigned int offset = 0) {
etisserant@0:       /* convert the binary value to hexadecimal format... */
etisserant@0:       unsigned char value, bit_mult;
etisserant@0:       unsigned int i;
etisserant@0:       int total_bits;
etisserant@0:       char str[2] = {'A', '\0'};  /* since the s4o object is not prepared to print out one character at a time... */
etisserant@0: 
etisserant@0:       s4o.print("0x");
etisserant@0: 
etisserant@0:       total_bits = 0;
etisserant@0:       for (i = offset; i < strlen(token->value); i++)
etisserant@0:         if (token->value[i] != '_')
etisserant@0: 	  total_bits++;
etisserant@0: 
etisserant@0:       value = 0;
etisserant@0:       bit_mult = (unsigned char)1 << (((total_bits+3)%4)+1);
etisserant@0:       for (i = offset; i < strlen(token->value); i++) {
etisserant@0:         if (token->value[i] != '_') {
etisserant@0: 	  bit_mult /= 2;
etisserant@0: 	  value += bit_mult * ((token->value[i] == '0')? 0:1);
etisserant@0: 	  if (bit_mult == 1) {
etisserant@0: 	    str[0] = (value <= 9)? (char)'0' + value : (char)'A' + value;
etisserant@0: 	    s4o.print(str);
etisserant@0:             bit_mult = 0x10;
etisserant@0:             value = 0;
etisserant@0: 	  }
etisserant@0: 	}
etisserant@0:       }
etisserant@0: 
etisserant@0:       return NULL;
etisserant@0:     }
etisserant@0: 
etisserant@0:     void *print_list(list_c *list,
etisserant@0: 		     std::string pre_elem_str = "",
etisserant@0: 		     std::string inter_elem_str = "",
etisserant@0: 		     std::string post_elem_str = "",
etisserant@0: 		     visitor_c *visitor = NULL) {
etisserant@0:       if (visitor == NULL) visitor = this;
etisserant@0: 
etisserant@0:       if (list->n > 0) {
etisserant@0: //std::cout << "generate_cc_base_c::print_list(n = " << list->n << ")   000\n";
etisserant@0:         s4o.print(pre_elem_str);
etisserant@0:         list->elements[0]->accept(*visitor);
etisserant@0:       }
etisserant@0: 
etisserant@0:       for(int i = 1; i < list->n; i++) {
etisserant@0: //std::cout << "generate_cc_base_c::print_list   " << i << "\n";
etisserant@0:         s4o.print(inter_elem_str);
etisserant@0:         list->elements[i]->accept(*visitor);
etisserant@0:       }
etisserant@0: 
etisserant@0:       if (list->n > 0)
etisserant@0:         s4o.print(post_elem_str);
etisserant@0: 
etisserant@0:       return NULL;
etisserant@0:     }
etisserant@0: 
etisserant@0: 
etisserant@0:     void *print_binary_expression(symbol_c *l_exp,
etisserant@0: 				  symbol_c *r_exp,
etisserant@0: 				  const char *operation) {
etisserant@0:       s4o.print("(");
etisserant@0:       l_exp->accept(*this);
etisserant@0:       s4o.print(operation);
etisserant@0:       r_exp->accept(*this);
etisserant@0:       s4o.print(")");
etisserant@0:       return NULL;
etisserant@0:     }
etisserant@0: 
etisserant@0: 
etisserant@0:     void *print_unary_expression(symbol_c *exp,
etisserant@0: 				 const char *operation) {
etisserant@0:       s4o.print(operation);
etisserant@0:       s4o.print("(");
etisserant@0:       exp->accept(*this);
etisserant@0:       s4o.print(")");
etisserant@0:       return NULL;
etisserant@0:     }
etisserant@0: 
etisserant@0: 
etisserant@0: /***************************/
etisserant@0: /* 2.1.6 - Pragmas */
etisserant@0: /***************************/
etisserant@0:     /* Do not use print_token() as it will change everything into uppercase */
etisserant@0:     void *visit(pragma_c *symbol) {return s4o.print(symbol->value);}
etisserant@0: 
etisserant@0: 
etisserant@0: /***************************/
etisserant@0: /* B 0 - Programming Model */
etisserant@0: /***************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: /*************************/
etisserant@0: /* B.1 - Common elements */
etisserant@0: /*************************/
etisserant@0: /*******************************************/
etisserant@0: /* B 1.1 - Letters, digits and identifiers */
etisserant@0: /*******************************************/
etisserant@0:     void *visit(identifier_c *symbol) {return print_token(symbol);}
etisserant@0: 
etisserant@0: /*********************/
etisserant@0: /* B 1.2 - Constants */
etisserant@0: /*********************/
etisserant@0:   /* originally empty... */
etisserant@0: 
etisserant@0: /******************************/
etisserant@0: /* B 1.2.1 - Numeric Literals */
etisserant@0: /******************************/
etisserant@0:     void *visit(real_c *symbol) {return print_striped_token(symbol);}
etisserant@0:     void *visit(integer_c *symbol) {return print_striped_token(symbol);}
etisserant@0:     void *visit(binary_integer_c *symbol) {return print_striped_binary_token(symbol, 2);}
etisserant@0:     void *visit(octal_integer_c *symbol) {s4o.print("0"); return print_striped_token(symbol, 2);}
etisserant@0:     void *visit(hex_integer_c *symbol) {s4o.print("0x"); return print_striped_token(symbol, 3);}
etisserant@0: 
etisserant@0:     void *visit(numeric_literal_c *symbol) {return print_literal(symbol->type, symbol->value);}
etisserant@0:     void *visit(integer_literal_c *symbol) {return print_literal(symbol->type, symbol->value);}
etisserant@0:     void *visit(real_literal_c *symbol) {return print_literal(symbol->type, symbol->value);}
etisserant@0:     void *visit(bit_string_literal_c *symbol) {return print_literal(symbol->type, symbol->value);}
etisserant@0:     void *visit(boolean_literal_c *symbol) {return print_literal(symbol->type, symbol->value);}
etisserant@0: 
etisserant@0:     /* helper class for boolean_literal_c */
etisserant@0:     void *visit(boolean_true_c *symbol) {s4o.print("TRUE"); return NULL;}
etisserant@0:     void *visit(boolean_false_c *symbol) {s4o.print("FALSE"); return NULL;}
etisserant@0: 
etisserant@0: /*******************************/
etisserant@0: /* B.1.2.2   Character Strings */
etisserant@0: /*******************************/
etisserant@0:     void *visit(double_byte_character_string_c *symbol) {
etisserant@0:       // TO DO ...
etisserant@0:       ERROR;
etisserant@0:       return print_token(symbol);
etisserant@0:     }
etisserant@0: 
etisserant@0:     void *visit(single_byte_character_string_c *symbol) {
etisserant@0:       std::string str = "";
etisserant@0: 
etisserant@0:       str += '"';
etisserant@0:       /* we ignore the first and last bytes, they will be the character ' */
etisserant@0:       for (unsigned int i = 1; i < strlen(symbol->value) - 1; i++) {
etisserant@0:         char c = symbol->value[i];
etisserant@0:         if ((c == '\\') || (c == '"'))
etisserant@0:           {str += '\\'; str += c; continue;}
etisserant@0:         if (c != '$')
etisserant@0:           {str += c; continue;}
etisserant@0:         /* this should be safe, since the code has passed the syntax parser!! */
etisserant@0:         c = symbol->value[++i];
etisserant@0:         switch (c) {
etisserant@0:           case '$':
etisserant@0:           case '\'':
etisserant@0:             {str += c; continue;}
etisserant@0:           case 'L':
etisserant@0:           case 'l':
etisserant@0:             {str += "\x0A"; /* LF */; continue;}
etisserant@0:           case 'N':
etisserant@0:           case 'n':
etisserant@0:             {str += "\\x0A"; /* NL */; continue;}
etisserant@0:           case 'P':
etisserant@0:           case 'p':
etisserant@0:             {str += "\\f"; /* FF */; continue;}
etisserant@0:           case 'R':
etisserant@0:           case 'r':
etisserant@0:             {str += "\\r"; /* CR */; continue;}
etisserant@0:           case 'T':
etisserant@0:           case 't':
etisserant@0:             {str += "\\t"; /* tab */; continue;}
etisserant@0:           default: {
etisserant@0:             if (isxdigit(c)) {
etisserant@0:               /* this should be safe, since the code has passed the syntax parser!! */
etisserant@0: 	      char c2 = symbol->value[++i];
etisserant@0: 	      if (isxdigit(c2)) {
etisserant@0: 	        str += '\\'; str += 'x'; str += c; str += c2;
etisserant@0: 	        continue;
etisserant@0: 	      }
etisserant@0: 	    }
etisserant@0:           }
etisserant@0:           /* otherwise we have an invalid string!! */
etisserant@0:           /* This should not have got through the syntax parser! */
etisserant@0:           ERROR;
etisserant@0:         } /* switch() */
etisserant@0:       } /* for() */
etisserant@0: 
etisserant@0:       str += '"';
etisserant@0: 
etisserant@0:       s4o.print(str);
etisserant@0:       return NULL;
etisserant@0:     }
etisserant@0: 
etisserant@0: 
etisserant@0: /***************************/
etisserant@0: /* B 1.2.3 - Time Literals */
etisserant@0: /***************************/
etisserant@0: 
etisserant@0: /************************/
etisserant@0: /* B 1.2.3.1 - Duration */
etisserant@0: /************************/
etisserant@0: /* The following output is actually the parameters to the constructor of the TIME class! */
etisserant@0: 
etisserant@0: /* SYM_REF0(neg_time_c) */
etisserant@0: void *visit(neg_time_c *symbol) {s4o.print("-1"); /* negative time value */; return NULL;}
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(duration_c, neg, interval) */
etisserant@0: void *visit(duration_c *symbol) {
etisserant@0:   TRACE("duration_c");
etisserant@0:   s4o.print("TIME(");
etisserant@0:   if (NULL == symbol->neg)
etisserant@0:     s4o.print("1");  /* positive time value */
etisserant@0:   else
etisserant@0:     symbol->neg->accept(*this);  /* this will print '-1'   :-) */
etisserant@0: 
etisserant@0:   s4o.print(", ");
etisserant@0: 
etisserant@0:   symbol->interval->accept(*this);
etisserant@0:   s4o.print(")");
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_TOKEN(fixed_point_c) */
etisserant@0: void *visit(fixed_point_c *symbol) {return print_token(symbol);}
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(days_c, days, hours) */
etisserant@0: void *visit(days_c *symbol) {
etisserant@0:   TRACE("days_c");
etisserant@0:   if (NULL == symbol->hours)
etisserant@0:     s4o.print("0, 0, 0, 0");  /* milliseconds, seconds, minutes, hours */
etisserant@0:   else
etisserant@0:     symbol->hours->accept(*this);
etisserant@0: 
etisserant@0:   s4o.print(", ");
etisserant@0: 
etisserant@0:   symbol->days->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(hours_c, hours, minutes) */
etisserant@0: void *visit(hours_c *symbol) {
etisserant@0:   TRACE("hours_c");
etisserant@0:   if (NULL == symbol->minutes)
etisserant@0:     s4o.print("0, 0, 0");  /* milliseconds, seconds, minutes */
etisserant@0:   else
etisserant@0:     symbol->minutes->accept(*this);
etisserant@0: 
etisserant@0:   s4o.print(", ");
etisserant@0: 
etisserant@0:   symbol->hours->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(minutes_c, minutes, seconds) */
etisserant@0: void *visit(minutes_c *symbol) {
etisserant@0:   TRACE("minutes_c");
etisserant@0:   if (NULL == symbol->seconds)
etisserant@0:     s4o.print("0, 0");  /* milliseconds, seconds */
etisserant@0:   else
etisserant@0:     symbol->seconds->accept(*this);
etisserant@0: 
etisserant@0:   s4o.print(", ");
etisserant@0: 
etisserant@0:   symbol->minutes->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(seconds_c, seconds, milliseconds) */
etisserant@0: void *visit(seconds_c *symbol) {
etisserant@0:   TRACE("seconds_c");
etisserant@0:   if (NULL == symbol->milliseconds)
etisserant@0:     s4o.print("0");  /* milliseconds */
etisserant@0:   else
etisserant@0:     symbol->milliseconds->accept(*this);
etisserant@0: 
etisserant@0:   s4o.print(", ");
etisserant@0: 
etisserant@0:   symbol->seconds->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(milliseconds_c, milliseconds, unused) */
etisserant@0: void *visit(milliseconds_c *symbol) {
etisserant@0:   TRACE("milliseconds_c");
etisserant@0:   symbol->milliseconds->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: /************************************/
etisserant@0: /* B 1.2.3.2 - Time of day and Date */
etisserant@0: /************************************/
etisserant@0: 
etisserant@0: /* SYM_REF2(time_of_day_c, daytime, unused) */
etisserant@0: void *visit(time_of_day_c *symbol) {
etisserant@0:   TRACE("time_of_day_c");
etisserant@0:   s4o.print("TOD(");
etisserant@0:   symbol->daytime->accept(*this);
etisserant@0:   s4o.print(")");
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF4(daytime_c, day_hour, day_minute, day_second, unused) */
etisserant@0: void *visit(daytime_c *symbol) {
etisserant@0:   TRACE("daytime_c");
etisserant@0:   symbol->day_second->accept(*this);
etisserant@0:   s4o.print(", ");
etisserant@0:   symbol->day_minute->accept(*this);
etisserant@0:   s4o.print(", ");
etisserant@0:   symbol->day_hour->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(date_c, date_literal, unused) */
etisserant@0: void *visit(date_c *symbol) {
etisserant@0:   TRACE("date_c");
etisserant@0:   s4o.print("DATE(");
etisserant@0:   symbol->date_literal->accept(*this);
etisserant@0:   s4o.print(")");
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF4(date_literal_c, year, month, day, unused) */
etisserant@0: void *visit(date_literal_c *symbol) {
etisserant@0:   TRACE("date_literal_c");
etisserant@0:   symbol->day->accept(*this);
etisserant@0:   s4o.print(", ");
etisserant@0:   symbol->month->accept(*this);
etisserant@0:   s4o.print(", ");
etisserant@0:   symbol->year->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /* SYM_REF2(date_and_time_c, date_literal, daytime) */
etisserant@0: void *visit(date_and_time_c *symbol) {
etisserant@0:   TRACE("date_and_time_c");
etisserant@0:   s4o.print("DT(");
etisserant@0:   symbol->daytime->accept(*this);
etisserant@0:   s4o.print(", ");
etisserant@0:   symbol->date_literal->accept(*this);
etisserant@0:   s4o.print(")");
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: /**********************/
etisserant@0: /* B.1.3 - Data types */
etisserant@0: /**********************/
etisserant@0: /***********************************/
etisserant@0: /* B 1.3.1 - Elementary Data Types */
etisserant@0: /***********************************/
etisserant@0:     void *visit(time_type_name_c *symbol) {s4o.print("TIME"); return NULL;}
etisserant@0:     void *visit(bool_type_name_c *symbol) {s4o.print("BOOL"); return NULL;}
etisserant@0:     void *visit(sint_type_name_c *symbol) {s4o.print("SINT"); return NULL;}
etisserant@0:     void *visit(int_type_name_c *symbol) {s4o.print("INT"); return NULL;}
etisserant@0:     void *visit(dint_type_name_c *symbol) {s4o.print("DINT"); return NULL;}
etisserant@0:     void *visit(lint_type_name_c *symbol) {s4o.print("LINT"); return NULL;}
etisserant@0:     void *visit(usint_type_name_c *symbol) {s4o.print("USINT"); return NULL;}
etisserant@0:     void *visit(uint_type_name_c *symbol) {s4o.print("UINT"); return NULL;}
etisserant@0:     void *visit(udint_type_name_c *symbol) {s4o.print("UDINT"); return NULL;}
etisserant@0:     void *visit(ulint_type_name_c *symbol) {s4o.print("ULINT"); return NULL;}
etisserant@0:     void *visit(real_type_name_c *symbol) {s4o.print("REAL"); return NULL;}
etisserant@0:     void *visit(lreal_type_name_c *symbol) {s4o.print("LREAL"); return NULL;}
etisserant@0:     void *visit(date_type_name_c *symbol) {s4o.print("DATE"); return NULL;}
etisserant@0:     void *visit(tod_type_name_c *symbol) {s4o.print("TOD"); return NULL;}
etisserant@0:     void *visit(dt_type_name_c *symbol) {s4o.print("DT"); return NULL;}
etisserant@0:     void *visit(byte_type_name_c *symbol) {s4o.print("BYTE"); return NULL;}
etisserant@0:     void *visit(word_type_name_c *symbol) {s4o.print("WORD"); return NULL;}
etisserant@0:     void *visit(lword_type_name_c *symbol) {s4o.print("LWORD"); return NULL;}
etisserant@0:     void *visit(dword_type_name_c *symbol) {s4o.print("DWORD"); return NULL;}
etisserant@0:     void *visit(string_type_name_c *symbol) {s4o.print("STRING"); return NULL;}
etisserant@0:     void *visit(wstring_type_name_c *symbol) {s4o.print("WSTRING"); return NULL;}
etisserant@0: 
etisserant@0: /********************************/
etisserant@0: /* B.1.3.2 - Generic data types */
etisserant@0: /********************************/
etisserant@0:   /* originally empty... */
etisserant@0: 
etisserant@0: /********************************/
etisserant@0: /* B 1.3.3 - Derived data types */
etisserant@0: /********************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /*********************/
etisserant@0: /* B 1.4 - Variables */
etisserant@0: /*********************/
etisserant@0: void *visit(symbolic_variable_c *symbol) {
etisserant@0:   TRACE("symbolic_variable_c");
etisserant@0:   this->print_variable_prefix();
etisserant@0:   symbol->var_name->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: /********************************************/
etisserant@0: /* B.1.4.1   Directly Represented Variables */
etisserant@0: /********************************************/
etisserant@0: void *visit(direct_variable_c *symbol) {
etisserant@0:   TRACE("direct_variable_c");
etisserant@0:   /* Do not use print_token() as it will change everything into uppercase */
etisserant@0:   return s4o.print(symbol->value);
etisserant@0: }
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: /*************************************/
etisserant@0: /* B.1.4.2   Multi-element Variables */
etisserant@0: /*************************************/
etisserant@0: #if 0
etisserant@0: /*  subscripted_variable '[' subscript_list ']' */
etisserant@0: SYM_REF2(array_variable_c, subscripted_variable, subscript_list)
etisserant@0: 
etisserant@0: /* subscript_list ',' subscript */
etisserant@0: SYM_LIST(subscript_list_c)
etisserant@0: #endif
etisserant@0: 
etisserant@0: /*  record_variable '.' field_selector */
etisserant@0: /*  WARNING: input and/or output variables of function blocks
etisserant@0:  *           may be accessed as fields of a structured variable!
etisserant@0:  *           Code handling a structured_variable_c must take
etisserant@0:  *           this into account!
etisserant@0:  */
etisserant@0: // SYM_REF2(structured_variable_c, record_variable, field_selector)
etisserant@0: void *visit(structured_variable_c *symbol) {
etisserant@0:   TRACE("structured_variable_c");
etisserant@0: 
etisserant@0:   symbol->record_variable->accept(*this);
etisserant@0:   s4o.print(".");
etisserant@0:   symbol->field_selector->accept(*this);
etisserant@0:   return NULL;
etisserant@0: }
etisserant@0: 
etisserant@0: /******************************************/
etisserant@0: /* B 1.4.3 - Declaration & Initialisation */
etisserant@0: /******************************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /**************************************/
etisserant@0: /* B.1.5 - Program organization units */
etisserant@0: /**************************************/
etisserant@0: /***********************/
etisserant@0: /* B 1.5.1 - Functions */
etisserant@0: /***********************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /*****************************/
etisserant@0: /* B 1.5.2 - Function Blocks */
etisserant@0: /*****************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /**********************/
etisserant@0: /* B 1.5.3 - Programs */
etisserant@0: /**********************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /*********************************************/
etisserant@0: /* B.1.6  Sequential function chart elements */
etisserant@0: /*********************************************/
etisserant@0: 
etisserant@0: /********************************/
etisserant@0: /* B 1.7 Configuration elements */
etisserant@0: /********************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /****************************************/
etisserant@0: /* B.2 - Language IL (Instruction List) */
etisserant@0: /****************************************/
etisserant@0: /***********************************/
etisserant@0: /* B 2.1 Instructions and Operands */
etisserant@0: /***********************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /*******************/
etisserant@0: /* B 2.2 Operators */
etisserant@0: /*******************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: 
etisserant@0: /***************************************/
etisserant@0: /* B.3 - Language ST (Structured Text) */
etisserant@0: /***************************************/
etisserant@0: /***********************/
etisserant@0: /* B 3.1 - Expressions */
etisserant@0: /***********************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /********************/
etisserant@0: /* B 3.2 Statements */
etisserant@0: /********************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /*********************************/
etisserant@0: /* B 3.2.1 Assignment Statements */
etisserant@0: /*********************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /*****************************************/
etisserant@0: /* B 3.2.2 Subprogram Control Statements */
etisserant@0: /*****************************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /********************************/
etisserant@0: /* B 3.2.3 Selection Statements */
etisserant@0: /********************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: /********************************/
etisserant@0: /* B 3.2.4 Iteration Statements */
etisserant@0: /********************************/
etisserant@0:   /* leave for derived classes... */
etisserant@0: 
etisserant@0: }; /* class generate_cc_basic_c */
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: 
etisserant@0: