msousa@417: /*
msousa@417:  *  matiec - a compiler for the programming languages defined in IEC 61131-3
msousa@417:  *
msousa@417:  *  Copyright (C) 2009-2011  Mario de Sousa (msousa@fe.up.pt)
msousa@417:  *  Copyright (C) 20011-2012 Manuele Conti (manuele.conti@sirius-es.it)
msousa@417:  *  Copyright (C) 20011-2012 Matteo Facchinetti (matteo.facchinetti@sirius-es.it)
msousa@417:  *
msousa@417:  *  This program is free software: you can redistribute it and/or modify
msousa@417:  *  it under the terms of the GNU General Public License as published by
msousa@417:  *  the Free Software Foundation, either version 3 of the License, or
msousa@417:  *  (at your option) any later version.
msousa@417:  *
msousa@417:  *  This program is distributed in the hope that it will be useful,
msousa@417:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
msousa@417:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
msousa@417:  *  GNU General Public License for more details.
msousa@417:  *
msousa@417:  *  You should have received a copy of the GNU General Public License
msousa@417:  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
msousa@417:  *
msousa@417:  *
msousa@417:  * This code is made available on the understanding that it will not be
msousa@417:  * used in safety-critical situations without a full and competent review.
msousa@417:  */
msousa@417: 
msousa@417: /*
msousa@417:  * An IEC 61131-3 compiler.
msousa@417:  *
msousa@417:  * Based on the
msousa@417:  * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
msousa@417:  *
msousa@417:  */
msousa@417: 
msousa@417: 
msousa@417: /*
msousa@417:  *  Fill candidate list of data types for all symbols
msousa@417:  */
msousa@417: 
msousa@417: #include "print_datatypes_error.hh"
msousa@417: #include <typeinfo>
msousa@417: #include <list>
msousa@417: #include <string>
msousa@417: #include <string.h>
msousa@417: #include <strings.h>
msousa@417: 
msousa@417: 
msousa@427: 
msousa@427: /* A small helper class, to transform elementary data type to string.
msousa@427:  * this allows us to generate more relevant error messages...
msousa@427:  */
msousa@427: 
msousa@427: class elementary_type_c: public null_visitor_c {
msousa@427:   elementary_type_c(void) {};
msousa@427:   ~elementary_type_c(void) {};
msousa@427:   
msousa@427:   private:
msousa@427:     /* singleton class! */
msousa@427:     static elementary_type_c *singleton;
msousa@427:     
msousa@427:   public:
msousa@427:     static const char * to_string(symbol_c *symbol) {
msousa@427:       if (NULL == singleton)    singleton = new elementary_type_c;
msousa@427:       if (NULL == singleton)    ERROR;
msousa@427:       const char *res           = (const char *)symbol->accept(*singleton);
msousa@427:       if (NULL == res)          ERROR;
msousa@427:       return res;
msousa@427:     }
msousa@427:     
msousa@427:     /***********************************/
msousa@427:     /* B 1.3.1 - Elementary Data Types */
msousa@427:     /***********************************/
msousa@427:     void *visit(time_type_name_c *symbol)        {return (void *)"TIME";        };
msousa@427:     void *visit(bool_type_name_c *symbol)        {return (void *)"BOOL";        };
msousa@427:     void *visit(sint_type_name_c *symbol)        {return (void *)"SINT";        };
msousa@427:     void *visit(int_type_name_c *symbol)         {return (void *)"INT";         };
msousa@427:     void *visit(dint_type_name_c *symbol)        {return (void *)"DINT";        };
msousa@427:     void *visit(lint_type_name_c *symbol)        {return (void *)"LINT";        };
msousa@427:     void *visit(usint_type_name_c *symbol)       {return (void *)"USINT";       };
msousa@427:     void *visit(uint_type_name_c *symbol)        {return (void *)"UINT";        };
msousa@427:     void *visit(udint_type_name_c *symbol)       {return (void *)"UDINT";       };
msousa@427:     void *visit(ulint_type_name_c *symbol)       {return (void *)"ULINT";       };
msousa@427:     void *visit(real_type_name_c *symbol)        {return (void *)"REAL";        };
msousa@427:     void *visit(lreal_type_name_c *symbol)       {return (void *)"LREAL";       };
msousa@427:     void *visit(date_type_name_c *symbol)        {return (void *)"DATE";        };
msousa@427:     void *visit(tod_type_name_c *symbol)         {return (void *)"TOD";         };
msousa@427:     void *visit(dt_type_name_c *symbol)          {return (void *)"DT";          };
msousa@427:     void *visit(byte_type_name_c *symbol)        {return (void *)"BYTE";        };
msousa@427:     void *visit(word_type_name_c *symbol)        {return (void *)"WORD";        };
msousa@427:     void *visit(lword_type_name_c *symbol)       {return (void *)"LWORD";       };
msousa@427:     void *visit(dword_type_name_c *symbol)       {return (void *)"DWORD";       };
msousa@427:     void *visit(string_type_name_c *symbol)      {return (void *)"STRING";      };
msousa@427:     void *visit(wstring_type_name_c *symbol)     {return (void *)"WSTRING";     };
msousa@427:     
msousa@427:     void *visit(safetime_type_name_c *symbol)    {return (void *)"SAFETIME";    };
msousa@427:     void *visit(safebool_type_name_c *symbol)    {return (void *)"SAFEBOOL";    };
msousa@427:     void *visit(safesint_type_name_c *symbol)    {return (void *)"SAFESINT";    };
msousa@427:     void *visit(safeint_type_name_c *symbol)     {return (void *)"SAFEINT";     };
msousa@427:     void *visit(safedint_type_name_c *symbol)    {return (void *)"SAFEDINT";    };
msousa@427:     void *visit(safelint_type_name_c *symbol)    {return (void *)"SAFELINT";    };
msousa@427:     void *visit(safeusint_type_name_c *symbol)   {return (void *)"SAFEUSINT";   };
msousa@427:     void *visit(safeuint_type_name_c *symbol)    {return (void *)"SAFEUINT";    };
msousa@427:     void *visit(safeudint_type_name_c *symbol)   {return (void *)"SAFEUDINT";   };
msousa@427:     void *visit(safeulint_type_name_c *symbol)   {return (void *)"SAFEULINT";   };
msousa@427:     void *visit(safereal_type_name_c *symbol)    {return (void *)"SAFEREAL";    };
msousa@427:     void *visit(safelreal_type_name_c *symbol)   {return (void *)"SAFELREAL";   };
msousa@427:     void *visit(safedate_type_name_c *symbol)    {return (void *)"SAFEDATE";    };
msousa@427:     void *visit(safetod_type_name_c *symbol)     {return (void *)"SAFETOD";     };
msousa@427:     void *visit(safedt_type_name_c *symbol)      {return (void *)"SAFEDT";      };
msousa@427:     void *visit(safebyte_type_name_c *symbol)    {return (void *)"SAFEBYTE";    };
msousa@427:     void *visit(safeword_type_name_c *symbol)    {return (void *)"SAFEWORD";    };
msousa@427:     void *visit(safelword_type_name_c *symbol)   {return (void *)"SAFELWORD";   };
msousa@427:     void *visit(safedword_type_name_c *symbol)   {return (void *)"SAFEDWORD";   };
msousa@427:     void *visit(safestring_type_name_c *symbol)  {return (void *)"SAFESTRING";  };
msousa@427:     void *visit(safewstring_type_name_c *symbol) {return (void *)"SAFEWSTRING"; };
msousa@427: };
msousa@427: 
msousa@427: 
msousa@427: elementary_type_c *elementary_type_c::singleton = NULL;
msousa@427: 
msousa@427: 
msousa@427: 
msousa@427: 
msousa@427: 
msousa@417: #define FIRST_(symbol1, symbol2) (((symbol1)->first_order < (symbol2)->first_order)   ? (symbol1) : (symbol2))
msousa@417: #define  LAST_(symbol1, symbol2) (((symbol1)->last_order  > (symbol2)->last_order)    ? (symbol1) : (symbol2))
msousa@417: 
msousa@427: #define STAGE3_ERROR(error_level, symbol1, symbol2, ...) {                                                                  \
msousa@427:   if (current_display_error_level >= error_level) {                                                                         \
msousa@427:     fprintf(stderr, "%s:%d-%d..%d-%d: error : ",                                                                            \
msousa@427:             FIRST_(symbol1,symbol2)->first_file, FIRST_(symbol1,symbol2)->first_line, FIRST_(symbol1,symbol2)->first_column,\
msousa@427:                                                  LAST_(symbol1,symbol2) ->last_line,  LAST_(symbol1,symbol2) ->last_column);\
msousa@427:     fprintf(stderr, __VA_ARGS__);                                                                                           \
msousa@427:     fprintf(stderr, "\n");                                                                                                  \
msousa@427:     il_error = true;                                                                                                        \
msousa@427:     error_found = true;                                                                                                     \
msousa@427:   }                                                                                                                         \
msousa@427: }  
msousa@417: 
msousa@417: 
msousa@417: /* set to 1 to see debug info during execution */
msousa@417: static int debug = 0;
msousa@417: 
msousa@417: print_datatypes_error_c::print_datatypes_error_c(symbol_c *ignore) {
msousa@417: 	error_found = false;
msousa@427: 	current_display_error_level = error_level_default;
msousa@417: }
msousa@417: 
msousa@417: print_datatypes_error_c::~print_datatypes_error_c(void) {
msousa@417: }
msousa@417: 
msousa@417: int print_datatypes_error_c::get_error_found() {
msousa@417: 	return error_found;
msousa@417: }
msousa@417: 
msousa@417: /* a helper function... */
msousa@417: symbol_c *print_datatypes_error_c::base_type(symbol_c *symbol) {
msousa@417: 	/* NOTE: symbol == NULL is valid. It will occur when, for e.g., an undefined/undeclared symbolic_variable is used
msousa@417: 	 *       in the code.
msousa@417: 	 */
msousa@417: 	if (symbol == NULL) return NULL;
msousa@417: 	return (symbol_c *)symbol->accept(search_base_type);
msousa@417: }
msousa@417: 
msousa@417: /*********************/
msousa@417: /* B 1.2 - Constants */
msousa@417: /*********************/
msousa@417: /******************************/
msousa@417: /* B 1.2.1 - Numeric Literals */
msousa@417: /******************************/
msousa@417: void *print_datatypes_error_c::visit(real_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_REAL data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_REAL data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(integer_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(neg_real_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_REAL data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_REAL data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(neg_integer_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(binary_integer_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(octal_integer_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(hex_integer_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for ANY_INT data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(integer_literal_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for %s data type.", elementary_type_c::to_string(symbol->type));
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_INT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(real_literal_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for %s data type.", elementary_type_c::to_string(symbol->type));
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_REAL data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(bit_string_literal_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for %s data type.", elementary_type_c::to_string(symbol->type));
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_BIT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(boolean_literal_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Value is not valid for %s data type.", elementary_type_c::to_string(symbol->type));
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_BOOL data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(boolean_true_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Value is not valid for ANY_BOOL data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_BOOL data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(boolean_false_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Value is not valid for ANY_BOOL data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "ANY_BOOL data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /*******************************/
msousa@417: /* B.1.2.2   Character Strings */
msousa@417: /*******************************/
msousa@417: void *print_datatypes_error_c::visit(double_byte_character_string_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for WSTRING data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "WSTRING data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(single_byte_character_string_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for STRING data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "STRING data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /***************************/
msousa@417: /* B 1.2.3 - Time Literals */
msousa@417: /***************************/
msousa@417: /************************/
msousa@417: /* B 1.2.3.1 - Duration */
msousa@417: /************************/
msousa@417: void *print_datatypes_error_c::visit(duration_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for TIME data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "TIME data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /************************************/
msousa@417: /* B 1.2.3.2 - Time of day and Date */
msousa@417: /************************************/
msousa@417: void *print_datatypes_error_c::visit(time_of_day_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for TOD data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "TOD data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(date_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for DATE data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "DATE data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(date_and_time_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid syntax for DT data type.");
msousa@427: 	} else if (NULL == symbol->datatype) {
msousa@427: 		STAGE3_ERROR(4, symbol, symbol, "DT data type not valid in this location.");
msousa@417: 	}
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /**********************/
msousa@417: /* B 1.3 - Data types */
msousa@417: /**********************/
msousa@417: /********************************/
msousa@417: /* B 1.3.3 - Derived data types */
msousa@417: /********************************/
msousa@417: void *print_datatypes_error_c::visit(data_type_declaration_c *symbol) {
msousa@417: 	// TODO !!!
msousa@417: 	/* for the moment we must return NULL so semantic analysis of remaining code is not interrupted! */
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(enumerated_value_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0)
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Ambiguous enumerate value or Variable not declared in this scope.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: /*********************/
msousa@417: /* B 1.4 - Variables */
msousa@417: /*********************/
msousa@417: void *print_datatypes_error_c::visit(symbolic_variable_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0)
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Variable not declared in this scope.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /********************************************/
msousa@417: /* B 1.4.1 - Directly Represented Variables */
msousa@417: /********************************************/
msousa@417: void *print_datatypes_error_c::visit(direct_variable_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0)
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Numerical value exceeds range for located variable data type.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /*************************************/
msousa@417: /* B 1.4.2 - Multi-element variables */
msousa@417: /*************************************/
msousa@417: /*  subscripted_variable '[' subscript_list ']' */
msousa@417: // SYM_REF2(array_variable_c, subscripted_variable, subscript_list)
msousa@417: void *print_datatypes_error_c::visit(array_variable_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0)
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Array variable not declared in this scope.");
msousa@417: 	
msousa@417: 	/* recursively call the subscript list to print any errors in the expressions used in the subscript...*/
msousa@417: 	symbol->subscript_list->accept(*this);
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /* subscript_list ',' subscript */
msousa@417: // SYM_LIST(subscript_list_c)
msousa@417: /* NOTE: we inherit from iterator visitor, so we do not need to implement this method... */
msousa@417: #if 0
msousa@417: void *print_datatypes_error_c::visit(subscript_list_c *symbol) {
msousa@417: }
msousa@417: #endif
msousa@417: 
msousa@417: 
msousa@417: /*  record_variable '.' field_selector */
msousa@417: /*  WARNING: input and/or output variables of function blocks
msousa@417:  *           may be accessed as fields of a structured variable!
msousa@417:  *           Code handling a structured_variable_c must take
msousa@417:  *           this into account!
msousa@417:  */
msousa@417: // SYM_REF2(structured_variable_c, record_variable, field_selector)
msousa@417: /* NOTE: We do not recursively determine the data types of each field_selector in fill_candidate_datatypes_c,
msousa@417:  * so it does not make sense to recursively visit all the field_selectors to print out error messages. 
msousa@417:  * 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!
msousa@417:  */
msousa@417: void *print_datatypes_error_c::visit(structured_variable_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() == 0)
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Structure variable not declared in this scope.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /************************************/
msousa@417: /* B 1.5 Program organization units */
msousa@417: /************************************/
msousa@417: /*********************/
msousa@417: /* B 1.5.1 Functions */
msousa@417: /*********************/
msousa@417: void *print_datatypes_error_c::visit(function_declaration_c *symbol) {
msousa@417: 	search_varfb_instance_type = new search_varfb_instance_type_c(symbol);
msousa@417: 	/* We do not check for data type errors in variable declarations, Skip this for now... */
msousa@417: // 	symbol->var_declarations_list->accept(*this);
msousa@417: 	if (debug) printf("Print error data types list in body of function %s\n", ((token_c *)(symbol->derived_function_name))->value);
msousa@417: 	il_parenthesis_level = 0;
msousa@417: 	il_error = false;
msousa@417: 	prev_il_instruction = NULL;
msousa@417: 	symbol->function_body->accept(*this);
msousa@417: 	prev_il_instruction = NULL;
msousa@417: 	delete search_varfb_instance_type;
msousa@417: 	search_varfb_instance_type = NULL;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /***************************/
msousa@417: /* B 1.5.2 Function blocks */
msousa@417: /***************************/
msousa@417: void *print_datatypes_error_c::visit(function_block_declaration_c *symbol) {
msousa@417: 	search_varfb_instance_type = new search_varfb_instance_type_c(symbol);
msousa@417: 	/* We do not check for data type errors in variable declarations, Skip this for now... */
msousa@417: // 	symbol->var_declarations->accept(*this);
msousa@417: 	if (debug) printf("Print error data types list in body of FB %s\n", ((token_c *)(symbol->fblock_name))->value);
msousa@417: 	il_parenthesis_level = 0;
msousa@417: 	il_error = false;
msousa@417: 	prev_il_instruction = NULL;
msousa@417: 	symbol->fblock_body->accept(*this);
msousa@417: 	prev_il_instruction = NULL;
msousa@417: 	delete search_varfb_instance_type;
msousa@417: 	search_varfb_instance_type = NULL;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /**********************/
msousa@417: /* B 1.5.3 - Programs */
msousa@417: /**********************/
msousa@417: void *print_datatypes_error_c::visit(program_declaration_c *symbol) {
msousa@417: 	search_varfb_instance_type = new search_varfb_instance_type_c(symbol);
msousa@417: 	/* We do not check for data type errors in variable declarations, Skip this for now... */
msousa@417: // 	symbol->var_declarations->accept(*this);
msousa@417: 	if (debug) printf("Print error data types list in body of program %s\n", ((token_c *)(symbol->program_type_name))->value);
msousa@417: 	il_parenthesis_level = 0;
msousa@417: 	il_error = false;
msousa@417: 	prev_il_instruction = NULL;
msousa@417: 	symbol->function_block_body->accept(*this);
msousa@417: 	prev_il_instruction = NULL;
msousa@417: 	delete search_varfb_instance_type;
msousa@417: 	search_varfb_instance_type = NULL;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: 
msousa@417: /********************************/
msousa@417: /* B 1.7 Configuration elements */
msousa@417: /********************************/
msousa@417: void *print_datatypes_error_c::visit(configuration_declaration_c *symbol) {
msousa@417: #if 0
msousa@417: 	// TODO !!!
msousa@417: 	/* for the moment we must return NULL so semantic analysis of remaining code is not interrupted! */
msousa@417: #endif
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /****************************************/
msousa@417: /* B.2 - Language IL (Instruction List) */
msousa@417: /****************************************/
msousa@417: /***********************************/
msousa@417: /* B 2.1 Instructions and Operands */
msousa@417: /***********************************/
msousa@417: // void *visit(instruction_list_c *symbol);
msousa@417: void *print_datatypes_error_c::visit(il_simple_operation_c *symbol) {
msousa@417: 	il_operand = symbol->il_operand;
msousa@417: 	if (NULL != symbol->il_operand) {
msousa@417: 		symbol->il_operand->accept(*this);
msousa@417: 	}
msousa@417: 	/* recursive call to see whether data types are compatible */
msousa@417: 	symbol->il_simple_operator->accept(*this);
msousa@417: 	il_operand = NULL;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(il_function_call_c *symbol) {
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(il_expression_c *symbol) {
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(il_fb_call_c *symbol) {
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(il_formal_funct_call_c *symbol) {
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: /*
msousa@417:     void *visit(il_operand_list_c *symbol);
msousa@417:     void *visit(simple_instr_list_c *symbol);
msousa@417:     void *visit(il_param_list_c *symbol);
msousa@417:     void *visit(il_param_assignment_c *symbol);
msousa@417:     void *visit(il_param_out_assignment_c *symbol);
msousa@417:  */
msousa@417: 
msousa@417: /*******************/
msousa@417: /* B 2.2 Operators */
msousa@417: /*******************/
msousa@417: void *print_datatypes_error_c::visit(LD_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(LDN_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'LDN' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(ST_operator_c *symbol) {
msousa@417: 	/* MANU:
msousa@417: 	 * if prev_instruction is NULL we can print a message error or warning error like:
msousa@417: 	 * we can't use a ST like first instruction.
msousa@417: 	 * What do you think?
msousa@417: 	 */
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'ST' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(STN_operator_c *symbol) {
msousa@417: 	/* MANU:
msousa@417: 	 * if prev_instruction is NULL we can print a message error or warning error like:
msousa@417: 	 * we can't use a ST like first instruction.
msousa@417: 	 * What do you think?
msousa@417: 	 */
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'STN' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(NOT_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(S_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'S' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(R_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'R' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(S1_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'S1' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(R1_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'R1' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(CLK_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(CU_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(CD_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(PV_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(IN_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(PT_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(AND_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'AND' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(OR_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'OR' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(XOR_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'XOR' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(ANDN_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'ANDN' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(ORN_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'ORN' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(XORN_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'ORN' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(ADD_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'ADD' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(SUB_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'SUB' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(MUL_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'MUL' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(DIV_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'DIV' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(MOD_operator_c *symbol) {
msousa@417: 	il_operand->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(il_operand->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'MOD' operator.");
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(GT_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(GE_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(EQ_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(LT_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(LE_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(NE_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(CAL_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(CALC_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(CALCN_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(RET_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(RETC_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(RETCN_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(JMP_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(JMPC_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(JMPCN_operator_c *symbol) {
msousa@417: 	prev_il_instruction = symbol;
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /* Symbol class handled together with function call checks */
msousa@417: // void *visit(il_assign_operator_c *symbol, variable_name);
msousa@417: /* Symbol class handled together with function call checks */
msousa@417: // void *visit(il_assign_operator_c *symbol, option, variable_name);
msousa@417: 
msousa@417: /***************************************/
msousa@417: /* B.3 - Language ST (Structured Text) */
msousa@417: /***************************************/
msousa@417: /***********************/
msousa@417: /* B 3.1 - Expressions */
msousa@417: /***********************/
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(or_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'OR' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(xor_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'XOR' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(and_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'AND' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(equ_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '=' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(notequ_expression_c *symbol)  {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '<>' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(lt_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '<' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(gt_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '>' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(le_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '<=' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(ge_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '>=' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(add_expression_c *symbol) {
msousa@426: 	symbol->l_exp->accept(*this);
msousa@426: 	symbol->r_exp->accept(*this);
msousa@426: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@426: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@426: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '+' expression.");
msousa@417: 
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(sub_expression_c *symbol) {
msousa@426: 	symbol->l_exp->accept(*this);
msousa@426: 	symbol->r_exp->accept(*this);
msousa@426: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@426: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@426: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 			STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '-' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(mul_expression_c *symbol) {
msousa@426: 	symbol->l_exp->accept(*this);
msousa@426: 	symbol->r_exp->accept(*this);
msousa@426: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@426: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@426: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '*' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(div_expression_c *symbol) {
msousa@426: 	symbol->l_exp->accept(*this);
msousa@426: 	symbol->r_exp->accept(*this);
msousa@426: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@426: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@426: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '/' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(mod_expression_c *symbol) {
msousa@426: 	symbol->l_exp->accept(*this);
msousa@426: 	symbol->r_exp->accept(*this);
msousa@426: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@426: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@426: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for 'MOD' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(power_expression_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0) 		&&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Data type mismatch for '**' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(neg_expression_c *symbol) {
msousa@417: 	symbol->exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0)      &&
msousa@417: 		(symbol->exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'NEG' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(not_expression_c *symbol) {
msousa@417: 	symbol->exp->accept(*this);
msousa@417: 	if ((symbol->candidate_datatypes.size() == 0)      &&
msousa@417: 		(symbol->exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'NOT' expression.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(function_invocation_c *symbol) {
msousa@426: 	symbol_c *param_value, *param_name;
msousa@426: 	function_call_param_iterator_c fcp_iterator(symbol);
msousa@426: 	bool function_invocation_error = false;
msousa@426: 
msousa@426: 	if ((NULL != symbol->formal_param_list) && (NULL != symbol->nonformal_param_list)) 
msousa@426: 		ERROR;
msousa@426: 
msousa@426: 	if (NULL != symbol->formal_param_list) {
msousa@426: 		symbol->formal_param_list->accept(*this);
msousa@426: 		while ((param_name = fcp_iterator.next_f()) != NULL) {
msousa@426: 			param_value = fcp_iterator.get_current_value();
msousa@426: 			if (NULL == param_value->datatype) {
msousa@426: 				function_invocation_error = true;
msousa@427: 				STAGE3_ERROR(0, symbol, symbol, "Invalid parameter '%s' in function invocation: %s", ((identifier_c *)param_name)->value, ((identifier_c *)symbol->function_name)->value);
msousa@426: 			}
msousa@426: 		}
msousa@426: 	}
msousa@426: 	if (NULL != symbol->nonformal_param_list) {
msousa@426: 		symbol->nonformal_param_list->accept(*this);
msousa@427: 		for (int i = 1; (param_value = fcp_iterator.next_nf()) != NULL; i++) {
msousa@426: 			if (NULL == param_value->datatype) {
msousa@426: 				function_invocation_error = true;
msousa@427: 				STAGE3_ERROR(0, symbol, symbol, "Invalid parameter (position %d) in function invocation: %s", i, ((identifier_c *)symbol->function_name)->value);
msousa@426: 			}
msousa@426: 		}
msousa@426: 	}
msousa@426: 
msousa@426: 	if (function_invocation_error) {
msousa@425: 		/* No compatible function exists */
msousa@427: 		STAGE3_ERROR(2, symbol, symbol, "Invalid parameters in function invocation: %s", ((identifier_c *)symbol->function_name)->value);
msousa@425: 	} 
msousa@425: 
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /********************/
msousa@417: /* B 3.2 Statements */
msousa@417: /********************/
msousa@417: 
msousa@417: /*********************************/
msousa@417: /* B 3.2.1 Assignment Statements */
msousa@417: /*********************************/
msousa@417: void *print_datatypes_error_c::visit(assignment_statement_c *symbol) {
msousa@417: 	symbol->l_exp->accept(*this);
msousa@417: 	symbol->r_exp->accept(*this);
msousa@417: 	if ((NULL == symbol->l_exp->datatype) &&
msousa@417: 	    (NULL == symbol->r_exp->datatype) &&
msousa@417: 		(symbol->l_exp->candidate_datatypes.size() > 0)	&&
msousa@417: 		(symbol->r_exp->candidate_datatypes.size() > 0))
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data types for ':=' operation.");
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@425: 
msousa@425: /*****************************************/
msousa@425: /* B 3.2.2 Subprogram Control Statements */
msousa@425: /*****************************************/
msousa@425: /* fb_name '(' [param_assignment_list] ')' */
msousa@425: /*    formal_param_list -> may be NULL ! */
msousa@425: /* nonformal_param_list -> may be NULL ! */
msousa@425: /* NOTES:
msousa@425:  *    The parameter 'called_fb_declaration'... 
msousa@425:  *       ...is used to pass data between two passes of stage 3.
msousa@425:  *       (actually set in fill_candidate_datatypes_c, and used in narrow_candidate_datatypes_c and print_datatypes_error_c).
msousa@425:  *       This allows fill_candidate_datatypes_c to figure out whether it is a valid FB call,
msousa@425:  *       and let the other classes handle it aproproately.
msousa@425:  *       It could also be used in stage 4, if required.
msousa@425:  */
msousa@425: // SYM_REF3(fb_invocation_c, fb_name, formal_param_list, nonformal_param_list, symbol_c *called_fb_declaration;)
msousa@425: void *print_datatypes_error_c::visit(fb_invocation_c *symbol) {
msousa@426: 	symbol_c *param_value, *param_name;
msousa@426: 	function_call_param_iterator_c fcp_iterator(symbol);
msousa@426: 	bool function_invocation_error = false;
msousa@426: 
msousa@426: 	if ((NULL != symbol->formal_param_list) && (NULL != symbol->nonformal_param_list)) 
msousa@426: 		ERROR;
msousa@426: 
msousa@426: 	if (NULL != symbol->formal_param_list) {
msousa@426: 		symbol->formal_param_list->accept(*this);
msousa@426: 		while ((param_name = fcp_iterator.next_f()) != NULL) {
msousa@426: 			param_value = fcp_iterator.get_current_value();
msousa@426: 			if (NULL == param_value->datatype) {
msousa@426: 				function_invocation_error = true;
msousa@427: 				STAGE3_ERROR(0, symbol, symbol, "Invalid parameter '%s' in function invocation: %s", ((identifier_c *)param_name)->value, ((identifier_c *)symbol->fb_name)->value);
msousa@426: 			}
msousa@426: 		}
msousa@426: 	}
msousa@426: 	if (NULL != symbol->nonformal_param_list) {
msousa@426: 		symbol->nonformal_param_list->accept(*this);
msousa@427: 		for (int i = 1; (param_value = fcp_iterator.next_nf()) != NULL; i++) {
msousa@426: 			if (NULL == param_value->datatype) {
msousa@426: 				function_invocation_error = true;
msousa@427: 				STAGE3_ERROR(0, symbol, symbol, "Invalid parameter (position %d) in function invocation: %s", i, ((identifier_c *)symbol->fb_name)->value);
msousa@426: 			}
msousa@426: 		}
msousa@426: 	}
msousa@426: 
msousa@426: 	if (function_invocation_error) {
msousa@425: 		/* Invalid parameters for FB call! */
msousa@427: 		STAGE3_ERROR(2, symbol, symbol, "Invalid parameters in FB invocation: %s", ((identifier_c *)symbol->fb_name)->value);
msousa@425: 	} 
msousa@425: 
msousa@425: 	return NULL;
msousa@425: }
msousa@425: 
msousa@425: 
msousa@417: /********************************/
msousa@417: /* B 3.2.3 Selection Statements */
msousa@417: /********************************/
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(if_statement_c *symbol) {
msousa@417: 	symbol->expression->accept(*this);
msousa@417: 	if ((NULL == symbol->expression->datatype) &&
msousa@417: 		(symbol->expression->candidate_datatypes.size() > 0)) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'IF' condition.");
msousa@417: 	}
msousa@417: 	if (NULL != symbol->statement_list)
msousa@417: 		symbol->statement_list->accept(*this);
msousa@417: 	if (NULL != symbol->elseif_statement_list)
msousa@417: 		symbol->elseif_statement_list->accept(*this);
msousa@417: 	if (NULL != symbol->else_statement_list)
msousa@417: 		symbol->else_statement_list->accept(*this);
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(elseif_statement_c *symbol) {
msousa@417: 	symbol->expression->accept(*this);
msousa@417: 	if ((NULL == symbol->expression->datatype) &&
msousa@417: 		(symbol->expression->candidate_datatypes.size() > 0)) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'ELSIF' condition.");
msousa@417: 	}
msousa@417: 	if (NULL != symbol->statement_list)
msousa@417: 		symbol->statement_list->accept(*this);
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(case_statement_c *symbol) {
msousa@417: 	symbol->expression->accept(*this);
msousa@417: 	if ((NULL == symbol->expression->datatype) &&
msousa@417: 		(symbol->expression->candidate_datatypes.size() > 0)) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "'CASE' quantity not an integer or enumerated.");
msousa@417: 	}
msousa@417: 	symbol->case_element_list->accept(*this);
msousa@417: 	if (NULL != symbol->statement_list)
msousa@417: 		symbol->statement_list->accept(*this);
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: /********************************/
msousa@417: /* B 3.2.4 Iteration Statements */
msousa@417: /********************************/
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(for_statement_c *symbol) {
msousa@417: 	symbol->control_variable->accept(*this);
msousa@417: 	symbol->beg_expression->accept(*this);
msousa@417: 	symbol->end_expression->accept(*this);
msousa@417: 	/* Control variable */
msousa@417: 	if ((NULL == symbol->control_variable->datatype) &&
msousa@417: 		(symbol->control_variable->candidate_datatypes.size() > 0)) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' control variable.");
msousa@417: 	}
msousa@417: 	/* BEG expression */
msousa@417: 	if ((NULL == symbol->beg_expression->datatype) &&
msousa@417: 		(symbol->beg_expression->candidate_datatypes.size() > 0)) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' begin expression.");
msousa@417: 	}
msousa@417: 	/* END expression */
msousa@417: 	if ((NULL == symbol->end_expression->datatype) &&
msousa@417: 		(symbol->end_expression->candidate_datatypes.size() > 0)) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' end expression.");
msousa@417: 	}
msousa@417: 	/* BY expression */
msousa@417: 	if ((NULL != symbol->by_expression) &&
msousa@417: 		(NULL == symbol->by_expression->datatype) &&
msousa@417: 		(symbol->end_expression->candidate_datatypes.size() > 0)) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'FOR' by expression.");
msousa@417: 	}
msousa@417: 	/* DO statement */
msousa@417: 	if (NULL != symbol->statement_list)
msousa@417: 		symbol->statement_list->accept(*this);
msousa@417: 
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(while_statement_c *symbol) {
msousa@417: 	symbol->expression->accept(*this);
msousa@417: 	if (symbol->candidate_datatypes.size() != 1) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'WHILE' condition.");
msousa@417: 		return NULL;
msousa@417: 	}
msousa@417: 	if (NULL != symbol->statement_list)
msousa@417: 		symbol->statement_list->accept(*this);
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: void *print_datatypes_error_c::visit(repeat_statement_c *symbol) {
msousa@417: 	if (symbol->candidate_datatypes.size() != 1) {
msousa@427: 		STAGE3_ERROR(0, symbol, symbol, "Invalid data type for 'REPEAT' condition.");
msousa@417: 		return NULL;
msousa@417: 	}
msousa@417: 	if (NULL != symbol->statement_list)
msousa@417: 		symbol->statement_list->accept(*this);
msousa@417: 	symbol->expression->accept(*this);
msousa@417: 	return NULL;
msousa@417: }
msousa@417: 
msousa@417: 
msousa@417: 
msousa@417: 
msousa@417: