--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/stage3/print_datatypes_error.cc Wed Feb 01 19:49:11 2012 +0000
@@ -0,0 +1,1162 @@
+/*
+ * matiec - a compiler for the programming languages defined in IEC 61131-3
+ *
+ * Copyright (C) 2009-2011 Mario de Sousa (msousa@fe.up.pt)
+ * Copyright (C) 20011-2012 Manuele Conti (manuele.conti@sirius-es.it)
+ * Copyright (C) 20011-2012 Matteo Facchinetti (matteo.facchinetti@sirius-es.it)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * This code is made available on the understanding that it will not be
+ * used in safety-critical situations without a full and competent review.
+ */
+
+/*
+ * An IEC 61131-3 compiler.
+ *
+ * Based on the
+ * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
+ *
+ */
+
+
+/*
+ * Fill candidate list of data types for all symbols
+ */
+
+#include "print_datatypes_error.hh"
+#include <typeinfo>
+#include <list>
+#include <string>
+#include <string.h>
+#include <strings.h>
+
+
+#define FIRST_(symbol1, symbol2) (((symbol1)->first_order < (symbol2)->first_order) ? (symbol1) : (symbol2))
+#define LAST_(symbol1, symbol2) (((symbol1)->last_order > (symbol2)->last_order) ? (symbol1) : (symbol2))
+
+#define STAGE3_ERROR(symbol1, symbol2, ...) { \
+ fprintf(stderr, "%s:%d-%d..%d-%d: error : ", \
+ FIRST_(symbol1,symbol2)->first_file, FIRST_(symbol1,symbol2)->first_line, FIRST_(symbol1,symbol2)->first_column, \
+ LAST_(symbol1,symbol2) ->last_line, LAST_(symbol1,symbol2) ->last_column); \
+ fprintf(stderr, __VA_ARGS__); \
+ fprintf(stderr, "\n"); \
+ il_error = true; \
+ error_found = true;\
+ }
+
+
+/* set to 1 to see debug info during execution */
+static int debug = 0;
+
+print_datatypes_error_c::print_datatypes_error_c(symbol_c *ignore) {
+ error_found = false;
+}
+
+print_datatypes_error_c::~print_datatypes_error_c(void) {
+ error_found = false;
+}
+
+int print_datatypes_error_c::get_error_found() {
+ return error_found;
+}
+
+/* a helper function... */
+symbol_c *print_datatypes_error_c::base_type(symbol_c *symbol) {
+ /* NOTE: symbol == NULL is valid. It will occur when, for e.g., an undefined/undeclared symbolic_variable is used
+ * in the code.
+ */
+ if (symbol == NULL) return NULL;
+ return (symbol_c *)symbol->accept(search_base_type);
+}
+
+/*********************/
+/* B 1.2 - Constants */
+/*********************/
+/******************************/
+/* B 1.2.1 - Numeric Literals */
+/******************************/
+void *print_datatypes_error_c::visit(real_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_REAL data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_REAL data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(integer_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_INT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_INT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(neg_real_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_REAL data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_REAL data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(neg_integer_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_INT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_INT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(binary_integer_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_INT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_INT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(octal_integer_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_INT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_INT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(hex_integer_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_INT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_INT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(integer_literal_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_INT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_INT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(real_literal_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_REAL data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_REAL data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(bit_string_literal_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_BIT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_BIT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(boolean_literal_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_BOOL data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_BOOL data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(boolean_true_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_BOOL data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_BOOL data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(boolean_false_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for ANY_BOOL data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "ANY_BOOL data type not valid in this location.");
+ }
+ return NULL;
+}
+
+/*******************************/
+/* B.1.2.2 Character Strings */
+/*******************************/
+void *print_datatypes_error_c::visit(double_byte_character_string_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for WSTRING data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "WSTRING data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(single_byte_character_string_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for STRING data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "STRING data type not valid in this location.");
+ }
+ return NULL;
+}
+
+/***************************/
+/* B 1.2.3 - Time Literals */
+/***************************/
+/************************/
+/* B 1.2.3.1 - Duration */
+/************************/
+void *print_datatypes_error_c::visit(duration_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Invalid syntax for TIME data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "TIME data type not valid in this location.");
+ }
+ return NULL;
+}
+
+/************************************/
+/* B 1.2.3.2 - Time of day and Date */
+/************************************/
+void *print_datatypes_error_c::visit(time_of_day_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Invalid syntax for TOD data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "TOD data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(date_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Invalid syntax for DATE data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "DATE data type not valid in this location.");
+ }
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(date_and_time_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0) {
+ STAGE3_ERROR(symbol, symbol, "Invalid syntax for DT data type.");
+ } else if (NULL == symbol->datatype) {
+ STAGE3_ERROR(symbol, symbol, "DT data type not valid in this location.");
+ }
+ return NULL;
+}
+
+/**********************/
+/* B 1.3 - Data types */
+/**********************/
+/********************************/
+/* B 1.3.3 - Derived data types */
+/********************************/
+void *print_datatypes_error_c::visit(data_type_declaration_c *symbol) {
+ // TODO !!!
+ /* for the moment we must return NULL so semantic analysis of remaining code is not interrupted! */
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(enumerated_value_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0)
+ STAGE3_ERROR(symbol, symbol, "Ambiguous enumerate value or Variable not declared in this scope.");
+ return NULL;
+}
+
+
+/*********************/
+/* B 1.4 - Variables */
+/*********************/
+void *print_datatypes_error_c::visit(symbolic_variable_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0)
+ STAGE3_ERROR(symbol, symbol, "Variable not declared in this scope.");
+ return NULL;
+}
+
+/********************************************/
+/* B 1.4.1 - Directly Represented Variables */
+/********************************************/
+void *print_datatypes_error_c::visit(direct_variable_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0)
+ STAGE3_ERROR(symbol, symbol, "Numerical result exceeds range for located variable data type.");
+ return NULL;
+}
+
+/*************************************/
+/* B 1.4.2 - Multi-element variables */
+/*************************************/
+/* subscripted_variable '[' subscript_list ']' */
+// SYM_REF2(array_variable_c, subscripted_variable, subscript_list)
+void *print_datatypes_error_c::visit(array_variable_c *symbol) {
+ if (symbol->candidate_datatypes.size() == 0)
+ STAGE3_ERROR(symbol, symbol, "Array variable not declared in this scope.");
+
+ /* recursively call the subscript list to print any errors in the expressions used in the subscript...*/
+ symbol->subscript_list->accept(*this);
+ return NULL;
+}
+
+/* subscript_list ',' subscript */
+// SYM_LIST(subscript_list_c)
+/* NOTE: we inherit from iterator visitor, so we do not need to implement this method... */
+#if 0
+void *print_datatypes_error_c::visit(subscript_list_c *symbol) {
+}
+#endif
+
+
+/* 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)
+/* 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) {
+ if (symbol->candidate_datatypes.size() == 0)
+ STAGE3_ERROR(symbol, symbol, "Structure variable not declared in this scope.");
+ return NULL;
+}
+
+/************************************/
+/* B 1.5 Program organization units */
+/************************************/
+/*********************/
+/* B 1.5.1 Functions */
+/*********************/
+void *print_datatypes_error_c::visit(function_declaration_c *symbol) {
+ search_varfb_instance_type = new search_varfb_instance_type_c(symbol);
+ /* We do not check for data type errors in variable declarations, Skip this for now... */
+// symbol->var_declarations_list->accept(*this);
+ if (debug) printf("Print error data types list in body of function %s\n", ((token_c *)(symbol->derived_function_name))->value);
+ il_parenthesis_level = 0;
+ il_error = false;
+ prev_il_instruction = NULL;
+ symbol->function_body->accept(*this);
+ prev_il_instruction = NULL;
+ delete search_varfb_instance_type;
+ search_varfb_instance_type = NULL;
+ return NULL;
+}
+
+/***************************/
+/* B 1.5.2 Function blocks */
+/***************************/
+void *print_datatypes_error_c::visit(function_block_declaration_c *symbol) {
+ search_varfb_instance_type = new search_varfb_instance_type_c(symbol);
+ /* We do not check for data type errors in variable declarations, Skip this for now... */
+// symbol->var_declarations->accept(*this);
+ if (debug) printf("Print error data types list in body of FB %s\n", ((token_c *)(symbol->fblock_name))->value);
+ il_parenthesis_level = 0;
+ il_error = false;
+ prev_il_instruction = NULL;
+ symbol->fblock_body->accept(*this);
+ prev_il_instruction = NULL;
+ delete search_varfb_instance_type;
+ search_varfb_instance_type = NULL;
+ return NULL;
+}
+
+/**********************/
+/* B 1.5.3 - Programs */
+/**********************/
+void *print_datatypes_error_c::visit(program_declaration_c *symbol) {
+ search_varfb_instance_type = new search_varfb_instance_type_c(symbol);
+ /* We do not check for data type errors in variable declarations, Skip this for now... */
+// symbol->var_declarations->accept(*this);
+ if (debug) printf("Print error data types list in body of program %s\n", ((token_c *)(symbol->program_type_name))->value);
+ il_parenthesis_level = 0;
+ il_error = false;
+ prev_il_instruction = NULL;
+ symbol->function_block_body->accept(*this);
+ prev_il_instruction = NULL;
+ delete search_varfb_instance_type;
+ search_varfb_instance_type = NULL;
+ return NULL;
+}
+
+
+
+/********************************/
+/* B 1.7 Configuration elements */
+/********************************/
+void *print_datatypes_error_c::visit(configuration_declaration_c *symbol) {
+#if 0
+ // TODO !!!
+ /* for the moment we must return NULL so semantic analysis of remaining code is not interrupted! */
+#endif
+ return NULL;
+}
+
+/****************************************/
+/* B.2 - Language IL (Instruction List) */
+/****************************************/
+/***********************************/
+/* B 2.1 Instructions and Operands */
+/***********************************/
+// void *visit(instruction_list_c *symbol);
+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 */
+ symbol->il_simple_operator->accept(*this);
+ il_operand = NULL;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(il_function_call_c *symbol) {
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(il_expression_c *symbol) {
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(il_fb_call_c *symbol) {
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(il_formal_funct_call_c *symbol) {
+ return NULL;
+}
+
+
+/*
+ void *visit(il_operand_list_c *symbol);
+ void *visit(simple_instr_list_c *symbol);
+ void *visit(il_param_list_c *symbol);
+ void *visit(il_param_assignment_c *symbol);
+ void *visit(il_param_out_assignment_c *symbol);
+ */
+
+/*******************/
+/* B 2.2 Operators */
+/*******************/
+void *print_datatypes_error_c::visit(LD_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(LDN_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'LDN' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(ST_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+ /* 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?
+ */
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'ST' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(STN_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+ /* 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?
+ */
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'STN' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(NOT_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(S_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'S' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(R_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'R' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(S1_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'S1' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(R1_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'R1' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(CLK_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(CU_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(CD_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(PV_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(IN_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(PT_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(AND_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'AND' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(OR_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'OR' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(XOR_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'XOR' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(ANDN_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'ANDN' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(ORN_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'ORN' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(XORN_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'ORN' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(ADD_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'ADD' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(SUB_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'SUB' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(MUL_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'MUL' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(DIV_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'DIV' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(MOD_operator_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ il_operand->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (il_operand->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'MOD' operator.");
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(GT_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(GE_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(EQ_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(LT_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(LE_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(NE_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(CAL_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(CALC_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(CALCN_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(RET_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(RETC_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(RETCN_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(JMP_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(JMPC_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(JMPCN_operator_c *symbol) {
+ prev_il_instruction = symbol;
+ return NULL;
+}
+
+/* Symbol class handled together with function call checks */
+// void *visit(il_assign_operator_c *symbol, variable_name);
+/* Symbol class handled together with function call checks */
+// void *visit(il_assign_operator_c *symbol, option, variable_name);
+
+/***************************************/
+/* B.3 - Language ST (Structured Text) */
+/***************************************/
+/***********************/
+/* B 3.1 - Expressions */
+/***********************/
+
+void *print_datatypes_error_c::visit(or_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'OR' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(xor_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'XOR' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(and_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for 'AND' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(equ_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for '=' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(notequ_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for '<>' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(lt_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for '<' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(gt_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for '>' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(le_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for '<=' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(ge_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for '>=' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(add_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Current '+' result and operand not of same data type.");
+
+ return NULL;
+}
+
+
+
+void *print_datatypes_error_c::visit(sub_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Current '-' result and operand not of same data type.");
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(mul_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Current '*' result and operand not of same data type.");
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(div_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Current '/' result and operand not of same data type.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(mod_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Current 'MOD' result and operand not of same data type.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(power_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->l_exp->accept(*this);
+ symbol->r_exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->l_exp->candidate_datatypes.size() > 0) &&
+ (symbol->r_exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Data type mismatch for '**' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(neg_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'NEG' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(not_expression_c *symbol) {
+ if (NULL != symbol->datatype) return NULL;
+
+ symbol->exp->accept(*this);
+ if ((symbol->candidate_datatypes.size() == 0) &&
+ (symbol->exp->candidate_datatypes.size() > 0))
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'NOT' expression.");
+ return NULL;
+}
+
+
+void *print_datatypes_error_c::visit(function_invocation_c *symbol) {
+ list_c *parameter_list;
+ function_declaration_c * f_decl;
+
+ if (NULL != symbol->datatype) return NULL;
+ if (NULL != symbol->formal_param_list)
+ parameter_list = (list_c *)symbol->formal_param_list;
+ else if (NULL != symbol->nonformal_param_list)
+ parameter_list = (list_c *)symbol->nonformal_param_list;
+ else ERROR;
+ parameter_list->accept(*this);
+ if (symbol->candidate_datatypes.size() == 0) {
+ identifier_c *fname = (identifier_c *)symbol->function_name;
+ f_decl = (function_declaration_c *)symbol->called_function_declaration;
+ /*
+ * Manuele: In the future we have to test parameter number
+ * and show a specific message.
+ */
+ STAGE3_ERROR(symbol, symbol, "No matching overloaded '%s' function call.", fname->value);
+ }
+ return NULL;
+}
+
+/********************/
+/* B 3.2 Statements */
+/********************/
+
+/*********************************/
+/* B 3.2.1 Assignment Statements */
+/*********************************/
+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))
+ STAGE3_ERROR(symbol, symbol, "Invalid data types for ':=' operation.");
+ return NULL;
+}
+
+/********************************/
+/* B 3.2.3 Selection Statements */
+/********************************/
+
+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)) {
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'IF' condition.");
+ }
+ if (NULL != symbol->statement_list)
+ symbol->statement_list->accept(*this);
+ if (NULL != symbol->elseif_statement_list)
+ symbol->elseif_statement_list->accept(*this);
+ if (NULL != symbol->else_statement_list)
+ symbol->else_statement_list->accept(*this);
+ return NULL;
+}
+
+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)) {
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'ELSIF' condition.");
+ }
+ if (NULL != symbol->statement_list)
+ symbol->statement_list->accept(*this);
+ return NULL;
+}
+
+
+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)) {
+ STAGE3_ERROR(symbol, symbol, "'CASE' quantity not an integer or enumerated.");
+ }
+ symbol->case_element_list->accept(*this);
+ if (NULL != symbol->statement_list)
+ symbol->statement_list->accept(*this);
+ return NULL;
+}
+
+/********************************/
+/* B 3.2.4 Iteration Statements */
+/********************************/
+
+void *print_datatypes_error_c::visit(for_statement_c *symbol) {
+ symbol->control_variable->accept(*this);
+ 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)) {
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'FOR' control variable.");
+ }
+ /* BEG expression */
+ if ((NULL == symbol->beg_expression->datatype) &&
+ (symbol->beg_expression->candidate_datatypes.size() > 0)) {
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'FOR' begin expression.");
+ }
+ /* END expression */
+ if ((NULL == symbol->end_expression->datatype) &&
+ (symbol->end_expression->candidate_datatypes.size() > 0)) {
+ STAGE3_ERROR(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)) {
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'FOR' by expression.");
+ }
+ /* DO statement */
+ if (NULL != symbol->statement_list)
+ symbol->statement_list->accept(*this);
+
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(while_statement_c *symbol) {
+ symbol->expression->accept(*this);
+ if (symbol->candidate_datatypes.size() != 1) {
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'WHILE' condition.");
+ return NULL;
+ }
+ if (NULL != symbol->statement_list)
+ symbol->statement_list->accept(*this);
+ return NULL;
+}
+
+void *print_datatypes_error_c::visit(repeat_statement_c *symbol) {
+ if (symbol->candidate_datatypes.size() != 1) {
+ STAGE3_ERROR(symbol, symbol, "Invalid data type for 'REPEAT' condition.");
+ return NULL;
+ }
+ if (NULL != symbol->statement_list)
+ symbol->statement_list->accept(*this);
+ symbol->expression->accept(*this);
+ return NULL;
+}
+
+
+
+
+