diff -r a3b8925e640c -r 13b5b7faa3d7 stage3/range_check.cc --- a/stage3/range_check.cc Tue May 15 18:59:32 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,175 +0,0 @@ -/* - * matiec - a compiler for the programming languages defined in IEC 61131-3 - * - * Copyright (C) 2009-2012 Mario de Sousa (msousa@fe.up.pt) - * Copyright (C) 2012 Manuele Conti (conti.ma@alice.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 . - * - * - * 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) - * - */ - - -/* - * TODO: - * - Check subscript values fall within allowed range. - * For the checking of subscript values to work correctly, we would need to have constant folding working too: - * array_var[8 + 99] can not be checked without constant folding. - * However, even without constant folding range check may be usefull, - * and later changing it to use the values coming out of constant folding should not be very difficult. - * - */ - - -#include "range_check.hh" - -#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(error_level, symbol1, symbol2, ...) { \ - if (current_display_error_level >= error_level) { \ - 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"); \ - error_count++; \ - } \ -} - - -#define STAGE3_WARNING(symbol1, symbol2, ...) { \ - fprintf(stderr, "%s:%d-%d..%d-%d: warning: ", \ - 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"); \ - warning_found = true; \ -} - - -range_check_c::range_check_c(symbol_c *ignore) { - error_count = 0; - current_display_error_level = 0; -} - -range_check_c::~range_check_c(void) { -} - -int range_check_c::get_error_count() { - return error_count; -} - -void range_check_c::check_range_array_check(array_variable_c *symbol) { - int dimension_count; - symbol_c* dimension; - var_declarations_c *var_decl; - array_dimension_iterator_c* array_dimension_iterator; - - var_decl = (var_declarations_c *)search_varfb_instance_type->get_basetype_decl(symbol->subscripted_variable); - array_dimension_iterator = new array_dimension_iterator_c(var_decl); - for (dimension_count = 0; NULL != array_dimension_iterator->next(); dimension_count++); - if (dimension_count != ((list_c *)symbol->subscript_list)->n) - STAGE3_ERROR(0, symbol, symbol, "Number of dimensions does not match, Array have %d dimension(s)", dimension_count); -} - -/*********************/ -/* B 1.4 - Variables */ -/*********************/ -/*************************************/ -/* B 1.4.2 - Multi-element variables */ -/*************************************/ -void *range_check_c::visit(array_variable_c *symbol) { - check_range_array_check(symbol); - return NULL; -} - - -/**************************************/ -/* B 1.5 - Program organisation units */ -/**************************************/ -/***********************/ -/* B 1.5.1 - Functions */ -/***********************/ -void *range_check_c::visit(function_declaration_c *symbol) { - search_varfb_instance_type = new search_varfb_instance_type_c(symbol); - search_var_instance_decl = new search_var_instance_decl_c(symbol); - symbol->function_body->accept(*this); - delete search_varfb_instance_type; - delete search_var_instance_decl; - search_varfb_instance_type = NULL; - search_var_instance_decl = NULL; - return NULL; -} - -/*****************************/ -/* B 1.5.2 - Function blocks */ -/*****************************/ -void *range_check_c::visit(function_block_declaration_c *symbol) { - search_varfb_instance_type = new search_varfb_instance_type_c(symbol); - search_var_instance_decl = new search_var_instance_decl_c(symbol); - symbol->fblock_body->accept(*this); - delete search_varfb_instance_type; - delete search_var_instance_decl; - search_varfb_instance_type = NULL; - search_var_instance_decl = NULL; - return NULL; -} - -/**********************/ -/* B 1.5.3 - Programs */ -/**********************/ -void *range_check_c::visit(program_declaration_c *symbol) { - search_varfb_instance_type = new search_varfb_instance_type_c(symbol); - search_var_instance_decl = new search_var_instance_decl_c(symbol); - symbol->function_block_body->accept(*this); - delete search_varfb_instance_type; - delete search_var_instance_decl; - search_varfb_instance_type = NULL; - search_var_instance_decl = NULL; - return NULL; -} - - - -/***************************************/ -/* B.3 - Language ST (Structured Text) */ -/***************************************/ -/*********************************/ -/* B 3.2.1 Assignment Statements */ -/*********************************/ -void *range_check_c::visit(assignment_statement_c *symbol) { - symbol->l_exp->accept(*this); - symbol->r_exp->accept(*this); - return NULL; -} - - - - - - - -