--- 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 <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)
- *
- */
-
-
-/*
- * 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;
-}
-
-
-
-
-
-
-
-