diff -r bb4511694c0e -r ec8df1de3e08 absyntax_utils/search_constant_type.cc --- a/absyntax_utils/search_constant_type.cc Fri Oct 26 13:48:16 2012 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,180 +0,0 @@ -/* - * matiec - a compiler for the programming languages defined in IEC 61131-3 - * - * Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt) - * Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant - * - * 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) - * - */ - -/* Determine the data type of a specific constant or variable. - * A reference to the relevant type definition is returned. - * - * For example: - * 22 -> returns reference to a int_type_name_c object. - * 22.2 -> returns reference to a real_type_name_c object. - * LREAL#22.2 -> returns reference to a lreal_type_name_c object. - * etc... - */ - - -#include "../util/symtable.hh" -#include "search_constant_type.hh" -#include "absyntax_utils.hh" -#include "../main.hh" // required for ERROR() and ERROR_MSG() macros. - - - -symbol_c *search_constant_type_c::get_type(symbol_c *constant) { - return (symbol_c *)constant->accept(*this); -} - - -/*********************/ -/* B 1.2 - Constants */ -/*********************/ - -/******************************/ -/* B 1.2.1 - Numeric Literals */ -/******************************/ -/* Numeric literals without any explicit type cast have unknown data type, - * so we continue considering them as their own basic data types until - * they can be resolved (for example, when using '30+x' where 'x' is a LINT variable, the - * numeric literal '30' must then be considered a LINT so the ADD function may be called - * with all inputs of the same data type. - * If 'x' were a SINT, then the '30' would have to be a SINT too! - */ -void *search_constant_type_c::visit(real_c *symbol) {return (void *)symbol;} -void *search_constant_type_c::visit(neg_real_c *symbol) {return (void *)symbol;} -void *search_constant_type_c::visit(integer_c *symbol) {return (void *)symbol;} -void *search_constant_type_c::visit(neg_integer_c *symbol) {return (void *)symbol;} -void *search_constant_type_c::visit(binary_integer_c *symbol) {return (void *)symbol;} -void *search_constant_type_c::visit(octal_integer_c *symbol) {return (void *)symbol;} -void *search_constant_type_c::visit(hex_integer_c *symbol) {return (void *)symbol;} - -void *search_constant_type_c::visit(integer_literal_c *symbol) - {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} -void *search_constant_type_c::visit(real_literal_c *symbol) - {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} -void *search_constant_type_c::visit(bit_string_literal_c *symbol) - {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} -void *search_constant_type_c::visit(boolean_literal_c *symbol) - {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} - -void *search_constant_type_c::visit(boolean_true_c *symbol) {return (void *)symbol;} -void *search_constant_type_c::visit(boolean_false_c *symbol) {return (void *)symbol;} - - -/*******************************/ -/* B.1.2.2 Character Strings */ -/*******************************/ -void *search_constant_type_c::visit(double_byte_character_string_c *symbol) {return (void *)&wstring_type_name;} -void *search_constant_type_c::visit(single_byte_character_string_c *symbol) {return (void *)&string_type_name;} - -/***************************/ -/* B 1.2.3 - Time Literals */ -/***************************/ -/************************/ -/* B 1.2.3.1 - Duration */ -/************************/ -void *search_constant_type_c::visit(neg_time_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ -void *search_constant_type_c::visit(duration_c *symbol) {return (void *)(symbol->type_name);} -void *search_constant_type_c::visit(fixed_point_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ -void *search_constant_type_c::visit(interval_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ - -/************************************/ -/* B 1.2.3.2 - Time of day and Date */ -/************************************/ -void *search_constant_type_c::visit(time_of_day_c *symbol) {return (void *)(symbol->type_name);} -void *search_constant_type_c::visit(daytime_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ -void *search_constant_type_c::visit(date_c *symbol) {return (void *)(symbol->type_name);} -void *search_constant_type_c::visit(date_literal_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ -void *search_constant_type_c::visit(date_and_time_c *symbol) {return (void *)(symbol->type_name);} - -/********************************/ -/* B 1.3.3 - Derived data types */ -/********************************/ -void *search_constant_type_c::visit(enumerated_value_c *symbol) { - if (symbol->type != NULL) - return (void *)(symbol->type); - - symbol_c *value_type = enumerated_value_symtable.find_value(symbol->value); - if (value_type == enumerated_value_symtable.end_value()) - return NULL; - return (void *)value_type; -} - - - - -invalid_type_name_c search_constant_type_c::invalid_type_name; - - -real_type_name_c search_constant_type_c::real_type_name; -sint_type_name_c search_constant_type_c::sint_type_name; -lint_type_name_c search_constant_type_c::lint_type_name; -dint_type_name_c search_constant_type_c::dint_type_name; -date_type_name_c search_constant_type_c::date_type_name; -dword_type_name_c search_constant_type_c::dword_type_name; -dt_type_name_c search_constant_type_c::dt_type_name; -tod_type_name_c search_constant_type_c::tod_type_name; -udint_type_name_c search_constant_type_c::udint_type_name; -word_type_name_c search_constant_type_c::word_type_name; -wstring_type_name_c search_constant_type_c::wstring_type_name; -string_type_name_c search_constant_type_c::string_type_name; -lword_type_name_c search_constant_type_c::lword_type_name; -uint_type_name_c search_constant_type_c::uint_type_name; -lreal_type_name_c search_constant_type_c::lreal_type_name; -byte_type_name_c search_constant_type_c::byte_type_name; -usint_type_name_c search_constant_type_c::usint_type_name; -ulint_type_name_c search_constant_type_c::ulint_type_name; -bool_type_name_c search_constant_type_c::bool_type_name; -time_type_name_c search_constant_type_c::time_type_name; -int_type_name_c search_constant_type_c::int_type_name; - -safetime_type_name_c search_constant_type_c::safetime_type_name; -safetod_type_name_c search_constant_type_c::safetod_type_name; -safedt_type_name_c search_constant_type_c::safedt_type_name; -safedate_type_name_c search_constant_type_c::safedate_type_name; -safereal_type_name_c search_constant_type_c::safereal_type_name; -safesint_type_name_c search_constant_type_c::safesint_type_name; -safelint_type_name_c search_constant_type_c::safelint_type_name; -safedint_type_name_c search_constant_type_c::safedint_type_name; -safedword_type_name_c search_constant_type_c::safedword_type_name; -safeudint_type_name_c search_constant_type_c::safeudint_type_name; -safeword_type_name_c search_constant_type_c::safeword_type_name; -safewstring_type_name_c search_constant_type_c::safewstring_type_name; -safestring_type_name_c search_constant_type_c::safestring_type_name; -safelword_type_name_c search_constant_type_c::safelword_type_name; -safeuint_type_name_c search_constant_type_c::safeuint_type_name; -safelreal_type_name_c search_constant_type_c::safelreal_type_name; -safebyte_type_name_c search_constant_type_c::safebyte_type_name; -safeusint_type_name_c search_constant_type_c::safeusint_type_name; -safeulint_type_name_c search_constant_type_c::safeulint_type_name; -safebool_type_name_c search_constant_type_c::safebool_type_name; -safeint_type_name_c search_constant_type_c::safeint_type_name; - -