/*
* 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 <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)
*
*/
/* NOTE: The use of this visitor class is now deprecated.
* The new version of stage3 data type checking adds an entry to
* every relevant object in the abstract syntax tree defining
* the data type of that object. Please use that instead!
*/
/* 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 "../absyntax/visitor.hh"
#ifndef _SEARCH_CONSTANT_TYPE_HH
#define _SEARCH_CONSTANT_TYPE_HH
class search_constant_type_c: public search_visitor_c {
public:
/* object used to identify an entry in the abstract syntax tree with an invalid data type */
/* This is only used from stage3 onwards. Stages 1 and 2 will never create any instances of invalid_type_name_c */
static invalid_type_name_c invalid_type_name;
/**********************/
/* B.1.3 - Data types */
/**********************/
/***********************************/
/* B 1.3.1 - Elementary Data Types */
/***********************************/
static real_type_name_c real_type_name;
static sint_type_name_c sint_type_name;
static lint_type_name_c lint_type_name;
static dint_type_name_c dint_type_name;
static date_type_name_c date_type_name;
static dword_type_name_c dword_type_name;
static dt_type_name_c dt_type_name;
static tod_type_name_c tod_type_name;
static udint_type_name_c udint_type_name;
static word_type_name_c word_type_name;
static wstring_type_name_c wstring_type_name;
static string_type_name_c string_type_name;
static lword_type_name_c lword_type_name;
static uint_type_name_c uint_type_name;
static lreal_type_name_c lreal_type_name;
static byte_type_name_c byte_type_name;
static usint_type_name_c usint_type_name;
static ulint_type_name_c ulint_type_name;
static bool_type_name_c bool_type_name;
static time_type_name_c time_type_name;
static int_type_name_c int_type_name;
/******************************************************/
/* Extensions to the base standard as defined in */
/* "Safety Software Technical Specification, */
/* Part 1: Concepts and Function Blocks, */
/* Version 1.0 – Official Release" */
/* by PLCopen - Technical Committee 5 - 2006-01-31 */
/******************************************************/
// static safebool_type_name_c safebool_type_name;
/* The following is required because the expression (TOD_var - TOD_var) will result in a data type
* (in this case, TIME) that is neither of the expression elements...
*/
static safetime_type_name_c safetime_type_name;
static safetod_type_name_c safetod_type_name;
static safedt_type_name_c safedt_type_name;
static safedate_type_name_c safedate_type_name;
static safereal_type_name_c safereal_type_name;
static safesint_type_name_c safesint_type_name;
static safelint_type_name_c safelint_type_name;
static safedint_type_name_c safedint_type_name;
static safedword_type_name_c safedword_type_name;
static safeudint_type_name_c safeudint_type_name;
static safeword_type_name_c safeword_type_name;
static safewstring_type_name_c safewstring_type_name;
static safestring_type_name_c safestring_type_name;
static safelword_type_name_c safelword_type_name;
static safeuint_type_name_c safeuint_type_name;
static safelreal_type_name_c safelreal_type_name;
static safebyte_type_name_c safebyte_type_name;
static safeusint_type_name_c safeusint_type_name;
static safeulint_type_name_c safeulint_type_name;
static safebool_type_name_c safebool_type_name;
static safeint_type_name_c safeint_type_name;
public:
symbol_c *get_type(symbol_c *constant);
private:
/*********************/
/* B 1.2 - Constants */
/*********************/
/******************************/
/* B 1.2.1 - Numeric Literals */
/******************************/
void *visit(real_c *symbol);
void *visit(neg_real_c *symbol);
void *visit(integer_c *symbol);
void *visit(neg_integer_c *symbol);
void *visit(binary_integer_c *symbol);
void *visit(octal_integer_c *symbol);
void *visit(hex_integer_c *symbol);
void *visit(integer_literal_c *symbol);
void *visit(real_literal_c *symbol);
void *visit(bit_string_literal_c *symbol);
void *visit(boolean_literal_c *symbol);
void *visit(boolean_true_c *symbol);
void *visit(boolean_false_c *symbol);
/*******************************/
/* B.1.2.2 Character Strings */
/*******************************/
void *visit(double_byte_character_string_c *symbol);
void *visit(single_byte_character_string_c *symbol);
/***************************/
/* B 1.2.3 - Time Literals */
/***************************/
/************************/
/* B 1.2.3.1 - Duration */
/************************/
void *visit(neg_time_c *symbol);
void *visit(duration_c *symbol);
void *visit(interval_c *symbol);
void *visit(fixed_point_c *symbol);
/************************************/
/* B 1.2.3.2 - Time of day and Date */
/************************************/
void *visit(time_of_day_c *symbol);
void *visit(daytime_c *symbol);
void *visit(date_c *symbol);
void *visit(date_literal_c *symbol);
void *visit(date_and_time_c *symbol);
/********************************/
/* B 1.3.3 - Derived data types */
/********************************/
void *visit(enumerated_value_c *symbol);
}; // search_constant_type_c
#endif /* ifndef _SEARCH_CONSTANT_TYPE_HH */