author | Mario de Sousa <msousa@fe.up.pt> |
Sat, 14 Apr 2012 16:53:35 +0100 | |
changeset 506 | 2b4e69c7ff8b |
parent 495 | 8c6823fee086 |
child 547 | dab341e80664 |
permissions | -rwxr-xr-x |
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/* |
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* matiec - a compiler for the programming languages defined in IEC 61131-3 |
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* |
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* Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt) |
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* Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* |
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* This code is made available on the understanding that it will not be |
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* used in safety-critical situations without a full and competent review. |
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*/ |
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/* |
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* An IEC 61131-3 compiler. |
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* |
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* Based on the |
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* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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* |
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*/ |
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/* NOTE: The use of this visitor class is now deprecated. |
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* The new version of stage3 data type checking adds an entry to |
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* every relevant object in the abstract syntax tree defining |
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* the data type of that object. Please use that instead! |
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*/ |
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/* Determine the data type of a specific constant or variable. |
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* A reference to the relevant type definition is returned. |
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* |
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* For example: |
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* 22 -> returns reference to a int_type_name_c object. |
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* 22.2 -> returns reference to a real_type_name_c object. |
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* LREAL#22.2 -> returns reference to a lreal_type_name_c object. |
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* etc... |
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*/ |
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#include "../absyntax/visitor.hh" |
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#ifndef _SEARCH_CONSTANT_TYPE_HH |
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#define _SEARCH_CONSTANT_TYPE_HH |
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class search_constant_type_c: public search_visitor_c { |
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public: |
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/* object used to identify an entry in the abstract syntax tree with an invalid data type */ |
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/* This is only used from stage3 onwards. Stages 1 and 2 will never create any instances of invalid_type_name_c */ |
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static invalid_type_name_c invalid_type_name; |
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/**********************/ |
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/* B.1.3 - Data types */ |
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/**********************/ |
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/***********************************/ |
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/* B 1.3.1 - Elementary Data Types */ |
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/***********************************/ |
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static real_type_name_c real_type_name; |
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static sint_type_name_c sint_type_name; |
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static lint_type_name_c lint_type_name; |
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static dint_type_name_c dint_type_name; |
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static date_type_name_c date_type_name; |
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static dword_type_name_c dword_type_name; |
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static dt_type_name_c dt_type_name; |
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static tod_type_name_c tod_type_name; |
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static udint_type_name_c udint_type_name; |
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static word_type_name_c word_type_name; |
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static wstring_type_name_c wstring_type_name; |
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static string_type_name_c string_type_name; |
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static lword_type_name_c lword_type_name; |
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static uint_type_name_c uint_type_name; |
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static lreal_type_name_c lreal_type_name; |
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static byte_type_name_c byte_type_name; |
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static usint_type_name_c usint_type_name; |
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static ulint_type_name_c ulint_type_name; |
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static bool_type_name_c bool_type_name; |
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static time_type_name_c time_type_name; |
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static int_type_name_c int_type_name; |
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/* temporarily here until we remove the st_code_gen.c and il_code_gen.c files... */ |
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static integer_c integer; |
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/******************************************************/ |
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/* Extensions to the base standard as defined in */ |
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/* "Safety Software Technical Specification, */ |
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/* Part 1: Concepts and Function Blocks, */ |
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/* Version 1.0 – Official Release" */ |
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/* by PLCopen - Technical Committee 5 - 2006-01-31 */ |
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/******************************************************/ |
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// static safebool_type_name_c safebool_type_name; |
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/* The following is required because the expression (TOD_var - TOD_var) will result in a data type |
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* (in this case, TIME) that is neither of the expression elements... |
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*/ |
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static safetime_type_name_c safetime_type_name; |
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static safetod_type_name_c safetod_type_name; |
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static safedt_type_name_c safedt_type_name; |
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static safedate_type_name_c safedate_type_name; |
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static safereal_type_name_c safereal_type_name; |
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static safesint_type_name_c safesint_type_name; |
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static safelint_type_name_c safelint_type_name; |
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static safedint_type_name_c safedint_type_name; |
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static safedword_type_name_c safedword_type_name; |
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static safeudint_type_name_c safeudint_type_name; |
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static safeword_type_name_c safeword_type_name; |
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static safewstring_type_name_c safewstring_type_name; |
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static safestring_type_name_c safestring_type_name; |
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static safelword_type_name_c safelword_type_name; |
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static safeuint_type_name_c safeuint_type_name; |
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static safelreal_type_name_c safelreal_type_name; |
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static safebyte_type_name_c safebyte_type_name; |
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static safeusint_type_name_c safeusint_type_name; |
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static safeulint_type_name_c safeulint_type_name; |
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static safebool_type_name_c safebool_type_name; |
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static safeint_type_name_c safeint_type_name; |
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public: |
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symbol_c *get_type(symbol_c *constant); |
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private: |
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/*********************/ |
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/* B 1.2 - Constants */ |
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/*********************/ |
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/******************************/ |
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/* B 1.2.1 - Numeric Literals */ |
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/******************************/ |
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void *visit(real_c *symbol); |
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void *visit(neg_real_c *symbol); |
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void *visit(integer_c *symbol); |
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void *visit(neg_integer_c *symbol); |
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void *visit(binary_integer_c *symbol); |
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void *visit(octal_integer_c *symbol); |
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void *visit(hex_integer_c *symbol); |
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void *visit(integer_literal_c *symbol); |
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void *visit(real_literal_c *symbol); |
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void *visit(bit_string_literal_c *symbol); |
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void *visit(boolean_literal_c *symbol); |
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void *visit(boolean_true_c *symbol); |
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void *visit(boolean_false_c *symbol); |
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/*******************************/ |
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/* B.1.2.2 Character Strings */ |
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/*******************************/ |
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void *visit(double_byte_character_string_c *symbol); |
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void *visit(single_byte_character_string_c *symbol); |
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/***************************/ |
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/* B 1.2.3 - Time Literals */ |
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/***************************/ |
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/************************/ |
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/* B 1.2.3.1 - Duration */ |
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/************************/ |
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void *visit(neg_time_c *symbol); |
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void *visit(duration_c *symbol); |
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void *visit(fixed_point_c *symbol); |
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void *visit(days_c *symbol); |
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void *visit(hours_c *symbol); |
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void *visit(minutes_c *symbol); |
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void *visit(seconds_c *symbol); |
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void *visit(milliseconds_c *symbol); |
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/************************************/ |
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/* B 1.2.3.2 - Time of day and Date */ |
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/************************************/ |
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void *visit(time_of_day_c *symbol); |
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void *visit(daytime_c *symbol); |
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void *visit(date_c *symbol); |
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void *visit(date_literal_c *symbol); |
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void *visit(date_and_time_c *symbol); |
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/********************************/ |
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/* B 1.3.3 - Derived data types */ |
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/********************************/ |
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void *visit(enumerated_value_c *symbol); |
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}; // search_constant_type_c |
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#endif /* ifndef _SEARCH_CONSTANT_TYPE_HH */ |