stage3/declaration_check.hh
author mjsousa
Wed, 24 Dec 2014 13:19:53 +0000
changeset 967 544ff4dff04f
parent 962 98e7a0d3af21
permissions -rw-r--r--
Do constant propagation to symbolic_variables, and correctly handle constant folding and propagation of variable declarations.
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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) 2003-2012  Mario de Sousa (msousa@fe.up.pt)
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 *  Copyright (C) 2012       Manuele Conti (conti.ma@alice.it)
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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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#include <vector>
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#include "../absyntax_utils/absyntax_utils.hh"
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class declaration_check_c : public iterator_visitor_c {
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    int error_count;
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    int current_display_error_level;
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    symbol_c *current_pou_decl;
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    symbol_c *current_resource_decl;
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public:
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    declaration_check_c(symbol_c *ignore);
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    virtual ~declaration_check_c(void);
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    int get_error_count();
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    /*****************************/
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    /* B 1.5.2 - Function Blocks */
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    /*****************************/
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    void *visit(function_block_declaration_c *symbol);
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    /******************************************/
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    /* B 1.5.3 - Declaration & Initialisation */
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    /******************************************/
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    void *visit(program_declaration_c *symbol);
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    /********************************/
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    /* B 1.7 Configuration elements */
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    /********************************/
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    void *visit(configuration_declaration_c *symbol);
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    void *visit(resource_declaration_c      *symbol);
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    void *visit(program_configuration_c     *symbol);
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};