absyntax_utils/search_fb_typedecl.hh
author Mario de Sousa <msousa@fe.up.pt>
Wed, 13 Feb 2013 18:56:25 +0000
changeset 810 d9c48ad646f1
parent 279 c0453b7f99df
permissions -rwxr-xr-x
Add a new node to the abstract symtax tree, which will let us do datatype checking of FB variable declarations using the standard algorithm, and no special cases.
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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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/* Returns the function block declaration symbol
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 * of a specific function block type.
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 */
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class search_fb_typedecl_c: public search_visitor_c {
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  private:
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    symbol_c *search_scope;
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    symbol_c *search_name;
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  public:
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    search_fb_typedecl_c(symbol_c *search_scope);
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    symbol_c *get_decl(symbol_c *fb_type_name);
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  private:
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    /**************************************/
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    /* B.1.5 - Program organization units */
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    /**************************************/
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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 - Programs */
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    /**********************/
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    void *visit(program_declaration_c *symbol);
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}; // search_fb_typedecl_c