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/*

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 *  matiec - a compiler for the programming languages defined in IEC 61131-3

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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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/*

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 * Some classes to help with debuging.

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 *

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 * These classes will print out the current state of a symbol or a portion of the Abstract Syntax Tree.

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 */

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#include "../absyntax/visitor.hh"

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class print_symbol_c: public fcall_visitor_c { 

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  public:

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    static void print(symbol_c *symbol);

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  protected:

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    void fcall(symbol_c *symbol);  

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    /* AST symbols with extra data have their own specialised methods for printing that data */

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    void *visit(il_instruction_c *symbol);

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  private:

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    static print_symbol_c *singleton;

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    void dump_symbol(symbol_c* symbol);

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};

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class print_ast_c: public fcall_iterator_visitor_c { 

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  public:

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    static void print(symbol_c *symbol);

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  protected:

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  void prefix_fcall(symbol_c *symbol);

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  void suffix_fcall(symbol_c *symbol);  

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  private:

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    static print_ast_c *singleton;    

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};

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