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/*

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 * (c) 2009 Mario de Sousa

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 *

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 * Offered to the public under the terms of the GNU General Public License

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 * as published by the Free Software Foundation; either version 2 of the

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 * License, or (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, but

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 * WITHOUT ANY WARRANTY; without even the implied warranty of

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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General

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 * Public License for more details.

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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 IL and ST 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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 * This is the main stage 3a file.

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 *

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 * In stage 3a some helpful symbol tables are instanciated and populated.

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 * These symbol tables wll then be used by stage3b and atage4 code generators.

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 */

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#ifndef _SEARCH_UTILS_HH

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#define _SEARCH_UTILS_HH

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// #include <stdio.h>  /* required for NULL */

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#include "../util/symtable.hh"

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#include "../util/dsymtable.hh"

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

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

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/* returns 0 if the names are equal!! Case is ignored. */

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int compare_identifiers(symbol_c *ident1, symbol_c *ident2);

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/* A symbol table with all globally declared functions... */

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extern function_declaration_c null_symbol1;

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extern dsymtable_c<function_declaration_c *, &null_symbol1> function_symtable;

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/* A symbol table with all globally declared functions block types... */

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extern function_block_declaration_c null_symbol2;

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extern symtable_c<function_block_declaration_c *, &null_symbol2> function_block_type_symtable;

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/* A symbol table with all globally declared program types... */

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extern program_declaration_c null_symbol3;

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extern symtable_c<program_declaration_c *, &null_symbol3> program_type_symtable;

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/* A symbol table with all user declared type definitions... */

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/* Note that function block types and program types have their

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 * own symbol tables, so do not get placed in this symbol table!

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 */

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extern symbol_c null_symbol4;

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extern symtable_c<symbol_c *, &null_symbol4> type_symtable;

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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#include "spec_init_separator.hh"

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#include "function_param_iterator.hh"

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#include "function_call_iterator.hh"

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#include "function_call_param_iterator.hh"

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#include "type_initial_value.hh"

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#include "search_fb_instance_decl.hh"

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#include "search_fb_typedecl.hh"

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#include "search_base_type.hh"

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#include "search_var_instance_decl.hh"

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#include "decompose_var_instance_name.hh"

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#include "search_varfb_instance_type.hh"

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#include "search_constant_type.hh"

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#include "search_expression_type.hh"

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#include "get_function_type.h"

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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void absyntax_utils_init(symbol_c *tree_root);

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#endif /* _SEARCH_UTILS_HH */