1 /*

     2  * (c) 2009 Mario de Sousa

     3  *

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

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

     6  * License, or (at your option) any later version.

     7  *

     8  * This program is distributed in the hope that it will be useful, but

     9  * WITHOUT ANY WARRANTY; without even the implied warranty of

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

    11  * Public License for more details.

    12  *

    13  * This code is made available on the understanding that it will not be

    14  * used in safety-critical situations without a full and competent review.

    15  */

    16 

    17 /*

    18  * An IEC 61131-3 IL and ST compiler.

    19  *

    20  * Based on the

    21  * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)

    22  *

    23  */

    24 

    25 

    26 /*

    27  * This is the main stage 3a file.

    28  *

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

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

    31  */

    32 

    33 

    34 

    35 

    36 #ifndef _SEARCH_UTILS_HH

    37 #define _SEARCH_UTILS_HH

    38 

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

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

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

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

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

    44 

    45 

    46 

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

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

    49 

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

    51 extern function_declaration_c null_symbol1;

    52 extern dsymtable_c<function_declaration_c *, &null_symbol1> function_symtable;

    53 

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

    55 extern function_block_declaration_c null_symbol2;

    56 extern symtable_c<function_block_declaration_c *, &null_symbol2> function_block_type_symtable;

    57 

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

    59 extern program_declaration_c null_symbol3;

    60 extern symtable_c<program_declaration_c *, &null_symbol3> program_type_symtable;

    61 

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

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

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

    65  */

    66 extern symbol_c null_symbol4;

    67 extern symtable_c<symbol_c *, &null_symbol4> type_symtable;

    68 

    69 

    70 

    71 /***********************************************************************/

    72 /***********************************************************************/

    73 /***********************************************************************/

    74 /***********************************************************************/

    75 

    76 #include "spec_init_separator.hh"

    77 #include "function_param_iterator.hh"

    78 #include "function_call_iterator.hh"

    79 #include "function_call_param_iterator.hh"

    80 #include "type_initial_value.hh"

    81 #include "search_fb_instance_decl.hh"

    82 #include "search_fb_typedecl.hh"

    83 #include "search_base_type.hh"

    84 #include "search_var_instance_decl.hh"

    85 #include "decompose_var_instance_name.hh"

    86 #include "search_varfb_instance_type.hh"

    87 #include "search_constant_type.hh"

    88 #include "search_expression_type.hh"

    89 #include "get_function_type.h"

    90 

    91 

    92 /***********************************************************************/

    93 /***********************************************************************/

    94 /***********************************************************************/

    95 /***********************************************************************/

    96 /***********************************************************************/

    97 

    98 

    99 

   100 

   101 void absyntax_utils_init(symbol_c *tree_root);

   102 

   103 

   104 #endif /* _SEARCH_UTILS_HH */