1 /*

     2  * (c) 2003 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 /* Returns the function block declaration symbol

    26  * of a specific function block type.

    27  */

    28 

    29 #include "absyntax_utils.hh"

    30 

    31 

    32 search_fb_typedecl_c::search_fb_typedecl_c(symbol_c *search_scope) {

    33   this->search_scope = search_scope;

    34 }

    35 

    36 symbol_c *search_fb_typedecl_c::get_decl(symbol_c *fb_type_name) {

    37   this->search_name = fb_type_name;

    38   return (symbol_c *)search_scope->accept(*this);

    39 }

    40 /**************************************/

    41 /* B.1.5 - Program organization units */

    42 /**************************************/

    43 

    44 /*****************************/

    45 /* B 1.5.2 - Function Blocks */

    46 /*****************************/

    47 void *search_fb_typedecl_c::visit(function_block_declaration_c *symbol) {

    48   if (compare_identifiers(symbol->fblock_name, search_name) == 0)

    49     return symbol;

    50   return NULL;

    51 }

    52 

    53 /**********************/

    54 /* B 1.5.3 - Programs */

    55 /**********************/

    56 void *search_fb_typedecl_c::visit(program_declaration_c *symbol) {

    57   if (compare_identifiers(symbol->program_type_name, search_name) == 0)

    58     return symbol;

    59   return NULL;

    60 }

    61