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/*
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* (c) 2003 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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/* 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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this->search_scope = search_scope;
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}
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symbol_c *get_decl(symbol_c *fb_type_name) {
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this->search_name = fb_type_name;
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return (symbol_c *)search_scope->accept(*this);
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}
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public:
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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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if (compare_identifiers(symbol->fblock_name, search_name) == 0)
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return symbol;
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return NULL;
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}
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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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if (compare_identifiers(symbol->program_type_name, search_name) == 0)
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return symbol;
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return NULL;
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}
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};
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