absyntax_utils/search_il_label.hh
changeset 460 00f39a4b25fb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/absyntax_utils/search_il_label.hh	Fri Mar 02 17:59:20 2012 +0000
@@ -0,0 +1,95 @@
+/*
+ *  matiec - a compiler for the programming languages defined in IEC 61131-3
+ *
+ *  Copyright (C) 2012  Mario de Sousa (msousa@fe.up.pt)
+ *
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * This code is made available on the understanding that it will not be
+ * used in safety-critical situations without a full and competent review.
+ */
+
+/*
+ * An IEC 61131-3 compiler.
+ *
+ * Based on the
+ * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
+ *
+ */
+
+
+/*
+ *  Search for a specific label in an IL list. 
+ *
+ *  when instantiated, must be given a pointer to one of the following
+ *     - function_declaration_c
+ *     - function_block_declaration_c
+ *     - program_declaration_c
+ *     - instruction_list_c
+ *
+ * which is where all calls to search for a specific label will look for said label.
+ */
+
+
+
+#include "../absyntax_utils/absyntax_utils.hh"
+
+
+class search_il_label_c: public search_visitor_c {
+
+  private:
+    search_varfb_instance_type_c *search_varfb_instance_type;
+    symbol_c *search_scope;
+    symbol_c *search_label;
+
+  public:
+    search_il_label_c(symbol_c *search_scope);
+    virtual ~search_il_label_c(void);
+
+    il_instruction_c *find_label(const char *label);
+    il_instruction_c *find_label(symbol_c   *label);
+
+    
+    /****************************************/
+    /* B.2 - Language IL (Instruction List) */
+    /****************************************/
+    /***********************************/
+    /* B 2.1 Instructions and Operands */
+    /***********************************/
+//     void *visit(instruction_list_c *symbol);
+    void *visit(il_instruction_c *symbol);
+//     void *visit(il_simple_operation_c *symbol);
+//     void *visit(il_function_call_c *symbol);
+//     void *visit(il_expression_c *symbol);
+//     void *visit(il_fb_call_c *symbol);
+//     void *visit(il_formal_funct_call_c *symbol);
+//     void *visit(il_operand_list_c *symbol);
+//     void *visit(simple_instr_list_c *symbol);
+//     void *visit(il_simple_instruction_c*symbol);
+//     void *visit(il_param_list_c *symbol);
+//     void *visit(il_param_assignment_c *symbol);
+//     void *visit(il_param_out_assignment_c *symbol);
+
+
+}; // search_il_label_c
+
+
+
+
+
+
+
+