--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/absyntax_utils/absyntax_utils.hh	Mon Jun 01 21:08:44 2009 +0200
@@ -0,0 +1,104 @@
+/*
+ * (c) 2009 Mario de Sousa
+ *
+ * Offered to the public under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2 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.
+ *
+ * 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 IL and ST compiler.
+ *
+ * Based on the
+ * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
+ *
+ */
+
+
+/*
+ * This is the main stage 3a file.
+ *
+ * In stage 3a some helpful symbol tables are instanciated and populated.
+ * These symbol tables wll then be used by stage3b and atage4 code generators.
+ */
+
+
+
+
+#ifndef _SEARCH_UTILS_HH
+#define _SEARCH_UTILS_HH
+
+// #include <stdio.h>  /* required for NULL */
+#include "../util/symtable.hh"
+#include "../util/dsymtable.hh"
+#include "../absyntax/absyntax.hh"
+#include "../absyntax/visitor.hh"
+
+
+
+/* returns 0 if the names are equal!! Case is ignored. */
+int compare_identifiers(symbol_c *ident1, symbol_c *ident2);
+
+/* A symbol table with all globally declared functions... */
+extern function_declaration_c null_symbol1;
+extern dsymtable_c<function_declaration_c *, &null_symbol1> function_symtable;
+
+/* A symbol table with all globally declared functions block types... */
+extern function_block_declaration_c null_symbol2;
+extern symtable_c<function_block_declaration_c *, &null_symbol2> function_block_type_symtable;
+
+/* A symbol table with all globally declared program types... */
+extern program_declaration_c null_symbol3;
+extern symtable_c<program_declaration_c *, &null_symbol3> program_type_symtable;
+
+/* A symbol table with all user declared type definitions... */
+/* Note that function block types and program types have their
+ * own symbol tables, so do not get placed in this symbol table!
+ */
+extern symbol_c null_symbol4;
+extern symtable_c<symbol_c *, &null_symbol4> type_symtable;
+
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+#include "spec_init_separator.hh"
+#include "function_param_iterator.hh"
+#include "function_call_iterator.hh"
+#include "function_call_param_iterator.hh"
+#include "type_initial_value.hh"
+#include "search_fb_instance_decl.hh"
+#include "search_fb_typedecl.hh"
+#include "search_base_type.hh"
+#include "search_var_instance_decl.hh"
+#include "decompose_var_instance_name.hh"
+#include "search_varfb_instance_type.hh"
+#include "search_constant_type.hh"
+#include "search_expression_type.hh"
+#include "get_function_type.h"
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+
+
+
+void absyntax_utils_init(symbol_c *tree_root);
+
+
+#endif /* _SEARCH_UTILS_HH */