--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/absyntax_utils/search_il_operand_type.hh	Thu Jul 02 11:26:25 2009 +0100
@@ -0,0 +1,51 @@
+/*
+ * (c) 2003 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)
+ *
+ */
+
+/* Returns the data type of an il_operand.
+ *
+ * Note that the il_operand may be a variable, in which case
+ * we return the type of the variable instance.
+ * The il_operand may also be a constant, in which case
+ * we return the data type of that constant.
+ *
+ * The variable instance may be a member of a structured variable,
+ * or an element in an array, or any combination of the two.
+ *
+ * The class constructor must be given the search scope
+ * (function, function block or program within which
+ * the possible il_operand variable instance was declared).
+ */
+
+class search_il_operand_type_c {
+
+  private:
+    search_varfb_instance_type_c search_varfb_instance_type;
+    search_constant_type_c search_constant_type;
+
+  public:
+    search_il_operand_type_c(symbol_c *search_scope): search_varfb_instance_type(search_scope) {}
+
+  public:
+    symbol_c *get_type(symbol_c *il_operand);
+};