--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/absyntax/absyntax.cc	Wed Jan 31 15:32:38 2007 +0100
@@ -0,0 +1,159 @@
+/*
+ * (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)
+ *
+ */
+
+/*
+ * Definition of the Abstract Syntax data structure components
+ */
+
+#include <stdio.h>
+#include <stdlib.h>	/* required for exit() */
+#include <string.h>
+
+#include "absyntax.hh"
+//#include "../stage1_2/iec.hh" /* required for BOGUS_TOKEN_ID, etc... */
+#include "visitor.hh"
+
+#define ABORT(str) {printf("ERROR: %s\n", str); exit(0);}
+
+
+
+symbol_c *tree_root = NULL;
+
+
+
+
+/* The base class of all symbols */
+symbol_c::symbol_c(void) {
+  lineno = 0;
+}
+
+symbol_c::symbol_c(long lineno) {
+  this->lineno = lineno;
+}
+
+
+
+token_c::token_c(const char *value) {
+  this->value = value;
+//  printf("New token: %s\n", value);
+}
+
+
+
+
+
+
+list_c::list_c(void) {
+  n = 0;
+  elements = NULL;
+}
+
+list_c::list_c(symbol_c *elem) {
+  n = 0;
+  elements = NULL;
+  add_element(elem);
+}
+
+/* insert a new element */
+void list_c::add_element(symbol_c *elem) {
+//printf("list_c::add_element()\n");
+  n++;
+  elements = (symbol_c **)realloc(elements, n * sizeof(symbol_c *));
+  if (elements == NULL)
+    ABORT("Out of memory");
+  elements[n - 1] = elem;
+}
+
+
+
+
+
+#define SYM_LIST(class_name_c)							\
+void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}
+
+#define SYM_TOKEN(class_name_c)							\
+class_name_c::class_name_c(const char *value): token_c(value) {}			\
+void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}
+
+#define SYM_REF0(class_name_c)			\
+void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}
+
+
+#define SYM_REF2(class_name_c, ref1, ref2)	\
+class_name_c::class_name_c(symbol_c *ref1,	\
+			   symbol_c *ref2) {	\
+  this->ref1 = ref1;				\
+  this->ref2 = ref2;				\
+}						\
+void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}
+
+
+#define SYM_REF4(class_name_c, ref1, ref2, ref3, ref4)	\
+class_name_c::class_name_c(symbol_c *ref1,		\
+			   symbol_c *ref2,		\
+			   symbol_c *ref3,		\
+			   symbol_c *ref4) {		\
+  this->ref1 = ref1;					\
+  this->ref2 = ref2;					\
+  this->ref3 = ref3;					\
+  this->ref4 = ref4;					\
+}							\
+void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}
+
+
+#define SYM_REF6(class_name_c, ref1, ref2, ref3, ref4, ref5, ref6)	\
+class_name_c::class_name_c(symbol_c *ref1,				\
+			   symbol_c *ref2,				\
+			   symbol_c *ref3,				\
+			   symbol_c *ref4,				\
+			   symbol_c *ref5,				\
+			   symbol_c *ref6) {				\
+  this->ref1 = ref1;						\
+  this->ref2 = ref2;						\
+  this->ref3 = ref3;						\
+  this->ref4 = ref4;						\
+  this->ref5 = ref5;						\
+  this->ref6 = ref6;						\
+}								\
+void *class_name_c::accept(visitor_c &visitor) {return visitor.visit(this);}
+
+
+
+#include "absyntax.def"
+
+
+
+
+#undef SYM_LIST
+#undef SYM_TOKEN
+#undef SYM_TOKEN
+#undef SYM_REF0
+#undef SYM_REF2
+#undef SYM_REF4
+#undef SYM_REF6
+
+
+
+
+