Utils/Parser Generator/SOURCE/yyssssiz.c

@@ -0,0 +1,86 @@
+/************************************************************
+yyssssiz.c
+This file can be freely modified for the generation of
+custom code.
+
+Copyright (c) 1999 Bumble-Bee Software Ltd.
+************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include "yacc.h"
+
+#ifdef YYPROTOTYPE
+int YYCDECL yysetstacksize(int size)
+#else
+int YYCDECL yysetstacksize(size)
+int size;
+#endif
+{
+	yyassert(size >= 0);
+	if (yystack_size != size) {
+		yystack_t YYFAR *stackptr;
+#if defined(__STDC__) || defined(__cplusplus)
+		void YYFAR *attributestackptr;
+#else
+		char YYFAR *attributestackptr;
+#endif
+		size_t stackcharsize;
+		size_t attributestackcharsize;
+
+		if (size <= yytop) {
+			return 0;
+		}
+
+		stackcharsize = size * sizeof(yystack_t);
+		if ((int) (stackcharsize / sizeof(yystack_t)) != size) {
+			return 0;		/* integer overflow */
+		}
+		attributestackcharsize = size * yyattribute_size;
+		if ((int) (attributestackcharsize / yyattribute_size) != size) {
+			return 0;		/* integer overflow */
+		}
+
+		/* allocate */
+		if (size <= yysstack_size) {
+			stackptr = yysstackptr;
+			attributestackptr = yysattributestackptr;
+		}
+		else {
+			stackptr = (yystack_t YYFAR *) malloc(stackcharsize);
+			if (stackptr == NULL) {
+				return 0;
+			}
+			attributestackptr = malloc(attributestackcharsize);
+			if (attributestackptr == NULL) {
+				free(stackptr);		/* clean up */
+				return 0;
+			}
+		}
+
+		/* copy */
+		if (stackptr != yystackptr) {
+			size_t charsize = yystack_size * sizeof(yystack_t);
+			memcpy(stackptr, yystackptr, min(stackcharsize, charsize));
+		}
+		if (attributestackptr != yyattributestackptr) {
+			size_t charsize = yystack_size * yyattribute_size;
+			memcpy(attributestackptr, yyattributestackptr, min(attributestackcharsize,
+				charsize));
+		}
+
+		/* free */
+		if (yystackptr != yysstackptr) {
+			free(yystackptr);
+		}
+		if (yyattributestackptr != yysattributestackptr) {
+			free(yyattributestackptr);
+		}
+
+		/* assign */
+		yystackptr = stackptr;
+		yyattributestackptr = attributestackptr;
+		yystack_size = size;
+	}
+	return 1;
+}