Utils/Parser Generator/SOURCE/yyclcrea.cpp

@@ -0,0 +1,82 @@
+/************************************************************
+yyclcrea.cpp
+This file can be freely modified for the generation of
+custom code.
+
+Copyright (c) 1999 Bumble-Bee Software Ltd.
+************************************************************/
+
+#include "clex.h"
+#include <stdlib.h>
+
+int yylexer::yycreate(yyparser YYFAR* parserptr)
+{
+	yyparserptr = parserptr;
+
+	size_t textcharsize;
+	size_t statebufcharsize;
+	size_t unputbufcharsize;
+
+	// get sizes first
+	textcharsize = yystext_size + 1;	// include the '\0'
+	if (textcharsize <= (size_t)yystext_size) {
+		return 0;		// integer overflow
+	}
+	if (yystext_size != 0) {
+		statebufcharsize = yystext_size * sizeof(int);
+		if ((int)(statebufcharsize / sizeof(int)) != yystext_size) {
+			return 0;		// integer overflow
+		}
+	}
+	else {
+		statebufcharsize = 0;
+	}
+	if (yysunput_size != 0) {
+		unputbufcharsize = yysunput_size * sizeof(int);
+		if ((int)(unputbufcharsize / sizeof(int)) != yysunput_size) {
+			return 0;		// integer overflow
+		}
+	}
+	else {
+		unputbufcharsize = 0;
+	}
+
+	// allocate the memory if necessary
+	yystext = (char YYFAR*)malloc(textcharsize);
+	if (yystext == NULL) {
+		return 0;
+	}
+	if (statebufcharsize != 0) {
+		yysstatebuf = (int YYFAR*)malloc(statebufcharsize);
+		if (yysstatebuf == NULL) {
+			free(yystext);
+			return 0;
+		}
+	}
+	else {
+		yysstatebuf = NULL;
+	}
+	if (unputbufcharsize != 0) {
+		yysunputbufptr = (int YYFAR*)malloc(unputbufcharsize);
+		if (yysunputbufptr == NULL) {
+			free(yystext);
+			free(yysstatebuf);
+			return 0;
+		}
+	}
+	else {
+		yysunputbufptr = NULL;
+	}
+
+	// assign any other variables
+	yytext_size = yystext_size;
+	yytext = yystext;
+	yystatebuf = yysstatebuf;
+	yyunput_size = yysunput_size;
+	yyunputbufptr = yysunputbufptr;
+
+	// makes sure we are ready to go
+	yyreset();
+
+	return 1;
+}