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