SBSPSS/Utils/Parser Generator/SOURCE/yycpcrea.cpp

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2000-12-08 21:40:33 +01:00
/************************************************************
yycpcrea.cpp
This file can be freely modified for the generation of
custom code.
Copyright (c) 1999 Bumble-Bee Software Ltd.
************************************************************/
#include "cyacc.h"
#include <stdlib.h>
int yyparser::yycreate(yylexer YYFAR* lexerptr)
{
yylexerptr = lexerptr;
// stack
if (yysstack_size != 0) {
size_t stackcharsize;
size_t attributestackcharsize;
stackcharsize = yysstack_size * sizeof(yystack_t);
if ((int)(stackcharsize / sizeof(yystack_t)) != yysstack_size) {
return 0; // integer overflow
}
attributestackcharsize = yysstack_size * yyattribute_size;
if ((int)(attributestackcharsize / yyattribute_size) != yysstack_size) {
return 0; // integer overflow
}
yysstackptr = (yystack_t YYFAR*)malloc(stackcharsize);
if (yysstackptr == NULL) {
return 0;
}
yysattributestackptr = malloc(attributestackcharsize);
if (yysattributestackptr == NULL) {
free(yysstackptr);
return 0;
}
}
else {
yysstackptr = NULL;
yysattributestackptr = NULL;
}
yystack_size = yysstack_size;
yystackptr = yysstackptr;
yyattributestackptr = yysattributestackptr;
// yylval
yylvalptr = malloc(yyattribute_size);
if (yylvalptr == NULL) {
free(yysstackptr);
free(yysattributestackptr);
return 0;
}
// yyval ($$)
yyvalptr = malloc(yyattribute_size);
if (yyvalptr == NULL) {
free(yysstackptr);
free(yysattributestackptr);
free(yylvalptr);
return 0;
}
return 1;
}