67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
/************************************************************
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yycpcrea.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 "cyacc.h"
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#include <stdlib.h>
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int yyparser::yycreate(yylexer YYFAR* lexerptr)
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{
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yylexerptr = lexerptr;
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// stack
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if (yysstack_size != 0) {
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size_t stackcharsize;
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size_t attributestackcharsize;
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stackcharsize = yysstack_size * sizeof(yystack_t);
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if ((int)(stackcharsize / sizeof(yystack_t)) != yysstack_size) {
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return 0; // integer overflow
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}
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attributestackcharsize = yysstack_size * yyattribute_size;
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if ((int)(attributestackcharsize / yyattribute_size) != yysstack_size) {
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return 0; // integer overflow
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}
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yysstackptr = (yystack_t YYFAR*)malloc(stackcharsize);
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if (yysstackptr == NULL) {
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return 0;
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}
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yysattributestackptr = malloc(attributestackcharsize);
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if (yysattributestackptr == NULL) {
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free(yysstackptr);
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return 0;
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}
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}
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else {
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yysstackptr = NULL;
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yysattributestackptr = NULL;
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}
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yystack_size = yysstack_size;
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yystackptr = yysstackptr;
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yyattributestackptr = yysattributestackptr;
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// yylval
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yylvalptr = malloc(yyattribute_size);
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if (yylvalptr == NULL) {
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free(yysstackptr);
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free(yysattributestackptr);
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return 0;
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}
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// yyval ($$)
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yyvalptr = malloc(yyattribute_size);
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if (yyvalptr == NULL) {
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free(yysstackptr);
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free(yysattributestackptr);
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free(yylvalptr);
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return 0;
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}
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return 1;
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}
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