65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
|
/************************************************************
|
||
|
|
yymsusiz.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 "mlex.h"
|
||
|
|
|
||
|
|
#ifdef YYPROTOTYPE
|
||
|
|
int YYCDECL yymsetunputsize(yymlex_t YYFAR *yy, int size)
|
||
|
|
#else
|
||
|
|
int YYCDECL yymsetunputsize(yy, size)
|
||
|
|
yymlex_t YYFAR *yy;
|
||
|
|
int size;
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
yyassert(yy != NULL);
|
||
|
|
yyassert(size >= 0);
|
||
|
|
if (yy->yymunput_size != size) {
|
||
|
|
int YYFAR *unputbufptr;
|
||
|
|
|
||
|
|
size_t unputbufcharsize;
|
||
|
|
|
||
|
|
if (size < yy->yymunputindex) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
unputbufcharsize = size * sizeof(int);
|
||
|
|
if ((int) (unputbufcharsize / sizeof(int)) != size) {
|
||
|
|
return 0; /* integer overflow */
|
||
|
|
}
|
||
|
|
|
||
|
|
/* allocate */
|
||
|
|
if (size <= yy->yymsunput_size) {
|
||
|
|
unputbufptr = yy->yymsunputbufptr;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
unputbufptr = (int YYFAR *) malloc(unputbufcharsize);
|
||
|
|
if (unputbufptr == NULL) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* copy */
|
||
|
|
if (unputbufptr != yy->yymunputbufptr) {
|
||
|
|
size_t charsize = yy->yymunput_size * sizeof(int);
|
||
|
|
memcpy(unputbufptr, yy->yymunputbufptr, min(unputbufcharsize, charsize));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* free */
|
||
|
|
if (yy->yymunputbufptr != yy->yymsunputbufptr) {
|
||
|
|
free(yy->yymunputbufptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* assign */
|
||
|
|
yy->yymunputbufptr = unputbufptr;
|
||
|
|
yy->yymunput_size = size;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|