66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
/************************************************************
|
|
yycsusiz.cpp
|
|
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 "clex.h"
|
|
|
|
#ifndef min
|
|
#define min(x, y) ((x) <= (y) ? (x) : (y))
|
|
#endif
|
|
|
|
// the Visual C++ v1.52 compiler generates an error in NT if this isn't present!
|
|
#ifdef _MSC_VER
|
|
#if defined(M_I86HM) && defined(NDEBUG)
|
|
#pragma function(memcpy)
|
|
#endif
|
|
#endif
|
|
|
|
int yylexer::yysetunputsize(int size)
|
|
{
|
|
yyassert(size >= 0);
|
|
if (yyunput_size != size) {
|
|
if (size < yyunputindex) {
|
|
return 0;
|
|
}
|
|
|
|
size_t unputbufcharsize = size * sizeof(int);
|
|
if ((int)(unputbufcharsize / sizeof(int)) != size) {
|
|
return 0; // integer overflow
|
|
}
|
|
|
|
// allocate
|
|
int YYFAR* unputbufptr;
|
|
if (size <= yysunput_size) {
|
|
unputbufptr = yysunputbufptr;
|
|
}
|
|
else {
|
|
unputbufptr = (int YYFAR*)malloc(unputbufcharsize);
|
|
if (unputbufptr == NULL) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// copy
|
|
if (unputbufptr != yyunputbufptr) {
|
|
size_t charsize = yyunput_size * sizeof(int);
|
|
memcpy(unputbufptr, yyunputbufptr, min(unputbufcharsize, charsize));
|
|
}
|
|
|
|
// free
|
|
if (yyunputbufptr != yysunputbufptr) {
|
|
free(yyunputbufptr);
|
|
}
|
|
|
|
// assign
|
|
yyunputbufptr = unputbufptr;
|
|
yyunput_size = size;
|
|
}
|
|
return 1;
|
|
}
|