63 lines
1.2 KiB
C++
63 lines
1.2 KiB
C++
|
/************************************************************
|
||
|
|
yycunput.cpp
|
||
|
|
This file can be freely modified for the generation of
|
||
|
|
custom code.
|
||
|
|
|
||
|
|
Copyright (c) 1999 Bumble-Bee Software Ltd.
|
||
|
|
************************************************************/
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <ctype.h>
|
||
|
|
#include <limits.h>
|
||
|
|
#include "clex.h"
|
||
|
|
|
||
|
|
void yylexer::yyunput(int ch)
|
||
|
|
{
|
||
|
|
yyassert(ch >= 0 && ch <= UCHAR_MAX || ch == EOF);
|
||
|
|
yyassert(yyunputindex >= 0 && yyunputindex <= yyunput_size);
|
||
|
|
|
||
|
|
// check unput buffer size
|
||
|
|
if (yyunputindex == yyunput_size) {
|
||
|
|
do {
|
||
|
|
if (yyunputgrow) {
|
||
|
|
if (yyunput_size != 0) {
|
||
|
|
int size = yyunput_size * 2;
|
||
|
|
if (size / 2 == yyunput_size) { // overflow check
|
||
|
|
if (yysetunputsize(size)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if (yysetunputsize(100)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
yyunputoverflow();
|
||
|
|
exit(EXIT_FAILURE);
|
||
|
|
}
|
||
|
|
while (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
yyunputbufptr[yyunputindex++] = ch;
|
||
|
|
|
||
|
|
// check line number
|
||
|
|
if (ch == '\n') {
|
||
|
|
yylineno--;
|
||
|
|
}
|
||
|
|
|
||
|
|
// debugging
|
||
|
|
#ifdef YYDEBUG
|
||
|
|
if (::yydebug || yydebug) {
|
||
|
|
char string[128];
|
||
|
|
|
||
|
|
sprintf(string, "%p: unput: \'", (void*)this);
|
||
|
|
yydebugoutput(string);
|
||
|
|
yydebugoutput(ch);
|
||
|
|
yydebugoutput("\'\n");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|