[unix-history] / usr / src / libln / yyless.c

yyless(x)
{
extern char yytext[];
register char *lastch, *ptr;
extern int yyleng;
extern int yyprevious;
lastch = yytext+yyleng;
if (x>=0 && x <= yyleng)
	ptr = x + yytext;
else
	ptr = x;
while (lastch > ptr)
	yyunput(*--lastch);
*lastch = 0;
if (ptr >yytext)
	yyprevious = *--lastch;
yyleng = ptr-yytext;
}
Commit	Line	Data
2c0d4653 TL	1	yyless(x)
	2	{
	3	extern char yytext[];
	4	register char lastch, ptr;
	5	extern int yyleng;
	6	extern int yyprevious;
	7	lastch = yytext+yyleng;
	8	if (x>=0 && x <= yyleng)
	9	ptr = x + yytext;
	10	else
	11	ptr = x;
	12	while (lastch > ptr)
	13	yyunput(*--lastch);
	14	*lastch = 0;
	15	if (ptr >yytext)
	16	yyprevious = *--lastch;
	17	yyleng = ptr-yytext;
	18	}