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#include	<u.h>
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#include	<libc.h>
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#include	<stdio.h>
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extern	FILE*	yyout;
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extern	FILE*	yyin;
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extern	int	yyprevious, *yyfnd;
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extern	char	yyextra[];
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extern	char	yytext[];
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extern	int	yyleng;
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extern
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struct
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{
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	int *yyaa, *yybb;
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	int *yystops;
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} *yylstate [], **yylsp, **yyolsp;
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int	yyback(int *p, int m);
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int	yyinput(void);
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void	yyoutput(int c);
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void	yyunput(int c);
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int
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yyracc(int m)
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{
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	yyolsp = yylsp;
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	if(yyextra[m]) {
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		while(yyback((*yylsp)->yystops, -m) != 1 && yylsp > yylstate) {
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			yylsp--;
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			yyunput(yytext[--yyleng]);
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		}
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	}
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	yyprevious = yytext[yyleng-1];
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	yytext[yyleng] = 0;
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	return m;
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}
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int
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yyreject(void)
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{
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	for(; yylsp < yyolsp; yylsp++)
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		yytext[yyleng++] = yyinput();
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	if(*yyfnd > 0)
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		return yyracc(*yyfnd++);
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	while(yylsp-- > yylstate) {
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		yyunput(yytext[yyleng-1]);
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		yytext[--yyleng] = 0;
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		if(*yylsp != 0 && (yyfnd = (*yylsp)->yystops) && *yyfnd > 0)
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			return yyracc(*yyfnd++);
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	}
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	if(yytext[0] == 0)
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		return 0;
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	yyoutput(yyprevious = yyinput());
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	yyleng = 0;
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	return -1;
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}