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1.1 ! root 1: /* @(#)reject.c 4.2 12/21/87 */ ! 2: ! 3: # include <stdio.h> ! 4: extern FILE *yyout, *yyin; ! 5: extern int yyprevious , *yyfnd; ! 6: extern char yyextra[]; ! 7: extern char yytext[]; ! 8: extern int yyleng; ! 9: extern struct {int *yyaa, *yybb; int *yystops;} *yylstate [], **yylsp, **yyolsp; ! 10: ! 11: yyreject () ! 12: { ! 13: for( ; yylsp < yyolsp; yylsp++) ! 14: yytext[yyleng++] = yyinput(); ! 15: if (*yyfnd > 0) ! 16: return(yyracc(*yyfnd++)); ! 17: while (yylsp-- > yylstate) ! 18: { ! 19: yyunput(yytext[yyleng-1]); ! 20: yytext[--yyleng] = 0; ! 21: if (*yylsp != 0 && (yyfnd= (*yylsp)->yystops) && *yyfnd > 0) ! 22: return(yyracc(*yyfnd++)); ! 23: } ! 24: if (yytext[0] == 0) ! 25: return(0); ! 26: yyoutput(yyprevious = yyinput()); ! 27: yyleng=0; ! 28: return(-1); ! 29: } ! 30: yyracc(m) ! 31: { ! 32: yyolsp = yylsp; ! 33: if (yyextra[m]) ! 34: { ! 35: while (yyback((*yylsp)->yystops, -m) != 1 && yylsp>yylstate) ! 36: { ! 37: yylsp--; ! 38: yyunput(yytext[--yyleng]); ! 39: } ! 40: } ! 41: yyprevious = yytext[yyleng-1]; ! 42: yytext[yyleng] = 0; ! 43: return(m); ! 44: }
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