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Annotation of 43BSD/ucb/pascal/pxp/yyerror.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)yyerror.c  5.1 (Berkeley) 6/5/85";
        !             9: #endif not lint
        !            10: 
        !            11: /*
        !            12:  * pi - Pascal interpreter code translator
        !            13:  *
        !            14:  * Charles Haley, Bill Joy UCB
        !            15:  * Version 1.2 January 1979
        !            16:  *
        !            17:  *
        !            18:  * pxp - Pascal execution profiler
        !            19:  *
        !            20:  * Bill Joy UCB
        !            21:  * Version 1.2 January 1979
        !            22:  */
        !            23: 
        !            24: #include "whoami.h"
        !            25: #include "0.h"
        !            26: #include "yy.h"
        !            27: 
        !            28: /*
        !            29:  * Yerror prints an error
        !            30:  * message and then returns
        !            31:  * NIL for the tree if needed.
        !            32:  * The error is flagged on the
        !            33:  * current line which is printed
        !            34:  * if the listing is turned off.
        !            35: #ifdef PXP
        !            36:  *
        !            37:  * As is obvious from the fooling around
        !            38:  * with fout below, the Pascal system should
        !            39:  * be changed to use the new library "lS".
        !            40: #endif
        !            41:  */
        !            42: yerror(s, a1, a2, a3, a4, a5)
        !            43:        char *s;
        !            44: {
        !            45: #ifdef PI
        !            46:        char buf[256];
        !            47: #endif
        !            48:        register int i, j;
        !            49:        static yySerrs;
        !            50: #ifdef PXP
        !            51: /*
        !            52:        int ofout;
        !            53: */
        !            54: #endif
        !            55: 
        !            56:        if (errpfx == 'w' && opt('w') != 0)
        !            57:                return;
        !            58: #ifdef PXP
        !            59: /*
        !            60:        flush();
        !            61:        ofout = fout[0];
        !            62:        fout[0] = errout;
        !            63: */
        !            64: #endif
        !            65:        yyResume = 0;
        !            66: #ifdef PI
        !            67:        geterr(s, buf);
        !            68:        s = buf;
        !            69: #endif
        !            70:        yysync();
        !            71:        putc(errpfx, stderr);
        !            72:        putc(' ', stderr);
        !            73:        for (i = 3; i < yyecol; i++)
        !            74:                putc('-', stderr);
        !            75:        fprintf(stderr, "^--- ");
        !            76: /*
        !            77:        if (yyecol > 60)
        !            78:                printf("\n\t");
        !            79: */
        !            80:        fprintf(stderr, s, a1, a2, a3, a4, a5);
        !            81:        putc('\n', stderr);
        !            82:        if (errpfx == 'E')
        !            83: #ifdef PI
        !            84:                eflg++, cgenflg++;
        !            85: #endif
        !            86: #ifdef PXP
        !            87:                eflg++;
        !            88: #endif
        !            89:        errpfx = 'E';
        !            90:        yySerrs++;
        !            91:        if (yySerrs >= MAXSYNERR) {
        !            92:                yySerrs = 0;
        !            93:                yerror("Too many syntax errors - QUIT");
        !            94:                pexit(ERRS);
        !            95:        }
        !            96: #ifdef PXP
        !            97: /*
        !            98:        flush();
        !            99:        fout[0] = ofout;
        !           100: */
        !           101:        return (0);
        !           102: #endif
        !           103: }
        !           104: 
        !           105: /*
        !           106:  * A bracketing error message
        !           107:  */
        !           108: brerror(where, what)
        !           109:        int where;
        !           110:        char *what;
        !           111: {
        !           112: 
        !           113:        if (where == 0) {
        !           114:                line = yyeline;
        !           115:                setpfx(' ');
        !           116:                error("End matched %s on line %d", what, where);
        !           117:                return;
        !           118:        }
        !           119:        if (where < 0)
        !           120:                where = -where;
        !           121:        yerror("Inserted keyword end matching %s on line %d", what, where);
        !           122: }

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