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Annotation of 40BSD/cmd/pxp/error.c, revision 1.1

1.1     ! root        1: /* Copyright (c) 1979 Regents of the University of California */
        !             2: /*
        !             3:  * pi - Pascal interpreter code translator
        !             4:  *
        !             5:  * Charles Haley, Bill Joy UCB
        !             6:  * Version 1.2 January 1979
        !             7:  *
        !             8:  *
        !             9:  * pxp - Pascal execution profiler
        !            10:  *
        !            11:  * Bill Joy UCB
        !            12:  * Version 1.2 January 1979
        !            13:  */
        !            14: 
        !            15: #include "0.h"
        !            16: #include "yy.h"
        !            17: 
        !            18: #ifdef PXP
        !            19: extern int yyline;
        !            20: extern char errout;
        !            21: #endif
        !            22: 
        !            23: char   errpfx  'E';
        !            24: extern int yyline;
        !            25: /*
        !            26:  * Panic is called when impossible
        !            27:  * (supposedly, anyways) situations
        !            28:  * are encountered.
        !            29: #ifdef PI
        !            30:  * Panic messages should be short
        !            31:  * as they do not go to the message
        !            32:  * file.
        !            33: #endif
        !            34:  */
        !            35: panic(s)
        !            36:        char *s;
        !            37: {
        !            38: 
        !            39: #ifdef DEBUG
        !            40:        fprintf(stderr, "Snark (%s) line=%d yyline=%d\n", s, line, yyline);
        !            41: #endif
        !            42: #ifdef PXP
        !            43:        Perror( "Snark in pxp", s);
        !            44: #endif
        !            45: #ifdef PI
        !            46:        Perror( "Snark in pi", s);
        !            47: #endif
        !            48:        pexit(DIED);
        !            49: }
        !            50: 
        !            51: extern char *errfile;
        !            52: /*
        !            53:  * Error is called for
        !            54:  * semantic errors and
        !            55:  * prints the error and
        !            56:  * a line number.
        !            57:  */
        !            58: error(a1, a2, a3, a4)
        !            59: {
        !            60: #ifdef PI
        !            61:        char buf[256];
        !            62:        register int i;
        !            63: #endif
        !            64: #ifdef PXP
        !            65: /*
        !            66:        int ofout;
        !            67: */
        !            68: #endif
        !            69: 
        !            70:        if (errpfx == 'w' && opt('w') != 0)
        !            71:                return;
        !            72: #ifdef PXP
        !            73: /*
        !            74:        flush();
        !            75:        ofout = fout[0];
        !            76:        fout[0] = errout;
        !            77: */
        !            78: #endif
        !            79: #ifdef PI
        !            80:        Enocascade = 0;
        !            81:        geterr(a1, buf);
        !            82:        a1 = buf;
        !            83: #endif
        !            84:        if (line < 0)
        !            85:                line = -line;
        !            86:        yySsync();
        !            87:        yysetfile(filename);
        !            88: #ifdef PI
        !            89:        if (errpfx == ' ') {
        !            90:                printf("  ");
        !            91:                for (i = line; i >= 10; i =/ 10)
        !            92:                        putchar(' ');
        !            93:                printf("... ");
        !            94:        } else if (Enoline)
        !            95:                printf("  %c - ", errpfx);
        !            96:        else
        !            97: #endif
        !            98:                fprintf(stderr, "%c %d - ", errpfx, line);
        !            99:        fprintf(stderr, a1, a2, a3, a4);
        !           100:        if (errpfx == 'E')
        !           101: #ifdef PI
        !           102:                eflg++, cgenflg++;
        !           103: #endif
        !           104: #ifdef PXP
        !           105:                eflg++;
        !           106: #endif
        !           107:        errpfx = 'E';
        !           108: #ifdef PI
        !           109:        if (Eholdnl)
        !           110:                Eholdnl = 0;
        !           111:        else
        !           112: #endif
        !           113:                putc('\n', stderr);
        !           114: #ifdef PXP
        !           115: /*
        !           116:        flush();
        !           117:        fout[0] = ofout;
        !           118: */
        !           119: #endif
        !           120: }
        !           121: 
        !           122: #ifdef PI
        !           123: cerror(a1, a2, a3, a4)
        !           124: {
        !           125: 
        !           126:        if (Enocascade)
        !           127:                return;
        !           128:        setpfx(' ');
        !           129:        error(a1, a2, a3, a4);
        !           130: }
        !           131: #endif

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