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Annotation of 43BSDReno/pgrm/pascal/src/yyerror.c, revision 1.1.1.1

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  5.2 (Berkeley) 5/6/86";
                      9: #endif not lint
                     10: 
                     11: #include "whoami.h"
                     12: #include "0.h"
                     13: #include "tree_ty.h"   /* must be included for yy.h */
                     14: #include "yy.h"
                     15: 
                     16: /*
                     17:  * Yerror prints an error
                     18:  * message and then returns
                     19:  * NIL for the tree if needed.
                     20:  * The error is flagged on the
                     21:  * current line which is printed
                     22:  * if the listing is turned off.
                     23: #ifdef PXP
                     24:  *
                     25:  * As is obvious from the fooling around
                     26:  * with fout below, the Pascal system should
                     27:  * be changed to use the new library "lS".
                     28: #endif
                     29:  */
                     30: /*VARARGS*/
                     31: yerror(s, a1, a2, a3, a4, a5)
                     32:        char *s;
                     33:        char *a1, *a2, *a3, *a4, *a5;
                     34: {
                     35: #ifdef PI
                     36:        char buf[256];
                     37: #endif
                     38:        register int i;
                     39:        static yySerrs;
                     40: #ifdef PXP
                     41:        int ofout;
                     42: #endif
                     43: 
                     44:        if (errpfx == 'w' && opt('w') != 0) {
                     45:                errpfx = 'E';
                     46:                return;
                     47:        }
                     48:        /* no continuations allowed here */
                     49:        if (errpfx == ' ')
                     50:                errpfx = 'E';
                     51: #ifdef PXP
                     52:        flush();
                     53:        ofout = fout[0];
                     54:        fout[0] = errout;
                     55: #endif
                     56:        yyResume = 0;
                     57: #ifdef PI
                     58:        geterr((int) s, buf);
                     59:        s = buf;
                     60: #endif
                     61:        yysync();
                     62:        pchr(errpfx);
                     63:        pchr(' ');
                     64:        for (i = 3; i < yyecol; i++)
                     65:                pchr('-');
                     66:        printf("^--- ");
                     67: /*
                     68:        if (yyecol > 60)
                     69:                printf("\n\t");
                     70: */
                     71:        printf(s, a1, a2, a3, a4, a5);
                     72:        pchr('\n');
                     73:        if (errpfx == 'E')
                     74: #ifdef PI
                     75:                eflg = TRUE, codeoff();
                     76: #endif
                     77: #ifdef PXP
                     78:                eflg = TRUE;
                     79: #endif
                     80:        errpfx = 'E';
                     81:        yySerrs++;
                     82:        if (yySerrs >= MAXSYNERR) {
                     83:                yySerrs = 0;
                     84:                yerror("Too many syntax errors - QUIT");
                     85:                pexit(ERRS);
                     86:        }
                     87: #ifdef PXP
                     88:        flush();
                     89:        fout[0] = ofout;
                     90:        return (0);
                     91: #endif
                     92: }
                     93: 
                     94: /*
                     95:  * A bracketing error message
                     96:  */
                     97: brerror(where, what)
                     98:        int where;
                     99:        char *what;
                    100: {
                    101: 
                    102:        if (where == 0) {
                    103:                line = yyeline;
                    104:                setpfx(' ');
                    105:                error("End matched %s on line %d", what, (char *) where);
                    106:                return;
                    107:        }
                    108:        if (where < 0)
                    109:                where = -where;
                    110:        yerror("Inserted keyword end matching %s on line %d", what, (char *) where);
                    111: }

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