projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0da4719d PK |
1 | static char *sccsid = "@(#)yyerror.c 1.1 (Berkeley) %G%"; |
| 2 | /* Copyright (c) 1979 Regents of the University of California */ | |
| 3 | /* | |
| 4 | * pi - Pascal interpreter code translator | |
| 5 | * | |
| 6 | * Charles Haley, Bill Joy UCB | |
| 7 | * Version 1.2 January 1979 | |
| 8 | * | |
| 9 | * | |
| 10 | * pxp - Pascal execution profiler | |
| 11 | * | |
| 12 | * Bill Joy UCB | |
| 13 | * Version 1.2 January 1979 | |
| 14 | */ | |
| 15 | ||
| 16 | #include "0.h" | |
| 17 | #include "yy.h" | |
| 18 | ||
| 19 | /* | |
| 20 | * Yerror prints an error | |
| 21 | * message and then returns | |
| 22 | * NIL for the tree if needed. | |
| 23 | * The error is flagged on the | |
| 24 | * current line which is printed | |
| 25 | * if the listing is turned off. | |
| 26 | #ifdef PXP | |
| 27 | * | |
| 28 | * As is obvious from the fooling around | |
| 29 | * with fout below, the Pascal system should | |
| 30 | * be changed to use the new library "lS". | |
| 31 | #endif | |
| 32 | */ | |
| 33 | yerror(s, a1, a2, a3, a4, a5) | |
| 34 | char *s; | |
| 35 | { | |
| 36 | #ifdef PI | |
| 37 | char buf[256]; | |
| 38 | #endif | |
| 39 | register int i, j; | |
| 40 | static yySerrs; | |
| 41 | #ifdef PXP | |
| 42 | /* | |
| 43 | int ofout; | |
| 44 | */ | |
| 45 | #endif | |
| 46 | ||
| 47 | if (errpfx == 'w' && opt('w') != 0) | |
| 48 | return; | |
| 49 | #ifdef PXP | |
| 50 | /* | |
| 51 | flush(); | |
| 52 | ofout = fout[0]; | |
| 53 | fout[0] = errout; | |
| 54 | */ | |
| 55 | #endif | |
| 56 | yyResume = 0; | |
| 57 | #ifdef PI | |
| 58 | geterr(s, buf); | |
| 59 | s = buf; | |
| 60 | #endif | |
| 61 | yysync(); | |
| 62 | putc(errpfx, stderr); | |
| 63 | putc(' ', stderr); | |
| 64 | for (i = 3; i < yyecol; i++) | |
| 65 | putc('-', stderr); | |
| 66 | fprintf(stderr, "^--- "); | |
| 67 | /* | |
| 68 | if (yyecol > 60) | |
| 69 | printf("\n\t"); | |
| 70 | */ | |
| 71 | fprintf(stderr, s, a1, a2, a3, a4, a5); | |
| 72 | putc('\n', stderr); | |
| 73 | if (errpfx == 'E') | |
| 74 | #ifdef PI | |
| 75 | eflg++, cgenflg++; | |
| 76 | #endif | |
| 77 | #ifdef PXP | |
| 78 | eflg++; | |
| 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 | /* | |
| 89 | flush(); | |
| 90 | fout[0] = ofout; | |
| 91 | */ | |
| 92 | return (0); | |
| 93 | #endif | |
| 94 | } | |
| 95 | ||
| 96 | /* | |
| 97 | * A bracketing error message | |
| 98 | */ | |
| 99 | brerror(where, what) | |
| 100 | int where; | |
| 101 | char *what; | |
| 102 | { | |
| 103 | ||
| 104 | if (where == 0) { | |
| 105 | line = yyeline; | |
| 106 | setpfx(' '); | |
| 107 | error("End matched %s on line %d", what, where); | |
| 108 | return; | |
| 109 | } | |
| 110 | if (where < 0) | |
| 111 | where = -where; | |
| 112 | yerror("Inserted keyword end matching %s on line %d", what, where); | |
| 113 | } |