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252367af DF |
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) %G%"; | |
9 | #endif not lint | |
10 | ||
0da4719d PK |
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 | ||
84ef74c0 | 24 | #include "whoami.h" |
0da4719d PK |
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 | } |