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599cee73 |
1 | #!/usr/bin/perl |
2 | |
0ca4541c |
3 | |
4 | $VERSION = '1.00'; |
b75c8c73 |
5 | |
73f0cc2d |
6 | BEGIN { |
7 | push @INC, './lib'; |
8 | } |
599cee73 |
9 | use strict ; |
10 | |
11 | sub DEFAULT_ON () { 1 } |
12 | sub DEFAULT_OFF () { 2 } |
13 | |
14 | my $tree = { |
d3a7d8c7 |
15 | |
16 | 'all' => { |
e476b1b5 |
17 | 'io' => { 'pipe' => DEFAULT_OFF, |
599cee73 |
18 | 'unopened' => DEFAULT_OFF, |
19 | 'closed' => DEFAULT_OFF, |
20 | 'newline' => DEFAULT_OFF, |
21 | 'exec' => DEFAULT_OFF, |
99ef548b |
22 | 'layer' => DEFAULT_OFF, |
599cee73 |
23 | }, |
e476b1b5 |
24 | 'syntax' => { 'ambiguous' => DEFAULT_OFF, |
599cee73 |
25 | 'semicolon' => DEFAULT_OFF, |
e476b1b5 |
26 | 'precedence' => DEFAULT_OFF, |
4673fc70 |
27 | 'bareword' => DEFAULT_OFF, |
599cee73 |
28 | 'reserved' => DEFAULT_OFF, |
627300f0 |
29 | 'digit' => DEFAULT_OFF, |
599cee73 |
30 | 'parenthesis' => DEFAULT_OFF, |
599cee73 |
31 | 'printf' => DEFAULT_OFF, |
e476b1b5 |
32 | 'prototype' => DEFAULT_OFF, |
33 | 'qw' => DEFAULT_OFF, |
599cee73 |
34 | }, |
e476b1b5 |
35 | 'severe' => { 'inplace' => DEFAULT_ON, |
0453d815 |
36 | 'internal' => DEFAULT_ON, |
37 | 'debugging' => DEFAULT_ON, |
e476b1b5 |
38 | 'malloc' => DEFAULT_ON, |
0453d815 |
39 | }, |
12bcd1a6 |
40 | 'deprecated' => DEFAULT_OFF, |
e476b1b5 |
41 | 'void' => DEFAULT_OFF, |
42 | 'recursion' => DEFAULT_OFF, |
43 | 'redefine' => DEFAULT_OFF, |
44 | 'numeric' => DEFAULT_OFF, |
45 | 'uninitialized' => DEFAULT_OFF, |
46 | 'once' => DEFAULT_OFF, |
47 | 'misc' => DEFAULT_OFF, |
48 | 'regexp' => DEFAULT_OFF, |
49 | 'glob' => DEFAULT_OFF, |
50 | 'y2k' => DEFAULT_OFF, |
e476b1b5 |
51 | 'untie' => DEFAULT_OFF, |
52 | 'substr' => DEFAULT_OFF, |
53 | 'taint' => DEFAULT_OFF, |
54 | 'signal' => DEFAULT_OFF, |
55 | 'closure' => DEFAULT_OFF, |
56 | 'overflow' => DEFAULT_OFF, |
57 | 'portable' => DEFAULT_OFF, |
58 | 'utf8' => DEFAULT_OFF, |
59 | 'exiting' => DEFAULT_OFF, |
60 | 'pack' => DEFAULT_OFF, |
61 | 'unpack' => DEFAULT_OFF, |
0453d815 |
62 | #'default' => DEFAULT_ON, |
d3a7d8c7 |
63 | } |
64 | } ; |
599cee73 |
65 | |
66 | |
67 | ########################################################################### |
68 | sub tab { |
69 | my($l, $t) = @_; |
70 | $t .= "\t" x ($l - (length($t) + 1) / 8); |
71 | $t; |
72 | } |
73 | |
74 | ########################################################################### |
75 | |
76 | my %list ; |
77 | my %Value ; |
d3a7d8c7 |
78 | my $index ; |
599cee73 |
79 | |
80 | sub walk |
81 | { |
82 | my $tre = shift ; |
83 | my @list = () ; |
84 | my ($k, $v) ; |
85 | |
95dfd3ab |
86 | foreach $k (sort keys %$tre) { |
87 | $v = $tre->{$k}; |
599cee73 |
88 | die "duplicate key $k\n" if defined $list{$k} ; |
89 | $Value{$index} = uc $k ; |
90 | push @{ $list{$k} }, $index ++ ; |
91 | if (ref $v) |
92 | { push (@{ $list{$k} }, walk ($v)) } |
93 | push @list, @{ $list{$k} } ; |
94 | } |
95 | |
96 | return @list ; |
599cee73 |
97 | } |
98 | |
99 | ########################################################################### |
100 | |
101 | sub mkRange |
102 | { |
103 | my @a = @_ ; |
104 | my @out = @a ; |
105 | my $i ; |
106 | |
107 | |
108 | for ($i = 1 ; $i < @a; ++ $i) { |
0ca4541c |
109 | $out[$i] = ".." |
599cee73 |
110 | if $a[$i] == $a[$i - 1] + 1 && $a[$i] + 1 == $a[$i + 1] ; |
111 | } |
112 | |
113 | my $out = join(",",@out); |
114 | |
115 | $out =~ s/,(\.\.,)+/../g ; |
116 | return $out; |
117 | } |
118 | |
119 | ########################################################################### |
e476b1b5 |
120 | sub printTree |
121 | { |
122 | my $tre = shift ; |
123 | my $prefix = shift ; |
124 | my $indent = shift ; |
125 | my ($k, $v) ; |
126 | |
127 | my $max = (sort {$a <=> $b} map { length $_ } keys %$tre)[-1] ; |
128 | |
129 | $prefix .= " " x $indent ; |
130 | foreach $k (sort keys %$tre) { |
131 | $v = $tre->{$k}; |
132 | print $prefix . "|\n" ; |
133 | print $prefix . "+- $k" ; |
134 | if (ref $v) |
0ca4541c |
135 | { |
e476b1b5 |
136 | print " " . "-" x ($max - length $k ) . "+\n" ; |
0ca4541c |
137 | printTree ($v, $prefix . "|" , $max + $indent - 1) |
e476b1b5 |
138 | } |
139 | else |
140 | { print "\n" } |
141 | } |
142 | |
143 | } |
144 | |
145 | ########################################################################### |
599cee73 |
146 | |
317ea90d |
147 | sub mkHexOct |
599cee73 |
148 | { |
317ea90d |
149 | my ($f, $max, @a) = @_ ; |
599cee73 |
150 | my $mask = "\x00" x $max ; |
151 | my $string = "" ; |
152 | |
153 | foreach (@a) { |
154 | vec($mask, $_, 1) = 1 ; |
155 | } |
156 | |
599cee73 |
157 | foreach (unpack("C*", $mask)) { |
317ea90d |
158 | if ($f eq 'x') { |
159 | $string .= '\x' . sprintf("%2.2x", $_) |
160 | } |
161 | else { |
162 | $string .= '\\' . sprintf("%o", $_) |
163 | } |
599cee73 |
164 | } |
165 | return $string ; |
166 | } |
167 | |
317ea90d |
168 | sub mkHex |
169 | { |
170 | my($max, @a) = @_; |
171 | return mkHexOct("x", $max, @a); |
172 | } |
173 | |
174 | sub mkOct |
175 | { |
176 | my($max, @a) = @_; |
177 | return mkHexOct("o", $max, @a); |
178 | } |
179 | |
599cee73 |
180 | ########################################################################### |
181 | |
e476b1b5 |
182 | if (@ARGV && $ARGV[0] eq "tree") |
183 | { |
d3a7d8c7 |
184 | #print " all -+\n" ; |
e476b1b5 |
185 | printTree($tree, " ", 4) ; |
186 | exit ; |
187 | } |
599cee73 |
188 | |
918426be |
189 | unlink "warnings.h"; |
190 | unlink "lib/warnings.pm"; |
4438c4b7 |
191 | open(WARN, ">warnings.h") || die "Can't create warnings.h: $!\n"; |
192 | open(PM, ">lib/warnings.pm") || die "Can't create lib/warnings.pm: $!\n"; |
599cee73 |
193 | |
194 | print WARN <<'EOM' ; |
195 | /* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
4438c4b7 |
196 | This file is built by warnings.pl |
599cee73 |
197 | Any changes made here will be lost! |
198 | */ |
199 | |
200 | |
0453d815 |
201 | #define Off(x) ((x) / 8) |
202 | #define Bit(x) (1 << ((x) % 8)) |
599cee73 |
203 | #define IsSet(a, x) ((a)[Off(x)] & Bit(x)) |
204 | |
0453d815 |
205 | |
599cee73 |
206 | #define G_WARN_OFF 0 /* $^W == 0 */ |
0453d815 |
207 | #define G_WARN_ON 1 /* -w flag and $^W != 0 */ |
599cee73 |
208 | #define G_WARN_ALL_ON 2 /* -W flag */ |
209 | #define G_WARN_ALL_OFF 4 /* -X flag */ |
0453d815 |
210 | #define G_WARN_ONCE 8 /* set if 'once' ever enabled */ |
599cee73 |
211 | #define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF) |
212 | |
d3a7d8c7 |
213 | #define pWARN_STD Nullsv |
214 | #define pWARN_ALL (Nullsv+1) /* use warnings 'all' */ |
215 | #define pWARN_NONE (Nullsv+2) /* no warnings 'all' */ |
599cee73 |
216 | |
d3a7d8c7 |
217 | #define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \ |
218 | (x) == pWARN_NONE) |
599cee73 |
219 | EOM |
220 | |
d3a7d8c7 |
221 | my $offset = 0 ; |
222 | |
223 | $index = $offset ; |
224 | #@{ $list{"all"} } = walk ($tree) ; |
225 | walk ($tree) ; |
599cee73 |
226 | |
12bcd1a6 |
227 | die <<EOM if $index > 255 ; |
228 | Too many warnings categories -- max is 255 |
229 | rewrite packWARN* & unpackWARN* macros |
230 | EOM |
599cee73 |
231 | |
232 | $index *= 2 ; |
233 | my $warn_size = int($index / 8) + ($index % 8 != 0) ; |
234 | |
235 | my $k ; |
236 | foreach $k (sort { $a <=> $b } keys %Value) { |
237 | print WARN tab(5, "#define WARN_$Value{$k}"), "$k\n" ; |
238 | } |
239 | print WARN "\n" ; |
240 | |
241 | print WARN tab(5, '#define WARNsize'), "$warn_size\n" ; |
242 | #print WARN tab(5, '#define WARN_ALLstring'), '"', ('\377' x $warn_size) , "\"\n" ; |
243 | print WARN tab(5, '#define WARN_ALLstring'), '"', ('\125' x $warn_size) , "\"\n" ; |
244 | print WARN tab(5, '#define WARN_NONEstring'), '"', ('\0' x $warn_size) , "\"\n" ; |
317ea90d |
245 | my $WARN_TAINTstring = mkOct($warn_size, map $_ * 2, @{ $list{'taint'} }); |
246 | |
247 | print WARN tab(5, '#define WARN_TAINTstring'), qq["$WARN_TAINTstring"\n] ; |
599cee73 |
248 | |
249 | print WARN <<'EOM'; |
250 | |
d5a71f30 |
251 | #define isLEXWARN_on (PL_curcop->cop_warnings != pWARN_STD) |
252 | #define isLEXWARN_off (PL_curcop->cop_warnings == pWARN_STD) |
253 | #define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE)) |
254 | #define isWARN_on(c,x) (IsSet(SvPVX(c), 2*(x))) |
255 | #define isWARNf_on(c,x) (IsSet(SvPVX(c), 2*(x)+1)) |
256 | |
d5a71f30 |
257 | #define ckWARN(x) \ |
258 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
259 | (PL_curcop->cop_warnings == pWARN_ALL || \ |
260 | isWARN_on(PL_curcop->cop_warnings, x) ) ) \ |
261 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
262 | |
263 | #define ckWARN2(x,y) \ |
264 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
265 | (PL_curcop->cop_warnings == pWARN_ALL || \ |
266 | isWARN_on(PL_curcop->cop_warnings, x) || \ |
267 | isWARN_on(PL_curcop->cop_warnings, y) ) ) \ |
268 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
269 | |
12bcd1a6 |
270 | #define ckWARN3(x,y,z) \ |
271 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
272 | (PL_curcop->cop_warnings == pWARN_ALL || \ |
273 | isWARN_on(PL_curcop->cop_warnings, x) || \ |
274 | isWARN_on(PL_curcop->cop_warnings, y) || \ |
275 | isWARN_on(PL_curcop->cop_warnings, z) ) ) \ |
276 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
277 | |
278 | #define ckWARN4(x,y,z,t) \ |
279 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
280 | (PL_curcop->cop_warnings == pWARN_ALL || \ |
281 | isWARN_on(PL_curcop->cop_warnings, x) || \ |
282 | isWARN_on(PL_curcop->cop_warnings, y) || \ |
283 | isWARN_on(PL_curcop->cop_warnings, z) || \ |
284 | isWARN_on(PL_curcop->cop_warnings, t) ) ) \ |
285 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
286 | |
d5a71f30 |
287 | #define ckWARN_d(x) \ |
288 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
289 | (PL_curcop->cop_warnings != pWARN_NONE && \ |
290 | isWARN_on(PL_curcop->cop_warnings, x) ) ) |
291 | |
292 | #define ckWARN2_d(x,y) \ |
293 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
294 | (PL_curcop->cop_warnings != pWARN_NONE && \ |
295 | (isWARN_on(PL_curcop->cop_warnings, x) || \ |
296 | isWARN_on(PL_curcop->cop_warnings, y) ) ) ) |
297 | |
12bcd1a6 |
298 | #define ckWARN3_d(x,y,z) \ |
299 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
300 | (PL_curcop->cop_warnings != pWARN_NONE && \ |
301 | (isWARN_on(PL_curcop->cop_warnings, x) || \ |
302 | isWARN_on(PL_curcop->cop_warnings, y) || \ |
303 | isWARN_on(PL_curcop->cop_warnings, z) ) ) ) |
304 | |
305 | #define ckWARN4_d(x,y,z,t) \ |
306 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
307 | (PL_curcop->cop_warnings != pWARN_NONE && \ |
308 | (isWARN_on(PL_curcop->cop_warnings, x) || \ |
309 | isWARN_on(PL_curcop->cop_warnings, y) || \ |
310 | isWARN_on(PL_curcop->cop_warnings, z) || \ |
311 | isWARN_on(PL_curcop->cop_warnings, t) ) ) ) |
312 | |
313 | #define packWARN(a) (a ) |
314 | #define packWARN2(a,b) ((a) | (b)<<8 ) |
315 | #define packWARN3(a,b,c) ((a) | (b)<<8 | (c) <<16 ) |
316 | #define packWARN4(a,b,c,d) ((a) | (b)<<8 | (c) <<16 | (d) <<24) |
317 | |
318 | #define unpackWARN1(x) ((x) & 0xFF) |
319 | #define unpackWARN2(x) (((x) >>8) & 0xFF) |
320 | #define unpackWARN3(x) (((x) >>16) & 0xFF) |
321 | #define unpackWARN4(x) (((x) >>24) & 0xFF) |
322 | |
323 | #define ckDEAD(x) \ |
324 | ( ! specialWARN(PL_curcop->cop_warnings) && \ |
325 | ( isWARNf_on(PL_curcop->cop_warnings, WARN_ALL) || \ |
326 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN1(x)) || \ |
327 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN2(x)) || \ |
328 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN3(x)) || \ |
329 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN4(x)))) |
330 | |
4438c4b7 |
331 | /* end of file warnings.h */ |
599cee73 |
332 | |
333 | EOM |
334 | |
335 | close WARN ; |
336 | |
337 | while (<DATA>) { |
338 | last if /^KEYWORDS$/ ; |
339 | print PM $_ ; |
340 | } |
341 | |
d3a7d8c7 |
342 | #$list{'all'} = [ $offset .. 8 * ($warn_size/2) - 1 ] ; |
343 | |
344 | #my %Keys = map {lc $Value{$_}, $_} keys %Value ; |
345 | |
346 | print PM "%Offsets = (\n" ; |
347 | foreach my $k (sort { $a <=> $b } keys %Value) { |
348 | my $v = lc $Value{$k} ; |
349 | $k *= 2 ; |
350 | print PM tab(4, " '$v'"), "=> $k,\n" ; |
351 | } |
352 | |
353 | print PM " );\n\n" ; |
354 | |
599cee73 |
355 | print PM "%Bits = (\n" ; |
356 | foreach $k (sort keys %list) { |
357 | |
358 | my $v = $list{$k} ; |
359 | my @list = sort { $a <=> $b } @$v ; |
360 | |
0ca4541c |
361 | print PM tab(4, " '$k'"), '=> "', |
362 | # mkHex($warn_size, @list), |
363 | mkHex($warn_size, map $_ * 2 , @list), |
599cee73 |
364 | '", # [', mkRange(@list), "]\n" ; |
365 | } |
366 | |
367 | print PM " );\n\n" ; |
368 | |
369 | print PM "%DeadBits = (\n" ; |
370 | foreach $k (sort keys %list) { |
371 | |
372 | my $v = $list{$k} ; |
373 | my @list = sort { $a <=> $b } @$v ; |
374 | |
0ca4541c |
375 | print PM tab(4, " '$k'"), '=> "', |
376 | # mkHex($warn_size, @list), |
377 | mkHex($warn_size, map $_ * 2 + 1 , @list), |
599cee73 |
378 | '", # [', mkRange(@list), "]\n" ; |
379 | } |
380 | |
381 | print PM " );\n\n" ; |
d3a7d8c7 |
382 | print PM '$NONE = "', ('\0' x $warn_size) , "\";\n" ; |
383 | print PM '$LAST_BIT = ' . "$index ;\n" ; |
384 | print PM '$BYTES = ' . "$warn_size ;\n" ; |
599cee73 |
385 | while (<DATA>) { |
386 | print PM $_ ; |
387 | } |
388 | |
389 | close PM ; |
390 | |
391 | __END__ |
392 | |
4438c4b7 |
393 | # This file was created by warnings.pl |
599cee73 |
394 | # Any changes made here will be lost. |
395 | # |
396 | |
4438c4b7 |
397 | package warnings; |
599cee73 |
398 | |
b75c8c73 |
399 | our $VERSION = '1.00'; |
400 | |
599cee73 |
401 | =head1 NAME |
402 | |
4438c4b7 |
403 | warnings - Perl pragma to control optional warnings |
599cee73 |
404 | |
405 | =head1 SYNOPSIS |
406 | |
4438c4b7 |
407 | use warnings; |
408 | no warnings; |
599cee73 |
409 | |
4438c4b7 |
410 | use warnings "all"; |
411 | no warnings "all"; |
599cee73 |
412 | |
d3a7d8c7 |
413 | use warnings::register; |
414 | if (warnings::enabled()) { |
415 | warnings::warn("some warning"); |
416 | } |
417 | |
418 | if (warnings::enabled("void")) { |
e476b1b5 |
419 | warnings::warn("void", "some warning"); |
420 | } |
421 | |
7e6d00f8 |
422 | if (warnings::enabled($object)) { |
423 | warnings::warn($object, "some warning"); |
424 | } |
425 | |
721f911b |
426 | warnings::warnif("some warning"); |
427 | warnings::warnif("void", "some warning"); |
428 | warnings::warnif($object, "some warning"); |
7e6d00f8 |
429 | |
599cee73 |
430 | =head1 DESCRIPTION |
431 | |
0453d815 |
432 | If no import list is supplied, all possible warnings are either enabled |
433 | or disabled. |
599cee73 |
434 | |
0ca4541c |
435 | A number of functions are provided to assist module authors. |
e476b1b5 |
436 | |
437 | =over 4 |
438 | |
d3a7d8c7 |
439 | =item use warnings::register |
440 | |
7e6d00f8 |
441 | Creates a new warnings category with the same name as the package where |
442 | the call to the pragma is used. |
443 | |
444 | =item warnings::enabled() |
445 | |
446 | Use the warnings category with the same name as the current package. |
447 | |
448 | Return TRUE if that warnings category is enabled in the calling module. |
449 | Otherwise returns FALSE. |
450 | |
451 | =item warnings::enabled($category) |
452 | |
453 | Return TRUE if the warnings category, C<$category>, is enabled in the |
454 | calling module. |
455 | Otherwise returns FALSE. |
456 | |
457 | =item warnings::enabled($object) |
458 | |
459 | Use the name of the class for the object reference, C<$object>, as the |
460 | warnings category. |
461 | |
462 | Return TRUE if that warnings category is enabled in the first scope |
463 | where the object is used. |
464 | Otherwise returns FALSE. |
465 | |
466 | =item warnings::warn($message) |
467 | |
468 | Print C<$message> to STDERR. |
469 | |
470 | Use the warnings category with the same name as the current package. |
471 | |
472 | If that warnings category has been set to "FATAL" in the calling module |
473 | then die. Otherwise return. |
474 | |
475 | =item warnings::warn($category, $message) |
476 | |
477 | Print C<$message> to STDERR. |
478 | |
479 | If the warnings category, C<$category>, has been set to "FATAL" in the |
480 | calling module then die. Otherwise return. |
d3a7d8c7 |
481 | |
7e6d00f8 |
482 | =item warnings::warn($object, $message) |
e476b1b5 |
483 | |
7e6d00f8 |
484 | Print C<$message> to STDERR. |
e476b1b5 |
485 | |
7e6d00f8 |
486 | Use the name of the class for the object reference, C<$object>, as the |
487 | warnings category. |
e476b1b5 |
488 | |
7e6d00f8 |
489 | If that warnings category has been set to "FATAL" in the scope where C<$object> |
490 | is first used then die. Otherwise return. |
599cee73 |
491 | |
e476b1b5 |
492 | |
7e6d00f8 |
493 | =item warnings::warnif($message) |
494 | |
495 | Equivalent to: |
496 | |
497 | if (warnings::enabled()) |
498 | { warnings::warn($message) } |
499 | |
500 | =item warnings::warnif($category, $message) |
501 | |
502 | Equivalent to: |
503 | |
504 | if (warnings::enabled($category)) |
505 | { warnings::warn($category, $message) } |
506 | |
507 | =item warnings::warnif($object, $message) |
508 | |
509 | Equivalent to: |
510 | |
511 | if (warnings::enabled($object)) |
512 | { warnings::warn($object, $message) } |
d3a7d8c7 |
513 | |
e476b1b5 |
514 | =back |
515 | |
749f83fa |
516 | See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>. |
599cee73 |
517 | |
518 | =cut |
519 | |
520 | use Carp ; |
521 | |
522 | KEYWORDS |
523 | |
d3a7d8c7 |
524 | $All = "" ; vec($All, $Offsets{'all'}, 2) = 3 ; |
525 | |
c3186b65 |
526 | sub Croaker |
527 | { |
528 | delete $Carp::CarpInternal{'warnings'}; |
529 | croak @_ ; |
530 | } |
531 | |
599cee73 |
532 | sub bits { |
533 | my $mask ; |
534 | my $catmask ; |
535 | my $fatal = 0 ; |
536 | foreach my $word (@_) { |
327afb7f |
537 | if ($word eq 'FATAL') { |
538 | $fatal = 1; |
539 | } |
d3a7d8c7 |
540 | elsif ($catmask = $Bits{$word}) { |
541 | $mask |= $catmask ; |
542 | $mask |= $DeadBits{$word} if $fatal ; |
599cee73 |
543 | } |
d3a7d8c7 |
544 | else |
c3186b65 |
545 | { Croaker("Unknown warnings category '$word'")} |
599cee73 |
546 | } |
547 | |
548 | return $mask ; |
549 | } |
550 | |
551 | sub import { |
552 | shift; |
f1f33818 |
553 | my $mask = ${^WARNING_BITS} ; |
554 | if (vec($mask, $Offsets{'all'}, 1)) { |
555 | $mask |= $Bits{'all'} ; |
556 | $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
557 | } |
558 | ${^WARNING_BITS} = $mask | bits(@_ ? @_ : 'all') ; |
599cee73 |
559 | } |
560 | |
561 | sub unimport { |
562 | shift; |
d3a7d8c7 |
563 | my $mask = ${^WARNING_BITS} ; |
564 | if (vec($mask, $Offsets{'all'}, 1)) { |
f1f33818 |
565 | $mask |= $Bits{'all'} ; |
d3a7d8c7 |
566 | $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
567 | } |
08540116 |
568 | ${^WARNING_BITS} = $mask & ~ (bits('FATAL' => (@_ ? @_ : 'all')) | $All) ; |
599cee73 |
569 | } |
570 | |
7e6d00f8 |
571 | sub __chk |
599cee73 |
572 | { |
d3a7d8c7 |
573 | my $category ; |
574 | my $offset ; |
7e6d00f8 |
575 | my $isobj = 0 ; |
d3a7d8c7 |
576 | |
577 | if (@_) { |
578 | # check the category supplied. |
579 | $category = shift ; |
7e6d00f8 |
580 | if (ref $category) { |
c3186b65 |
581 | Croaker ("not an object") |
3d1a39c8 |
582 | if $category !~ /^([^=]+)=/ ; |
7e6d00f8 |
583 | $category = $1 ; |
584 | $isobj = 1 ; |
585 | } |
d3a7d8c7 |
586 | $offset = $Offsets{$category}; |
c3186b65 |
587 | Croaker("Unknown warnings category '$category'") |
d3a7d8c7 |
588 | unless defined $offset; |
589 | } |
590 | else { |
0ca4541c |
591 | $category = (caller(1))[0] ; |
d3a7d8c7 |
592 | $offset = $Offsets{$category}; |
c3186b65 |
593 | Croaker("package '$category' not registered for warnings") |
d3a7d8c7 |
594 | unless defined $offset ; |
595 | } |
596 | |
0ca4541c |
597 | my $this_pkg = (caller(1))[0] ; |
7e6d00f8 |
598 | my $i = 2 ; |
599 | my $pkg ; |
600 | |
601 | if ($isobj) { |
602 | while (do { { package DB; $pkg = (caller($i++))[0] } } ) { |
603 | last unless @DB::args && $DB::args[0] =~ /^$category=/ ; |
604 | } |
605 | $i -= 2 ; |
606 | } |
607 | else { |
608 | for ($i = 2 ; $pkg = (caller($i))[0] ; ++ $i) { |
609 | last if $pkg ne $this_pkg ; |
610 | } |
0ca4541c |
611 | $i = 2 |
7e6d00f8 |
612 | if !$pkg || $pkg eq $this_pkg ; |
613 | } |
614 | |
0ca4541c |
615 | my $callers_bitmask = (caller($i))[9] ; |
7e6d00f8 |
616 | return ($callers_bitmask, $offset, $i) ; |
617 | } |
618 | |
619 | sub enabled |
620 | { |
c3186b65 |
621 | Croaker("Usage: warnings::enabled([category])") |
7e6d00f8 |
622 | unless @_ == 1 || @_ == 0 ; |
623 | |
624 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
625 | |
626 | return 0 unless defined $callers_bitmask ; |
d3a7d8c7 |
627 | return vec($callers_bitmask, $offset, 1) || |
628 | vec($callers_bitmask, $Offsets{'all'}, 1) ; |
599cee73 |
629 | } |
630 | |
d3a7d8c7 |
631 | |
e476b1b5 |
632 | sub warn |
633 | { |
c3186b65 |
634 | Croaker("Usage: warnings::warn([category,] 'message')") |
d3a7d8c7 |
635 | unless @_ == 2 || @_ == 1 ; |
d3a7d8c7 |
636 | |
7e6d00f8 |
637 | my $message = pop ; |
638 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
0ca4541c |
639 | croak($message) |
d3a7d8c7 |
640 | if vec($callers_bitmask, $offset+1, 1) || |
641 | vec($callers_bitmask, $Offsets{'all'}+1, 1) ; |
e476b1b5 |
642 | carp($message) ; |
643 | } |
644 | |
7e6d00f8 |
645 | sub warnif |
646 | { |
c3186b65 |
647 | Croaker("Usage: warnings::warnif([category,] 'message')") |
7e6d00f8 |
648 | unless @_ == 2 || @_ == 1 ; |
649 | |
650 | my $message = pop ; |
651 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
7e6d00f8 |
652 | |
0ca4541c |
653 | return |
7e6d00f8 |
654 | unless defined $callers_bitmask && |
655 | (vec($callers_bitmask, $offset, 1) || |
656 | vec($callers_bitmask, $Offsets{'all'}, 1)) ; |
657 | |
0ca4541c |
658 | croak($message) |
7e6d00f8 |
659 | if vec($callers_bitmask, $offset+1, 1) || |
660 | vec($callers_bitmask, $Offsets{'all'}+1, 1) ; |
661 | |
662 | carp($message) ; |
663 | } |
599cee73 |
664 | 1; |