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