11 sub DEFAULT_ON () { 1 }
12 sub DEFAULT_OFF () { 2 }
18 'pipe' => [ 5.008, DEFAULT_OFF],
19 'unopened' => [ 5.008, DEFAULT_OFF],
20 'closed' => [ 5.008, DEFAULT_OFF],
21 'newline' => [ 5.008, DEFAULT_OFF],
22 'exec' => [ 5.008, DEFAULT_OFF],
23 'layer' => [ 5.008, DEFAULT_OFF],
25 'syntax' => [ 5.008, {
26 'ambiguous' => [ 5.008, DEFAULT_OFF],
27 'semicolon' => [ 5.008, DEFAULT_OFF],
28 'precedence' => [ 5.008, DEFAULT_OFF],
29 'bareword' => [ 5.008, DEFAULT_OFF],
30 'reserved' => [ 5.008, DEFAULT_OFF],
31 'digit' => [ 5.008, DEFAULT_OFF],
32 'parenthesis' => [ 5.008, DEFAULT_OFF],
33 'printf' => [ 5.008, DEFAULT_OFF],
34 'prototype' => [ 5.008, DEFAULT_OFF],
35 'qw' => [ 5.008, DEFAULT_OFF],
37 'severe' => [ 5.008, {
38 'inplace' => [ 5.008, DEFAULT_ON],
39 'internal' => [ 5.008, DEFAULT_ON],
40 'debugging' => [ 5.008, DEFAULT_ON],
41 'malloc' => [ 5.008, DEFAULT_ON],
43 'deprecated' => [ 5.008, DEFAULT_OFF],
44 'void' => [ 5.008, DEFAULT_OFF],
45 'recursion' => [ 5.008, DEFAULT_OFF],
46 'redefine' => [ 5.008, DEFAULT_OFF],
47 'numeric' => [ 5.008, DEFAULT_OFF],
48 'uninitialized' => [ 5.008, DEFAULT_OFF],
49 'once' => [ 5.008, DEFAULT_OFF],
50 'misc' => [ 5.008, DEFAULT_OFF],
51 'regexp' => [ 5.008, DEFAULT_OFF],
52 'glob' => [ 5.008, DEFAULT_OFF],
53 'y2k' => [ 5.008, DEFAULT_OFF],
54 'untie' => [ 5.008, DEFAULT_OFF],
55 'substr' => [ 5.008, DEFAULT_OFF],
56 'taint' => [ 5.008, DEFAULT_OFF],
57 'signal' => [ 5.008, DEFAULT_OFF],
58 'closure' => [ 5.008, DEFAULT_OFF],
59 'overflow' => [ 5.008, DEFAULT_OFF],
60 'portable' => [ 5.008, DEFAULT_OFF],
61 'utf8' => [ 5.008, DEFAULT_OFF],
62 'exiting' => [ 5.008, DEFAULT_OFF],
63 'pack' => [ 5.008, DEFAULT_OFF],
64 'unpack' => [ 5.008, DEFAULT_OFF],
65 #'default' => [ 5.008, DEFAULT_ON ],
69 ###########################################################################
72 $t .= "\t" x ($l - (length($t) + 1) / 8);
76 ###########################################################################
92 foreach $k (sort keys %$tre) {
94 die "duplicate key $k\n" if defined $list{$k} ;
95 die "Value associated with key '$k' is not an ARRAY reference"
96 if !ref $v || ref $v ne 'ARRAY' ;
98 my ($ver, $rest) = @{ $v } ;
99 push @{ $v_list{$ver} }, $k;
102 { valueWalk ($rest) }
111 foreach my $ver ( sort { $a <=> $b } keys %v_list ) {
112 foreach my $name (@{ $v_list{$ver} } ) {
113 $ValueToName{ $index } = [ uc $name, $ver ] ;
114 $NameToValue{ uc $name } = $index ++ ;
121 ###########################################################################
129 foreach $k (sort keys %$tre) {
131 die "duplicate key $k\n" if defined $list{$k} ;
132 #$Value{$index} = uc $k ;
133 die "Can't find key '$k'"
134 if ! defined $NameToValue{uc $k} ;
135 push @{ $list{$k} }, $NameToValue{uc $k} ;
136 die "Value associated with key '$k' is not an ARRAY reference"
137 if !ref $v || ref $v ne 'ARRAY' ;
139 my ($ver, $rest) = @{ $v } ;
141 { push (@{ $list{$k} }, walk ($rest)) }
143 push @list, @{ $list{$k} } ;
149 ###########################################################################
158 for ($i = 1 ; $i < @a; ++ $i) {
160 if $a[$i] == $a[$i - 1] + 1 && $a[$i] + 1 == $a[$i + 1] ;
163 my $out = join(",",@out);
165 $out =~ s/,(\.\.,)+/../g ;
169 ###########################################################################
176 my $max = (sort {$a <=> $b} map { length $_ } keys %$tre)[-1] ;
177 my @keys = sort keys %$tre ;
179 while ($k = shift @keys) {
181 die "Value associated with key '$k' is not an ARRAY reference"
182 if !ref $v || ref $v ne 'ARRAY' ;
186 print $prefix . "|\n" ;
187 print $prefix . "+- $k" ;
188 $offset = ' ' x ($max + 4) ;
191 print $prefix . "$k" ;
192 $offset = ' ' x ($max + 1) ;
195 my ($ver, $rest) = @{ $v } ;
198 my $bar = @keys ? "|" : " ";
199 print " -" . "-" x ($max - length $k ) . "+\n" ;
200 printTree ($rest, $prefix . $bar . $offset )
208 ###########################################################################
212 my ($f, $max, @a) = @_ ;
213 my $mask = "\x00" x $max ;
217 vec($mask, $_, 1) = 1 ;
220 foreach (unpack("C*", $mask)) {
222 $string .= '\x' . sprintf("%2.2x", $_)
225 $string .= '\\' . sprintf("%o", $_)
234 return mkHexOct("x", $max, @a);
240 return mkHexOct("o", $max, @a);
243 ###########################################################################
245 if (@ARGV && $ARGV[0] eq "tree")
247 printTree($tree, " ") ;
252 unlink "lib/warnings.pm";
253 open(WARN, ">warnings.h") || die "Can't create warnings.h: $!\n";
254 open(PM, ">lib/warnings.pm") || die "Can't create lib/warnings.pm: $!\n";
257 /* !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
258 This file is built by warnings.pl
259 Any changes made here will be lost!
263 #define Off(x) ((x) / 8)
264 #define Bit(x) (1 << ((x) % 8))
265 #define IsSet(a, x) ((a)[Off(x)] & Bit(x))
268 #define G_WARN_OFF 0 /* $^W == 0 */
269 #define G_WARN_ON 1 /* -w flag and $^W != 0 */
270 #define G_WARN_ALL_ON 2 /* -W flag */
271 #define G_WARN_ALL_OFF 4 /* -X flag */
272 #define G_WARN_ONCE 8 /* set if 'once' ever enabled */
273 #define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF)
275 #define pWARN_STD Nullsv
276 #define pWARN_ALL (Nullsv+1) /* use warnings 'all' */
277 #define pWARN_NONE (Nullsv+2) /* no warnings 'all' */
279 #define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \
286 #@{ $list{"all"} } = walk ($tree) ;
288 my $index = orderValues();
290 die <<EOM if $index > 255 ;
291 Too many warnings categories -- max is 255
292 rewrite packWARN* & unpackWARN* macros
298 my $warn_size = int($index / 8) + ($index % 8 != 0) ;
302 foreach $k (sort { $a <=> $b } keys %ValueToName) {
303 my ($name, $version) = @{ $ValueToName{$k} };
304 print WARN "\n/* Warnings Categories added in Perl $version */\n\n"
305 if $last_ver != $version ;
306 print WARN tab(5, "#define WARN_$name"), "$k\n" ;
307 $last_ver = $version ;
311 print WARN tab(5, '#define WARNsize'), "$warn_size\n" ;
312 #print WARN tab(5, '#define WARN_ALLstring'), '"', ('\377' x $warn_size) , "\"\n" ;
313 print WARN tab(5, '#define WARN_ALLstring'), '"', ('\125' x $warn_size) , "\"\n" ;
314 print WARN tab(5, '#define WARN_NONEstring'), '"', ('\0' x $warn_size) , "\"\n" ;
315 my $WARN_TAINTstring = mkOct($warn_size, map $_ * 2, @{ $list{'taint'} });
317 print WARN tab(5, '#define WARN_TAINTstring'), qq["$WARN_TAINTstring"\n] ;
321 #define isLEXWARN_on (PL_curcop->cop_warnings != pWARN_STD)
322 #define isLEXWARN_off (PL_curcop->cop_warnings == pWARN_STD)
323 #define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE))
324 #define isWARN_on(c,x) (IsSet(SvPVX(c), 2*(x)))
325 #define isWARNf_on(c,x) (IsSet(SvPVX(c), 2*(x)+1))
328 ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \
329 (PL_curcop->cop_warnings == pWARN_ALL || \
330 isWARN_on(PL_curcop->cop_warnings, x) ) ) \
331 || (isLEXWARN_off && PL_dowarn & G_WARN_ON) )
333 #define ckWARN2(x,y) \
334 ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \
335 (PL_curcop->cop_warnings == pWARN_ALL || \
336 isWARN_on(PL_curcop->cop_warnings, x) || \
337 isWARN_on(PL_curcop->cop_warnings, y) ) ) \
338 || (isLEXWARN_off && PL_dowarn & G_WARN_ON) )
340 #define ckWARN3(x,y,z) \
341 ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \
342 (PL_curcop->cop_warnings == pWARN_ALL || \
343 isWARN_on(PL_curcop->cop_warnings, x) || \
344 isWARN_on(PL_curcop->cop_warnings, y) || \
345 isWARN_on(PL_curcop->cop_warnings, z) ) ) \
346 || (isLEXWARN_off && PL_dowarn & G_WARN_ON) )
348 #define ckWARN4(x,y,z,t) \
349 ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \
350 (PL_curcop->cop_warnings == pWARN_ALL || \
351 isWARN_on(PL_curcop->cop_warnings, x) || \
352 isWARN_on(PL_curcop->cop_warnings, y) || \
353 isWARN_on(PL_curcop->cop_warnings, z) || \
354 isWARN_on(PL_curcop->cop_warnings, t) ) ) \
355 || (isLEXWARN_off && PL_dowarn & G_WARN_ON) )
357 #define ckWARN_d(x) \
358 (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \
359 (PL_curcop->cop_warnings != pWARN_NONE && \
360 isWARN_on(PL_curcop->cop_warnings, x) ) )
362 #define ckWARN2_d(x,y) \
363 (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \
364 (PL_curcop->cop_warnings != pWARN_NONE && \
365 (isWARN_on(PL_curcop->cop_warnings, x) || \
366 isWARN_on(PL_curcop->cop_warnings, y) ) ) )
368 #define ckWARN3_d(x,y,z) \
369 (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \
370 (PL_curcop->cop_warnings != pWARN_NONE && \
371 (isWARN_on(PL_curcop->cop_warnings, x) || \
372 isWARN_on(PL_curcop->cop_warnings, y) || \
373 isWARN_on(PL_curcop->cop_warnings, z) ) ) )
375 #define ckWARN4_d(x,y,z,t) \
376 (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \
377 (PL_curcop->cop_warnings != pWARN_NONE && \
378 (isWARN_on(PL_curcop->cop_warnings, x) || \
379 isWARN_on(PL_curcop->cop_warnings, y) || \
380 isWARN_on(PL_curcop->cop_warnings, z) || \
381 isWARN_on(PL_curcop->cop_warnings, t) ) ) )
383 #define packWARN(a) (a )
384 #define packWARN2(a,b) ((a) | (b)<<8 )
385 #define packWARN3(a,b,c) ((a) | (b)<<8 | (c) <<16 )
386 #define packWARN4(a,b,c,d) ((a) | (b)<<8 | (c) <<16 | (d) <<24)
388 #define unpackWARN1(x) ((x) & 0xFF)
389 #define unpackWARN2(x) (((x) >>8) & 0xFF)
390 #define unpackWARN3(x) (((x) >>16) & 0xFF)
391 #define unpackWARN4(x) (((x) >>24) & 0xFF)
394 ( ! specialWARN(PL_curcop->cop_warnings) && \
395 ( isWARNf_on(PL_curcop->cop_warnings, WARN_ALL) || \
396 isWARNf_on(PL_curcop->cop_warnings, unpackWARN1(x)) || \
397 isWARNf_on(PL_curcop->cop_warnings, unpackWARN2(x)) || \
398 isWARNf_on(PL_curcop->cop_warnings, unpackWARN3(x)) || \
399 isWARNf_on(PL_curcop->cop_warnings, unpackWARN4(x))))
401 /* end of file warnings.h */
408 last if /^KEYWORDS$/ ;
412 #$list{'all'} = [ $offset .. 8 * ($warn_size/2) - 1 ] ;
415 print PM "%Offsets = (\n" ;
416 foreach my $k (sort { $a <=> $b } keys %ValueToName) {
417 my ($name, $version) = @{ $ValueToName{$k} };
420 if ( $last_ver != $version ) {
422 print PM tab(4, " # Warnings Categories added in Perl $version");
425 print PM tab(4, " '$name'"), "=> $k,\n" ;
426 $last_ver = $version;
431 print PM "%Bits = (\n" ;
432 foreach $k (sort keys %list) {
435 my @list = sort { $a <=> $b } @$v ;
437 print PM tab(4, " '$k'"), '=> "',
438 # mkHex($warn_size, @list),
439 mkHex($warn_size, map $_ * 2 , @list),
440 '", # [', mkRange(@list), "]\n" ;
445 print PM "%DeadBits = (\n" ;
446 foreach $k (sort keys %list) {
449 my @list = sort { $a <=> $b } @$v ;
451 print PM tab(4, " '$k'"), '=> "',
452 # mkHex($warn_size, @list),
453 mkHex($warn_size, map $_ * 2 + 1 , @list),
454 '", # [', mkRange(@list), "]\n" ;
458 print PM '$NONE = "', ('\0' x $warn_size) , "\";\n" ;
459 print PM '$LAST_BIT = ' . "$index ;\n" ;
460 print PM '$BYTES = ' . "$warn_size ;\n" ;
469 # This file was created by warnings.pl
470 # Any changes made here will be lost.
475 our $VERSION = '1.00';
479 warnings - Perl pragma to control optional warnings
489 use warnings::register;
490 if (warnings::enabled()) {
491 warnings::warn("some warning");
494 if (warnings::enabled("void")) {
495 warnings::warn("void", "some warning");
498 if (warnings::enabled($object)) {
499 warnings::warn($object, "some warning");
502 warnings::warnif("some warning");
503 warnings::warnif("void", "some warning");
504 warnings::warnif($object, "some warning");
508 If no import list is supplied, all possible warnings are either enabled
511 A number of functions are provided to assist module authors.
515 =item use warnings::register
517 Creates a new warnings category with the same name as the package where
518 the call to the pragma is used.
520 =item warnings::enabled()
522 Use the warnings category with the same name as the current package.
524 Return TRUE if that warnings category is enabled in the calling module.
525 Otherwise returns FALSE.
527 =item warnings::enabled($category)
529 Return TRUE if the warnings category, C<$category>, is enabled in the
531 Otherwise returns FALSE.
533 =item warnings::enabled($object)
535 Use the name of the class for the object reference, C<$object>, as the
538 Return TRUE if that warnings category is enabled in the first scope
539 where the object is used.
540 Otherwise returns FALSE.
542 =item warnings::warn($message)
544 Print C<$message> to STDERR.
546 Use the warnings category with the same name as the current package.
548 If that warnings category has been set to "FATAL" in the calling module
549 then die. Otherwise return.
551 =item warnings::warn($category, $message)
553 Print C<$message> to STDERR.
555 If the warnings category, C<$category>, has been set to "FATAL" in the
556 calling module then die. Otherwise return.
558 =item warnings::warn($object, $message)
560 Print C<$message> to STDERR.
562 Use the name of the class for the object reference, C<$object>, as the
565 If that warnings category has been set to "FATAL" in the scope where C<$object>
566 is first used then die. Otherwise return.
569 =item warnings::warnif($message)
573 if (warnings::enabled())
574 { warnings::warn($message) }
576 =item warnings::warnif($category, $message)
580 if (warnings::enabled($category))
581 { warnings::warn($category, $message) }
583 =item warnings::warnif($object, $message)
587 if (warnings::enabled($object))
588 { warnings::warn($object, $message) }
592 See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>.
600 $All = "" ; vec($All, $Offsets{'all'}, 2) = 3 ;
604 delete $Carp::CarpInternal{'warnings'};
612 foreach my $word (@_) {
613 if ($word eq 'FATAL') {
616 elsif ($catmask = $Bits{$word}) {
618 $mask |= $DeadBits{$word} if $fatal ;
621 { Croaker("Unknown warnings category '$word'")}
629 my $mask = ${^WARNING_BITS} ;
630 if (vec($mask, $Offsets{'all'}, 1)) {
631 $mask |= $Bits{'all'} ;
632 $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1);
634 ${^WARNING_BITS} = $mask | bits(@_ ? @_ : 'all') ;
639 my $mask = ${^WARNING_BITS} ;
640 if (vec($mask, $Offsets{'all'}, 1)) {
641 $mask |= $Bits{'all'} ;
642 $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1);
644 ${^WARNING_BITS} = $mask & ~ (bits('FATAL' => (@_ ? @_ : 'all')) | $All) ;
654 # check the category supplied.
657 Croaker ("not an object")
658 if $category !~ /^([^=]+)=/ ;
662 $offset = $Offsets{$category};
663 Croaker("Unknown warnings category '$category'")
664 unless defined $offset;
667 $category = (caller(1))[0] ;
668 $offset = $Offsets{$category};
669 Croaker("package '$category' not registered for warnings")
670 unless defined $offset ;
673 my $this_pkg = (caller(1))[0] ;
678 while (do { { package DB; $pkg = (caller($i++))[0] } } ) {
679 last unless @DB::args && $DB::args[0] =~ /^$category=/ ;
684 for ($i = 2 ; $pkg = (caller($i))[0] ; ++ $i) {
685 last if $pkg ne $this_pkg ;
688 if !$pkg || $pkg eq $this_pkg ;
691 my $callers_bitmask = (caller($i))[9] ;
692 return ($callers_bitmask, $offset, $i) ;
697 Croaker("Usage: warnings::enabled([category])")
698 unless @_ == 1 || @_ == 0 ;
700 my ($callers_bitmask, $offset, $i) = __chk(@_) ;
702 return 0 unless defined $callers_bitmask ;
703 return vec($callers_bitmask, $offset, 1) ||
704 vec($callers_bitmask, $Offsets{'all'}, 1) ;
710 Croaker("Usage: warnings::warn([category,] 'message')")
711 unless @_ == 2 || @_ == 1 ;
714 my ($callers_bitmask, $offset, $i) = __chk(@_) ;
716 if vec($callers_bitmask, $offset+1, 1) ||
717 vec($callers_bitmask, $Offsets{'all'}+1, 1) ;
723 Croaker("Usage: warnings::warnif([category,] 'message')")
724 unless @_ == 2 || @_ == 1 ;
727 my ($callers_bitmask, $offset, $i) = __chk(@_) ;
730 unless defined $callers_bitmask &&
731 (vec($callers_bitmask, $offset, 1) ||
732 vec($callers_bitmask, $Offsets{'all'}, 1)) ;
735 if vec($callers_bitmask, $offset+1, 1) ||
736 vec($callers_bitmask, $Offsets{'all'}+1, 1) ;