Commit | Line | Data |
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599cee73 PM |
1 | #!/usr/bin/perl |
2 | ||
8becbb3b | 3 | $VERSION = '1.02'; |
b75c8c73 | 4 | |
73f0cc2d GS |
5 | BEGIN { |
6 | push @INC, './lib'; | |
7 | } | |
599cee73 PM |
8 | use strict ; |
9 | ||
10 | sub DEFAULT_ON () { 1 } | |
11 | sub DEFAULT_OFF () { 2 } | |
12 | ||
13 | my $tree = { | |
d3a7d8c7 | 14 | |
0d658bf5 PM |
15 | 'all' => [ 5.008, { |
16 | 'io' => [ 5.008, { | |
17 | 'pipe' => [ 5.008, DEFAULT_OFF], | |
18 | 'unopened' => [ 5.008, DEFAULT_OFF], | |
19 | 'closed' => [ 5.008, DEFAULT_OFF], | |
20 | 'newline' => [ 5.008, DEFAULT_OFF], | |
21 | 'exec' => [ 5.008, DEFAULT_OFF], | |
22 | 'layer' => [ 5.008, DEFAULT_OFF], | |
23 | }], | |
24 | 'syntax' => [ 5.008, { | |
25 | 'ambiguous' => [ 5.008, DEFAULT_OFF], | |
26 | 'semicolon' => [ 5.008, DEFAULT_OFF], | |
27 | 'precedence' => [ 5.008, DEFAULT_OFF], | |
28 | 'bareword' => [ 5.008, DEFAULT_OFF], | |
29 | 'reserved' => [ 5.008, DEFAULT_OFF], | |
30 | 'digit' => [ 5.008, DEFAULT_OFF], | |
31 | 'parenthesis' => [ 5.008, DEFAULT_OFF], | |
32 | 'printf' => [ 5.008, DEFAULT_OFF], | |
33 | 'prototype' => [ 5.008, DEFAULT_OFF], | |
34 | 'qw' => [ 5.008, DEFAULT_OFF], | |
35 | }], | |
36 | 'severe' => [ 5.008, { | |
37 | 'inplace' => [ 5.008, DEFAULT_ON], | |
38 | 'internal' => [ 5.008, DEFAULT_ON], | |
39 | 'debugging' => [ 5.008, DEFAULT_ON], | |
40 | 'malloc' => [ 5.008, DEFAULT_ON], | |
41 | }], | |
42 | 'deprecated' => [ 5.008, DEFAULT_OFF], | |
43 | 'void' => [ 5.008, DEFAULT_OFF], | |
44 | 'recursion' => [ 5.008, DEFAULT_OFF], | |
45 | 'redefine' => [ 5.008, DEFAULT_OFF], | |
46 | 'numeric' => [ 5.008, DEFAULT_OFF], | |
47 | 'uninitialized' => [ 5.008, DEFAULT_OFF], | |
48 | 'once' => [ 5.008, DEFAULT_OFF], | |
49 | 'misc' => [ 5.008, DEFAULT_OFF], | |
50 | 'regexp' => [ 5.008, DEFAULT_OFF], | |
51 | 'glob' => [ 5.008, DEFAULT_OFF], | |
0d658bf5 PM |
52 | 'untie' => [ 5.008, DEFAULT_OFF], |
53 | 'substr' => [ 5.008, DEFAULT_OFF], | |
54 | 'taint' => [ 5.008, DEFAULT_OFF], | |
55 | 'signal' => [ 5.008, DEFAULT_OFF], | |
56 | 'closure' => [ 5.008, DEFAULT_OFF], | |
57 | 'overflow' => [ 5.008, DEFAULT_OFF], | |
58 | 'portable' => [ 5.008, DEFAULT_OFF], | |
59 | 'utf8' => [ 5.008, DEFAULT_OFF], | |
60 | 'exiting' => [ 5.008, DEFAULT_OFF], | |
61 | 'pack' => [ 5.008, DEFAULT_OFF], | |
62 | 'unpack' => [ 5.008, DEFAULT_OFF], | |
38875929 | 63 | 'threads' => [ 5.008, DEFAULT_OFF], |
8fa7688f SF |
64 | 'assertions' => [ 5.009, DEFAULT_OFF], |
65 | ||
0d658bf5 PM |
66 | #'default' => [ 5.008, DEFAULT_ON ], |
67 | }], | |
d3a7d8c7 | 68 | } ; |
599cee73 | 69 | |
599cee73 PM |
70 | ########################################################################### |
71 | sub tab { | |
72 | my($l, $t) = @_; | |
73 | $t .= "\t" x ($l - (length($t) + 1) / 8); | |
74 | $t; | |
75 | } | |
76 | ||
77 | ########################################################################### | |
78 | ||
79 | my %list ; | |
80 | my %Value ; | |
0d658bf5 PM |
81 | my %ValueToName ; |
82 | my %NameToValue ; | |
d3a7d8c7 | 83 | my $index ; |
599cee73 | 84 | |
0d658bf5 PM |
85 | my %v_list = () ; |
86 | ||
87 | sub valueWalk | |
88 | { | |
89 | my $tre = shift ; | |
90 | my @list = () ; | |
91 | my ($k, $v) ; | |
92 | ||
93 | foreach $k (sort keys %$tre) { | |
94 | $v = $tre->{$k}; | |
95 | die "duplicate key $k\n" if defined $list{$k} ; | |
96 | die "Value associated with key '$k' is not an ARRAY reference" | |
97 | if !ref $v || ref $v ne 'ARRAY' ; | |
98 | ||
99 | my ($ver, $rest) = @{ $v } ; | |
100 | push @{ $v_list{$ver} }, $k; | |
101 | ||
102 | if (ref $rest) | |
103 | { valueWalk ($rest) } | |
104 | ||
105 | } | |
106 | ||
107 | } | |
108 | ||
109 | sub orderValues | |
110 | { | |
111 | my $index = 0; | |
112 | foreach my $ver ( sort { $a <=> $b } keys %v_list ) { | |
113 | foreach my $name (@{ $v_list{$ver} } ) { | |
114 | $ValueToName{ $index } = [ uc $name, $ver ] ; | |
115 | $NameToValue{ uc $name } = $index ++ ; | |
116 | } | |
117 | } | |
118 | ||
119 | return $index ; | |
120 | } | |
121 | ||
122 | ########################################################################### | |
123 | ||
599cee73 PM |
124 | sub walk |
125 | { | |
126 | my $tre = shift ; | |
127 | my @list = () ; | |
128 | my ($k, $v) ; | |
129 | ||
95dfd3ab GS |
130 | foreach $k (sort keys %$tre) { |
131 | $v = $tre->{$k}; | |
599cee73 | 132 | die "duplicate key $k\n" if defined $list{$k} ; |
0d658bf5 PM |
133 | #$Value{$index} = uc $k ; |
134 | die "Can't find key '$k'" | |
135 | if ! defined $NameToValue{uc $k} ; | |
136 | push @{ $list{$k} }, $NameToValue{uc $k} ; | |
137 | die "Value associated with key '$k' is not an ARRAY reference" | |
138 | if !ref $v || ref $v ne 'ARRAY' ; | |
139 | ||
140 | my ($ver, $rest) = @{ $v } ; | |
141 | if (ref $rest) | |
142 | { push (@{ $list{$k} }, walk ($rest)) } | |
143 | ||
599cee73 PM |
144 | push @list, @{ $list{$k} } ; |
145 | } | |
146 | ||
147 | return @list ; | |
599cee73 PM |
148 | } |
149 | ||
150 | ########################################################################### | |
151 | ||
152 | sub mkRange | |
153 | { | |
154 | my @a = @_ ; | |
155 | my @out = @a ; | |
156 | my $i ; | |
157 | ||
158 | ||
159 | for ($i = 1 ; $i < @a; ++ $i) { | |
0ca4541c | 160 | $out[$i] = ".." |
599cee73 PM |
161 | if $a[$i] == $a[$i - 1] + 1 && $a[$i] + 1 == $a[$i + 1] ; |
162 | } | |
163 | ||
164 | my $out = join(",",@out); | |
165 | ||
166 | $out =~ s/,(\.\.,)+/../g ; | |
167 | return $out; | |
168 | } | |
169 | ||
170 | ########################################################################### | |
e476b1b5 GS |
171 | sub printTree |
172 | { | |
173 | my $tre = shift ; | |
174 | my $prefix = shift ; | |
e476b1b5 GS |
175 | my ($k, $v) ; |
176 | ||
177 | my $max = (sort {$a <=> $b} map { length $_ } keys %$tre)[-1] ; | |
0d658bf5 | 178 | my @keys = sort keys %$tre ; |
e476b1b5 | 179 | |
0d658bf5 | 180 | while ($k = shift @keys) { |
e476b1b5 | 181 | $v = $tre->{$k}; |
0d658bf5 PM |
182 | die "Value associated with key '$k' is not an ARRAY reference" |
183 | if !ref $v || ref $v ne 'ARRAY' ; | |
184 | ||
185 | my $offset ; | |
186 | if ($tre ne $tree) { | |
187 | print $prefix . "|\n" ; | |
188 | print $prefix . "+- $k" ; | |
189 | $offset = ' ' x ($max + 4) ; | |
190 | } | |
191 | else { | |
192 | print $prefix . "$k" ; | |
193 | $offset = ' ' x ($max + 1) ; | |
194 | } | |
195 | ||
196 | my ($ver, $rest) = @{ $v } ; | |
197 | if (ref $rest) | |
0ca4541c | 198 | { |
0d658bf5 PM |
199 | my $bar = @keys ? "|" : " "; |
200 | print " -" . "-" x ($max - length $k ) . "+\n" ; | |
201 | printTree ($rest, $prefix . $bar . $offset ) | |
e476b1b5 GS |
202 | } |
203 | else | |
204 | { print "\n" } | |
205 | } | |
206 | ||
207 | } | |
208 | ||
209 | ########################################################################### | |
599cee73 | 210 | |
317ea90d | 211 | sub mkHexOct |
599cee73 | 212 | { |
317ea90d | 213 | my ($f, $max, @a) = @_ ; |
599cee73 PM |
214 | my $mask = "\x00" x $max ; |
215 | my $string = "" ; | |
216 | ||
217 | foreach (@a) { | |
218 | vec($mask, $_, 1) = 1 ; | |
219 | } | |
220 | ||
599cee73 | 221 | foreach (unpack("C*", $mask)) { |
317ea90d MS |
222 | if ($f eq 'x') { |
223 | $string .= '\x' . sprintf("%2.2x", $_) | |
224 | } | |
225 | else { | |
226 | $string .= '\\' . sprintf("%o", $_) | |
227 | } | |
599cee73 PM |
228 | } |
229 | return $string ; | |
230 | } | |
231 | ||
317ea90d MS |
232 | sub mkHex |
233 | { | |
234 | my($max, @a) = @_; | |
235 | return mkHexOct("x", $max, @a); | |
236 | } | |
237 | ||
238 | sub mkOct | |
239 | { | |
240 | my($max, @a) = @_; | |
241 | return mkHexOct("o", $max, @a); | |
242 | } | |
243 | ||
599cee73 PM |
244 | ########################################################################### |
245 | ||
e476b1b5 GS |
246 | if (@ARGV && $ARGV[0] eq "tree") |
247 | { | |
0d658bf5 | 248 | printTree($tree, " ") ; |
e476b1b5 GS |
249 | exit ; |
250 | } | |
599cee73 | 251 | |
918426be NC |
252 | unlink "warnings.h"; |
253 | unlink "lib/warnings.pm"; | |
4438c4b7 | 254 | open(WARN, ">warnings.h") || die "Can't create warnings.h: $!\n"; |
dfb1454f | 255 | binmode WARN; |
4438c4b7 | 256 | open(PM, ">lib/warnings.pm") || die "Can't create lib/warnings.pm: $!\n"; |
dfb1454f | 257 | binmode PM; |
599cee73 PM |
258 | |
259 | print WARN <<'EOM' ; | |
37442d52 RGS |
260 | /* -*- buffer-read-only: t -*- |
261 | !!!!!!! DO NOT EDIT THIS FILE !!!!!!! | |
4438c4b7 | 262 | This file is built by warnings.pl |
599cee73 PM |
263 | Any changes made here will be lost! |
264 | */ | |
265 | ||
266 | ||
0453d815 PM |
267 | #define Off(x) ((x) / 8) |
268 | #define Bit(x) (1 << ((x) % 8)) | |
599cee73 PM |
269 | #define IsSet(a, x) ((a)[Off(x)] & Bit(x)) |
270 | ||
0453d815 | 271 | |
599cee73 | 272 | #define G_WARN_OFF 0 /* $^W == 0 */ |
0453d815 | 273 | #define G_WARN_ON 1 /* -w flag and $^W != 0 */ |
599cee73 PM |
274 | #define G_WARN_ALL_ON 2 /* -W flag */ |
275 | #define G_WARN_ALL_OFF 4 /* -X flag */ | |
0453d815 | 276 | #define G_WARN_ONCE 8 /* set if 'once' ever enabled */ |
599cee73 PM |
277 | #define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF) |
278 | ||
d3a7d8c7 GS |
279 | #define pWARN_STD Nullsv |
280 | #define pWARN_ALL (Nullsv+1) /* use warnings 'all' */ | |
281 | #define pWARN_NONE (Nullsv+2) /* no warnings 'all' */ | |
599cee73 | 282 | |
d3a7d8c7 GS |
283 | #define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \ |
284 | (x) == pWARN_NONE) | |
599cee73 PM |
285 | EOM |
286 | ||
d3a7d8c7 GS |
287 | my $offset = 0 ; |
288 | ||
289 | $index = $offset ; | |
290 | #@{ $list{"all"} } = walk ($tree) ; | |
0d658bf5 PM |
291 | valueWalk ($tree) ; |
292 | my $index = orderValues(); | |
599cee73 | 293 | |
12bcd1a6 PM |
294 | die <<EOM if $index > 255 ; |
295 | Too many warnings categories -- max is 255 | |
296 | rewrite packWARN* & unpackWARN* macros | |
297 | EOM | |
599cee73 | 298 | |
0d658bf5 PM |
299 | walk ($tree) ; |
300 | ||
599cee73 PM |
301 | $index *= 2 ; |
302 | my $warn_size = int($index / 8) + ($index % 8 != 0) ; | |
303 | ||
304 | my $k ; | |
0d658bf5 PM |
305 | my $last_ver = 0; |
306 | foreach $k (sort { $a <=> $b } keys %ValueToName) { | |
307 | my ($name, $version) = @{ $ValueToName{$k} }; | |
308 | print WARN "\n/* Warnings Categories added in Perl $version */\n\n" | |
309 | if $last_ver != $version ; | |
310 | print WARN tab(5, "#define WARN_$name"), "$k\n" ; | |
311 | $last_ver = $version ; | |
599cee73 PM |
312 | } |
313 | print WARN "\n" ; | |
314 | ||
315 | print WARN tab(5, '#define WARNsize'), "$warn_size\n" ; | |
316 | #print WARN tab(5, '#define WARN_ALLstring'), '"', ('\377' x $warn_size) , "\"\n" ; | |
317 | print WARN tab(5, '#define WARN_ALLstring'), '"', ('\125' x $warn_size) , "\"\n" ; | |
318 | print WARN tab(5, '#define WARN_NONEstring'), '"', ('\0' x $warn_size) , "\"\n" ; | |
317ea90d MS |
319 | my $WARN_TAINTstring = mkOct($warn_size, map $_ * 2, @{ $list{'taint'} }); |
320 | ||
321 | print WARN tab(5, '#define WARN_TAINTstring'), qq["$WARN_TAINTstring"\n] ; | |
599cee73 PM |
322 | |
323 | print WARN <<'EOM'; | |
324 | ||
d5a71f30 GS |
325 | #define isLEXWARN_on (PL_curcop->cop_warnings != pWARN_STD) |
326 | #define isLEXWARN_off (PL_curcop->cop_warnings == pWARN_STD) | |
327 | #define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE)) | |
95a20fc0 SP |
328 | #define isWARN_on(c,x) (IsSet(SvPVX_const(c), 2*(x))) |
329 | #define isWARNf_on(c,x) (IsSet(SvPVX_const(c), 2*(x)+1)) | |
d5a71f30 | 330 | |
d5a71f30 GS |
331 | #define ckWARN(x) \ |
332 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
333 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
334 | isWARN_on(PL_curcop->cop_warnings, x) ) ) \ | |
335 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
336 | ||
337 | #define ckWARN2(x,y) \ | |
338 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
339 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
340 | isWARN_on(PL_curcop->cop_warnings, x) || \ | |
341 | isWARN_on(PL_curcop->cop_warnings, y) ) ) \ | |
342 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
343 | ||
12bcd1a6 PM |
344 | #define ckWARN3(x,y,z) \ |
345 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
346 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
347 | isWARN_on(PL_curcop->cop_warnings, x) || \ | |
348 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
349 | isWARN_on(PL_curcop->cop_warnings, z) ) ) \ | |
350 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
351 | ||
352 | #define ckWARN4(x,y,z,t) \ | |
353 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
354 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
355 | isWARN_on(PL_curcop->cop_warnings, x) || \ | |
356 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
357 | isWARN_on(PL_curcop->cop_warnings, z) || \ | |
358 | isWARN_on(PL_curcop->cop_warnings, t) ) ) \ | |
359 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
360 | ||
d5a71f30 GS |
361 | #define ckWARN_d(x) \ |
362 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
363 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
364 | isWARN_on(PL_curcop->cop_warnings, x) ) ) | |
365 | ||
366 | #define ckWARN2_d(x,y) \ | |
367 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
368 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
369 | (isWARN_on(PL_curcop->cop_warnings, x) || \ | |
370 | isWARN_on(PL_curcop->cop_warnings, y) ) ) ) | |
371 | ||
12bcd1a6 PM |
372 | #define ckWARN3_d(x,y,z) \ |
373 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
374 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
375 | (isWARN_on(PL_curcop->cop_warnings, x) || \ | |
376 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
377 | isWARN_on(PL_curcop->cop_warnings, z) ) ) ) | |
378 | ||
379 | #define ckWARN4_d(x,y,z,t) \ | |
380 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
381 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
382 | (isWARN_on(PL_curcop->cop_warnings, x) || \ | |
383 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
384 | isWARN_on(PL_curcop->cop_warnings, z) || \ | |
385 | isWARN_on(PL_curcop->cop_warnings, t) ) ) ) | |
386 | ||
387 | #define packWARN(a) (a ) | |
388 | #define packWARN2(a,b) ((a) | (b)<<8 ) | |
389 | #define packWARN3(a,b,c) ((a) | (b)<<8 | (c) <<16 ) | |
390 | #define packWARN4(a,b,c,d) ((a) | (b)<<8 | (c) <<16 | (d) <<24) | |
391 | ||
392 | #define unpackWARN1(x) ((x) & 0xFF) | |
393 | #define unpackWARN2(x) (((x) >>8) & 0xFF) | |
394 | #define unpackWARN3(x) (((x) >>16) & 0xFF) | |
395 | #define unpackWARN4(x) (((x) >>24) & 0xFF) | |
396 | ||
397 | #define ckDEAD(x) \ | |
398 | ( ! specialWARN(PL_curcop->cop_warnings) && \ | |
399 | ( isWARNf_on(PL_curcop->cop_warnings, WARN_ALL) || \ | |
400 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN1(x)) || \ | |
401 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN2(x)) || \ | |
402 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN3(x)) || \ | |
403 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN4(x)))) | |
404 | ||
4438c4b7 | 405 | /* end of file warnings.h */ |
37442d52 | 406 | /* ex: set ro: */ |
599cee73 PM |
407 | EOM |
408 | ||
409 | close WARN ; | |
410 | ||
411 | while (<DATA>) { | |
412 | last if /^KEYWORDS$/ ; | |
413 | print PM $_ ; | |
414 | } | |
415 | ||
d3a7d8c7 GS |
416 | #$list{'all'} = [ $offset .. 8 * ($warn_size/2) - 1 ] ; |
417 | ||
0d658bf5 | 418 | $last_ver = 0; |
53c33732 | 419 | print PM "our %Offsets = (\n" ; |
0d658bf5 PM |
420 | foreach my $k (sort { $a <=> $b } keys %ValueToName) { |
421 | my ($name, $version) = @{ $ValueToName{$k} }; | |
422 | $name = lc $name; | |
d3a7d8c7 | 423 | $k *= 2 ; |
0d658bf5 PM |
424 | if ( $last_ver != $version ) { |
425 | print PM "\n"; | |
426 | print PM tab(4, " # Warnings Categories added in Perl $version"); | |
427 | print PM "\n\n"; | |
428 | } | |
429 | print PM tab(4, " '$name'"), "=> $k,\n" ; | |
430 | $last_ver = $version; | |
d3a7d8c7 GS |
431 | } |
432 | ||
433 | print PM " );\n\n" ; | |
434 | ||
53c33732 | 435 | print PM "our %Bits = (\n" ; |
599cee73 PM |
436 | foreach $k (sort keys %list) { |
437 | ||
438 | my $v = $list{$k} ; | |
439 | my @list = sort { $a <=> $b } @$v ; | |
440 | ||
0ca4541c NIS |
441 | print PM tab(4, " '$k'"), '=> "', |
442 | # mkHex($warn_size, @list), | |
443 | mkHex($warn_size, map $_ * 2 , @list), | |
599cee73 PM |
444 | '", # [', mkRange(@list), "]\n" ; |
445 | } | |
446 | ||
447 | print PM " );\n\n" ; | |
448 | ||
53c33732 | 449 | print PM "our %DeadBits = (\n" ; |
599cee73 PM |
450 | foreach $k (sort keys %list) { |
451 | ||
452 | my $v = $list{$k} ; | |
453 | my @list = sort { $a <=> $b } @$v ; | |
454 | ||
0ca4541c NIS |
455 | print PM tab(4, " '$k'"), '=> "', |
456 | # mkHex($warn_size, @list), | |
457 | mkHex($warn_size, map $_ * 2 + 1 , @list), | |
599cee73 PM |
458 | '", # [', mkRange(@list), "]\n" ; |
459 | } | |
460 | ||
461 | print PM " );\n\n" ; | |
d3a7d8c7 GS |
462 | print PM '$NONE = "', ('\0' x $warn_size) , "\";\n" ; |
463 | print PM '$LAST_BIT = ' . "$index ;\n" ; | |
464 | print PM '$BYTES = ' . "$warn_size ;\n" ; | |
599cee73 PM |
465 | while (<DATA>) { |
466 | print PM $_ ; | |
467 | } | |
468 | ||
37442d52 | 469 | print PM "# ex: set ro:\n"; |
599cee73 PM |
470 | close PM ; |
471 | ||
472 | __END__ | |
37442d52 | 473 | # -*- buffer-read-only: t -*- |
38875929 | 474 | # !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
4438c4b7 | 475 | # This file was created by warnings.pl |
599cee73 PM |
476 | # Any changes made here will be lost. |
477 | # | |
478 | ||
4438c4b7 | 479 | package warnings; |
599cee73 | 480 | |
09e96b99 | 481 | our $VERSION = '1.04'; |
b75c8c73 | 482 | |
599cee73 PM |
483 | =head1 NAME |
484 | ||
4438c4b7 | 485 | warnings - Perl pragma to control optional warnings |
599cee73 PM |
486 | |
487 | =head1 SYNOPSIS | |
488 | ||
4438c4b7 JH |
489 | use warnings; |
490 | no warnings; | |
599cee73 | 491 | |
4438c4b7 JH |
492 | use warnings "all"; |
493 | no warnings "all"; | |
599cee73 | 494 | |
d3a7d8c7 GS |
495 | use warnings::register; |
496 | if (warnings::enabled()) { | |
497 | warnings::warn("some warning"); | |
498 | } | |
499 | ||
500 | if (warnings::enabled("void")) { | |
e476b1b5 GS |
501 | warnings::warn("void", "some warning"); |
502 | } | |
503 | ||
7e6d00f8 PM |
504 | if (warnings::enabled($object)) { |
505 | warnings::warn($object, "some warning"); | |
506 | } | |
507 | ||
721f911b PM |
508 | warnings::warnif("some warning"); |
509 | warnings::warnif("void", "some warning"); | |
510 | warnings::warnif($object, "some warning"); | |
7e6d00f8 | 511 | |
599cee73 PM |
512 | =head1 DESCRIPTION |
513 | ||
fe2e802c EM |
514 | The C<warnings> pragma is a replacement for the command line flag C<-w>, |
515 | but the pragma is limited to the enclosing block, while the flag is global. | |
516 | See L<perllexwarn> for more information. | |
517 | ||
0453d815 PM |
518 | If no import list is supplied, all possible warnings are either enabled |
519 | or disabled. | |
599cee73 | 520 | |
0ca4541c | 521 | A number of functions are provided to assist module authors. |
e476b1b5 GS |
522 | |
523 | =over 4 | |
524 | ||
d3a7d8c7 GS |
525 | =item use warnings::register |
526 | ||
7e6d00f8 PM |
527 | Creates a new warnings category with the same name as the package where |
528 | the call to the pragma is used. | |
529 | ||
530 | =item warnings::enabled() | |
531 | ||
532 | Use the warnings category with the same name as the current package. | |
533 | ||
534 | Return TRUE if that warnings category is enabled in the calling module. | |
535 | Otherwise returns FALSE. | |
536 | ||
537 | =item warnings::enabled($category) | |
538 | ||
539 | Return TRUE if the warnings category, C<$category>, is enabled in the | |
540 | calling module. | |
541 | Otherwise returns FALSE. | |
542 | ||
543 | =item warnings::enabled($object) | |
544 | ||
545 | Use the name of the class for the object reference, C<$object>, as the | |
546 | warnings category. | |
547 | ||
548 | Return TRUE if that warnings category is enabled in the first scope | |
549 | where the object is used. | |
550 | Otherwise returns FALSE. | |
551 | ||
552 | =item warnings::warn($message) | |
553 | ||
554 | Print C<$message> to STDERR. | |
555 | ||
556 | Use the warnings category with the same name as the current package. | |
557 | ||
558 | If that warnings category has been set to "FATAL" in the calling module | |
559 | then die. Otherwise return. | |
560 | ||
561 | =item warnings::warn($category, $message) | |
562 | ||
563 | Print C<$message> to STDERR. | |
564 | ||
565 | If the warnings category, C<$category>, has been set to "FATAL" in the | |
566 | calling module then die. Otherwise return. | |
d3a7d8c7 | 567 | |
7e6d00f8 | 568 | =item warnings::warn($object, $message) |
e476b1b5 | 569 | |
7e6d00f8 | 570 | Print C<$message> to STDERR. |
e476b1b5 | 571 | |
7e6d00f8 PM |
572 | Use the name of the class for the object reference, C<$object>, as the |
573 | warnings category. | |
e476b1b5 | 574 | |
7e6d00f8 PM |
575 | If that warnings category has been set to "FATAL" in the scope where C<$object> |
576 | is first used then die. Otherwise return. | |
599cee73 | 577 | |
e476b1b5 | 578 | |
7e6d00f8 PM |
579 | =item warnings::warnif($message) |
580 | ||
581 | Equivalent to: | |
582 | ||
583 | if (warnings::enabled()) | |
584 | { warnings::warn($message) } | |
585 | ||
586 | =item warnings::warnif($category, $message) | |
587 | ||
588 | Equivalent to: | |
589 | ||
590 | if (warnings::enabled($category)) | |
591 | { warnings::warn($category, $message) } | |
592 | ||
593 | =item warnings::warnif($object, $message) | |
594 | ||
595 | Equivalent to: | |
596 | ||
597 | if (warnings::enabled($object)) | |
598 | { warnings::warn($object, $message) } | |
d3a7d8c7 | 599 | |
e476b1b5 GS |
600 | =back |
601 | ||
749f83fa | 602 | See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>. |
599cee73 PM |
603 | |
604 | =cut | |
605 | ||
599cee73 PM |
606 | KEYWORDS |
607 | ||
d3a7d8c7 GS |
608 | $All = "" ; vec($All, $Offsets{'all'}, 2) = 3 ; |
609 | ||
c3186b65 PM |
610 | sub Croaker |
611 | { | |
09e96b99 | 612 | require Carp; |
c3186b65 | 613 | delete $Carp::CarpInternal{'warnings'}; |
8becbb3b | 614 | Carp::croak(@_); |
c3186b65 PM |
615 | } |
616 | ||
6e9af7e4 PM |
617 | sub bits |
618 | { | |
619 | # called from B::Deparse.pm | |
620 | ||
621 | push @_, 'all' unless @_; | |
622 | ||
623 | my $mask; | |
599cee73 PM |
624 | my $catmask ; |
625 | my $fatal = 0 ; | |
6e9af7e4 PM |
626 | my $no_fatal = 0 ; |
627 | ||
628 | foreach my $word ( @_ ) { | |
629 | if ($word eq 'FATAL') { | |
327afb7f | 630 | $fatal = 1; |
6e9af7e4 PM |
631 | $no_fatal = 0; |
632 | } | |
633 | elsif ($word eq 'NONFATAL') { | |
634 | $fatal = 0; | |
635 | $no_fatal = 1; | |
327afb7f | 636 | } |
d3a7d8c7 GS |
637 | elsif ($catmask = $Bits{$word}) { |
638 | $mask |= $catmask ; | |
639 | $mask |= $DeadBits{$word} if $fatal ; | |
6e9af7e4 | 640 | $mask &= ~($DeadBits{$word}|$All) if $no_fatal ; |
599cee73 | 641 | } |
d3a7d8c7 | 642 | else |
c3186b65 | 643 | { Croaker("Unknown warnings category '$word'")} |
599cee73 PM |
644 | } |
645 | ||
646 | return $mask ; | |
647 | } | |
648 | ||
6e9af7e4 PM |
649 | sub import |
650 | { | |
599cee73 | 651 | shift; |
6e9af7e4 PM |
652 | |
653 | my $catmask ; | |
654 | my $fatal = 0 ; | |
655 | my $no_fatal = 0 ; | |
656 | ||
f1f33818 | 657 | my $mask = ${^WARNING_BITS} ; |
6e9af7e4 | 658 | |
f1f33818 PM |
659 | if (vec($mask, $Offsets{'all'}, 1)) { |
660 | $mask |= $Bits{'all'} ; | |
661 | $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); | |
662 | } | |
6e9af7e4 PM |
663 | |
664 | push @_, 'all' unless @_; | |
665 | ||
666 | foreach my $word ( @_ ) { | |
667 | if ($word eq 'FATAL') { | |
668 | $fatal = 1; | |
669 | $no_fatal = 0; | |
670 | } | |
671 | elsif ($word eq 'NONFATAL') { | |
672 | $fatal = 0; | |
673 | $no_fatal = 1; | |
674 | } | |
675 | elsif ($catmask = $Bits{$word}) { | |
676 | $mask |= $catmask ; | |
677 | $mask |= $DeadBits{$word} if $fatal ; | |
678 | $mask &= ~($DeadBits{$word}|$All) if $no_fatal ; | |
679 | } | |
680 | else | |
681 | { Croaker("Unknown warnings category '$word'")} | |
682 | } | |
683 | ||
684 | ${^WARNING_BITS} = $mask ; | |
599cee73 PM |
685 | } |
686 | ||
6e9af7e4 PM |
687 | sub unimport |
688 | { | |
599cee73 | 689 | shift; |
6e9af7e4 PM |
690 | |
691 | my $catmask ; | |
d3a7d8c7 | 692 | my $mask = ${^WARNING_BITS} ; |
6e9af7e4 | 693 | |
d3a7d8c7 | 694 | if (vec($mask, $Offsets{'all'}, 1)) { |
f1f33818 | 695 | $mask |= $Bits{'all'} ; |
d3a7d8c7 GS |
696 | $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
697 | } | |
6e9af7e4 PM |
698 | |
699 | push @_, 'all' unless @_; | |
700 | ||
701 | foreach my $word ( @_ ) { | |
702 | if ($word eq 'FATAL') { | |
703 | next; | |
704 | } | |
705 | elsif ($catmask = $Bits{$word}) { | |
706 | $mask &= ~($catmask | $DeadBits{$word} | $All); | |
707 | } | |
708 | else | |
709 | { Croaker("Unknown warnings category '$word'")} | |
710 | } | |
711 | ||
712 | ${^WARNING_BITS} = $mask ; | |
599cee73 PM |
713 | } |
714 | ||
9df0f64f MK |
715 | my %builtin_type; @builtin_type{qw(SCALAR ARRAY HASH CODE REF GLOB LVALUE Regexp)} = (); |
716 | ||
7e6d00f8 | 717 | sub __chk |
599cee73 | 718 | { |
d3a7d8c7 GS |
719 | my $category ; |
720 | my $offset ; | |
7e6d00f8 | 721 | my $isobj = 0 ; |
d3a7d8c7 GS |
722 | |
723 | if (@_) { | |
724 | # check the category supplied. | |
725 | $category = shift ; | |
9df0f64f MK |
726 | if (my $type = ref $category) { |
727 | Croaker("not an object") | |
728 | if exists $builtin_type{$type}; | |
729 | $category = $type; | |
7e6d00f8 PM |
730 | $isobj = 1 ; |
731 | } | |
d3a7d8c7 | 732 | $offset = $Offsets{$category}; |
c3186b65 | 733 | Croaker("Unknown warnings category '$category'") |
d3a7d8c7 GS |
734 | unless defined $offset; |
735 | } | |
736 | else { | |
0ca4541c | 737 | $category = (caller(1))[0] ; |
d3a7d8c7 | 738 | $offset = $Offsets{$category}; |
c3186b65 | 739 | Croaker("package '$category' not registered for warnings") |
d3a7d8c7 GS |
740 | unless defined $offset ; |
741 | } | |
742 | ||
0ca4541c | 743 | my $this_pkg = (caller(1))[0] ; |
7e6d00f8 PM |
744 | my $i = 2 ; |
745 | my $pkg ; | |
746 | ||
747 | if ($isobj) { | |
748 | while (do { { package DB; $pkg = (caller($i++))[0] } } ) { | |
749 | last unless @DB::args && $DB::args[0] =~ /^$category=/ ; | |
750 | } | |
751 | $i -= 2 ; | |
752 | } | |
753 | else { | |
4f527b71 | 754 | $i = _error_loc(); # see where Carp will allocate the error |
7e6d00f8 PM |
755 | } |
756 | ||
0ca4541c | 757 | my $callers_bitmask = (caller($i))[9] ; |
7e6d00f8 PM |
758 | return ($callers_bitmask, $offset, $i) ; |
759 | } | |
760 | ||
4f527b71 AS |
761 | sub _error_loc { |
762 | require Carp::Heavy; | |
763 | goto &Carp::short_error_loc; # don't introduce another stack frame | |
764 | } | |
765 | ||
7e6d00f8 PM |
766 | sub enabled |
767 | { | |
c3186b65 | 768 | Croaker("Usage: warnings::enabled([category])") |
7e6d00f8 PM |
769 | unless @_ == 1 || @_ == 0 ; |
770 | ||
771 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; | |
772 | ||
773 | return 0 unless defined $callers_bitmask ; | |
d3a7d8c7 GS |
774 | return vec($callers_bitmask, $offset, 1) || |
775 | vec($callers_bitmask, $Offsets{'all'}, 1) ; | |
599cee73 PM |
776 | } |
777 | ||
d3a7d8c7 | 778 | |
e476b1b5 GS |
779 | sub warn |
780 | { | |
c3186b65 | 781 | Croaker("Usage: warnings::warn([category,] 'message')") |
d3a7d8c7 | 782 | unless @_ == 2 || @_ == 1 ; |
d3a7d8c7 | 783 | |
7e6d00f8 PM |
784 | my $message = pop ; |
785 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; | |
09e96b99 | 786 | require Carp; |
8becbb3b | 787 | Carp::croak($message) |
d3a7d8c7 GS |
788 | if vec($callers_bitmask, $offset+1, 1) || |
789 | vec($callers_bitmask, $Offsets{'all'}+1, 1) ; | |
8becbb3b | 790 | Carp::carp($message) ; |
e476b1b5 GS |
791 | } |
792 | ||
7e6d00f8 PM |
793 | sub warnif |
794 | { | |
c3186b65 | 795 | Croaker("Usage: warnings::warnif([category,] 'message')") |
7e6d00f8 PM |
796 | unless @_ == 2 || @_ == 1 ; |
797 | ||
798 | my $message = pop ; | |
799 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; | |
7e6d00f8 | 800 | |
0ca4541c | 801 | return |
7e6d00f8 PM |
802 | unless defined $callers_bitmask && |
803 | (vec($callers_bitmask, $offset, 1) || | |
804 | vec($callers_bitmask, $Offsets{'all'}, 1)) ; | |
805 | ||
09e96b99 | 806 | require Carp; |
8becbb3b | 807 | Carp::croak($message) |
7e6d00f8 PM |
808 | if vec($callers_bitmask, $offset+1, 1) || |
809 | vec($callers_bitmask, $Offsets{'all'}+1, 1) ; | |
810 | ||
8becbb3b | 811 | Carp::carp($message) ; |
7e6d00f8 | 812 | } |
0d658bf5 | 813 | |
599cee73 | 814 | 1; |