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' ; | |
260 | /* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! | |
4438c4b7 | 261 | This file is built by warnings.pl |
599cee73 PM |
262 | Any changes made here will be lost! |
263 | */ | |
264 | ||
265 | ||
0453d815 PM |
266 | #define Off(x) ((x) / 8) |
267 | #define Bit(x) (1 << ((x) % 8)) | |
599cee73 PM |
268 | #define IsSet(a, x) ((a)[Off(x)] & Bit(x)) |
269 | ||
0453d815 | 270 | |
599cee73 | 271 | #define G_WARN_OFF 0 /* $^W == 0 */ |
0453d815 | 272 | #define G_WARN_ON 1 /* -w flag and $^W != 0 */ |
599cee73 PM |
273 | #define G_WARN_ALL_ON 2 /* -W flag */ |
274 | #define G_WARN_ALL_OFF 4 /* -X flag */ | |
0453d815 | 275 | #define G_WARN_ONCE 8 /* set if 'once' ever enabled */ |
599cee73 PM |
276 | #define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF) |
277 | ||
d3a7d8c7 GS |
278 | #define pWARN_STD Nullsv |
279 | #define pWARN_ALL (Nullsv+1) /* use warnings 'all' */ | |
280 | #define pWARN_NONE (Nullsv+2) /* no warnings 'all' */ | |
599cee73 | 281 | |
d3a7d8c7 GS |
282 | #define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \ |
283 | (x) == pWARN_NONE) | |
599cee73 PM |
284 | EOM |
285 | ||
d3a7d8c7 GS |
286 | my $offset = 0 ; |
287 | ||
288 | $index = $offset ; | |
289 | #@{ $list{"all"} } = walk ($tree) ; | |
0d658bf5 PM |
290 | valueWalk ($tree) ; |
291 | my $index = orderValues(); | |
599cee73 | 292 | |
12bcd1a6 PM |
293 | die <<EOM if $index > 255 ; |
294 | Too many warnings categories -- max is 255 | |
295 | rewrite packWARN* & unpackWARN* macros | |
296 | EOM | |
599cee73 | 297 | |
0d658bf5 PM |
298 | walk ($tree) ; |
299 | ||
599cee73 PM |
300 | $index *= 2 ; |
301 | my $warn_size = int($index / 8) + ($index % 8 != 0) ; | |
302 | ||
303 | my $k ; | |
0d658bf5 PM |
304 | my $last_ver = 0; |
305 | foreach $k (sort { $a <=> $b } keys %ValueToName) { | |
306 | my ($name, $version) = @{ $ValueToName{$k} }; | |
307 | print WARN "\n/* Warnings Categories added in Perl $version */\n\n" | |
308 | if $last_ver != $version ; | |
309 | print WARN tab(5, "#define WARN_$name"), "$k\n" ; | |
310 | $last_ver = $version ; | |
599cee73 PM |
311 | } |
312 | print WARN "\n" ; | |
313 | ||
314 | print WARN tab(5, '#define WARNsize'), "$warn_size\n" ; | |
315 | #print WARN tab(5, '#define WARN_ALLstring'), '"', ('\377' x $warn_size) , "\"\n" ; | |
316 | print WARN tab(5, '#define WARN_ALLstring'), '"', ('\125' x $warn_size) , "\"\n" ; | |
317 | print WARN tab(5, '#define WARN_NONEstring'), '"', ('\0' x $warn_size) , "\"\n" ; | |
317ea90d MS |
318 | my $WARN_TAINTstring = mkOct($warn_size, map $_ * 2, @{ $list{'taint'} }); |
319 | ||
320 | print WARN tab(5, '#define WARN_TAINTstring'), qq["$WARN_TAINTstring"\n] ; | |
599cee73 PM |
321 | |
322 | print WARN <<'EOM'; | |
323 | ||
d5a71f30 GS |
324 | #define isLEXWARN_on (PL_curcop->cop_warnings != pWARN_STD) |
325 | #define isLEXWARN_off (PL_curcop->cop_warnings == pWARN_STD) | |
326 | #define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE)) | |
327 | #define isWARN_on(c,x) (IsSet(SvPVX(c), 2*(x))) | |
328 | #define isWARNf_on(c,x) (IsSet(SvPVX(c), 2*(x)+1)) | |
329 | ||
d5a71f30 GS |
330 | #define ckWARN(x) \ |
331 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
332 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
333 | isWARN_on(PL_curcop->cop_warnings, x) ) ) \ | |
334 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
335 | ||
336 | #define ckWARN2(x,y) \ | |
337 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
338 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
339 | isWARN_on(PL_curcop->cop_warnings, x) || \ | |
340 | isWARN_on(PL_curcop->cop_warnings, y) ) ) \ | |
341 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
342 | ||
12bcd1a6 PM |
343 | #define ckWARN3(x,y,z) \ |
344 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
345 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
346 | isWARN_on(PL_curcop->cop_warnings, x) || \ | |
347 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
348 | isWARN_on(PL_curcop->cop_warnings, z) ) ) \ | |
349 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
350 | ||
351 | #define ckWARN4(x,y,z,t) \ | |
352 | ( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ | |
353 | (PL_curcop->cop_warnings == pWARN_ALL || \ | |
354 | isWARN_on(PL_curcop->cop_warnings, x) || \ | |
355 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
356 | isWARN_on(PL_curcop->cop_warnings, z) || \ | |
357 | isWARN_on(PL_curcop->cop_warnings, t) ) ) \ | |
358 | || (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) | |
359 | ||
d5a71f30 GS |
360 | #define ckWARN_d(x) \ |
361 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
362 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
363 | isWARN_on(PL_curcop->cop_warnings, x) ) ) | |
364 | ||
365 | #define ckWARN2_d(x,y) \ | |
366 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
367 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
368 | (isWARN_on(PL_curcop->cop_warnings, x) || \ | |
369 | isWARN_on(PL_curcop->cop_warnings, y) ) ) ) | |
370 | ||
12bcd1a6 PM |
371 | #define ckWARN3_d(x,y,z) \ |
372 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
373 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
374 | (isWARN_on(PL_curcop->cop_warnings, x) || \ | |
375 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
376 | isWARN_on(PL_curcop->cop_warnings, z) ) ) ) | |
377 | ||
378 | #define ckWARN4_d(x,y,z,t) \ | |
379 | (isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ | |
380 | (PL_curcop->cop_warnings != pWARN_NONE && \ | |
381 | (isWARN_on(PL_curcop->cop_warnings, x) || \ | |
382 | isWARN_on(PL_curcop->cop_warnings, y) || \ | |
383 | isWARN_on(PL_curcop->cop_warnings, z) || \ | |
384 | isWARN_on(PL_curcop->cop_warnings, t) ) ) ) | |
385 | ||
386 | #define packWARN(a) (a ) | |
387 | #define packWARN2(a,b) ((a) | (b)<<8 ) | |
388 | #define packWARN3(a,b,c) ((a) | (b)<<8 | (c) <<16 ) | |
389 | #define packWARN4(a,b,c,d) ((a) | (b)<<8 | (c) <<16 | (d) <<24) | |
390 | ||
391 | #define unpackWARN1(x) ((x) & 0xFF) | |
392 | #define unpackWARN2(x) (((x) >>8) & 0xFF) | |
393 | #define unpackWARN3(x) (((x) >>16) & 0xFF) | |
394 | #define unpackWARN4(x) (((x) >>24) & 0xFF) | |
395 | ||
396 | #define ckDEAD(x) \ | |
397 | ( ! specialWARN(PL_curcop->cop_warnings) && \ | |
398 | ( isWARNf_on(PL_curcop->cop_warnings, WARN_ALL) || \ | |
399 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN1(x)) || \ | |
400 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN2(x)) || \ | |
401 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN3(x)) || \ | |
402 | isWARNf_on(PL_curcop->cop_warnings, unpackWARN4(x)))) | |
403 | ||
4438c4b7 | 404 | /* end of file warnings.h */ |
599cee73 PM |
405 | |
406 | EOM | |
407 | ||
408 | close WARN ; | |
409 | ||
410 | while (<DATA>) { | |
411 | last if /^KEYWORDS$/ ; | |
412 | print PM $_ ; | |
413 | } | |
414 | ||
d3a7d8c7 GS |
415 | #$list{'all'} = [ $offset .. 8 * ($warn_size/2) - 1 ] ; |
416 | ||
0d658bf5 | 417 | $last_ver = 0; |
53c33732 | 418 | print PM "our %Offsets = (\n" ; |
0d658bf5 PM |
419 | foreach my $k (sort { $a <=> $b } keys %ValueToName) { |
420 | my ($name, $version) = @{ $ValueToName{$k} }; | |
421 | $name = lc $name; | |
d3a7d8c7 | 422 | $k *= 2 ; |
0d658bf5 PM |
423 | if ( $last_ver != $version ) { |
424 | print PM "\n"; | |
425 | print PM tab(4, " # Warnings Categories added in Perl $version"); | |
426 | print PM "\n\n"; | |
427 | } | |
428 | print PM tab(4, " '$name'"), "=> $k,\n" ; | |
429 | $last_ver = $version; | |
d3a7d8c7 GS |
430 | } |
431 | ||
432 | print PM " );\n\n" ; | |
433 | ||
53c33732 | 434 | print PM "our %Bits = (\n" ; |
599cee73 PM |
435 | foreach $k (sort keys %list) { |
436 | ||
437 | my $v = $list{$k} ; | |
438 | my @list = sort { $a <=> $b } @$v ; | |
439 | ||
0ca4541c NIS |
440 | print PM tab(4, " '$k'"), '=> "', |
441 | # mkHex($warn_size, @list), | |
442 | mkHex($warn_size, map $_ * 2 , @list), | |
599cee73 PM |
443 | '", # [', mkRange(@list), "]\n" ; |
444 | } | |
445 | ||
446 | print PM " );\n\n" ; | |
447 | ||
53c33732 | 448 | print PM "our %DeadBits = (\n" ; |
599cee73 PM |
449 | foreach $k (sort keys %list) { |
450 | ||
451 | my $v = $list{$k} ; | |
452 | my @list = sort { $a <=> $b } @$v ; | |
453 | ||
0ca4541c NIS |
454 | print PM tab(4, " '$k'"), '=> "', |
455 | # mkHex($warn_size, @list), | |
456 | mkHex($warn_size, map $_ * 2 + 1 , @list), | |
599cee73 PM |
457 | '", # [', mkRange(@list), "]\n" ; |
458 | } | |
459 | ||
460 | print PM " );\n\n" ; | |
d3a7d8c7 GS |
461 | print PM '$NONE = "', ('\0' x $warn_size) , "\";\n" ; |
462 | print PM '$LAST_BIT = ' . "$index ;\n" ; | |
463 | print PM '$BYTES = ' . "$warn_size ;\n" ; | |
599cee73 PM |
464 | while (<DATA>) { |
465 | print PM $_ ; | |
466 | } | |
467 | ||
468 | close PM ; | |
469 | ||
470 | __END__ | |
471 | ||
38875929 | 472 | # !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
4438c4b7 | 473 | # This file was created by warnings.pl |
599cee73 PM |
474 | # Any changes made here will be lost. |
475 | # | |
476 | ||
4438c4b7 | 477 | package warnings; |
599cee73 | 478 | |
09e96b99 | 479 | our $VERSION = '1.04'; |
b75c8c73 | 480 | |
599cee73 PM |
481 | =head1 NAME |
482 | ||
4438c4b7 | 483 | warnings - Perl pragma to control optional warnings |
599cee73 PM |
484 | |
485 | =head1 SYNOPSIS | |
486 | ||
4438c4b7 JH |
487 | use warnings; |
488 | no warnings; | |
599cee73 | 489 | |
4438c4b7 JH |
490 | use warnings "all"; |
491 | no warnings "all"; | |
599cee73 | 492 | |
d3a7d8c7 GS |
493 | use warnings::register; |
494 | if (warnings::enabled()) { | |
495 | warnings::warn("some warning"); | |
496 | } | |
497 | ||
498 | if (warnings::enabled("void")) { | |
e476b1b5 GS |
499 | warnings::warn("void", "some warning"); |
500 | } | |
501 | ||
7e6d00f8 PM |
502 | if (warnings::enabled($object)) { |
503 | warnings::warn($object, "some warning"); | |
504 | } | |
505 | ||
721f911b PM |
506 | warnings::warnif("some warning"); |
507 | warnings::warnif("void", "some warning"); | |
508 | warnings::warnif($object, "some warning"); | |
7e6d00f8 | 509 | |
599cee73 PM |
510 | =head1 DESCRIPTION |
511 | ||
fe2e802c EM |
512 | The C<warnings> pragma is a replacement for the command line flag C<-w>, |
513 | but the pragma is limited to the enclosing block, while the flag is global. | |
514 | See L<perllexwarn> for more information. | |
515 | ||
0453d815 PM |
516 | If no import list is supplied, all possible warnings are either enabled |
517 | or disabled. | |
599cee73 | 518 | |
0ca4541c | 519 | A number of functions are provided to assist module authors. |
e476b1b5 GS |
520 | |
521 | =over 4 | |
522 | ||
d3a7d8c7 GS |
523 | =item use warnings::register |
524 | ||
7e6d00f8 PM |
525 | Creates a new warnings category with the same name as the package where |
526 | the call to the pragma is used. | |
527 | ||
528 | =item warnings::enabled() | |
529 | ||
530 | Use the warnings category with the same name as the current package. | |
531 | ||
532 | Return TRUE if that warnings category is enabled in the calling module. | |
533 | Otherwise returns FALSE. | |
534 | ||
535 | =item warnings::enabled($category) | |
536 | ||
537 | Return TRUE if the warnings category, C<$category>, is enabled in the | |
538 | calling module. | |
539 | Otherwise returns FALSE. | |
540 | ||
541 | =item warnings::enabled($object) | |
542 | ||
543 | Use the name of the class for the object reference, C<$object>, as the | |
544 | warnings category. | |
545 | ||
546 | Return TRUE if that warnings category is enabled in the first scope | |
547 | where the object is used. | |
548 | Otherwise returns FALSE. | |
549 | ||
550 | =item warnings::warn($message) | |
551 | ||
552 | Print C<$message> to STDERR. | |
553 | ||
554 | Use the warnings category with the same name as the current package. | |
555 | ||
556 | If that warnings category has been set to "FATAL" in the calling module | |
557 | then die. Otherwise return. | |
558 | ||
559 | =item warnings::warn($category, $message) | |
560 | ||
561 | Print C<$message> to STDERR. | |
562 | ||
563 | If the warnings category, C<$category>, has been set to "FATAL" in the | |
564 | calling module then die. Otherwise return. | |
d3a7d8c7 | 565 | |
7e6d00f8 | 566 | =item warnings::warn($object, $message) |
e476b1b5 | 567 | |
7e6d00f8 | 568 | Print C<$message> to STDERR. |
e476b1b5 | 569 | |
7e6d00f8 PM |
570 | Use the name of the class for the object reference, C<$object>, as the |
571 | warnings category. | |
e476b1b5 | 572 | |
7e6d00f8 PM |
573 | If that warnings category has been set to "FATAL" in the scope where C<$object> |
574 | is first used then die. Otherwise return. | |
599cee73 | 575 | |
e476b1b5 | 576 | |
7e6d00f8 PM |
577 | =item warnings::warnif($message) |
578 | ||
579 | Equivalent to: | |
580 | ||
581 | if (warnings::enabled()) | |
582 | { warnings::warn($message) } | |
583 | ||
584 | =item warnings::warnif($category, $message) | |
585 | ||
586 | Equivalent to: | |
587 | ||
588 | if (warnings::enabled($category)) | |
589 | { warnings::warn($category, $message) } | |
590 | ||
591 | =item warnings::warnif($object, $message) | |
592 | ||
593 | Equivalent to: | |
594 | ||
595 | if (warnings::enabled($object)) | |
596 | { warnings::warn($object, $message) } | |
d3a7d8c7 | 597 | |
e476b1b5 GS |
598 | =back |
599 | ||
749f83fa | 600 | See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>. |
599cee73 PM |
601 | |
602 | =cut | |
603 | ||
599cee73 PM |
604 | KEYWORDS |
605 | ||
d3a7d8c7 GS |
606 | $All = "" ; vec($All, $Offsets{'all'}, 2) = 3 ; |
607 | ||
c3186b65 PM |
608 | sub Croaker |
609 | { | |
09e96b99 | 610 | require Carp; |
c3186b65 | 611 | delete $Carp::CarpInternal{'warnings'}; |
8becbb3b | 612 | Carp::croak(@_); |
c3186b65 PM |
613 | } |
614 | ||
6e9af7e4 PM |
615 | sub bits |
616 | { | |
617 | # called from B::Deparse.pm | |
618 | ||
619 | push @_, 'all' unless @_; | |
620 | ||
621 | my $mask; | |
599cee73 PM |
622 | my $catmask ; |
623 | my $fatal = 0 ; | |
6e9af7e4 PM |
624 | my $no_fatal = 0 ; |
625 | ||
626 | foreach my $word ( @_ ) { | |
627 | if ($word eq 'FATAL') { | |
327afb7f | 628 | $fatal = 1; |
6e9af7e4 PM |
629 | $no_fatal = 0; |
630 | } | |
631 | elsif ($word eq 'NONFATAL') { | |
632 | $fatal = 0; | |
633 | $no_fatal = 1; | |
327afb7f | 634 | } |
d3a7d8c7 GS |
635 | elsif ($catmask = $Bits{$word}) { |
636 | $mask |= $catmask ; | |
637 | $mask |= $DeadBits{$word} if $fatal ; | |
6e9af7e4 | 638 | $mask &= ~($DeadBits{$word}|$All) if $no_fatal ; |
599cee73 | 639 | } |
d3a7d8c7 | 640 | else |
c3186b65 | 641 | { Croaker("Unknown warnings category '$word'")} |
599cee73 PM |
642 | } |
643 | ||
644 | return $mask ; | |
645 | } | |
646 | ||
6e9af7e4 PM |
647 | sub import |
648 | { | |
599cee73 | 649 | shift; |
6e9af7e4 PM |
650 | |
651 | my $catmask ; | |
652 | my $fatal = 0 ; | |
653 | my $no_fatal = 0 ; | |
654 | ||
f1f33818 | 655 | my $mask = ${^WARNING_BITS} ; |
6e9af7e4 | 656 | |
f1f33818 PM |
657 | if (vec($mask, $Offsets{'all'}, 1)) { |
658 | $mask |= $Bits{'all'} ; | |
659 | $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); | |
660 | } | |
6e9af7e4 PM |
661 | |
662 | push @_, 'all' unless @_; | |
663 | ||
664 | foreach my $word ( @_ ) { | |
665 | if ($word eq 'FATAL') { | |
666 | $fatal = 1; | |
667 | $no_fatal = 0; | |
668 | } | |
669 | elsif ($word eq 'NONFATAL') { | |
670 | $fatal = 0; | |
671 | $no_fatal = 1; | |
672 | } | |
673 | elsif ($catmask = $Bits{$word}) { | |
674 | $mask |= $catmask ; | |
675 | $mask |= $DeadBits{$word} if $fatal ; | |
676 | $mask &= ~($DeadBits{$word}|$All) if $no_fatal ; | |
677 | } | |
678 | else | |
679 | { Croaker("Unknown warnings category '$word'")} | |
680 | } | |
681 | ||
682 | ${^WARNING_BITS} = $mask ; | |
599cee73 PM |
683 | } |
684 | ||
6e9af7e4 PM |
685 | sub unimport |
686 | { | |
599cee73 | 687 | shift; |
6e9af7e4 PM |
688 | |
689 | my $catmask ; | |
d3a7d8c7 | 690 | my $mask = ${^WARNING_BITS} ; |
6e9af7e4 | 691 | |
d3a7d8c7 | 692 | if (vec($mask, $Offsets{'all'}, 1)) { |
f1f33818 | 693 | $mask |= $Bits{'all'} ; |
d3a7d8c7 GS |
694 | $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
695 | } | |
6e9af7e4 PM |
696 | |
697 | push @_, 'all' unless @_; | |
698 | ||
699 | foreach my $word ( @_ ) { | |
700 | if ($word eq 'FATAL') { | |
701 | next; | |
702 | } | |
703 | elsif ($catmask = $Bits{$word}) { | |
704 | $mask &= ~($catmask | $DeadBits{$word} | $All); | |
705 | } | |
706 | else | |
707 | { Croaker("Unknown warnings category '$word'")} | |
708 | } | |
709 | ||
710 | ${^WARNING_BITS} = $mask ; | |
599cee73 PM |
711 | } |
712 | ||
9df0f64f MK |
713 | my %builtin_type; @builtin_type{qw(SCALAR ARRAY HASH CODE REF GLOB LVALUE Regexp)} = (); |
714 | ||
7e6d00f8 | 715 | sub __chk |
599cee73 | 716 | { |
d3a7d8c7 GS |
717 | my $category ; |
718 | my $offset ; | |
7e6d00f8 | 719 | my $isobj = 0 ; |
d3a7d8c7 GS |
720 | |
721 | if (@_) { | |
722 | # check the category supplied. | |
723 | $category = shift ; | |
9df0f64f MK |
724 | if (my $type = ref $category) { |
725 | Croaker("not an object") | |
726 | if exists $builtin_type{$type}; | |
727 | $category = $type; | |
7e6d00f8 PM |
728 | $isobj = 1 ; |
729 | } | |
d3a7d8c7 | 730 | $offset = $Offsets{$category}; |
c3186b65 | 731 | Croaker("Unknown warnings category '$category'") |
d3a7d8c7 GS |
732 | unless defined $offset; |
733 | } | |
734 | else { | |
0ca4541c | 735 | $category = (caller(1))[0] ; |
d3a7d8c7 | 736 | $offset = $Offsets{$category}; |
c3186b65 | 737 | Croaker("package '$category' not registered for warnings") |
d3a7d8c7 GS |
738 | unless defined $offset ; |
739 | } | |
740 | ||
0ca4541c | 741 | my $this_pkg = (caller(1))[0] ; |
7e6d00f8 PM |
742 | my $i = 2 ; |
743 | my $pkg ; | |
744 | ||
745 | if ($isobj) { | |
746 | while (do { { package DB; $pkg = (caller($i++))[0] } } ) { | |
747 | last unless @DB::args && $DB::args[0] =~ /^$category=/ ; | |
748 | } | |
749 | $i -= 2 ; | |
750 | } | |
751 | else { | |
4f527b71 | 752 | $i = _error_loc(); # see where Carp will allocate the error |
7e6d00f8 PM |
753 | } |
754 | ||
0ca4541c | 755 | my $callers_bitmask = (caller($i))[9] ; |
7e6d00f8 PM |
756 | return ($callers_bitmask, $offset, $i) ; |
757 | } | |
758 | ||
4f527b71 AS |
759 | sub _error_loc { |
760 | require Carp::Heavy; | |
761 | goto &Carp::short_error_loc; # don't introduce another stack frame | |
762 | } | |
763 | ||
7e6d00f8 PM |
764 | sub enabled |
765 | { | |
c3186b65 | 766 | Croaker("Usage: warnings::enabled([category])") |
7e6d00f8 PM |
767 | unless @_ == 1 || @_ == 0 ; |
768 | ||
769 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; | |
770 | ||
771 | return 0 unless defined $callers_bitmask ; | |
d3a7d8c7 GS |
772 | return vec($callers_bitmask, $offset, 1) || |
773 | vec($callers_bitmask, $Offsets{'all'}, 1) ; | |
599cee73 PM |
774 | } |
775 | ||
d3a7d8c7 | 776 | |
e476b1b5 GS |
777 | sub warn |
778 | { | |
c3186b65 | 779 | Croaker("Usage: warnings::warn([category,] 'message')") |
d3a7d8c7 | 780 | unless @_ == 2 || @_ == 1 ; |
d3a7d8c7 | 781 | |
7e6d00f8 PM |
782 | my $message = pop ; |
783 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; | |
09e96b99 | 784 | require Carp; |
8becbb3b | 785 | Carp::croak($message) |
d3a7d8c7 GS |
786 | if vec($callers_bitmask, $offset+1, 1) || |
787 | vec($callers_bitmask, $Offsets{'all'}+1, 1) ; | |
8becbb3b | 788 | Carp::carp($message) ; |
e476b1b5 GS |
789 | } |
790 | ||
7e6d00f8 PM |
791 | sub warnif |
792 | { | |
c3186b65 | 793 | Croaker("Usage: warnings::warnif([category,] 'message')") |
7e6d00f8 PM |
794 | unless @_ == 2 || @_ == 1 ; |
795 | ||
796 | my $message = pop ; | |
797 | my ($callers_bitmask, $offset, $i) = __chk(@_) ; | |
7e6d00f8 | 798 | |
0ca4541c | 799 | return |
7e6d00f8 PM |
800 | unless defined $callers_bitmask && |
801 | (vec($callers_bitmask, $offset, 1) || | |
802 | vec($callers_bitmask, $Offsets{'all'}, 1)) ; | |
803 | ||
09e96b99 | 804 | require Carp; |
8becbb3b | 805 | Carp::croak($message) |
7e6d00f8 PM |
806 | if vec($callers_bitmask, $offset+1, 1) || |
807 | vec($callers_bitmask, $Offsets{'all'}+1, 1) ; | |
808 | ||
8becbb3b | 809 | Carp::carp($message) ; |
7e6d00f8 | 810 | } |
0d658bf5 | 811 | |
599cee73 | 812 | 1; |