| 1 |
#!/usr/bin/perl |
| 2 |
|
| 3 |
$VERSION = '1.02'; |
| 4 |
|
| 5 |
BEGIN { |
| 6 |
push @INC, './lib'; |
| 7 |
} |
| 8 |
use strict ; |
| 9 |
|
| 10 |
sub DEFAULT_ON () { 1 } |
| 11 |
sub DEFAULT_OFF () { 2 } |
| 12 |
|
| 13 |
my $tree = { |
| 14 |
|
| 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], |
| 52 |
'y2k' => [ 5.008, DEFAULT_OFF], |
| 53 |
'untie' => [ 5.008, DEFAULT_OFF], |
| 54 |
'substr' => [ 5.008, DEFAULT_OFF], |
| 55 |
'taint' => [ 5.008, DEFAULT_OFF], |
| 56 |
'signal' => [ 5.008, DEFAULT_OFF], |
| 57 |
'closure' => [ 5.008, DEFAULT_OFF], |
| 58 |
'overflow' => [ 5.008, DEFAULT_OFF], |
| 59 |
'portable' => [ 5.008, DEFAULT_OFF], |
| 60 |
'utf8' => [ 5.008, DEFAULT_OFF], |
| 61 |
'exiting' => [ 5.008, DEFAULT_OFF], |
| 62 |
'pack' => [ 5.008, DEFAULT_OFF], |
| 63 |
'unpack' => [ 5.008, DEFAULT_OFF], |
| 64 |
'threads' => [ 5.008, DEFAULT_OFF], |
| 65 |
#'default' => [ 5.008, DEFAULT_ON ], |
| 66 |
}], |
| 67 |
} ; |
| 68 |
|
| 69 |
########################################################################### |
| 70 |
sub tab { |
| 71 |
my($l, $t) = @_; |
| 72 |
$t .= "\t" x ($l - (length($t) + 1) / 8); |
| 73 |
$t; |
| 74 |
} |
| 75 |
|
| 76 |
########################################################################### |
| 77 |
|
| 78 |
my %list ; |
| 79 |
my %Value ; |
| 80 |
my %ValueToName ; |
| 81 |
my %NameToValue ; |
| 82 |
my $index ; |
| 83 |
|
| 84 |
my %v_list = () ; |
| 85 |
|
| 86 |
sub valueWalk |
| 87 |
{ |
| 88 |
my $tre = shift ; |
| 89 |
my @list = () ; |
| 90 |
my ($k, $v) ; |
| 91 |
|
| 92 |
foreach $k (sort keys %$tre) { |
| 93 |
$v = $tre->{$k}; |
| 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 $v ne 'ARRAY' ; |
| 97 |
|
| 98 |
my ($ver, $rest) = @{ $v } ; |
| 99 |
push @{ $v_list{$ver} }, $k; |
| 100 |
|
| 101 |
if (ref $rest) |
| 102 |
{ valueWalk ($rest) } |
| 103 |
|
| 104 |
} |
| 105 |
|
| 106 |
} |
| 107 |
|
| 108 |
sub orderValues |
| 109 |
{ |
| 110 |
my $index = 0; |
| 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 ++ ; |
| 115 |
} |
| 116 |
} |
| 117 |
|
| 118 |
return $index ; |
| 119 |
} |
| 120 |
|
| 121 |
########################################################################### |
| 122 |
|
| 123 |
sub walk |
| 124 |
{ |
| 125 |
my $tre = shift ; |
| 126 |
my @list = () ; |
| 127 |
my ($k, $v) ; |
| 128 |
|
| 129 |
foreach $k (sort keys %$tre) { |
| 130 |
$v = $tre->{$k}; |
| 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 $v ne 'ARRAY' ; |
| 138 |
|
| 139 |
my ($ver, $rest) = @{ $v } ; |
| 140 |
if (ref $rest) |
| 141 |
{ push (@{ $list{$k} }, walk ($rest)) } |
| 142 |
|
| 143 |
push @list, @{ $list{$k} } ; |
| 144 |
} |
| 145 |
|
| 146 |
return @list ; |
| 147 |
} |
| 148 |
|
| 149 |
########################################################################### |
| 150 |
|
| 151 |
sub mkRange |
| 152 |
{ |
| 153 |
my @a = @_ ; |
| 154 |
my @out = @a ; |
| 155 |
my $i ; |
| 156 |
|
| 157 |
|
| 158 |
for ($i = 1 ; $i < @a; ++ $i) { |
| 159 |
$out[$i] = ".." |
| 160 |
if $a[$i] == $a[$i - 1] + 1 && $a[$i] + 1 == $a[$i + 1] ; |
| 161 |
} |
| 162 |
|
| 163 |
my $out = join(",",@out); |
| 164 |
|
| 165 |
$out =~ s/,(\.\.,)+/../g ; |
| 166 |
return $out; |
| 167 |
} |
| 168 |
|
| 169 |
########################################################################### |
| 170 |
sub printTree |
| 171 |
{ |
| 172 |
my $tre = shift ; |
| 173 |
my $prefix = shift ; |
| 174 |
my ($k, $v) ; |
| 175 |
|
| 176 |
my $max = (sort {$a <=> $b} map { length $_ } keys %$tre)[-1] ; |
| 177 |
my @keys = sort keys %$tre ; |
| 178 |
|
| 179 |
while ($k = shift @keys) { |
| 180 |
$v = $tre->{$k}; |
| 181 |
die "Value associated with key '$k' is not an ARRAY reference" |
| 182 |
if !ref $v || ref $v ne 'ARRAY' ; |
| 183 |
|
| 184 |
my $offset ; |
| 185 |
if ($tre ne $tree) { |
| 186 |
print $prefix . "|\n" ; |
| 187 |
print $prefix . "+- $k" ; |
| 188 |
$offset = ' ' x ($max + 4) ; |
| 189 |
} |
| 190 |
else { |
| 191 |
print $prefix . "$k" ; |
| 192 |
$offset = ' ' x ($max + 1) ; |
| 193 |
} |
| 194 |
|
| 195 |
my ($ver, $rest) = @{ $v } ; |
| 196 |
if (ref $rest) |
| 197 |
{ |
| 198 |
my $bar = @keys ? "|" : " "; |
| 199 |
print " -" . "-" x ($max - length $k ) . "+\n" ; |
| 200 |
printTree ($rest, $prefix . $bar . $offset ) |
| 201 |
} |
| 202 |
else |
| 203 |
{ print "\n" } |
| 204 |
} |
| 205 |
|
| 206 |
} |
| 207 |
|
| 208 |
########################################################################### |
| 209 |
|
| 210 |
sub mkHexOct |
| 211 |
{ |
| 212 |
my ($f, $max, @a) = @_ ; |
| 213 |
my $mask = "\x00" x $max ; |
| 214 |
my $string = "" ; |
| 215 |
|
| 216 |
foreach (@a) { |
| 217 |
vec($mask, $_, 1) = 1 ; |
| 218 |
} |
| 219 |
|
| 220 |
foreach (unpack("C*", $mask)) { |
| 221 |
if ($f eq 'x') { |
| 222 |
$string .= '\x' . sprintf("%2.2x", $_) |
| 223 |
} |
| 224 |
else { |
| 225 |
$string .= '\\' . sprintf("%o", $_) |
| 226 |
} |
| 227 |
} |
| 228 |
return $string ; |
| 229 |
} |
| 230 |
|
| 231 |
sub mkHex |
| 232 |
{ |
| 233 |
my($max, @a) = @_; |
| 234 |
return mkHexOct("x", $max, @a); |
| 235 |
} |
| 236 |
|
| 237 |
sub mkOct |
| 238 |
{ |
| 239 |
my($max, @a) = @_; |
| 240 |
return mkHexOct("o", $max, @a); |
| 241 |
} |
| 242 |
|
| 243 |
########################################################################### |
| 244 |
|
| 245 |
if (@ARGV && $ARGV[0] eq "tree") |
| 246 |
{ |
| 247 |
printTree($tree, " ") ; |
| 248 |
exit ; |
| 249 |
} |
| 250 |
|
| 251 |
unlink "warnings.h"; |
| 252 |
unlink "lib/warnings.pm"; |
| 253 |
open(WARN, ">warnings.h") || die "Can't create warnings.h: $!\n"; |
| 254 |
binmode WARN; |
| 255 |
open(PM, ">lib/warnings.pm") || die "Can't create lib/warnings.pm: $!\n"; |
| 256 |
binmode PM; |
| 257 |
|
| 258 |
print WARN <<'EOM' ; |
| 259 |
/* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
| 260 |
This file is built by warnings.pl |
| 261 |
Any changes made here will be lost! |
| 262 |
*/ |
| 263 |
|
| 264 |
|
| 265 |
#define Off(x) ((x) / 8) |
| 266 |
#define Bit(x) (1 << ((x) % 8)) |
| 267 |
#define IsSet(a, x) ((a)[Off(x)] & Bit(x)) |
| 268 |
|
| 269 |
|
| 270 |
#define G_WARN_OFF 0 /* $^W == 0 */ |
| 271 |
#define G_WARN_ON 1 /* -w flag and $^W != 0 */ |
| 272 |
#define G_WARN_ALL_ON 2 /* -W flag */ |
| 273 |
#define G_WARN_ALL_OFF 4 /* -X flag */ |
| 274 |
#define G_WARN_ONCE 8 /* set if 'once' ever enabled */ |
| 275 |
#define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF) |
| 276 |
|
| 277 |
#define pWARN_STD Nullsv |
| 278 |
#define pWARN_ALL (Nullsv+1) /* use warnings 'all' */ |
| 279 |
#define pWARN_NONE (Nullsv+2) /* no warnings 'all' */ |
| 280 |
|
| 281 |
#define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \ |
| 282 |
(x) == pWARN_NONE) |
| 283 |
EOM |
| 284 |
|
| 285 |
my $offset = 0 ; |
| 286 |
|
| 287 |
$index = $offset ; |
| 288 |
#@{ $list{"all"} } = walk ($tree) ; |
| 289 |
valueWalk ($tree) ; |
| 290 |
my $index = orderValues(); |
| 291 |
|
| 292 |
die <<EOM if $index > 255 ; |
| 293 |
Too many warnings categories -- max is 255 |
| 294 |
rewrite packWARN* & unpackWARN* macros |
| 295 |
EOM |
| 296 |
|
| 297 |
walk ($tree) ; |
| 298 |
|
| 299 |
$index *= 2 ; |
| 300 |
my $warn_size = int($index / 8) + ($index % 8 != 0) ; |
| 301 |
|
| 302 |
my $k ; |
| 303 |
my $last_ver = 0; |
| 304 |
foreach $k (sort { $a <=> $b } keys %ValueToName) { |
| 305 |
my ($name, $version) = @{ $ValueToName{$k} }; |
| 306 |
print WARN "\n/* Warnings Categories added in Perl $version */\n\n" |
| 307 |
if $last_ver != $version ; |
| 308 |
print WARN tab(5, "#define WARN_$name"), "$k\n" ; |
| 309 |
$last_ver = $version ; |
| 310 |
} |
| 311 |
print WARN "\n" ; |
| 312 |
|
| 313 |
print WARN tab(5, '#define WARNsize'), "$warn_size\n" ; |
| 314 |
#print WARN tab(5, '#define WARN_ALLstring'), '"', ('\377' x $warn_size) , "\"\n" ; |
| 315 |
print WARN tab(5, '#define WARN_ALLstring'), '"', ('\125' x $warn_size) , "\"\n" ; |
| 316 |
print WARN tab(5, '#define WARN_NONEstring'), '"', ('\0' x $warn_size) , "\"\n" ; |
| 317 |
my $WARN_TAINTstring = mkOct($warn_size, map $_ * 2, @{ $list{'taint'} }); |
| 318 |
|
| 319 |
print WARN tab(5, '#define WARN_TAINTstring'), qq["$WARN_TAINTstring"\n] ; |
| 320 |
|
| 321 |
print WARN <<'EOM'; |
| 322 |
|
| 323 |
#define isLEXWARN_on (PL_curcop->cop_warnings != pWARN_STD) |
| 324 |
#define isLEXWARN_off (PL_curcop->cop_warnings == pWARN_STD) |
| 325 |
#define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE)) |
| 326 |
#define isWARN_on(c,x) (IsSet(SvPVX(c), 2*(x))) |
| 327 |
#define isWARNf_on(c,x) (IsSet(SvPVX(c), 2*(x)+1)) |
| 328 |
|
| 329 |
#define ckWARN(x) \ |
| 330 |
( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
| 331 |
(PL_curcop->cop_warnings == pWARN_ALL || \ |
| 332 |
isWARN_on(PL_curcop->cop_warnings, x) ) ) \ |
| 333 |
|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
| 334 |
|
| 335 |
#define ckWARN2(x,y) \ |
| 336 |
( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
| 337 |
(PL_curcop->cop_warnings == pWARN_ALL || \ |
| 338 |
isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 339 |
isWARN_on(PL_curcop->cop_warnings, y) ) ) \ |
| 340 |
|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
| 341 |
|
| 342 |
#define ckWARN3(x,y,z) \ |
| 343 |
( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
| 344 |
(PL_curcop->cop_warnings == pWARN_ALL || \ |
| 345 |
isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 346 |
isWARN_on(PL_curcop->cop_warnings, y) || \ |
| 347 |
isWARN_on(PL_curcop->cop_warnings, z) ) ) \ |
| 348 |
|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
| 349 |
|
| 350 |
#define ckWARN4(x,y,z,t) \ |
| 351 |
( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
| 352 |
(PL_curcop->cop_warnings == pWARN_ALL || \ |
| 353 |
isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 354 |
isWARN_on(PL_curcop->cop_warnings, y) || \ |
| 355 |
isWARN_on(PL_curcop->cop_warnings, z) || \ |
| 356 |
isWARN_on(PL_curcop->cop_warnings, t) ) ) \ |
| 357 |
|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
| 358 |
|
| 359 |
#define ckWARN_d(x) \ |
| 360 |
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 361 |
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 362 |
isWARN_on(PL_curcop->cop_warnings, x) ) ) |
| 363 |
|
| 364 |
#define ckWARN2_d(x,y) \ |
| 365 |
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 366 |
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 367 |
(isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 368 |
isWARN_on(PL_curcop->cop_warnings, y) ) ) ) |
| 369 |
|
| 370 |
#define ckWARN3_d(x,y,z) \ |
| 371 |
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 372 |
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 373 |
(isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 374 |
isWARN_on(PL_curcop->cop_warnings, y) || \ |
| 375 |
isWARN_on(PL_curcop->cop_warnings, z) ) ) ) |
| 376 |
|
| 377 |
#define ckWARN4_d(x,y,z,t) \ |
| 378 |
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 379 |
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 380 |
(isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 381 |
isWARN_on(PL_curcop->cop_warnings, y) || \ |
| 382 |
isWARN_on(PL_curcop->cop_warnings, z) || \ |
| 383 |
isWARN_on(PL_curcop->cop_warnings, t) ) ) ) |
| 384 |
|
| 385 |
#define packWARN(a) (a ) |
| 386 |
#define packWARN2(a,b) ((a) | (b)<<8 ) |
| 387 |
#define packWARN3(a,b,c) ((a) | (b)<<8 | (c) <<16 ) |
| 388 |
#define packWARN4(a,b,c,d) ((a) | (b)<<8 | (c) <<16 | (d) <<24) |
| 389 |
|
| 390 |
#define unpackWARN1(x) ((x) & 0xFF) |
| 391 |
#define unpackWARN2(x) (((x) >>8) & 0xFF) |
| 392 |
#define unpackWARN3(x) (((x) >>16) & 0xFF) |
| 393 |
#define unpackWARN4(x) (((x) >>24) & 0xFF) |
| 394 |
|
| 395 |
#define ckDEAD(x) \ |
| 396 |
( ! specialWARN(PL_curcop->cop_warnings) && \ |
| 397 |
( isWARNf_on(PL_curcop->cop_warnings, WARN_ALL) || \ |
| 398 |
isWARNf_on(PL_curcop->cop_warnings, unpackWARN1(x)) || \ |
| 399 |
isWARNf_on(PL_curcop->cop_warnings, unpackWARN2(x)) || \ |
| 400 |
isWARNf_on(PL_curcop->cop_warnings, unpackWARN3(x)) || \ |
| 401 |
isWARNf_on(PL_curcop->cop_warnings, unpackWARN4(x)))) |
| 402 |
|
| 403 |
/* end of file warnings.h */ |
| 404 |
|
| 405 |
EOM |
| 406 |
|
| 407 |
close WARN ; |
| 408 |
|
| 409 |
while (<DATA>) { |
| 410 |
last if /^KEYWORDS$/ ; |
| 411 |
print PM $_ ; |
| 412 |
} |
| 413 |
|
| 414 |
#$list{'all'} = [ $offset .. 8 * ($warn_size/2) - 1 ] ; |
| 415 |
|
| 416 |
$last_ver = 0; |
| 417 |
print PM "our %Offsets = (\n" ; |
| 418 |
foreach my $k (sort { $a <=> $b } keys %ValueToName) { |
| 419 |
my ($name, $version) = @{ $ValueToName{$k} }; |
| 420 |
$name = lc $name; |
| 421 |
$k *= 2 ; |
| 422 |
if ( $last_ver != $version ) { |
| 423 |
print PM "\n"; |
| 424 |
print PM tab(4, " # Warnings Categories added in Perl $version"); |
| 425 |
print PM "\n\n"; |
| 426 |
} |
| 427 |
print PM tab(4, " '$name'"), "=> $k,\n" ; |
| 428 |
$last_ver = $version; |
| 429 |
} |
| 430 |
|
| 431 |
print PM " );\n\n" ; |
| 432 |
|
| 433 |
print PM "our %Bits = (\n" ; |
| 434 |
foreach $k (sort keys %list) { |
| 435 |
|
| 436 |
my $v = $list{$k} ; |
| 437 |
my @list = sort { $a <=> $b } @$v ; |
| 438 |
|
| 439 |
print PM tab(4, " '$k'"), '=> "', |
| 440 |
# mkHex($warn_size, @list), |
| 441 |
mkHex($warn_size, map $_ * 2 , @list), |
| 442 |
'", # [', mkRange(@list), "]\n" ; |
| 443 |
} |
| 444 |
|
| 445 |
print PM " );\n\n" ; |
| 446 |
|
| 447 |
print PM "our %DeadBits = (\n" ; |
| 448 |
foreach $k (sort keys %list) { |
| 449 |
|
| 450 |
my $v = $list{$k} ; |
| 451 |
my @list = sort { $a <=> $b } @$v ; |
| 452 |
|
| 453 |
print PM tab(4, " '$k'"), '=> "', |
| 454 |
# mkHex($warn_size, @list), |
| 455 |
mkHex($warn_size, map $_ * 2 + 1 , @list), |
| 456 |
'", # [', mkRange(@list), "]\n" ; |
| 457 |
} |
| 458 |
|
| 459 |
print PM " );\n\n" ; |
| 460 |
print PM '$NONE = "', ('\0' x $warn_size) , "\";\n" ; |
| 461 |
print PM '$LAST_BIT = ' . "$index ;\n" ; |
| 462 |
print PM '$BYTES = ' . "$warn_size ;\n" ; |
| 463 |
while (<DATA>) { |
| 464 |
print PM $_ ; |
| 465 |
} |
| 466 |
|
| 467 |
close PM ; |
| 468 |
|
| 469 |
__END__ |
| 470 |
|
| 471 |
# !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
| 472 |
# This file was created by warnings.pl |
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# Any changes made here will be lost. |
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# |
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|
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package warnings; |
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|
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our $VERSION = '1.03'; |
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|
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=head1 NAME |
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|
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warnings - Perl pragma to control optional warnings |
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|
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=head1 SYNOPSIS |
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|
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use warnings; |
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no warnings; |
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|
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use warnings "all"; |
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no warnings "all"; |
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|
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use warnings::register; |
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if (warnings::enabled()) { |
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warnings::warn("some warning"); |
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} |
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|
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if (warnings::enabled("void")) { |
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warnings::warn("void", "some warning"); |
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} |
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|
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if (warnings::enabled($object)) { |
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warnings::warn($object, "some warning"); |
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} |
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|
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warnings::warnif("some warning"); |
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warnings::warnif("void", "some warning"); |
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warnings::warnif($object, "some warning"); |
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|
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=head1 DESCRIPTION |
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|
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The C<warnings> pragma is a replacement for the command line flag C<-w>, |
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but the pragma is limited to the enclosing block, while the flag is global. |
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See L<perllexwarn> for more information. |
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|
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If no import list is supplied, all possible warnings are either enabled |
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or disabled. |
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|
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A number of functions are provided to assist module authors. |
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|
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=over 4 |
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|
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=item use warnings::register |
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|
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Creates a new warnings category with the same name as the package where |
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the call to the pragma is used. |
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|
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=item warnings::enabled() |
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|
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Use the warnings category with the same name as the current package. |
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|
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Return TRUE if that warnings category is enabled in the calling module. |
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Otherwise returns FALSE. |
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|
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=item warnings::enabled($category) |
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|
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Return TRUE if the warnings category, C<$category>, is enabled in the |
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calling module. |
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Otherwise returns FALSE. |
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|
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=item warnings::enabled($object) |
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|
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Use the name of the class for the object reference, C<$object>, as the |
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warnings category. |
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|
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Return TRUE if that warnings category is enabled in the first scope |
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where the object is used. |
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Otherwise returns FALSE. |
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|
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=item warnings::warn($message) |
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|
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Print C<$message> to STDERR. |
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|
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Use the warnings category with the same name as the current package. |
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|
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If that warnings category has been set to "FATAL" in the calling module |
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then die. Otherwise return. |
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|
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=item warnings::warn($category, $message) |
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|
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Print C<$message> to STDERR. |
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|
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If the warnings category, C<$category>, has been set to "FATAL" in the |
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calling module then die. Otherwise return. |
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|
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=item warnings::warn($object, $message) |
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|
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Print C<$message> to STDERR. |
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|
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Use the name of the class for the object reference, C<$object>, as the |
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warnings category. |
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|
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If that warnings category has been set to "FATAL" in the scope where C<$object> |
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is first used then die. Otherwise return. |
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|
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|
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=item warnings::warnif($message) |
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|
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Equivalent to: |
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|
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if (warnings::enabled()) |
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{ warnings::warn($message) } |
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|
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=item warnings::warnif($category, $message) |
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|
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Equivalent to: |
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|
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if (warnings::enabled($category)) |
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{ warnings::warn($category, $message) } |
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|
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=item warnings::warnif($object, $message) |
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|
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Equivalent to: |
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|
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if (warnings::enabled($object)) |
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{ warnings::warn($object, $message) } |
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|
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=back |
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|
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See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>. |
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|
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=cut |
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|
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use Carp (); |
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|
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KEYWORDS |
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|
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$All = "" ; vec($All, $Offsets{'all'}, 2) = 3 ; |
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|
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sub Croaker |
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{ |
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delete $Carp::CarpInternal{'warnings'}; |
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Carp::croak(@_); |
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} |
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|
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sub bits |
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{ |
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# called from B::Deparse.pm |
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|
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push @_, 'all' unless @_; |
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|
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my $mask; |
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my $catmask ; |
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my $fatal = 0 ; |
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my $no_fatal = 0 ; |
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|
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foreach my $word ( @_ ) { |
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if ($word eq 'FATAL') { |
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$fatal = 1; |
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$no_fatal = 0; |
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} |
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elsif ($word eq 'NONFATAL') { |
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$fatal = 0; |
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$no_fatal = 1; |
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} |
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elsif ($catmask = $Bits{$word}) { |
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$mask |= $catmask ; |
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$mask |= $DeadBits{$word} if $fatal ; |
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$mask &= ~($DeadBits{$word}|$All) if $no_fatal ; |
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} |
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else |
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{ Croaker("Unknown warnings category '$word'")} |
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} |
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|
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return $mask ; |
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} |
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|
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sub import |
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{ |
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shift; |
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|
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my $catmask ; |
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my $fatal = 0 ; |
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my $no_fatal = 0 ; |
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|
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my $mask = ${^WARNING_BITS} ; |
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|
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if (vec($mask, $Offsets{'all'}, 1)) { |
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$mask |= $Bits{'all'} ; |
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$mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
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} |
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|
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push @_, 'all' unless @_; |
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|
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foreach my $word ( @_ ) { |
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if ($word eq 'FATAL') { |
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$fatal = 1; |
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$no_fatal = 0; |
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} |
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elsif ($word eq 'NONFATAL') { |
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$fatal = 0; |
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$no_fatal = 1; |
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} |
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elsif ($catmask = $Bits{$word}) { |
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$mask |= $catmask ; |
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$mask |= $DeadBits{$word} if $fatal ; |
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$mask &= ~($DeadBits{$word}|$All) if $no_fatal ; |
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} |
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else |
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{ Croaker("Unknown warnings category '$word'")} |
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} |
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|
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${^WARNING_BITS} = $mask ; |
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} |
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|
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sub unimport |
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{ |
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shift; |
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|
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my $catmask ; |
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my $mask = ${^WARNING_BITS} ; |
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|
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if (vec($mask, $Offsets{'all'}, 1)) { |
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$mask |= $Bits{'all'} ; |
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$mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
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} |
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|
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push @_, 'all' unless @_; |
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|
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foreach my $word ( @_ ) { |
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if ($word eq 'FATAL') { |
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next; |
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} |
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elsif ($catmask = $Bits{$word}) { |
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$mask &= ~($catmask | $DeadBits{$word} | $All); |
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} |
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else |
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{ Croaker("Unknown warnings category '$word'")} |
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} |
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|
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${^WARNING_BITS} = $mask ; |
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} |
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|
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my %builtin_type; @builtin_type{qw(SCALAR ARRAY HASH CODE REF GLOB LVALUE Regexp)} = (); |
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|
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sub __chk |
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{ |
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my $category ; |
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my $offset ; |
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my $isobj = 0 ; |
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|
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if (@_) { |
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# check the category supplied. |
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$category = shift ; |
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if (my $type = ref $category) { |
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Croaker("not an object") |
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if exists $builtin_type{$type}; |
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$category = $type; |
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$isobj = 1 ; |
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} |
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$offset = $Offsets{$category}; |
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Croaker("Unknown warnings category '$category'") |
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unless defined $offset; |
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} |
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else { |
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$category = (caller(1))[0] ; |
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$offset = $Offsets{$category}; |
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Croaker("package '$category' not registered for warnings") |
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unless defined $offset ; |
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} |
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|
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my $this_pkg = (caller(1))[0] ; |
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my $i = 2 ; |
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my $pkg ; |
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|
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if ($isobj) { |
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while (do { { package DB; $pkg = (caller($i++))[0] } } ) { |
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last unless @DB::args && $DB::args[0] =~ /^$category=/ ; |
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} |
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$i -= 2 ; |
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} |
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else { |
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for ($i = 2 ; $pkg = (caller($i))[0] ; ++ $i) { |
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last if $pkg ne $this_pkg ; |
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} |
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$i = 2 |
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if !$pkg || $pkg eq $this_pkg ; |
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} |
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|
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my $callers_bitmask = (caller($i))[9] ; |
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return ($callers_bitmask, $offset, $i) ; |
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} |
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|
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sub enabled |
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{ |
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Croaker("Usage: warnings::enabled([category])") |
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unless @_ == 1 || @_ == 0 ; |
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|
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my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
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|
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return 0 unless defined $callers_bitmask ; |
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return vec($callers_bitmask, $offset, 1) || |
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vec($callers_bitmask, $Offsets{'all'}, 1) ; |
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} |
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|
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|
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sub warn |
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{ |
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Croaker("Usage: warnings::warn([category,] 'message')") |
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unless @_ == 2 || @_ == 1 ; |
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|
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my $message = pop ; |
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my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
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Carp::croak($message) |
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if vec($callers_bitmask, $offset+1, 1) || |
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vec($callers_bitmask, $Offsets{'all'}+1, 1) ; |
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Carp::carp($message) ; |
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} |
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|
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sub warnif |
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{ |
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Croaker("Usage: warnings::warnif([category,] 'message')") |
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unless @_ == 2 || @_ == 1 ; |
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|
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my $message = pop ; |
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my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
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|
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return |
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unless defined $callers_bitmask && |
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(vec($callers_bitmask, $offset, 1) || |
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vec($callers_bitmask, $Offsets{'all'}, 1)) ; |
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|
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Carp::croak($message) |
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if vec($callers_bitmask, $offset+1, 1) || |
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vec($callers_bitmask, $Offsets{'all'}+1, 1) ; |
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|
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Carp::carp($message) ; |
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} |
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|
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1; |
