| File | /usr/local/lib/perl5/site_perl/5.10.1/namespace/clean.pm |
| Statements Executed | 2067 |
| Statement Execution Time | 2.97ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 4 | 1 | 1 | 1.35ms | 2.99ms | namespace::clean::__ANON__[:211] |
| 4 | 1 | 1 | 551µs | 1.55ms | namespace::clean::get_functions |
| 1 | 1 | 1 | 451µs | 726µs | namespace::clean::BEGIN@15 |
| 1 | 1 | 1 | 349µs | 2.03ms | namespace::clean::BEGIN@14 |
| 4 | 4 | 4 | 306µs | 1.96ms | namespace::clean::import |
| 4 | 1 | 1 | 27µs | 3.01ms | namespace::clean::__ANON__[:275] |
| 112 | 2 | 2 | 23µs | 23µs | namespace::clean::CORE:match (opcode) |
| 4 | 1 | 1 | 20µs | 20µs | namespace::clean::get_class_store |
| 1 | 1 | 1 | 16µs | 26µs | namespace::clean::BEGIN@9 |
| 1 | 1 | 1 | 11µs | 34µs | namespace::clean::BEGIN@16 |
| 1 | 1 | 1 | 10µs | 54µs | namespace::clean::BEGIN@13 |
| 1 | 1 | 1 | 10µs | 27µs | namespace::clean::BEGIN@190 |
| 1 | 1 | 1 | 9µs | 20µs | namespace::clean::BEGIN@383 |
| 1 | 1 | 1 | 9µs | 23µs | namespace::clean::BEGIN@340 |
| 1 | 1 | 1 | 9µs | 23µs | namespace::clean::BEGIN@170 |
| 1 | 1 | 1 | 8µs | 23µs | namespace::clean::BEGIN@320 |
| 1 | 1 | 1 | 7µs | 65µs | namespace::clean::BEGIN@12 |
| 1 | 1 | 1 | 7µs | 9µs | namespace::clean::BEGIN@10 |
| 0 | 0 | 0 | 0s | 0s | namespace::clean::__ANON__[:248] |
| 0 | 0 | 0 | 0s | 0s | namespace::clean::clean_subroutines |
| 0 | 0 | 0 | 0s | 0s | namespace::clean::unimport |
| Line | State ments |
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Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package namespace::clean; | ||||
| 2 | |||||
| 3 | =head1 NAME | ||||
| 4 | |||||
| 5 | namespace::clean - Keep imports and functions out of your namespace | ||||
| 6 | |||||
| 7 | =cut | ||||
| 8 | |||||
| 9 | 3 | 23µs | 2 | 36µs | # spent 26µs (16+10) within namespace::clean::BEGIN@9 which was called
# once (16µs+10µs) by MooseX::Types::Base::BEGIN@15 at line 9 # spent 26µs making 1 call to namespace::clean::BEGIN@9
# spent 10µs making 1 call to warnings::import |
| 10 | 3 | 22µs | 2 | 11µs | # spent 9µs (7+2) within namespace::clean::BEGIN@10 which was called
# once (7µs+2µs) by MooseX::Types::Base::BEGIN@15 at line 10 # spent 9µs making 1 call to namespace::clean::BEGIN@10
# spent 2µs making 1 call to strict::import |
| 11 | |||||
| 12 | 3 | 26µs | 2 | 124µs | # spent 65µs (7+58) within namespace::clean::BEGIN@12 which was called
# once (7µs+58µs) by MooseX::Types::Base::BEGIN@15 at line 12 # spent 65µs making 1 call to namespace::clean::BEGIN@12
# spent 58µs making 1 call to vars::import |
| 13 | 3 | 26µs | 2 | 99µs | # spent 54µs (10+44) within namespace::clean::BEGIN@13 which was called
# once (10µs+44µs) by MooseX::Types::Base::BEGIN@15 at line 13 # spent 54µs making 1 call to namespace::clean::BEGIN@13
# spent 44µs making 1 call to Exporter::import |
| 14 | 3 | 118µs | 2 | 2.21ms | # spent 2.03ms (349µs+1.68) within namespace::clean::BEGIN@14 which was called
# once (349µs+1.68ms) by MooseX::Types::Base::BEGIN@15 at line 14 # spent 2.03ms making 1 call to namespace::clean::BEGIN@14
# spent 176µs making 1 call to Sub::Exporter::__ANON__[Sub/Exporter.pm:756] |
| 15 | 3 | 111µs | 2 | 763µs | # spent 726µs (451+275) within namespace::clean::BEGIN@15 which was called
# once (451µs+275µs) by MooseX::Types::Base::BEGIN@15 at line 15 # spent 726µs making 1 call to namespace::clean::BEGIN@15
# spent 38µs making 1 call to Exporter::import |
| 16 | 3 | 106µs | 2 | 57µs | # spent 34µs (11+23) within namespace::clean::BEGIN@16 which was called
# once (11µs+23µs) by MooseX::Types::Base::BEGIN@15 at line 16 # spent 34µs making 1 call to namespace::clean::BEGIN@16
# spent 23µs making 1 call to Exporter::import |
| 17 | |||||
| 18 | =head1 VERSION | ||||
| 19 | |||||
| 20 | 0.13 | ||||
| 21 | |||||
| 22 | =cut | ||||
| 23 | |||||
| 24 | 1 | 600ns | $VERSION = '0.13'; | ||
| 25 | 1 | 200ns | $STORAGE_VAR = '__NAMESPACE_CLEAN_STORAGE'; | ||
| 26 | |||||
| 27 | =head1 SYNOPSIS | ||||
| 28 | |||||
| 29 | package Foo; | ||||
| 30 | use warnings; | ||||
| 31 | use strict; | ||||
| 32 | |||||
| 33 | use Carp qw(croak); # 'croak' will be removed | ||||
| 34 | |||||
| 35 | sub bar { 23 } # 'bar' will be removed | ||||
| 36 | |||||
| 37 | # remove all previously defined functions | ||||
| 38 | use namespace::clean; | ||||
| 39 | |||||
| 40 | sub baz { bar() } # 'baz' still defined, 'bar' still bound | ||||
| 41 | |||||
| 42 | # begin to collection function names from here again | ||||
| 43 | no namespace::clean; | ||||
| 44 | |||||
| 45 | sub quux { baz() } # 'quux' will be removed | ||||
| 46 | |||||
| 47 | # remove all functions defined after the 'no' unimport | ||||
| 48 | use namespace::clean; | ||||
| 49 | |||||
| 50 | # Will print: 'No', 'No', 'Yes' and 'No' | ||||
| 51 | print +(__PACKAGE__->can('croak') ? 'Yes' : 'No'), "\n"; | ||||
| 52 | print +(__PACKAGE__->can('bar') ? 'Yes' : 'No'), "\n"; | ||||
| 53 | print +(__PACKAGE__->can('baz') ? 'Yes' : 'No'), "\n"; | ||||
| 54 | print +(__PACKAGE__->can('quux') ? 'Yes' : 'No'), "\n"; | ||||
| 55 | |||||
| 56 | 1; | ||||
| 57 | |||||
| 58 | =head1 DESCRIPTION | ||||
| 59 | |||||
| 60 | =head2 Keeping packages clean | ||||
| 61 | |||||
| 62 | When you define a function, or import one, into a Perl package, it will | ||||
| 63 | naturally also be available as a method. This does not per se cause | ||||
| 64 | problems, but it can complicate subclassing and, for example, plugin | ||||
| 65 | classes that are included via multiple inheritance by loading them as | ||||
| 66 | base classes. | ||||
| 67 | |||||
| 68 | The C<namespace::clean> pragma will remove all previously declared or | ||||
| 69 | imported symbols at the end of the current package's compile cycle. | ||||
| 70 | Functions called in the package itself will still be bound by their | ||||
| 71 | name, but they won't show up as methods on your class or instances. | ||||
| 72 | |||||
| 73 | By unimporting via C<no> you can tell C<namespace::clean> to start | ||||
| 74 | collecting functions for the next C<use namespace::clean;> specification. | ||||
| 75 | |||||
| 76 | You can use the C<-except> flag to tell C<namespace::clean> that you | ||||
| 77 | don't want it to remove a certain function or method. A common use would | ||||
| 78 | be a module exporting an C<import> method along with some functions: | ||||
| 79 | |||||
| 80 | use ModuleExportingImport; | ||||
| 81 | use namespace::clean -except => [qw( import )]; | ||||
| 82 | |||||
| 83 | If you just want to C<-except> a single sub, you can pass it directly. | ||||
| 84 | For more than one value you have to use an array reference. | ||||
| 85 | |||||
| 86 | =head2 Explicitely removing functions when your scope is compiled | ||||
| 87 | |||||
| 88 | It is also possible to explicitely tell C<namespace::clean> what packages | ||||
| 89 | to remove when the surrounding scope has finished compiling. Here is an | ||||
| 90 | example: | ||||
| 91 | |||||
| 92 | package Foo; | ||||
| 93 | use strict; | ||||
| 94 | |||||
| 95 | # blessed NOT available | ||||
| 96 | |||||
| 97 | sub my_class { | ||||
| 98 | use Scalar::Util qw( blessed ); | ||||
| 99 | use namespace::clean qw( blessed ); | ||||
| 100 | |||||
| 101 | # blessed available | ||||
| 102 | return blessed shift; | ||||
| 103 | } | ||||
| 104 | |||||
| 105 | # blessed NOT available | ||||
| 106 | |||||
| 107 | =head2 Moose | ||||
| 108 | |||||
| 109 | When using C<namespace::clean> together with L<Moose> you want to keep | ||||
| 110 | the installed C<meta> method. So your classes should look like: | ||||
| 111 | |||||
| 112 | package Foo; | ||||
| 113 | use Moose; | ||||
| 114 | use namespace::clean -except => 'meta'; | ||||
| 115 | ... | ||||
| 116 | |||||
| 117 | Same goes for L<Moose::Role>. | ||||
| 118 | |||||
| 119 | =head2 Cleaning other packages | ||||
| 120 | |||||
| 121 | You can tell C<namespace::clean> that you want to clean up another package | ||||
| 122 | instead of the one importing. To do this you have to pass in the C<-cleanee> | ||||
| 123 | option like this: | ||||
| 124 | |||||
| 125 | package My::MooseX::namespace::clean; | ||||
| 126 | use strict; | ||||
| 127 | |||||
| 128 | use namespace::clean (); # no cleanup, just load | ||||
| 129 | |||||
| 130 | sub import { | ||||
| 131 | namespace::clean->import( | ||||
| 132 | -cleanee => scalar(caller), | ||||
| 133 | -except => 'meta', | ||||
| 134 | ); | ||||
| 135 | } | ||||
| 136 | |||||
| 137 | If you don't care about C<namespace::clean>s discover-and-C<-except> logic, and | ||||
| 138 | just want to remove subroutines, try L</clean_subroutines>. | ||||
| 139 | |||||
| 140 | =head1 METHODS | ||||
| 141 | |||||
| 142 | You shouldn't need to call any of these. Just C<use> the package at the | ||||
| 143 | appropriate place. | ||||
| 144 | |||||
| 145 | =cut | ||||
| 146 | |||||
| 147 | =head2 clean_subroutines | ||||
| 148 | |||||
| 149 | This exposes the actual subroutine-removal logic. | ||||
| 150 | |||||
| 151 | namespace::clean->clean_subroutines($cleanee, qw( subA subB )); | ||||
| 152 | |||||
| 153 | will remove C<subA> and C<subB> from C<$cleanee>. Note that this will remove the | ||||
| 154 | subroutines B<immediately> and not wait for scope end. If you want to have this | ||||
| 155 | effect at a specific time (e.g. C<namespace::clean> acts on scope compile end) | ||||
| 156 | it is your responsibility to make sure it runs at that time. | ||||
| 157 | |||||
| 158 | =cut | ||||
| 159 | |||||
| 160 | # spent 2.99ms (1.35+1.64) within namespace::clean::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/namespace/clean.pm:211] which was called 4 times, avg 746µs/call:
# 4 times (1.35ms+1.64ms) by namespace::clean::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/namespace/clean.pm:275] at line 274, avg 746µs/call | ||||
| 161 | |||||
| 162 | 1452 | 1.04ms | my $cleanee = shift; | ||
| 163 | my $store = shift; | ||||
| 164 | SYMBOL: | ||||
| 165 | for my $f (@_) { | ||||
| 166 | my $fq = "${cleanee}::$f"; | ||||
| 167 | |||||
| 168 | # ignore already removed symbols | ||||
| 169 | next SYMBOL if $store->{exclude}{ $f }; | ||||
| 170 | 3 | 87µs | 2 | 38µs | # spent 23µs (9+15) within namespace::clean::BEGIN@170 which was called
# once (9µs+15µs) by MooseX::Types::Base::BEGIN@15 at line 170 # spent 23µs making 1 call to namespace::clean::BEGIN@170
# spent 15µs making 1 call to strict::unimport |
| 171 | |||||
| 172 | next SYMBOL unless exists ${ "${cleanee}::" }{ $f }; | ||||
| 173 | |||||
| 174 | if (ref(\${ "${cleanee}::" }{ $f }) eq 'GLOB') { | ||||
| 175 | # convince the Perl debugger to work | ||||
| 176 | # it assumes that sub_fullname($sub) can always be used to find the CV again | ||||
| 177 | # since we are deleting the glob where the subroutine was originally | ||||
| 178 | # defined, that assumption no longer holds, so we need to move it | ||||
| 179 | # elsewhere and point the CV's name to the new glob. | ||||
| 180 | my $sub = \&$fq; | ||||
| 181 | if ( sub_fullname($sub) eq $fq ) { # spent 1.64ms making 90 calls to Sub::Identify::sub_fullname, avg 18µs/call | ||||
| 182 | my $new_fq = "namespace::clean::deleted::$fq"; | ||||
| 183 | subname($new_fq, $sub); | ||||
| 184 | *{$new_fq} = $sub; | ||||
| 185 | } | ||||
| 186 | |||||
| 187 | local *__tmp; | ||||
| 188 | |||||
| 189 | # keep original value to restore non-code slots | ||||
| 190 | 3 | 421µs | 2 | 45µs | # spent 27µs (10+18) within namespace::clean::BEGIN@190 which was called
# once (10µs+18µs) by MooseX::Types::Base::BEGIN@15 at line 190 # spent 27µs making 1 call to namespace::clean::BEGIN@190
# spent 18µs making 1 call to warnings::unimport |
| 191 | *__tmp = *{ ${ "${cleanee}::" }{ $f } }; | ||||
| 192 | delete ${ "${cleanee}::" }{ $f }; | ||||
| 193 | } | ||||
| 194 | |||||
| 195 | SLOT: | ||||
| 196 | # restore non-code slots to symbol. | ||||
| 197 | # omit the FORMAT slot, since perl erroneously puts it into the | ||||
| 198 | # SCALAR slot of the new glob. | ||||
| 199 | for my $t (qw( SCALAR ARRAY HASH IO )) { | ||||
| 200 | next SLOT unless defined *__tmp{ $t }; | ||||
| 201 | *{ "${cleanee}::$f" } = *__tmp{ $t }; | ||||
| 202 | } | ||||
| 203 | } | ||||
| 204 | else { | ||||
| 205 | # A non-glob in the stash is assumed to stand for some kind | ||||
| 206 | # of function. So far they all do, but the core might change | ||||
| 207 | # this some day. Watch perl5-porters. | ||||
| 208 | delete ${ "${cleanee}::" }{ $f }; | ||||
| 209 | } | ||||
| 210 | } | ||||
| 211 | 1 | 3µs | }; | ||
| 212 | |||||
| 213 | sub clean_subroutines { | ||||
| 214 | my ($nc, $cleanee, @subs) = @_; | ||||
| 215 | $RemoveSubs->($cleanee, {}, @subs); | ||||
| 216 | } | ||||
| 217 | |||||
| 218 | =head2 import | ||||
| 219 | |||||
| 220 | Makes a snapshot of the current defined functions and installs a | ||||
| 221 | L<B::Hooks::EndOfScope> hook in the current scope to invoke the cleanups. | ||||
| 222 | |||||
| 223 | =cut | ||||
| 224 | |||||
| 225 | # spent 1.96ms (306µs+1.65) within namespace::clean::import which was called 4 times, avg 489µs/call:
# once (91µs+628µs) by MooseX::Types::BEGIN@20 at line 20 of MooseX/Types.pm
# once (103µs+604µs) by MooseX::Types::Base::BEGIN@15 at line 15 of MooseX/Types/Base.pm
# once (66µs+294µs) by MooseX::Types::Moose::BEGIN@15 at line 15 of MooseX/Types/Moose.pm
# once (46µs+125µs) by MooseX::Types::CheckedUtilExports::BEGIN@17 at line 17 of MooseX/Types/CheckedUtilExports.pm | ||||
| 226 | 340 | 262µs | my ($pragma, @args) = @_; | ||
| 227 | |||||
| 228 | my (%args, $is_explicit); | ||||
| 229 | |||||
| 230 | ARG: | ||||
| 231 | while (@args) { | ||||
| 232 | |||||
| 233 | if ($args[0] =~ /^\-/) { # spent 8µs making 4 calls to namespace::clean::CORE:match, avg 2µs/call | ||||
| 234 | my $key = shift @args; | ||||
| 235 | my $value = shift @args; | ||||
| 236 | $args{ $key } = $value; | ||||
| 237 | } | ||||
| 238 | else { | ||||
| 239 | $is_explicit++; | ||||
| 240 | last ARG; | ||||
| 241 | } | ||||
| 242 | } | ||||
| 243 | |||||
| 244 | my $cleanee = exists $args{ -cleanee } ? $args{ -cleanee } : scalar caller; | ||||
| 245 | if ($is_explicit) { | ||||
| 246 | on_scope_end { | ||||
| 247 | $RemoveSubs->($cleanee, {}, @args); | ||||
| 248 | }; | ||||
| 249 | } | ||||
| 250 | else { | ||||
| 251 | |||||
| 252 | # calling class, all current functions and our storage | ||||
| 253 | my $functions = $pragma->get_functions($cleanee); # spent 1.55ms making 4 calls to namespace::clean::get_functions, avg 388µs/call | ||||
| 254 | my $store = $pragma->get_class_store($cleanee); # spent 20µs making 4 calls to namespace::clean::get_class_store, avg 5µs/call | ||||
| 255 | |||||
| 256 | # except parameter can be array ref or single value | ||||
| 257 | my %except = map {( $_ => 1 )} ( | ||||
| 258 | $args{ -except } | ||||
| 259 | ? ( ref $args{ -except } eq 'ARRAY' ? @{ $args{ -except } } : $args{ -except } ) | ||||
| 260 | : () | ||||
| 261 | ); | ||||
| 262 | |||||
| 263 | # register symbols for removal, if they have a CODE entry | ||||
| 264 | for my $f (keys %$functions) { | ||||
| 265 | next if $except{ $f }; | ||||
| 266 | next unless $functions->{ $f } | ||||
| 267 | and *{ $functions->{ $f } }{CODE}; | ||||
| 268 | $store->{remove}{ $f } = 1; | ||||
| 269 | } | ||||
| 270 | |||||
| 271 | # register EOF handler on first call to import | ||||
| 272 | unless ($store->{handler_is_installed}) { | ||||
| 273 | # spent 3.01ms (27µs+2.99) within namespace::clean::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/namespace/clean.pm:275] which was called 4 times, avg 753µs/call:
# 4 times (27µs+2.99ms) by B::Hooks::EndOfScope::__ANON__[/usr/local/lib/perl5/site_perl/5.10.1/B/Hooks/EndOfScope.pm:47] at line 47 of B/Hooks/EndOfScope.pm, avg 753µs/call | ||||
| 274 | 4 | 26µs | 4 | 2.99ms | $RemoveSubs->($cleanee, $store, keys %{ $store->{remove} }); # spent 2.99ms making 4 calls to namespace::clean::__ANON__[namespace/clean.pm:211], avg 746µs/call |
| 275 | }; # spent 73µs making 4 calls to B::Hooks::EndOfScope::on_scope_end, avg 18µs/call | ||||
| 276 | $store->{handler_is_installed} = 1; | ||||
| 277 | } | ||||
| 278 | |||||
| 279 | return 1; | ||||
| 280 | } | ||||
| 281 | } | ||||
| 282 | |||||
| 283 | =head2 unimport | ||||
| 284 | |||||
| 285 | This method will be called when you do a | ||||
| 286 | |||||
| 287 | no namespace::clean; | ||||
| 288 | |||||
| 289 | It will start a new section of code that defines functions to clean up. | ||||
| 290 | |||||
| 291 | =cut | ||||
| 292 | |||||
| 293 | sub unimport { | ||||
| 294 | my ($pragma, %args) = @_; | ||||
| 295 | |||||
| 296 | # the calling class, the current functions and our storage | ||||
| 297 | my $cleanee = exists $args{ -cleanee } ? $args{ -cleanee } : scalar caller; | ||||
| 298 | my $functions = $pragma->get_functions($cleanee); | ||||
| 299 | my $store = $pragma->get_class_store($cleanee); | ||||
| 300 | |||||
| 301 | # register all unknown previous functions as excluded | ||||
| 302 | for my $f (keys %$functions) { | ||||
| 303 | next if $store->{remove}{ $f } | ||||
| 304 | or $store->{exclude}{ $f }; | ||||
| 305 | $store->{exclude}{ $f } = 1; | ||||
| 306 | } | ||||
| 307 | |||||
| 308 | return 1; | ||||
| 309 | } | ||||
| 310 | |||||
| 311 | =head2 get_class_store | ||||
| 312 | |||||
| 313 | This returns a reference to a hash in a passed package containing | ||||
| 314 | information about function names included and excluded from removal. | ||||
| 315 | |||||
| 316 | =cut | ||||
| 317 | |||||
| 318 | # spent 20µs within namespace::clean::get_class_store which was called 4 times, avg 5µs/call:
# 4 times (20µs+0s) by namespace::clean::import at line 254, avg 5µs/call | ||||
| 319 | 8 | 23µs | my ($pragma, $class) = @_; | ||
| 320 | 3 | 120µs | 2 | 38µs | # spent 23µs (8+15) within namespace::clean::BEGIN@320 which was called
# once (8µs+15µs) by MooseX::Types::Base::BEGIN@15 at line 320 # spent 23µs making 1 call to namespace::clean::BEGIN@320
# spent 15µs making 1 call to strict::unimport |
| 321 | return \%{ "${class}::${STORAGE_VAR}" }; | ||||
| 322 | } | ||||
| 323 | |||||
| 324 | =head2 get_functions | ||||
| 325 | |||||
| 326 | Takes a class as argument and returns all currently defined functions | ||||
| 327 | in it as a hash reference with the function name as key and a typeglob | ||||
| 328 | reference to the symbol as value. | ||||
| 329 | |||||
| 330 | =cut | ||||
| 331 | |||||
| 332 | # spent 1.55ms (551µs+1.00) within namespace::clean::get_functions which was called 4 times, avg 388µs/call:
# 4 times (551µs+1.00ms) by namespace::clean::import at line 253, avg 388µs/call | ||||
| 333 | 223 | 458µs | my ($pragma, $class) = @_; | ||
| 334 | |||||
| 335 | return { | ||||
| 336 | map { @$_ } # key => value | ||||
| 337 | grep { *{ $_->[1] }{CODE} } # only functions # spent 985µs making 103 calls to Symbol::qualify_to_ref, avg 10µs/call | ||||
| 338 | map { [$_, qualify_to_ref( $_, $class )] } # get globref # spent 15µs making 108 calls to namespace::clean::CORE:match, avg 139ns/call | ||||
| 339 | grep { $_ !~ /::$/ } # no packages | ||||
| 340 | 3 | 67µs | 2 | 37µs | # spent 23µs (9+14) within namespace::clean::BEGIN@340 which was called
# once (9µs+14µs) by MooseX::Types::Base::BEGIN@15 at line 340 # spent 23µs making 1 call to namespace::clean::BEGIN@340
# spent 14µs making 1 call to strict::unimport |
| 341 | }; | ||||
| 342 | } | ||||
| 343 | |||||
| 344 | =head1 BUGS | ||||
| 345 | |||||
| 346 | C<namespace::clean> will clobber any formats that have the same name as | ||||
| 347 | a deleted sub. This is due to a bug in perl that makes it impossible to | ||||
| 348 | re-assign the FORMAT ref into a new glob. | ||||
| 349 | |||||
| 350 | =head1 IMPLEMENTATION DETAILS | ||||
| 351 | |||||
| 352 | This module works through the effect that a | ||||
| 353 | |||||
| 354 | delete $SomePackage::{foo}; | ||||
| 355 | |||||
| 356 | will remove the C<foo> symbol from C<$SomePackage> for run time lookups | ||||
| 357 | (e.g., method calls) but will leave the entry alive to be called by | ||||
| 358 | already resolved names in the package itself. C<namespace::clean> will | ||||
| 359 | restore and therefor in effect keep all glob slots that aren't C<CODE>. | ||||
| 360 | |||||
| 361 | A test file has been added to the perl core to ensure that this behaviour | ||||
| 362 | will be stable in future releases. | ||||
| 363 | |||||
| 364 | Just for completeness sake, if you want to remove the symbol completely, | ||||
| 365 | use C<undef> instead. | ||||
| 366 | |||||
| 367 | =head1 SEE ALSO | ||||
| 368 | |||||
| 369 | L<B::Hooks::EndOfScope> | ||||
| 370 | |||||
| 371 | =head1 AUTHOR AND COPYRIGHT | ||||
| 372 | |||||
| 373 | Robert 'phaylon' Sedlacek C<E<lt>rs@474.atE<gt>>, with many thanks to | ||||
| 374 | Matt S Trout for the inspiration on the whole idea. | ||||
| 375 | |||||
| 376 | =head1 LICENSE | ||||
| 377 | |||||
| 378 | This program is free software; you can redistribute it and/or modify | ||||
| 379 | it under the same terms as perl itself. | ||||
| 380 | |||||
| 381 | =cut | ||||
| 382 | |||||
| 383 | 3 | 32µs | 2 | 30µs | # spent 20µs (9+10) within namespace::clean::BEGIN@383 which was called
# once (9µs+10µs) by MooseX::Types::Base::BEGIN@15 at line 383 # spent 20µs making 1 call to namespace::clean::BEGIN@383
# spent 10µs making 1 call to warnings::unimport |
| 384 | 1 | 5µs | 'Danger! Laws of Thermodynamics may not apply.' | ||
# spent 23µs within namespace::clean::CORE:match which was called 112 times, avg 202ns/call:
# 108 times (15µs+0s) by namespace::clean::get_functions at line 338 of namespace/clean.pm, avg 139ns/call
# 4 times (8µs+0s) by namespace::clean::import at line 233 of namespace/clean.pm, avg 2µs/call |