Commit | Line | Data |
94b19069 |
1 | |
2 | package Class::MOP; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
5a2932cf |
7 | use 5.008; |
8 | |
3cf322a0 |
9 | use MRO::Compat; |
10 | |
4c105333 |
11 | use Carp 'confess'; |
4bfa5ddb |
12 | use Devel::GlobalDestruction qw( in_global_destruction ); |
b1a46f91 |
13 | use Scalar::Util 'weaken', 'reftype', 'blessed'; |
4bfa5ddb |
14 | use Sub::Name qw( subname ); |
fc4f8f91 |
15 | |
0531f510 |
16 | use Class::MOP::Class; |
17 | use Class::MOP::Attribute; |
18 | use Class::MOP::Method; |
19 | |
20 | use Class::MOP::Immutable; |
21 | |
b1f5f41d |
22 | BEGIN { |
11b56828 |
23 | *IS_RUNNING_ON_5_10 = ($] < 5.009_005) |
24 | ? sub () { 0 } |
4c105333 |
25 | : sub () { 1 }; |
46b23b44 |
26 | |
9efe16ca |
27 | *HAVE_ISAREV = defined(&mro::get_isarev) |
28 | ? sub () { 1 } |
29 | : sub () { 1 }; |
3ecd1b25 |
30 | |
31 | # this is either part of core or set up appropriately by MRO::Compat |
32 | *check_package_cache_flag = \&mro::get_pkg_gen; |
b1f5f41d |
33 | } |
e0e4674a |
34 | |
d7fe2508 |
35 | our $VERSION = '0.79'; |
8a7085c1 |
36 | our $XS_VERSION = $VERSION; |
d519662a |
37 | $VERSION = eval $VERSION; |
fc4f8f91 |
38 | our $AUTHORITY = 'cpan:STEVAN'; |
9d655b6d |
39 | |
4bfa5ddb |
40 | require XSLoader; |
41 | XSLoader::load( __PACKAGE__, $XS_VERSION ); |
d7bda114 |
42 | |
43 | |
be7677c7 |
44 | { |
45 | # Metaclasses are singletons, so we cache them here. |
46 | # there is no need to worry about destruction though |
47 | # because they should die only when the program dies. |
48 | # After all, do package definitions even get reaped? |
1d68af04 |
49 | my %METAS; |
50 | |
51 | # means of accessing all the metaclasses that have |
be7677c7 |
52 | # been initialized thus far (for mugwumps obj browser) |
1d68af04 |
53 | sub get_all_metaclasses { %METAS } |
54 | sub get_all_metaclass_instances { values %METAS } |
55 | sub get_all_metaclass_names { keys %METAS } |
be7677c7 |
56 | sub get_metaclass_by_name { $METAS{$_[0]} } |
1d68af04 |
57 | sub store_metaclass_by_name { $METAS{$_[0]} = $_[1] } |
58 | sub weaken_metaclass { weaken($METAS{$_[0]}) } |
be7677c7 |
59 | sub does_metaclass_exist { exists $METAS{$_[0]} && defined $METAS{$_[0]} } |
1d68af04 |
60 | sub remove_metaclass_by_name { $METAS{$_[0]} = undef } |
61 | |
be7677c7 |
62 | # NOTE: |
1d68af04 |
63 | # We only cache metaclasses, meaning instances of |
64 | # Class::MOP::Class. We do not cache instance of |
be7677c7 |
65 | # Class::MOP::Package or Class::MOP::Module. Mostly |
1d68af04 |
66 | # because I don't yet see a good reason to do so. |
be7677c7 |
67 | } |
68 | |
063ad0c5 |
69 | sub load_first_existing_class { |
f280f05c |
70 | my @classes = @_ |
71 | or return; |
5a24cf8a |
72 | |
73 | foreach my $class (@classes) { |
74 | unless ( _is_valid_class_name($class) ) { |
75 | my $display = defined($class) ? $class : 'undef'; |
76 | confess "Invalid class name ($display)"; |
77 | } |
ab5e2f48 |
78 | } |
79 | |
063ad0c5 |
80 | my $found; |
5a24cf8a |
81 | my %exceptions; |
063ad0c5 |
82 | for my $class (@classes) { |
83 | my $e = _try_load_one_class($class); |
84 | |
5a24cf8a |
85 | if ($e) { |
063ad0c5 |
86 | $exceptions{$class} = $e; |
5a24cf8a |
87 | } |
88 | else { |
063ad0c5 |
89 | $found = $class; |
90 | last; |
5a24cf8a |
91 | } |
063ad0c5 |
92 | } |
5a24cf8a |
93 | |
1d8153bd |
94 | return $found if $found; |
07940968 |
95 | |
063ad0c5 |
96 | confess join( |
97 | "\n", |
98 | map { |
99 | sprintf( |
fea44045 |
100 | "Could not load class (%s) because : %s", $_, |
063ad0c5 |
101 | $exceptions{$_} |
102 | ) |
103 | } @classes |
f280f05c |
104 | ); |
5a24cf8a |
105 | } |
106 | |
063ad0c5 |
107 | sub _try_load_one_class { |
108 | my $class = shift; |
109 | |
110 | return if is_class_loaded($class); |
111 | |
112 | my $file = $class . '.pm'; |
113 | $file =~ s{::}{/}g; |
114 | |
115 | return do { |
116 | local $@; |
117 | eval { require($file) }; |
118 | $@; |
119 | }; |
120 | } |
121 | |
5a24cf8a |
122 | sub load_class { |
1d8153bd |
123 | my $class = load_first_existing_class($_[0]); |
124 | return get_metaclass_by_name($class) || $class; |
448b6e55 |
125 | } |
126 | |
2c0fb064 |
127 | sub _is_valid_class_name { |
128 | my $class = shift; |
129 | |
130 | return 0 if ref($class); |
131 | return 0 unless defined($class); |
132 | return 0 unless length($class); |
133 | |
134 | return 1 if $class =~ /^\w+(?:::\w+)*$/; |
135 | |
136 | return 0; |
137 | } |
138 | |
53e90873 |
139 | sub class_of { |
610df02b |
140 | my $class = blessed($_[0]) || $_[0]; |
53e90873 |
141 | return get_metaclass_by_name($class); |
142 | } |
143 | |
aa448b16 |
144 | ## ---------------------------------------------------------------------------- |
145 | ## Setting up our environment ... |
146 | ## ---------------------------------------------------------------------------- |
1d68af04 |
147 | ## Class::MOP needs to have a few things in the global perl environment so |
aa448b16 |
148 | ## that it can operate effectively. Those things are done here. |
149 | ## ---------------------------------------------------------------------------- |
150 | |
3bf7644b |
151 | # ... nothing yet actually ;) |
8b978dd5 |
152 | |
b51af7f9 |
153 | ## ---------------------------------------------------------------------------- |
1d68af04 |
154 | ## Bootstrapping |
b51af7f9 |
155 | ## ---------------------------------------------------------------------------- |
1d68af04 |
156 | ## The code below here is to bootstrap our MOP with itself. This is also |
b51af7f9 |
157 | ## sometimes called "tying the knot". By doing this, we make it much easier |
158 | ## to extend the MOP through subclassing and such since now you can use the |
1d68af04 |
159 | ## MOP itself to extend itself. |
160 | ## |
b51af7f9 |
161 | ## Yes, I know, thats weird and insane, but it's a good thing, trust me :) |
1d68af04 |
162 | ## ---------------------------------------------------------------------------- |
727919c5 |
163 | |
1d68af04 |
164 | # We need to add in the meta-attributes here so that |
165 | # any subclass of Class::MOP::* will be able to |
727919c5 |
166 | # inherit them using &construct_instance |
167 | |
f0480c45 |
168 | ## -------------------------------------------------------- |
6d5355c3 |
169 | ## Class::MOP::Package |
727919c5 |
170 | |
6d5355c3 |
171 | Class::MOP::Package->meta->add_attribute( |
8683db0e |
172 | Class::MOP::Attribute->new('package' => ( |
b880e0de |
173 | reader => { |
1d68af04 |
174 | # NOTE: we need to do this in order |
175 | # for the instance meta-object to |
b880e0de |
176 | # not fall into meta-circular death |
1d68af04 |
177 | # |
ce2ae40f |
178 | # we just alias the original method |
1d68af04 |
179 | # rather than re-produce it here |
ce2ae40f |
180 | 'name' => \&Class::MOP::Package::name |
b880e0de |
181 | }, |
727919c5 |
182 | )) |
183 | ); |
184 | |
a5e51f0b |
185 | Class::MOP::Package->meta->add_attribute( |
8683db0e |
186 | Class::MOP::Attribute->new('namespace' => ( |
a5e51f0b |
187 | reader => { |
56dcfc1a |
188 | # NOTE: |
ce2ae40f |
189 | # we just alias the original method |
190 | # rather than re-produce it here |
191 | 'namespace' => \&Class::MOP::Package::namespace |
a5e51f0b |
192 | }, |
2e877f58 |
193 | init_arg => undef, |
c4260b45 |
194 | default => sub { \undef } |
a5e51f0b |
195 | )) |
196 | ); |
197 | |
f0480c45 |
198 | ## -------------------------------------------------------- |
199 | ## Class::MOP::Module |
200 | |
201 | # NOTE: |
1d68af04 |
202 | # yeah this is kind of stretching things a bit, |
f0480c45 |
203 | # but truthfully the version should be an attribute |
1d68af04 |
204 | # of the Module, the weirdness comes from having to |
205 | # stick to Perl 5 convention and store it in the |
206 | # $VERSION package variable. Basically if you just |
207 | # squint at it, it will look how you want it to look. |
f0480c45 |
208 | # Either as a package variable, or as a attribute of |
209 | # the metaclass, isn't abstraction great :) |
210 | |
211 | Class::MOP::Module->meta->add_attribute( |
8683db0e |
212 | Class::MOP::Attribute->new('version' => ( |
f0480c45 |
213 | reader => { |
ce2ae40f |
214 | # NOTE: |
215 | # we just alias the original method |
1d68af04 |
216 | # rather than re-produce it here |
ce2ae40f |
217 | 'version' => \&Class::MOP::Module::version |
f0480c45 |
218 | }, |
2e877f58 |
219 | init_arg => undef, |
c4260b45 |
220 | default => sub { \undef } |
f0480c45 |
221 | )) |
222 | ); |
223 | |
224 | # NOTE: |
1d68af04 |
225 | # By following the same conventions as version here, |
226 | # we are opening up the possibility that people can |
227 | # use the $AUTHORITY in non-Class::MOP modules as |
228 | # well. |
f0480c45 |
229 | |
230 | Class::MOP::Module->meta->add_attribute( |
8683db0e |
231 | Class::MOP::Attribute->new('authority' => ( |
f0480c45 |
232 | reader => { |
ce2ae40f |
233 | # NOTE: |
234 | # we just alias the original method |
1d68af04 |
235 | # rather than re-produce it here |
ce2ae40f |
236 | 'authority' => \&Class::MOP::Module::authority |
1d68af04 |
237 | }, |
2e877f58 |
238 | init_arg => undef, |
c4260b45 |
239 | default => sub { \undef } |
f0480c45 |
240 | )) |
241 | ); |
242 | |
243 | ## -------------------------------------------------------- |
6d5355c3 |
244 | ## Class::MOP::Class |
245 | |
727919c5 |
246 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
247 | Class::MOP::Attribute->new('attributes' => ( |
f7259199 |
248 | reader => { |
1d68af04 |
249 | # NOTE: we need to do this in order |
250 | # for the instance meta-object to |
251 | # not fall into meta-circular death |
252 | # |
ce2ae40f |
253 | # we just alias the original method |
1d68af04 |
254 | # rather than re-produce it here |
ce2ae40f |
255 | 'get_attribute_map' => \&Class::MOP::Class::get_attribute_map |
f7259199 |
256 | }, |
727919c5 |
257 | default => sub { {} } |
258 | )) |
259 | ); |
260 | |
351bd7d4 |
261 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
262 | Class::MOP::Attribute->new('methods' => ( |
1d68af04 |
263 | reader => { |
ce2ae40f |
264 | # NOTE: |
265 | # we just alias the original method |
1d68af04 |
266 | # rather than re-produce it here |
ce2ae40f |
267 | 'get_method_map' => \&Class::MOP::Class::get_method_map |
92330ee2 |
268 | }, |
7855ddba |
269 | default => sub { {} } |
c4260b45 |
270 | )) |
271 | ); |
272 | |
273 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
274 | Class::MOP::Attribute->new('superclasses' => ( |
c23184fc |
275 | accessor => { |
276 | # NOTE: |
277 | # we just alias the original method |
1d68af04 |
278 | # rather than re-produce it here |
c23184fc |
279 | 'superclasses' => \&Class::MOP::Class::superclasses |
280 | }, |
2e877f58 |
281 | init_arg => undef, |
c23184fc |
282 | default => sub { \undef } |
283 | )) |
284 | ); |
285 | |
286 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
287 | Class::MOP::Attribute->new('attribute_metaclass' => ( |
1d68af04 |
288 | reader => { |
6d2118a4 |
289 | # NOTE: |
290 | # we just alias the original method |
1d68af04 |
291 | # rather than re-produce it here |
6d2118a4 |
292 | 'attribute_metaclass' => \&Class::MOP::Class::attribute_metaclass |
1d68af04 |
293 | }, |
351bd7d4 |
294 | default => 'Class::MOP::Attribute', |
295 | )) |
296 | ); |
297 | |
298 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
299 | Class::MOP::Attribute->new('method_metaclass' => ( |
1d68af04 |
300 | reader => { |
6d2118a4 |
301 | # NOTE: |
302 | # we just alias the original method |
1d68af04 |
303 | # rather than re-produce it here |
6d2118a4 |
304 | 'method_metaclass' => \&Class::MOP::Class::method_metaclass |
305 | }, |
1d68af04 |
306 | default => 'Class::MOP::Method', |
351bd7d4 |
307 | )) |
308 | ); |
309 | |
2bab2be6 |
310 | Class::MOP::Class->meta->add_attribute( |
77373da8 |
311 | Class::MOP::Attribute->new('wrapped_method_metaclass' => ( |
312 | reader => { |
313 | # NOTE: |
314 | # we just alias the original method |
315 | # rather than re-produce it here |
316 | 'wrapped_method_metaclass' => \&Class::MOP::Class::wrapped_method_metaclass |
317 | }, |
318 | default => 'Class::MOP::Method::Wrapped', |
319 | )) |
320 | ); |
321 | |
322 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
323 | Class::MOP::Attribute->new('instance_metaclass' => ( |
b880e0de |
324 | reader => { |
1d68af04 |
325 | # NOTE: we need to do this in order |
326 | # for the instance meta-object to |
327 | # not fall into meta-circular death |
328 | # |
ce2ae40f |
329 | # we just alias the original method |
1d68af04 |
330 | # rather than re-produce it here |
ce2ae40f |
331 | 'instance_metaclass' => \&Class::MOP::Class::instance_metaclass |
b880e0de |
332 | }, |
1d68af04 |
333 | default => 'Class::MOP::Instance', |
2bab2be6 |
334 | )) |
335 | ); |
336 | |
44d6ea77 |
337 | Class::MOP::Class->meta->add_attribute( |
338 | Class::MOP::Attribute->new('immutable_transformer' => ( |
339 | reader => { |
340 | 'immutable_transformer' => \&Class::MOP::Class::immutable_transformer |
341 | }, |
342 | writer => { |
343 | '_set_immutable_transformer' => \&Class::MOP::Class::_set_immutable_transformer |
344 | }, |
345 | )) |
346 | ); |
347 | |
9d6dce77 |
348 | # NOTE: |
1d68af04 |
349 | # we don't actually need to tie the knot with |
350 | # Class::MOP::Class here, it is actually handled |
351 | # within Class::MOP::Class itself in the |
352 | # construct_class_instance method. |
9d6dce77 |
353 | |
f0480c45 |
354 | ## -------------------------------------------------------- |
727919c5 |
355 | ## Class::MOP::Attribute |
356 | |
7b31baf4 |
357 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
358 | Class::MOP::Attribute->new('name' => ( |
c23184fc |
359 | reader => { |
1d68af04 |
360 | # NOTE: we need to do this in order |
361 | # for the instance meta-object to |
362 | # not fall into meta-circular death |
363 | # |
ce2ae40f |
364 | # we just alias the original method |
1d68af04 |
365 | # rather than re-produce it here |
ce2ae40f |
366 | 'name' => \&Class::MOP::Attribute::name |
b880e0de |
367 | } |
7b31baf4 |
368 | )) |
369 | ); |
370 | |
371 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
372 | Class::MOP::Attribute->new('associated_class' => ( |
c23184fc |
373 | reader => { |
1d68af04 |
374 | # NOTE: we need to do this in order |
375 | # for the instance meta-object to |
376 | # not fall into meta-circular death |
377 | # |
ce2ae40f |
378 | # we just alias the original method |
1d68af04 |
379 | # rather than re-produce it here |
ce2ae40f |
380 | 'associated_class' => \&Class::MOP::Attribute::associated_class |
b880e0de |
381 | } |
7b31baf4 |
382 | )) |
383 | ); |
384 | |
385 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
386 | Class::MOP::Attribute->new('accessor' => ( |
6d2118a4 |
387 | reader => { 'accessor' => \&Class::MOP::Attribute::accessor }, |
388 | predicate => { 'has_accessor' => \&Class::MOP::Attribute::has_accessor }, |
7b31baf4 |
389 | )) |
390 | ); |
391 | |
392 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
393 | Class::MOP::Attribute->new('reader' => ( |
6d2118a4 |
394 | reader => { 'reader' => \&Class::MOP::Attribute::reader }, |
395 | predicate => { 'has_reader' => \&Class::MOP::Attribute::has_reader }, |
7b31baf4 |
396 | )) |
397 | ); |
398 | |
399 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
400 | Class::MOP::Attribute->new('initializer' => ( |
8ee74136 |
401 | reader => { 'initializer' => \&Class::MOP::Attribute::initializer }, |
402 | predicate => { 'has_initializer' => \&Class::MOP::Attribute::has_initializer }, |
0ab65f99 |
403 | )) |
404 | ); |
405 | |
406 | Class::MOP::Attribute->meta->add_attribute( |
d9d99689 |
407 | Class::MOP::Attribute->new('definition_context' => ( |
408 | reader => { 'definition_context' => \&Class::MOP::Attribute::definition_context }, |
409 | )) |
410 | ); |
411 | |
412 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
413 | Class::MOP::Attribute->new('writer' => ( |
6d2118a4 |
414 | reader => { 'writer' => \&Class::MOP::Attribute::writer }, |
415 | predicate => { 'has_writer' => \&Class::MOP::Attribute::has_writer }, |
7b31baf4 |
416 | )) |
417 | ); |
418 | |
419 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
420 | Class::MOP::Attribute->new('predicate' => ( |
6d2118a4 |
421 | reader => { 'predicate' => \&Class::MOP::Attribute::predicate }, |
422 | predicate => { 'has_predicate' => \&Class::MOP::Attribute::has_predicate }, |
7b31baf4 |
423 | )) |
424 | ); |
425 | |
426 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
427 | Class::MOP::Attribute->new('clearer' => ( |
6d2118a4 |
428 | reader => { 'clearer' => \&Class::MOP::Attribute::clearer }, |
429 | predicate => { 'has_clearer' => \&Class::MOP::Attribute::has_clearer }, |
7d28758b |
430 | )) |
431 | ); |
432 | |
433 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
434 | Class::MOP::Attribute->new('builder' => ( |
1d68af04 |
435 | reader => { 'builder' => \&Class::MOP::Attribute::builder }, |
436 | predicate => { 'has_builder' => \&Class::MOP::Attribute::has_builder }, |
437 | )) |
438 | ); |
439 | |
440 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
441 | Class::MOP::Attribute->new('init_arg' => ( |
6d2118a4 |
442 | reader => { 'init_arg' => \&Class::MOP::Attribute::init_arg }, |
443 | predicate => { 'has_init_arg' => \&Class::MOP::Attribute::has_init_arg }, |
7b31baf4 |
444 | )) |
445 | ); |
446 | |
447 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
448 | Class::MOP::Attribute->new('default' => ( |
7b31baf4 |
449 | # default has a custom 'reader' method ... |
1d68af04 |
450 | predicate => { 'has_default' => \&Class::MOP::Attribute::has_default }, |
7b31baf4 |
451 | )) |
452 | ); |
453 | |
3545c727 |
454 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
455 | Class::MOP::Attribute->new('associated_methods' => ( |
c23184fc |
456 | reader => { 'associated_methods' => \&Class::MOP::Attribute::associated_methods }, |
1d68af04 |
457 | default => sub { [] } |
3545c727 |
458 | )) |
459 | ); |
727919c5 |
460 | |
5659d76e |
461 | Class::MOP::Attribute->meta->add_method('clone' => sub { |
a740253a |
462 | my $self = shift; |
1d68af04 |
463 | $self->meta->clone_object($self, @_); |
727919c5 |
464 | }); |
465 | |
f0480c45 |
466 | ## -------------------------------------------------------- |
b6164407 |
467 | ## Class::MOP::Method |
b6164407 |
468 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
469 | Class::MOP::Attribute->new('body' => ( |
c23184fc |
470 | reader => { 'body' => \&Class::MOP::Method::body }, |
b6164407 |
471 | )) |
472 | ); |
473 | |
4c105333 |
474 | Class::MOP::Method->meta->add_attribute( |
5e607260 |
475 | Class::MOP::Attribute->new('associated_metaclass' => ( |
5e607260 |
476 | reader => { 'associated_metaclass' => \&Class::MOP::Method::associated_metaclass }, |
477 | )) |
478 | ); |
479 | |
480 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
481 | Class::MOP::Attribute->new('package_name' => ( |
4c105333 |
482 | reader => { 'package_name' => \&Class::MOP::Method::package_name }, |
483 | )) |
484 | ); |
485 | |
486 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
487 | Class::MOP::Attribute->new('name' => ( |
4c105333 |
488 | reader => { 'name' => \&Class::MOP::Method::name }, |
489 | )) |
490 | ); |
491 | |
2226a8b0 |
492 | Class::MOP::Method->meta->add_attribute( |
493 | Class::MOP::Attribute->new('original_method' => ( |
494 | reader => { 'original_method' => \&Class::MOP::Method::original_method }, |
495 | writer => { '_set_original_method' => \&Class::MOP::Method::_set_original_method }, |
496 | )) |
497 | ); |
498 | |
4c105333 |
499 | Class::MOP::Method->meta->add_method('clone' => sub { |
500 | my $self = shift; |
2226a8b0 |
501 | my $clone = $self->meta->clone_object($self, @_); |
502 | $clone->_set_original_method($self); |
503 | return $clone; |
4c105333 |
504 | }); |
505 | |
b6164407 |
506 | ## -------------------------------------------------------- |
507 | ## Class::MOP::Method::Wrapped |
508 | |
509 | # NOTE: |
1d68af04 |
510 | # the way this item is initialized, this |
511 | # really does not follow the standard |
512 | # practices of attributes, but we put |
b6164407 |
513 | # it here for completeness |
514 | Class::MOP::Method::Wrapped->meta->add_attribute( |
8683db0e |
515 | Class::MOP::Attribute->new('modifier_table') |
b6164407 |
516 | ); |
517 | |
518 | ## -------------------------------------------------------- |
565f0cbb |
519 | ## Class::MOP::Method::Generated |
520 | |
521 | Class::MOP::Method::Generated->meta->add_attribute( |
8683db0e |
522 | Class::MOP::Attribute->new('is_inline' => ( |
565f0cbb |
523 | reader => { 'is_inline' => \&Class::MOP::Method::Generated::is_inline }, |
4c105333 |
524 | default => 0, |
1d68af04 |
525 | )) |
565f0cbb |
526 | ); |
527 | |
d9d99689 |
528 | Class::MOP::Method::Generated->meta->add_attribute( |
529 | Class::MOP::Attribute->new('definition_context' => ( |
530 | reader => { 'definition_context' => \&Class::MOP::Method::Generated::definition_context }, |
531 | )) |
532 | ); |
533 | |
565f0cbb |
534 | ## -------------------------------------------------------- |
d90b42a6 |
535 | ## Class::MOP::Method::Accessor |
536 | |
537 | Class::MOP::Method::Accessor->meta->add_attribute( |
8683db0e |
538 | Class::MOP::Attribute->new('attribute' => ( |
1d68af04 |
539 | reader => { |
540 | 'associated_attribute' => \&Class::MOP::Method::Accessor::associated_attribute |
d90b42a6 |
541 | }, |
1d68af04 |
542 | )) |
d90b42a6 |
543 | ); |
544 | |
545 | Class::MOP::Method::Accessor->meta->add_attribute( |
8683db0e |
546 | Class::MOP::Attribute->new('accessor_type' => ( |
c23184fc |
547 | reader => { 'accessor_type' => \&Class::MOP::Method::Accessor::accessor_type }, |
1d68af04 |
548 | )) |
d90b42a6 |
549 | ); |
550 | |
d90b42a6 |
551 | ## -------------------------------------------------------- |
552 | ## Class::MOP::Method::Constructor |
553 | |
554 | Class::MOP::Method::Constructor->meta->add_attribute( |
8683db0e |
555 | Class::MOP::Attribute->new('options' => ( |
1d68af04 |
556 | reader => { |
557 | 'options' => \&Class::MOP::Method::Constructor::options |
d90b42a6 |
558 | }, |
4c105333 |
559 | default => sub { +{} } |
1d68af04 |
560 | )) |
d90b42a6 |
561 | ); |
562 | |
563 | Class::MOP::Method::Constructor->meta->add_attribute( |
8683db0e |
564 | Class::MOP::Attribute->new('associated_metaclass' => ( |
e8a38403 |
565 | init_arg => "metaclass", # FIXME alias and rename |
1d68af04 |
566 | reader => { |
567 | 'associated_metaclass' => \&Class::MOP::Method::Constructor::associated_metaclass |
568 | }, |
569 | )) |
d90b42a6 |
570 | ); |
571 | |
572 | ## -------------------------------------------------------- |
86482605 |
573 | ## Class::MOP::Instance |
574 | |
575 | # NOTE: |
1d68af04 |
576 | # these don't yet do much of anything, but are just |
86482605 |
577 | # included for completeness |
578 | |
579 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
580 | Class::MOP::Attribute->new('associated_metaclass', |
581 | reader => { associated_metaclass => \&Class::MOP::Instance::associated_metaclass }, |
582 | ), |
86482605 |
583 | ); |
584 | |
585 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
586 | Class::MOP::Attribute->new('_class_name', |
587 | init_arg => undef, |
588 | reader => { _class_name => \&Class::MOP::Instance::_class_name }, |
589 | #lazy => 1, # not yet supported by Class::MOP but out our version does it anyway |
590 | #default => sub { $_[0]->associated_metaclass->name }, |
591 | ), |
592 | ); |
593 | |
594 | Class::MOP::Instance->meta->add_attribute( |
595 | Class::MOP::Attribute->new('attributes', |
0b5d46da |
596 | reader => { attributes => \&Class::MOP::Instance::get_all_attributes }, |
74890687 |
597 | ), |
32bfc810 |
598 | ); |
599 | |
600 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
601 | Class::MOP::Attribute->new('slots', |
602 | reader => { slots => \&Class::MOP::Instance::slots }, |
603 | ), |
86482605 |
604 | ); |
605 | |
63d08a9e |
606 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
607 | Class::MOP::Attribute->new('slot_hash', |
608 | reader => { slot_hash => \&Class::MOP::Instance::slot_hash }, |
609 | ), |
63d08a9e |
610 | ); |
611 | |
612 | |
caa051fa |
613 | # we need the meta instance of the meta instance to be created now, in order |
614 | # for the constructor to be able to use it |
615 | Class::MOP::Instance->meta->get_meta_instance; |
616 | |
caa051fa |
617 | # pretend the add_method never happenned. it hasn't yet affected anything |
618 | undef Class::MOP::Instance->meta->{_package_cache_flag}; |
619 | |
86482605 |
620 | ## -------------------------------------------------------- |
f0480c45 |
621 | ## Now close all the Class::MOP::* classes |
4d47b77f |
622 | |
1aa13cf4 |
623 | # NOTE: we don't need to inline the the accessors this only lengthens |
624 | # the compile time of the MOP, and gives us no actual benefits. |
0b9372a2 |
625 | |
626 | $_->meta->make_immutable( |
6c2f6b5c |
627 | inline_constructor => 1, |
628 | replace_constructor => 1, |
629 | constructor_name => "_new", |
45582002 |
630 | inline_accessors => 0, |
0b9372a2 |
631 | ) for qw/ |
1d68af04 |
632 | Class::MOP::Package |
633 | Class::MOP::Module |
634 | Class::MOP::Class |
635 | |
0b9372a2 |
636 | Class::MOP::Attribute |
1d68af04 |
637 | Class::MOP::Method |
638 | Class::MOP::Instance |
639 | |
640 | Class::MOP::Object |
0b9372a2 |
641 | |
565f0cbb |
642 | Class::MOP::Method::Generated |
1d68af04 |
643 | |
ba38bf08 |
644 | Class::MOP::Method::Accessor |
1d68af04 |
645 | Class::MOP::Method::Constructor |
646 | Class::MOP::Method::Wrapped |
0b9372a2 |
647 | /; |
b6164407 |
648 | |
94b19069 |
649 | 1; |
650 | |
651 | __END__ |
652 | |
653 | =pod |
654 | |
1d68af04 |
655 | =head1 NAME |
94b19069 |
656 | |
657 | Class::MOP - A Meta Object Protocol for Perl 5 |
658 | |
5b60bf98 |
659 | =head1 DESCRIPTION |
94b19069 |
660 | |
127d39a7 |
661 | This module is a fully functioning meta object protocol for the |
1d68af04 |
662 | Perl 5 object system. It makes no attempt to change the behavior or |
663 | characteristics of the Perl 5 object system, only to create a |
27e31eaf |
664 | protocol for its manipulation and introspection. |
94b19069 |
665 | |
828ecf13 |
666 | That said, it does attempt to create the tools for building a rich set |
667 | of extensions to the Perl 5 object system. Every attempt has been made |
668 | to abide by the spirit of the Perl 5 object system that we all know |
669 | and love. |
94b19069 |
670 | |
828ecf13 |
671 | This documentation is sparse on conceptual details. We suggest looking |
672 | at the items listed in the L<SEE ALSO> section for more |
673 | information. In particular the book "The Art of the Meta Object |
674 | Protocol" was very influential in the development of this system. |
40483095 |
675 | |
bfe4d0fc |
676 | =head2 What is a Meta Object Protocol? |
677 | |
1d68af04 |
678 | A meta object protocol is an API to an object system. |
bfe4d0fc |
679 | |
828ecf13 |
680 | To be more specific, it abstracts the components of an object system |
681 | (classes, object, methods, object attributes, etc.). These |
682 | abstractions can then be used to inspect and manipulate the object |
683 | system which they describe. |
bfe4d0fc |
684 | |
1d68af04 |
685 | It can be said that there are two MOPs for any object system; the |
828ecf13 |
686 | implicit MOP and the explicit MOP. The implicit MOP handles things |
1d68af04 |
687 | like method dispatch or inheritance, which happen automatically as |
688 | part of how the object system works. The explicit MOP typically |
689 | handles the introspection/reflection features of the object system. |
bfe4d0fc |
690 | |
828ecf13 |
691 | All object systems have implicit MOPs. Without one, they would not |
5b60bf98 |
692 | work. Explicit MOPs are much less common, and depending on the |
693 | language can vary from restrictive (Reflection in Java or C#) to wide |
694 | open (CLOS is a perfect example). |
e16da3e6 |
695 | |
828ecf13 |
696 | =head2 Yet Another Class Builder! Why? |
697 | |
698 | This is B<not> a class builder so much as a I<class builder |
699 | B<builder>>. The intent is that an end user will not use this module |
700 | directly, but instead this module is used by module authors to build |
701 | extensions and features onto the Perl 5 object system. |
702 | |
703 | This system is used by L<Moose>, which supplies a powerful class |
704 | builder system built entirely on top of C<Class::MOP>. |
e16da3e6 |
705 | |
94b19069 |
706 | =head2 Who is this module for? |
707 | |
828ecf13 |
708 | This module is for anyone who has ever created or wanted to create a |
709 | module for the Class:: namespace. The tools which this module provides |
710 | make doing complex Perl 5 wizardry simpler, by removing such barriers |
711 | as the need to hack symbol tables, or understand the fine details of |
712 | method dispatch. |
94b19069 |
713 | |
bfe4d0fc |
714 | =head2 What changes do I have to make to use this module? |
715 | |
828ecf13 |
716 | This module was designed to be as unintrusive as possible. Many of its |
5b60bf98 |
717 | features are accessible without B<any> change to your existing |
828ecf13 |
718 | code. It is meant to be a compliment to your existing code and not an |
719 | intrusion on your code base. Unlike many other B<Class::> modules, |
720 | this module B<does not> require you subclass it, or even that you |
721 | C<use> it in within your module's package. |
bfe4d0fc |
722 | |
1d68af04 |
723 | The only features which requires additions to your code are the |
2eb717d5 |
724 | attribute handling and instance construction features, and these are |
1d68af04 |
725 | both completely optional features. The only reason for this is because |
726 | Perl 5's object system does not actually have these features built |
2eb717d5 |
727 | in. More information about this feature can be found below. |
bfe4d0fc |
728 | |
828ecf13 |
729 | =head2 About Performance |
730 | |
5b60bf98 |
731 | It is a common misconception that explicit MOPs are a performance hit. |
828ecf13 |
732 | This is not a universal truth, it is a side-effect of some specific |
733 | implementations. For instance, using Java reflection is slow because |
734 | the JVM cannot take advantage of any compiler optimizations, and the |
735 | JVM has to deal with much more runtime type information as well. |
bfe4d0fc |
736 | |
828ecf13 |
737 | Reflection in C# is marginally better as it was designed into the |
738 | language and runtime (the CLR). In contrast, CLOS (the Common Lisp |
739 | Object System) was built to support an explicit MOP, and so |
740 | performance is tuned for it. |
1d68af04 |
741 | |
828ecf13 |
742 | This library in particular does its absolute best to avoid putting |
1d68af04 |
743 | B<any> drain at all upon your code's performance. In fact, by itself |
828ecf13 |
744 | it does nothing to affect your existing code. So you only pay for what |
745 | you actually use. |
bfe4d0fc |
746 | |
550d56db |
747 | =head2 About Metaclass compatibility |
748 | |
1d68af04 |
749 | This module makes sure that all metaclasses created are both upwards |
750 | and downwards compatible. The topic of metaclass compatibility is |
751 | highly esoteric and is something only encountered when doing deep and |
752 | involved metaclass hacking. There are two basic kinds of metaclass |
753 | incompatibility; upwards and downwards. |
550d56db |
754 | |
1d68af04 |
755 | Upwards metaclass compatibility means that the metaclass of a |
756 | given class is either the same as (or a subclass of) all of the |
550d56db |
757 | class's ancestors. |
758 | |
1d68af04 |
759 | Downward metaclass compatibility means that the metaclasses of a |
828ecf13 |
760 | given class's ancestors are all either the same as (or a subclass |
550d56db |
761 | of) that metaclass. |
762 | |
1d68af04 |
763 | Here is a diagram showing a set of two classes (C<A> and C<B>) and |
764 | two metaclasses (C<Meta::A> and C<Meta::B>) which have correct |
550d56db |
765 | metaclass compatibility both upwards and downwards. |
766 | |
767 | +---------+ +---------+ |
768 | | Meta::A |<----| Meta::B | <....... (instance of ) |
1d68af04 |
769 | +---------+ +---------+ <------- (inherits from) |
550d56db |
770 | ^ ^ |
771 | : : |
772 | +---------+ +---------+ |
773 | | A |<----| B | |
774 | +---------+ +---------+ |
775 | |
1d68af04 |
776 | As I said this is a highly esoteric topic and one you will only run |
828ecf13 |
777 | into if you do a lot of subclassing of L<Class::MOP::Class>. If you |
778 | are interested in why this is an issue see the paper I<Uniform and |
779 | safe metaclass composition> linked to in the L<SEE ALSO> section of |
780 | this document. |
550d56db |
781 | |
aa448b16 |
782 | =head2 Using custom metaclasses |
783 | |
828ecf13 |
784 | Always use the L<metaclass> pragma when using a custom metaclass, this |
5b60bf98 |
785 | will ensure the proper initialization order and not accidentally |
786 | create an incorrect type of metaclass for you. This is a very rare |
787 | problem, and one which can only occur if you are doing deep metaclass |
aa448b16 |
788 | programming. So in other words, don't worry about it. |
789 | |
828ecf13 |
790 | Note that if you're using L<Moose> we encourage you to I<not> use |
791 | L<metaclass> pragma, and instead use L<Moose::Util::MetaRole> to apply |
792 | roles to a class's metaclasses. This topic is covered at length in |
793 | various L<Moose::Cookbook> recipes. |
794 | |
94b19069 |
795 | =head1 PROTOCOLS |
796 | |
828ecf13 |
797 | The meta-object protocol is divided into 4 main sub-protocols: |
94b19069 |
798 | |
828ecf13 |
799 | =head2 The Class protocol |
94b19069 |
800 | |
1d68af04 |
801 | This provides a means of manipulating and introspecting a Perl 5 |
828ecf13 |
802 | class. It handles symbol table hacking for you, and provides a rich |
803 | set of methods that go beyond simple package introspection. |
94b19069 |
804 | |
552e3d24 |
805 | See L<Class::MOP::Class> for more details. |
806 | |
828ecf13 |
807 | =head2 The Attribute protocol |
94b19069 |
808 | |
828ecf13 |
809 | This provides a consistent representation for an attribute of a Perl 5 |
810 | class. Since there are so many ways to create and handle attributes in |
811 | Perl 5 OO, the Attribute protocol provide as much of a unified |
812 | approach as possible. Of course, you are always free to extend this |
813 | protocol by subclassing the appropriate classes. |
94b19069 |
814 | |
552e3d24 |
815 | See L<Class::MOP::Attribute> for more details. |
816 | |
828ecf13 |
817 | =head2 The Method protocol |
94b19069 |
818 | |
828ecf13 |
819 | This provides a means of manipulating and introspecting methods in the |
820 | Perl 5 object system. As with attributes, there are many ways to |
1d68af04 |
821 | approach this topic, so we try to keep it pretty basic, while still |
94b19069 |
822 | making it possible to extend the system in many ways. |
823 | |
552e3d24 |
824 | See L<Class::MOP::Method> for more details. |
94b19069 |
825 | |
828ecf13 |
826 | =head2 The Instance protocol |
127d39a7 |
827 | |
828ecf13 |
828 | This provides a layer of abstraction for creating object instances. |
829 | Since the other layers use this protocol, it is relatively easy to |
830 | change the type of your instances from the default hash reference to |
831 | some other type of reference. Several examples are provided in the |
832 | F<examples/> directory included in this distribution. |
127d39a7 |
833 | |
834 | See L<Class::MOP::Instance> for more details. |
835 | |
be7677c7 |
836 | =head1 FUNCTIONS |
837 | |
828ecf13 |
838 | Note that this module does not export any constants or functions. |
839 | |
c1d5345a |
840 | =head2 Constants |
841 | |
842 | =over 4 |
843 | |
828ecf13 |
844 | =item I<Class::MOP::IS_RUNNING_ON_5_10> |
c1d5345a |
845 | |
828ecf13 |
846 | We set this constant depending on what version perl we are on, this |
847 | allows us to take advantage of new 5.10 features and stay backwards |
5b60bf98 |
848 | compatible. |
c1d5345a |
849 | |
828ecf13 |
850 | =item I<Class::MOP::HAVE_ISAREV> |
9efe16ca |
851 | |
5b60bf98 |
852 | Whether or not the L<mro> pragma provides C<get_isarev>, a much faster |
828ecf13 |
853 | way to get all the subclasses of a certain class. |
9efe16ca |
854 | |
c1d5345a |
855 | =back |
856 | |
448b6e55 |
857 | =head2 Utility functions |
858 | |
bd07fbdb |
859 | Note that these are all called as B<functions, not methods>. |
081a927b |
860 | |
448b6e55 |
861 | =over 4 |
862 | |
828ecf13 |
863 | =item B<Class::MOP::load_class($class_name)> |
448b6e55 |
864 | |
828ecf13 |
865 | This will load the specified C<$class_name>. This function can be used |
866 | in place of tricks like C<eval "use $module"> or using C<require> |
01f3a099 |
867 | unconditionally. This will return the metaclass of C<$class_name>. |
448b6e55 |
868 | |
828ecf13 |
869 | =item B<Class::MOP::is_class_loaded($class_name)> |
448b6e55 |
870 | |
15ab5451 |
871 | Returns a boolean indicating whether or not C<$class_name> has been |
872 | loaded. |
448b6e55 |
873 | |
828ecf13 |
874 | This does a basic check of the symbol table to try and determine as |
875 | best it can if the C<$class_name> is loaded, it is probably correct |
876 | about 99% of the time, but it can be fooled into reporting false |
877 | positives. |
448b6e55 |
878 | |
cdac22cc |
879 | =item B<Class::MOP::get_code_info($code)> |
880 | |
881 | This function returns two values, the name of the package the C<$code> |
882 | is from and the name of the C<$code> itself. This is used by several |
5b60bf98 |
883 | elements of the MOP to determine where a given C<$code> reference is |
cdac22cc |
884 | from. |
885 | |
44ba77a3 |
886 | =item B<Class::MOP::class_of($instance_or_class_name)> |
887 | |
888 | This will return the metaclass of the given instance or class name. |
889 | Even if the class lacks a metaclass, no metaclass will be initialized |
890 | and C<undef> will be returned. |
891 | |
828ecf13 |
892 | =item B<Class::MOP::check_package_cache_flag($pkg)> |
e0e4674a |
893 | |
bd07fbdb |
894 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
895 | |
828ecf13 |
896 | This will return an integer that is managed by L<Class::MOP::Class> to |
897 | determine if a module's symbol table has been altered. |
127d39a7 |
898 | |
828ecf13 |
899 | In Perl 5.10 or greater, this flag is package specific. However in |
900 | versions prior to 5.10, this will use the C<PL_sub_generation> |
901 | variable which is not package specific. |
127d39a7 |
902 | |
828ecf13 |
903 | =item B<Class::MOP::load_first_existing_class(@class_names)> |
063ad0c5 |
904 | |
905 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
906 | |
907 | Given a list of class names, this function will attempt to load each |
908 | one in turn. |
909 | |
828ecf13 |
910 | If it finds a class it can load, it will return that class' name. If |
911 | none of the classes can be loaded, it will throw an exception. |
063ad0c5 |
912 | |
448b6e55 |
913 | =back |
914 | |
915 | =head2 Metaclass cache functions |
916 | |
6c842677 |
917 | Class::MOP holds a cache of metaclasses. The following are functions |
1d68af04 |
918 | (B<not methods>) which can be used to access that cache. It is not |
6c842677 |
919 | recommended that you mess with these. Bad things could happen, but if |
920 | you are brave and willing to risk it: go for it! |
be7677c7 |
921 | |
922 | =over 4 |
923 | |
828ecf13 |
924 | =item B<Class::MOP::get_all_metaclasses> |
be7677c7 |
925 | |
6c842677 |
926 | This will return a hash of all the metaclass instances that have |
828ecf13 |
927 | been cached by L<Class::MOP::Class>, keyed by the package name. |
b9d9fc0b |
928 | |
828ecf13 |
929 | =item B<Class::MOP::get_all_metaclass_instances> |
be7677c7 |
930 | |
6c842677 |
931 | This will return a list of all the metaclass instances that have |
828ecf13 |
932 | been cached by L<Class::MOP::Class>. |
b9d9fc0b |
933 | |
828ecf13 |
934 | =item B<Class::MOP::get_all_metaclass_names> |
be7677c7 |
935 | |
6c842677 |
936 | This will return a list of all the metaclass names that have |
828ecf13 |
937 | been cached by L<Class::MOP::Class>. |
b9d9fc0b |
938 | |
828ecf13 |
939 | =item B<Class::MOP::get_metaclass_by_name($name)> |
be7677c7 |
940 | |
828ecf13 |
941 | This will return a cached L<Class::MOP::Class> instance, or nothing |
6c842677 |
942 | if no metaclass exists with that C<$name>. |
127d39a7 |
943 | |
828ecf13 |
944 | =item B<Class::MOP::store_metaclass_by_name($name, $meta)> |
be7677c7 |
945 | |
127d39a7 |
946 | This will store a metaclass in the cache at the supplied C<$key>. |
947 | |
828ecf13 |
948 | =item B<Class::MOP::weaken_metaclass($name)> |
be7677c7 |
949 | |
6c842677 |
950 | In rare cases (e.g. anonymous metaclasses) it is desirable to |
951 | store a weakened reference in the metaclass cache. This |
952 | function will weaken the reference to the metaclass stored |
953 | in C<$name>. |
127d39a7 |
954 | |
828ecf13 |
955 | =item B<Class::MOP::does_metaclass_exist($name)> |
be7677c7 |
956 | |
828ecf13 |
957 | This will return true of there exists a metaclass stored in the |
6c842677 |
958 | C<$name> key, and return false otherwise. |
127d39a7 |
959 | |
828ecf13 |
960 | =item B<Class::MOP::remove_metaclass_by_name($name)> |
be7677c7 |
961 | |
6c842677 |
962 | This will remove the metaclass stored in the C<$name> key. |
127d39a7 |
963 | |
be7677c7 |
964 | =back |
965 | |
552e3d24 |
966 | =head1 SEE ALSO |
8b978dd5 |
967 | |
552e3d24 |
968 | =head2 Books |
8b978dd5 |
969 | |
1d68af04 |
970 | There are very few books out on Meta Object Protocols and Metaclasses |
971 | because it is such an esoteric topic. The following books are really |
972 | the only ones I have found. If you know of any more, B<I<please>> |
a2e85e6c |
973 | email me and let me know, I would love to hear about them. |
974 | |
8b978dd5 |
975 | =over 4 |
976 | |
15ab5451 |
977 | =item I<The Art of the Meta Object Protocol> |
8b978dd5 |
978 | |
15ab5451 |
979 | =item I<Advances in Object-Oriented Metalevel Architecture and Reflection> |
8b978dd5 |
980 | |
15ab5451 |
981 | =item I<Putting MetaClasses to Work> |
b51af7f9 |
982 | |
15ab5451 |
983 | =item I<Smalltalk: The Language> |
a2e85e6c |
984 | |
94b19069 |
985 | =back |
986 | |
550d56db |
987 | =head2 Papers |
988 | |
989 | =over 4 |
990 | |
15ab5451 |
991 | =item "Uniform and safe metaclass composition" |
550d56db |
992 | |
1d68af04 |
993 | An excellent paper by the people who brought us the original Traits paper. |
994 | This paper is on how Traits can be used to do safe metaclass composition, |
995 | and offers an excellent introduction section which delves into the topic of |
550d56db |
996 | metaclass compatibility. |
997 | |
998 | L<http://www.iam.unibe.ch/~scg/Archive/Papers/Duca05ySafeMetaclassTrait.pdf> |
999 | |
15ab5451 |
1000 | =item "Safe Metaclass Programming" |
550d56db |
1001 | |
1d68af04 |
1002 | This paper seems to precede the above paper, and propose a mix-in based |
1003 | approach as opposed to the Traits based approach. Both papers have similar |
1004 | information on the metaclass compatibility problem space. |
550d56db |
1005 | |
1006 | L<http://citeseer.ist.psu.edu/37617.html> |
1007 | |
1008 | =back |
1009 | |
552e3d24 |
1010 | =head2 Prior Art |
8b978dd5 |
1011 | |
1012 | =over 4 |
1013 | |
7184ca14 |
1014 | =item The Perl 6 MetaModel work in the Pugs project |
8b978dd5 |
1015 | |
1016 | =over 4 |
1017 | |
552e3d24 |
1018 | =item L<http://svn.openfoundry.org/pugs/perl5/Perl6-MetaModel> |
8b978dd5 |
1019 | |
552e3d24 |
1020 | =item L<http://svn.openfoundry.org/pugs/perl5/Perl6-ObjectSpace> |
8b978dd5 |
1021 | |
1022 | =back |
1023 | |
94b19069 |
1024 | =back |
1025 | |
1d68af04 |
1026 | =head2 Articles |
f8dfcfb7 |
1027 | |
1028 | =over 4 |
1029 | |
1d68af04 |
1030 | =item CPAN Module Review of Class::MOP |
f8dfcfb7 |
1031 | |
1032 | L<http://www.oreillynet.com/onlamp/blog/2006/06/cpan_module_review_classmop.html> |
1033 | |
1034 | =back |
1035 | |
a2e85e6c |
1036 | =head1 SIMILAR MODULES |
1037 | |
1d68af04 |
1038 | As I have said above, this module is a class-builder-builder, so it is |
1039 | not the same thing as modules like L<Class::Accessor> and |
1040 | L<Class::MethodMaker>. That being said there are very few modules on CPAN |
1041 | with similar goals to this module. The one I have found which is most |
1042 | like this module is L<Class::Meta>, although it's philosophy and the MOP it |
1043 | creates are very different from this modules. |
94b19069 |
1044 | |
a2e85e6c |
1045 | =head1 BUGS |
1046 | |
1d68af04 |
1047 | All complex software has bugs lurking in it, and this module is no |
a2e85e6c |
1048 | exception. If you find a bug please either email me, or add the bug |
1049 | to cpan-RT. |
1050 | |
1051 | =head1 ACKNOWLEDGEMENTS |
1052 | |
1053 | =over 4 |
1054 | |
b9d9fc0b |
1055 | =item Rob Kinyon |
a2e85e6c |
1056 | |
1d68af04 |
1057 | Thanks to Rob for actually getting the development of this module kick-started. |
a2e85e6c |
1058 | |
1059 | =back |
1060 | |
1a09d9cc |
1061 | =head1 AUTHORS |
94b19069 |
1062 | |
a2e85e6c |
1063 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
552e3d24 |
1064 | |
9c8cda90 |
1065 | B<with contributions from:> |
1066 | |
1067 | Brandon (blblack) Black |
1068 | |
4f116037 |
1069 | Florian (rafl) Ragwitz |
1070 | |
9c8cda90 |
1071 | Guillermo (groditi) Roditi |
1072 | |
9195ddff |
1073 | Matt (mst) Trout |
1074 | |
9c8cda90 |
1075 | Rob (robkinyon) Kinyon |
1076 | |
1077 | Yuval (nothingmuch) Kogman |
1a09d9cc |
1078 | |
f430cfa4 |
1079 | Scott (konobi) McWhirter |
1080 | |
94b19069 |
1081 | =head1 COPYRIGHT AND LICENSE |
1082 | |
070bb6c9 |
1083 | Copyright 2006-2009 by Infinity Interactive, Inc. |
94b19069 |
1084 | |
1085 | L<http://www.iinteractive.com> |
1086 | |
1087 | This library is free software; you can redistribute it and/or modify |
1d68af04 |
1088 | it under the same terms as Perl itself. |
94b19069 |
1089 | |
1090 | =cut |