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 | |
86866fb5 |
62 | # This handles instances as well as class names |
63 | sub class_of { |
64 | my $class = blessed($_[0]) || $_[0]; |
65 | return $METAS{$class}; |
66 | } |
67 | |
be7677c7 |
68 | # NOTE: |
1d68af04 |
69 | # We only cache metaclasses, meaning instances of |
70 | # Class::MOP::Class. We do not cache instance of |
be7677c7 |
71 | # Class::MOP::Package or Class::MOP::Module. Mostly |
1d68af04 |
72 | # because I don't yet see a good reason to do so. |
be7677c7 |
73 | } |
74 | |
063ad0c5 |
75 | sub load_first_existing_class { |
f280f05c |
76 | my @classes = @_ |
77 | or return; |
5a24cf8a |
78 | |
79 | foreach my $class (@classes) { |
80 | unless ( _is_valid_class_name($class) ) { |
81 | my $display = defined($class) ? $class : 'undef'; |
82 | confess "Invalid class name ($display)"; |
83 | } |
ab5e2f48 |
84 | } |
85 | |
063ad0c5 |
86 | my $found; |
5a24cf8a |
87 | my %exceptions; |
063ad0c5 |
88 | for my $class (@classes) { |
89 | my $e = _try_load_one_class($class); |
90 | |
5a24cf8a |
91 | if ($e) { |
063ad0c5 |
92 | $exceptions{$class} = $e; |
5a24cf8a |
93 | } |
94 | else { |
063ad0c5 |
95 | $found = $class; |
96 | last; |
5a24cf8a |
97 | } |
063ad0c5 |
98 | } |
5a24cf8a |
99 | |
1d8153bd |
100 | return $found if $found; |
07940968 |
101 | |
063ad0c5 |
102 | confess join( |
103 | "\n", |
104 | map { |
105 | sprintf( |
fea44045 |
106 | "Could not load class (%s) because : %s", $_, |
063ad0c5 |
107 | $exceptions{$_} |
108 | ) |
109 | } @classes |
f280f05c |
110 | ); |
5a24cf8a |
111 | } |
112 | |
063ad0c5 |
113 | sub _try_load_one_class { |
114 | my $class = shift; |
115 | |
116 | return if is_class_loaded($class); |
117 | |
118 | my $file = $class . '.pm'; |
119 | $file =~ s{::}{/}g; |
120 | |
121 | return do { |
122 | local $@; |
123 | eval { require($file) }; |
124 | $@; |
125 | }; |
126 | } |
127 | |
5a24cf8a |
128 | sub load_class { |
1d8153bd |
129 | my $class = load_first_existing_class($_[0]); |
130 | return get_metaclass_by_name($class) || $class; |
448b6e55 |
131 | } |
132 | |
2c0fb064 |
133 | sub _is_valid_class_name { |
134 | my $class = shift; |
135 | |
136 | return 0 if ref($class); |
137 | return 0 unless defined($class); |
138 | return 0 unless length($class); |
139 | |
140 | return 1 if $class =~ /^\w+(?:::\w+)*$/; |
141 | |
142 | return 0; |
143 | } |
144 | |
aa448b16 |
145 | ## ---------------------------------------------------------------------------- |
146 | ## Setting up our environment ... |
147 | ## ---------------------------------------------------------------------------- |
1d68af04 |
148 | ## Class::MOP needs to have a few things in the global perl environment so |
aa448b16 |
149 | ## that it can operate effectively. Those things are done here. |
150 | ## ---------------------------------------------------------------------------- |
151 | |
3bf7644b |
152 | # ... nothing yet actually ;) |
8b978dd5 |
153 | |
b51af7f9 |
154 | ## ---------------------------------------------------------------------------- |
1d68af04 |
155 | ## Bootstrapping |
b51af7f9 |
156 | ## ---------------------------------------------------------------------------- |
1d68af04 |
157 | ## The code below here is to bootstrap our MOP with itself. This is also |
b51af7f9 |
158 | ## sometimes called "tying the knot". By doing this, we make it much easier |
159 | ## to extend the MOP through subclassing and such since now you can use the |
1d68af04 |
160 | ## MOP itself to extend itself. |
161 | ## |
b51af7f9 |
162 | ## Yes, I know, thats weird and insane, but it's a good thing, trust me :) |
1d68af04 |
163 | ## ---------------------------------------------------------------------------- |
727919c5 |
164 | |
1d68af04 |
165 | # We need to add in the meta-attributes here so that |
166 | # any subclass of Class::MOP::* will be able to |
727919c5 |
167 | # inherit them using &construct_instance |
168 | |
f0480c45 |
169 | ## -------------------------------------------------------- |
6d5355c3 |
170 | ## Class::MOP::Package |
727919c5 |
171 | |
6d5355c3 |
172 | Class::MOP::Package->meta->add_attribute( |
8683db0e |
173 | Class::MOP::Attribute->new('package' => ( |
b880e0de |
174 | reader => { |
1d68af04 |
175 | # NOTE: we need to do this in order |
176 | # for the instance meta-object to |
b880e0de |
177 | # not fall into meta-circular death |
1d68af04 |
178 | # |
ce2ae40f |
179 | # we just alias the original method |
1d68af04 |
180 | # rather than re-produce it here |
ce2ae40f |
181 | 'name' => \&Class::MOP::Package::name |
b880e0de |
182 | }, |
727919c5 |
183 | )) |
184 | ); |
185 | |
a5e51f0b |
186 | Class::MOP::Package->meta->add_attribute( |
8683db0e |
187 | Class::MOP::Attribute->new('namespace' => ( |
a5e51f0b |
188 | reader => { |
56dcfc1a |
189 | # NOTE: |
ce2ae40f |
190 | # we just alias the original method |
191 | # rather than re-produce it here |
192 | 'namespace' => \&Class::MOP::Package::namespace |
a5e51f0b |
193 | }, |
2e877f58 |
194 | init_arg => undef, |
c4260b45 |
195 | default => sub { \undef } |
a5e51f0b |
196 | )) |
197 | ); |
198 | |
f0480c45 |
199 | ## -------------------------------------------------------- |
200 | ## Class::MOP::Module |
201 | |
202 | # NOTE: |
1d68af04 |
203 | # yeah this is kind of stretching things a bit, |
f0480c45 |
204 | # but truthfully the version should be an attribute |
1d68af04 |
205 | # of the Module, the weirdness comes from having to |
206 | # stick to Perl 5 convention and store it in the |
207 | # $VERSION package variable. Basically if you just |
208 | # squint at it, it will look how you want it to look. |
f0480c45 |
209 | # Either as a package variable, or as a attribute of |
210 | # the metaclass, isn't abstraction great :) |
211 | |
212 | Class::MOP::Module->meta->add_attribute( |
8683db0e |
213 | Class::MOP::Attribute->new('version' => ( |
f0480c45 |
214 | reader => { |
ce2ae40f |
215 | # NOTE: |
216 | # we just alias the original method |
1d68af04 |
217 | # rather than re-produce it here |
ce2ae40f |
218 | 'version' => \&Class::MOP::Module::version |
f0480c45 |
219 | }, |
2e877f58 |
220 | init_arg => undef, |
c4260b45 |
221 | default => sub { \undef } |
f0480c45 |
222 | )) |
223 | ); |
224 | |
225 | # NOTE: |
1d68af04 |
226 | # By following the same conventions as version here, |
227 | # we are opening up the possibility that people can |
228 | # use the $AUTHORITY in non-Class::MOP modules as |
229 | # well. |
f0480c45 |
230 | |
231 | Class::MOP::Module->meta->add_attribute( |
8683db0e |
232 | Class::MOP::Attribute->new('authority' => ( |
f0480c45 |
233 | reader => { |
ce2ae40f |
234 | # NOTE: |
235 | # we just alias the original method |
1d68af04 |
236 | # rather than re-produce it here |
ce2ae40f |
237 | 'authority' => \&Class::MOP::Module::authority |
1d68af04 |
238 | }, |
2e877f58 |
239 | init_arg => undef, |
c4260b45 |
240 | default => sub { \undef } |
f0480c45 |
241 | )) |
242 | ); |
243 | |
244 | ## -------------------------------------------------------- |
6d5355c3 |
245 | ## Class::MOP::Class |
246 | |
727919c5 |
247 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
248 | Class::MOP::Attribute->new('attributes' => ( |
f7259199 |
249 | reader => { |
1d68af04 |
250 | # NOTE: we need to do this in order |
251 | # for the instance meta-object to |
252 | # not fall into meta-circular death |
253 | # |
ce2ae40f |
254 | # we just alias the original method |
1d68af04 |
255 | # rather than re-produce it here |
ce2ae40f |
256 | 'get_attribute_map' => \&Class::MOP::Class::get_attribute_map |
f7259199 |
257 | }, |
727919c5 |
258 | default => sub { {} } |
259 | )) |
260 | ); |
261 | |
351bd7d4 |
262 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
263 | Class::MOP::Attribute->new('methods' => ( |
1d68af04 |
264 | reader => { |
ce2ae40f |
265 | # NOTE: |
266 | # we just alias the original method |
1d68af04 |
267 | # rather than re-produce it here |
ce2ae40f |
268 | 'get_method_map' => \&Class::MOP::Class::get_method_map |
92330ee2 |
269 | }, |
7855ddba |
270 | default => sub { {} } |
c4260b45 |
271 | )) |
272 | ); |
273 | |
274 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
275 | Class::MOP::Attribute->new('superclasses' => ( |
c23184fc |
276 | accessor => { |
277 | # NOTE: |
278 | # we just alias the original method |
1d68af04 |
279 | # rather than re-produce it here |
c23184fc |
280 | 'superclasses' => \&Class::MOP::Class::superclasses |
281 | }, |
2e877f58 |
282 | init_arg => undef, |
c23184fc |
283 | default => sub { \undef } |
284 | )) |
285 | ); |
286 | |
287 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
288 | Class::MOP::Attribute->new('attribute_metaclass' => ( |
1d68af04 |
289 | reader => { |
6d2118a4 |
290 | # NOTE: |
291 | # we just alias the original method |
1d68af04 |
292 | # rather than re-produce it here |
6d2118a4 |
293 | 'attribute_metaclass' => \&Class::MOP::Class::attribute_metaclass |
1d68af04 |
294 | }, |
351bd7d4 |
295 | default => 'Class::MOP::Attribute', |
296 | )) |
297 | ); |
298 | |
299 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
300 | Class::MOP::Attribute->new('method_metaclass' => ( |
1d68af04 |
301 | reader => { |
6d2118a4 |
302 | # NOTE: |
303 | # we just alias the original method |
1d68af04 |
304 | # rather than re-produce it here |
6d2118a4 |
305 | 'method_metaclass' => \&Class::MOP::Class::method_metaclass |
306 | }, |
1d68af04 |
307 | default => 'Class::MOP::Method', |
351bd7d4 |
308 | )) |
309 | ); |
310 | |
2bab2be6 |
311 | Class::MOP::Class->meta->add_attribute( |
77373da8 |
312 | Class::MOP::Attribute->new('wrapped_method_metaclass' => ( |
313 | reader => { |
314 | # NOTE: |
315 | # we just alias the original method |
316 | # rather than re-produce it here |
317 | 'wrapped_method_metaclass' => \&Class::MOP::Class::wrapped_method_metaclass |
318 | }, |
319 | default => 'Class::MOP::Method::Wrapped', |
320 | )) |
321 | ); |
322 | |
323 | Class::MOP::Class->meta->add_attribute( |
8683db0e |
324 | Class::MOP::Attribute->new('instance_metaclass' => ( |
b880e0de |
325 | reader => { |
1d68af04 |
326 | # NOTE: we need to do this in order |
327 | # for the instance meta-object to |
328 | # not fall into meta-circular death |
329 | # |
ce2ae40f |
330 | # we just alias the original method |
1d68af04 |
331 | # rather than re-produce it here |
ce2ae40f |
332 | 'instance_metaclass' => \&Class::MOP::Class::instance_metaclass |
b880e0de |
333 | }, |
1d68af04 |
334 | default => 'Class::MOP::Instance', |
2bab2be6 |
335 | )) |
336 | ); |
337 | |
44d6ea77 |
338 | Class::MOP::Class->meta->add_attribute( |
339 | Class::MOP::Attribute->new('immutable_transformer' => ( |
340 | reader => { |
341 | 'immutable_transformer' => \&Class::MOP::Class::immutable_transformer |
342 | }, |
343 | writer => { |
344 | '_set_immutable_transformer' => \&Class::MOP::Class::_set_immutable_transformer |
345 | }, |
346 | )) |
347 | ); |
348 | |
9d6dce77 |
349 | # NOTE: |
1d68af04 |
350 | # we don't actually need to tie the knot with |
351 | # Class::MOP::Class here, it is actually handled |
352 | # within Class::MOP::Class itself in the |
353 | # construct_class_instance method. |
9d6dce77 |
354 | |
f0480c45 |
355 | ## -------------------------------------------------------- |
727919c5 |
356 | ## Class::MOP::Attribute |
357 | |
7b31baf4 |
358 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
359 | Class::MOP::Attribute->new('name' => ( |
c23184fc |
360 | reader => { |
1d68af04 |
361 | # NOTE: we need to do this in order |
362 | # for the instance meta-object to |
363 | # not fall into meta-circular death |
364 | # |
ce2ae40f |
365 | # we just alias the original method |
1d68af04 |
366 | # rather than re-produce it here |
ce2ae40f |
367 | 'name' => \&Class::MOP::Attribute::name |
b880e0de |
368 | } |
7b31baf4 |
369 | )) |
370 | ); |
371 | |
372 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
373 | Class::MOP::Attribute->new('associated_class' => ( |
c23184fc |
374 | reader => { |
1d68af04 |
375 | # NOTE: we need to do this in order |
376 | # for the instance meta-object to |
377 | # not fall into meta-circular death |
378 | # |
ce2ae40f |
379 | # we just alias the original method |
1d68af04 |
380 | # rather than re-produce it here |
ce2ae40f |
381 | 'associated_class' => \&Class::MOP::Attribute::associated_class |
b880e0de |
382 | } |
7b31baf4 |
383 | )) |
384 | ); |
385 | |
386 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
387 | Class::MOP::Attribute->new('accessor' => ( |
6d2118a4 |
388 | reader => { 'accessor' => \&Class::MOP::Attribute::accessor }, |
389 | predicate => { 'has_accessor' => \&Class::MOP::Attribute::has_accessor }, |
7b31baf4 |
390 | )) |
391 | ); |
392 | |
393 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
394 | Class::MOP::Attribute->new('reader' => ( |
6d2118a4 |
395 | reader => { 'reader' => \&Class::MOP::Attribute::reader }, |
396 | predicate => { 'has_reader' => \&Class::MOP::Attribute::has_reader }, |
7b31baf4 |
397 | )) |
398 | ); |
399 | |
400 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
401 | Class::MOP::Attribute->new('initializer' => ( |
8ee74136 |
402 | reader => { 'initializer' => \&Class::MOP::Attribute::initializer }, |
403 | predicate => { 'has_initializer' => \&Class::MOP::Attribute::has_initializer }, |
0ab65f99 |
404 | )) |
405 | ); |
406 | |
407 | Class::MOP::Attribute->meta->add_attribute( |
d9d99689 |
408 | Class::MOP::Attribute->new('definition_context' => ( |
409 | reader => { 'definition_context' => \&Class::MOP::Attribute::definition_context }, |
410 | )) |
411 | ); |
412 | |
413 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
414 | Class::MOP::Attribute->new('writer' => ( |
6d2118a4 |
415 | reader => { 'writer' => \&Class::MOP::Attribute::writer }, |
416 | predicate => { 'has_writer' => \&Class::MOP::Attribute::has_writer }, |
7b31baf4 |
417 | )) |
418 | ); |
419 | |
420 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
421 | Class::MOP::Attribute->new('predicate' => ( |
6d2118a4 |
422 | reader => { 'predicate' => \&Class::MOP::Attribute::predicate }, |
423 | predicate => { 'has_predicate' => \&Class::MOP::Attribute::has_predicate }, |
7b31baf4 |
424 | )) |
425 | ); |
426 | |
427 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
428 | Class::MOP::Attribute->new('clearer' => ( |
6d2118a4 |
429 | reader => { 'clearer' => \&Class::MOP::Attribute::clearer }, |
430 | predicate => { 'has_clearer' => \&Class::MOP::Attribute::has_clearer }, |
7d28758b |
431 | )) |
432 | ); |
433 | |
434 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
435 | Class::MOP::Attribute->new('builder' => ( |
1d68af04 |
436 | reader => { 'builder' => \&Class::MOP::Attribute::builder }, |
437 | predicate => { 'has_builder' => \&Class::MOP::Attribute::has_builder }, |
438 | )) |
439 | ); |
440 | |
441 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
442 | Class::MOP::Attribute->new('init_arg' => ( |
6d2118a4 |
443 | reader => { 'init_arg' => \&Class::MOP::Attribute::init_arg }, |
444 | predicate => { 'has_init_arg' => \&Class::MOP::Attribute::has_init_arg }, |
7b31baf4 |
445 | )) |
446 | ); |
447 | |
448 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
449 | Class::MOP::Attribute->new('default' => ( |
7b31baf4 |
450 | # default has a custom 'reader' method ... |
1d68af04 |
451 | predicate => { 'has_default' => \&Class::MOP::Attribute::has_default }, |
7b31baf4 |
452 | )) |
453 | ); |
454 | |
3545c727 |
455 | Class::MOP::Attribute->meta->add_attribute( |
8683db0e |
456 | Class::MOP::Attribute->new('associated_methods' => ( |
c23184fc |
457 | reader => { 'associated_methods' => \&Class::MOP::Attribute::associated_methods }, |
1d68af04 |
458 | default => sub { [] } |
3545c727 |
459 | )) |
460 | ); |
727919c5 |
461 | |
5659d76e |
462 | Class::MOP::Attribute->meta->add_method('clone' => sub { |
a740253a |
463 | my $self = shift; |
1d68af04 |
464 | $self->meta->clone_object($self, @_); |
727919c5 |
465 | }); |
466 | |
f0480c45 |
467 | ## -------------------------------------------------------- |
b6164407 |
468 | ## Class::MOP::Method |
b6164407 |
469 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
470 | Class::MOP::Attribute->new('body' => ( |
c23184fc |
471 | reader => { 'body' => \&Class::MOP::Method::body }, |
b6164407 |
472 | )) |
473 | ); |
474 | |
4c105333 |
475 | Class::MOP::Method->meta->add_attribute( |
5e607260 |
476 | Class::MOP::Attribute->new('associated_metaclass' => ( |
5e607260 |
477 | reader => { 'associated_metaclass' => \&Class::MOP::Method::associated_metaclass }, |
478 | )) |
479 | ); |
480 | |
481 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
482 | Class::MOP::Attribute->new('package_name' => ( |
4c105333 |
483 | reader => { 'package_name' => \&Class::MOP::Method::package_name }, |
484 | )) |
485 | ); |
486 | |
487 | Class::MOP::Method->meta->add_attribute( |
8683db0e |
488 | Class::MOP::Attribute->new('name' => ( |
4c105333 |
489 | reader => { 'name' => \&Class::MOP::Method::name }, |
490 | )) |
491 | ); |
492 | |
2226a8b0 |
493 | Class::MOP::Method->meta->add_attribute( |
494 | Class::MOP::Attribute->new('original_method' => ( |
495 | reader => { 'original_method' => \&Class::MOP::Method::original_method }, |
496 | writer => { '_set_original_method' => \&Class::MOP::Method::_set_original_method }, |
497 | )) |
498 | ); |
499 | |
4c105333 |
500 | Class::MOP::Method->meta->add_method('clone' => sub { |
501 | my $self = shift; |
2226a8b0 |
502 | my $clone = $self->meta->clone_object($self, @_); |
503 | $clone->_set_original_method($self); |
504 | return $clone; |
4c105333 |
505 | }); |
506 | |
b6164407 |
507 | ## -------------------------------------------------------- |
508 | ## Class::MOP::Method::Wrapped |
509 | |
510 | # NOTE: |
1d68af04 |
511 | # the way this item is initialized, this |
512 | # really does not follow the standard |
513 | # practices of attributes, but we put |
b6164407 |
514 | # it here for completeness |
515 | Class::MOP::Method::Wrapped->meta->add_attribute( |
8683db0e |
516 | Class::MOP::Attribute->new('modifier_table') |
b6164407 |
517 | ); |
518 | |
519 | ## -------------------------------------------------------- |
565f0cbb |
520 | ## Class::MOP::Method::Generated |
521 | |
522 | Class::MOP::Method::Generated->meta->add_attribute( |
8683db0e |
523 | Class::MOP::Attribute->new('is_inline' => ( |
565f0cbb |
524 | reader => { 'is_inline' => \&Class::MOP::Method::Generated::is_inline }, |
4c105333 |
525 | default => 0, |
1d68af04 |
526 | )) |
565f0cbb |
527 | ); |
528 | |
d9d99689 |
529 | Class::MOP::Method::Generated->meta->add_attribute( |
530 | Class::MOP::Attribute->new('definition_context' => ( |
531 | reader => { 'definition_context' => \&Class::MOP::Method::Generated::definition_context }, |
532 | )) |
533 | ); |
534 | |
565f0cbb |
535 | ## -------------------------------------------------------- |
d90b42a6 |
536 | ## Class::MOP::Method::Accessor |
537 | |
538 | Class::MOP::Method::Accessor->meta->add_attribute( |
8683db0e |
539 | Class::MOP::Attribute->new('attribute' => ( |
1d68af04 |
540 | reader => { |
541 | 'associated_attribute' => \&Class::MOP::Method::Accessor::associated_attribute |
d90b42a6 |
542 | }, |
1d68af04 |
543 | )) |
d90b42a6 |
544 | ); |
545 | |
546 | Class::MOP::Method::Accessor->meta->add_attribute( |
8683db0e |
547 | Class::MOP::Attribute->new('accessor_type' => ( |
c23184fc |
548 | reader => { 'accessor_type' => \&Class::MOP::Method::Accessor::accessor_type }, |
1d68af04 |
549 | )) |
d90b42a6 |
550 | ); |
551 | |
d90b42a6 |
552 | ## -------------------------------------------------------- |
553 | ## Class::MOP::Method::Constructor |
554 | |
555 | Class::MOP::Method::Constructor->meta->add_attribute( |
8683db0e |
556 | Class::MOP::Attribute->new('options' => ( |
1d68af04 |
557 | reader => { |
558 | 'options' => \&Class::MOP::Method::Constructor::options |
d90b42a6 |
559 | }, |
4c105333 |
560 | default => sub { +{} } |
1d68af04 |
561 | )) |
d90b42a6 |
562 | ); |
563 | |
564 | Class::MOP::Method::Constructor->meta->add_attribute( |
8683db0e |
565 | Class::MOP::Attribute->new('associated_metaclass' => ( |
e8a38403 |
566 | init_arg => "metaclass", # FIXME alias and rename |
1d68af04 |
567 | reader => { |
568 | 'associated_metaclass' => \&Class::MOP::Method::Constructor::associated_metaclass |
569 | }, |
570 | )) |
d90b42a6 |
571 | ); |
572 | |
573 | ## -------------------------------------------------------- |
86482605 |
574 | ## Class::MOP::Instance |
575 | |
576 | # NOTE: |
1d68af04 |
577 | # these don't yet do much of anything, but are just |
86482605 |
578 | # included for completeness |
579 | |
580 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
581 | Class::MOP::Attribute->new('associated_metaclass', |
582 | reader => { associated_metaclass => \&Class::MOP::Instance::associated_metaclass }, |
583 | ), |
86482605 |
584 | ); |
585 | |
586 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
587 | Class::MOP::Attribute->new('_class_name', |
588 | init_arg => undef, |
589 | reader => { _class_name => \&Class::MOP::Instance::_class_name }, |
590 | #lazy => 1, # not yet supported by Class::MOP but out our version does it anyway |
591 | #default => sub { $_[0]->associated_metaclass->name }, |
592 | ), |
593 | ); |
594 | |
595 | Class::MOP::Instance->meta->add_attribute( |
596 | Class::MOP::Attribute->new('attributes', |
0b5d46da |
597 | reader => { attributes => \&Class::MOP::Instance::get_all_attributes }, |
74890687 |
598 | ), |
32bfc810 |
599 | ); |
600 | |
601 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
602 | Class::MOP::Attribute->new('slots', |
603 | reader => { slots => \&Class::MOP::Instance::slots }, |
604 | ), |
86482605 |
605 | ); |
606 | |
63d08a9e |
607 | Class::MOP::Instance->meta->add_attribute( |
74890687 |
608 | Class::MOP::Attribute->new('slot_hash', |
609 | reader => { slot_hash => \&Class::MOP::Instance::slot_hash }, |
610 | ), |
63d08a9e |
611 | ); |
612 | |
613 | |
caa051fa |
614 | # we need the meta instance of the meta instance to be created now, in order |
615 | # for the constructor to be able to use it |
616 | Class::MOP::Instance->meta->get_meta_instance; |
617 | |
caa051fa |
618 | # pretend the add_method never happenned. it hasn't yet affected anything |
619 | undef Class::MOP::Instance->meta->{_package_cache_flag}; |
620 | |
86482605 |
621 | ## -------------------------------------------------------- |
f0480c45 |
622 | ## Now close all the Class::MOP::* classes |
4d47b77f |
623 | |
1aa13cf4 |
624 | # NOTE: we don't need to inline the the accessors this only lengthens |
625 | # the compile time of the MOP, and gives us no actual benefits. |
0b9372a2 |
626 | |
627 | $_->meta->make_immutable( |
6c2f6b5c |
628 | inline_constructor => 1, |
629 | replace_constructor => 1, |
630 | constructor_name => "_new", |
45582002 |
631 | inline_accessors => 0, |
0b9372a2 |
632 | ) for qw/ |
1d68af04 |
633 | Class::MOP::Package |
634 | Class::MOP::Module |
635 | Class::MOP::Class |
636 | |
0b9372a2 |
637 | Class::MOP::Attribute |
1d68af04 |
638 | Class::MOP::Method |
639 | Class::MOP::Instance |
640 | |
641 | Class::MOP::Object |
0b9372a2 |
642 | |
565f0cbb |
643 | Class::MOP::Method::Generated |
1d68af04 |
644 | |
ba38bf08 |
645 | Class::MOP::Method::Accessor |
1d68af04 |
646 | Class::MOP::Method::Constructor |
647 | Class::MOP::Method::Wrapped |
0b9372a2 |
648 | /; |
b6164407 |
649 | |
94b19069 |
650 | 1; |
651 | |
652 | __END__ |
653 | |
654 | =pod |
655 | |
1d68af04 |
656 | =head1 NAME |
94b19069 |
657 | |
658 | Class::MOP - A Meta Object Protocol for Perl 5 |
659 | |
5b60bf98 |
660 | =head1 DESCRIPTION |
94b19069 |
661 | |
127d39a7 |
662 | This module is a fully functioning meta object protocol for the |
1d68af04 |
663 | Perl 5 object system. It makes no attempt to change the behavior or |
664 | characteristics of the Perl 5 object system, only to create a |
27e31eaf |
665 | protocol for its manipulation and introspection. |
94b19069 |
666 | |
828ecf13 |
667 | That said, it does attempt to create the tools for building a rich set |
668 | of extensions to the Perl 5 object system. Every attempt has been made |
669 | to abide by the spirit of the Perl 5 object system that we all know |
670 | and love. |
94b19069 |
671 | |
828ecf13 |
672 | This documentation is sparse on conceptual details. We suggest looking |
673 | at the items listed in the L<SEE ALSO> section for more |
674 | information. In particular the book "The Art of the Meta Object |
675 | Protocol" was very influential in the development of this system. |
40483095 |
676 | |
bfe4d0fc |
677 | =head2 What is a Meta Object Protocol? |
678 | |
1d68af04 |
679 | A meta object protocol is an API to an object system. |
bfe4d0fc |
680 | |
828ecf13 |
681 | To be more specific, it abstracts the components of an object system |
682 | (classes, object, methods, object attributes, etc.). These |
683 | abstractions can then be used to inspect and manipulate the object |
684 | system which they describe. |
bfe4d0fc |
685 | |
1d68af04 |
686 | It can be said that there are two MOPs for any object system; the |
828ecf13 |
687 | implicit MOP and the explicit MOP. The implicit MOP handles things |
1d68af04 |
688 | like method dispatch or inheritance, which happen automatically as |
689 | part of how the object system works. The explicit MOP typically |
690 | handles the introspection/reflection features of the object system. |
bfe4d0fc |
691 | |
828ecf13 |
692 | All object systems have implicit MOPs. Without one, they would not |
5b60bf98 |
693 | work. Explicit MOPs are much less common, and depending on the |
694 | language can vary from restrictive (Reflection in Java or C#) to wide |
695 | open (CLOS is a perfect example). |
e16da3e6 |
696 | |
828ecf13 |
697 | =head2 Yet Another Class Builder! Why? |
698 | |
699 | This is B<not> a class builder so much as a I<class builder |
700 | B<builder>>. The intent is that an end user will not use this module |
701 | directly, but instead this module is used by module authors to build |
702 | extensions and features onto the Perl 5 object system. |
703 | |
704 | This system is used by L<Moose>, which supplies a powerful class |
705 | builder system built entirely on top of C<Class::MOP>. |
e16da3e6 |
706 | |
94b19069 |
707 | =head2 Who is this module for? |
708 | |
828ecf13 |
709 | This module is for anyone who has ever created or wanted to create a |
710 | module for the Class:: namespace. The tools which this module provides |
711 | make doing complex Perl 5 wizardry simpler, by removing such barriers |
712 | as the need to hack symbol tables, or understand the fine details of |
713 | method dispatch. |
94b19069 |
714 | |
bfe4d0fc |
715 | =head2 What changes do I have to make to use this module? |
716 | |
828ecf13 |
717 | This module was designed to be as unintrusive as possible. Many of its |
5b60bf98 |
718 | features are accessible without B<any> change to your existing |
828ecf13 |
719 | code. It is meant to be a compliment to your existing code and not an |
720 | intrusion on your code base. Unlike many other B<Class::> modules, |
721 | this module B<does not> require you subclass it, or even that you |
722 | C<use> it in within your module's package. |
bfe4d0fc |
723 | |
1d68af04 |
724 | The only features which requires additions to your code are the |
2eb717d5 |
725 | attribute handling and instance construction features, and these are |
1d68af04 |
726 | both completely optional features. The only reason for this is because |
727 | Perl 5's object system does not actually have these features built |
2eb717d5 |
728 | in. More information about this feature can be found below. |
bfe4d0fc |
729 | |
828ecf13 |
730 | =head2 About Performance |
731 | |
5b60bf98 |
732 | It is a common misconception that explicit MOPs are a performance hit. |
828ecf13 |
733 | This is not a universal truth, it is a side-effect of some specific |
734 | implementations. For instance, using Java reflection is slow because |
735 | the JVM cannot take advantage of any compiler optimizations, and the |
736 | JVM has to deal with much more runtime type information as well. |
bfe4d0fc |
737 | |
828ecf13 |
738 | Reflection in C# is marginally better as it was designed into the |
739 | language and runtime (the CLR). In contrast, CLOS (the Common Lisp |
740 | Object System) was built to support an explicit MOP, and so |
741 | performance is tuned for it. |
1d68af04 |
742 | |
828ecf13 |
743 | This library in particular does its absolute best to avoid putting |
1d68af04 |
744 | B<any> drain at all upon your code's performance. In fact, by itself |
828ecf13 |
745 | it does nothing to affect your existing code. So you only pay for what |
746 | you actually use. |
bfe4d0fc |
747 | |
550d56db |
748 | =head2 About Metaclass compatibility |
749 | |
1d68af04 |
750 | This module makes sure that all metaclasses created are both upwards |
751 | and downwards compatible. The topic of metaclass compatibility is |
752 | highly esoteric and is something only encountered when doing deep and |
753 | involved metaclass hacking. There are two basic kinds of metaclass |
754 | incompatibility; upwards and downwards. |
550d56db |
755 | |
1d68af04 |
756 | Upwards metaclass compatibility means that the metaclass of a |
757 | given class is either the same as (or a subclass of) all of the |
550d56db |
758 | class's ancestors. |
759 | |
1d68af04 |
760 | Downward metaclass compatibility means that the metaclasses of a |
828ecf13 |
761 | given class's ancestors are all either the same as (or a subclass |
550d56db |
762 | of) that metaclass. |
763 | |
1d68af04 |
764 | Here is a diagram showing a set of two classes (C<A> and C<B>) and |
765 | two metaclasses (C<Meta::A> and C<Meta::B>) which have correct |
550d56db |
766 | metaclass compatibility both upwards and downwards. |
767 | |
768 | +---------+ +---------+ |
769 | | Meta::A |<----| Meta::B | <....... (instance of ) |
1d68af04 |
770 | +---------+ +---------+ <------- (inherits from) |
550d56db |
771 | ^ ^ |
772 | : : |
773 | +---------+ +---------+ |
774 | | A |<----| B | |
775 | +---------+ +---------+ |
776 | |
1d68af04 |
777 | As I said this is a highly esoteric topic and one you will only run |
828ecf13 |
778 | into if you do a lot of subclassing of L<Class::MOP::Class>. If you |
779 | are interested in why this is an issue see the paper I<Uniform and |
780 | safe metaclass composition> linked to in the L<SEE ALSO> section of |
781 | this document. |
550d56db |
782 | |
aa448b16 |
783 | =head2 Using custom metaclasses |
784 | |
828ecf13 |
785 | Always use the L<metaclass> pragma when using a custom metaclass, this |
5b60bf98 |
786 | will ensure the proper initialization order and not accidentally |
787 | create an incorrect type of metaclass for you. This is a very rare |
788 | problem, and one which can only occur if you are doing deep metaclass |
aa448b16 |
789 | programming. So in other words, don't worry about it. |
790 | |
828ecf13 |
791 | Note that if you're using L<Moose> we encourage you to I<not> use |
792 | L<metaclass> pragma, and instead use L<Moose::Util::MetaRole> to apply |
793 | roles to a class's metaclasses. This topic is covered at length in |
794 | various L<Moose::Cookbook> recipes. |
795 | |
94b19069 |
796 | =head1 PROTOCOLS |
797 | |
828ecf13 |
798 | The meta-object protocol is divided into 4 main sub-protocols: |
94b19069 |
799 | |
828ecf13 |
800 | =head2 The Class protocol |
94b19069 |
801 | |
1d68af04 |
802 | This provides a means of manipulating and introspecting a Perl 5 |
828ecf13 |
803 | class. It handles symbol table hacking for you, and provides a rich |
804 | set of methods that go beyond simple package introspection. |
94b19069 |
805 | |
552e3d24 |
806 | See L<Class::MOP::Class> for more details. |
807 | |
828ecf13 |
808 | =head2 The Attribute protocol |
94b19069 |
809 | |
828ecf13 |
810 | This provides a consistent representation for an attribute of a Perl 5 |
811 | class. Since there are so many ways to create and handle attributes in |
812 | Perl 5 OO, the Attribute protocol provide as much of a unified |
813 | approach as possible. Of course, you are always free to extend this |
814 | protocol by subclassing the appropriate classes. |
94b19069 |
815 | |
552e3d24 |
816 | See L<Class::MOP::Attribute> for more details. |
817 | |
828ecf13 |
818 | =head2 The Method protocol |
94b19069 |
819 | |
828ecf13 |
820 | This provides a means of manipulating and introspecting methods in the |
821 | Perl 5 object system. As with attributes, there are many ways to |
1d68af04 |
822 | approach this topic, so we try to keep it pretty basic, while still |
94b19069 |
823 | making it possible to extend the system in many ways. |
824 | |
552e3d24 |
825 | See L<Class::MOP::Method> for more details. |
94b19069 |
826 | |
828ecf13 |
827 | =head2 The Instance protocol |
127d39a7 |
828 | |
828ecf13 |
829 | This provides a layer of abstraction for creating object instances. |
830 | Since the other layers use this protocol, it is relatively easy to |
831 | change the type of your instances from the default hash reference to |
832 | some other type of reference. Several examples are provided in the |
833 | F<examples/> directory included in this distribution. |
127d39a7 |
834 | |
835 | See L<Class::MOP::Instance> for more details. |
836 | |
be7677c7 |
837 | =head1 FUNCTIONS |
838 | |
828ecf13 |
839 | Note that this module does not export any constants or functions. |
840 | |
c1d5345a |
841 | =head2 Constants |
842 | |
843 | =over 4 |
844 | |
828ecf13 |
845 | =item I<Class::MOP::IS_RUNNING_ON_5_10> |
c1d5345a |
846 | |
828ecf13 |
847 | We set this constant depending on what version perl we are on, this |
848 | allows us to take advantage of new 5.10 features and stay backwards |
5b60bf98 |
849 | compatible. |
c1d5345a |
850 | |
828ecf13 |
851 | =item I<Class::MOP::HAVE_ISAREV> |
9efe16ca |
852 | |
5b60bf98 |
853 | Whether or not the L<mro> pragma provides C<get_isarev>, a much faster |
828ecf13 |
854 | way to get all the subclasses of a certain class. |
9efe16ca |
855 | |
c1d5345a |
856 | =back |
857 | |
448b6e55 |
858 | =head2 Utility functions |
859 | |
bd07fbdb |
860 | Note that these are all called as B<functions, not methods>. |
081a927b |
861 | |
448b6e55 |
862 | =over 4 |
863 | |
828ecf13 |
864 | =item B<Class::MOP::load_class($class_name)> |
448b6e55 |
865 | |
828ecf13 |
866 | This will load the specified C<$class_name>. This function can be used |
867 | in place of tricks like C<eval "use $module"> or using C<require> |
01f3a099 |
868 | unconditionally. This will return the metaclass of C<$class_name>. |
448b6e55 |
869 | |
828ecf13 |
870 | =item B<Class::MOP::is_class_loaded($class_name)> |
448b6e55 |
871 | |
15ab5451 |
872 | Returns a boolean indicating whether or not C<$class_name> has been |
873 | loaded. |
448b6e55 |
874 | |
828ecf13 |
875 | This does a basic check of the symbol table to try and determine as |
876 | best it can if the C<$class_name> is loaded, it is probably correct |
877 | about 99% of the time, but it can be fooled into reporting false |
878 | positives. |
448b6e55 |
879 | |
cdac22cc |
880 | =item B<Class::MOP::get_code_info($code)> |
881 | |
882 | This function returns two values, the name of the package the C<$code> |
883 | is from and the name of the C<$code> itself. This is used by several |
5b60bf98 |
884 | elements of the MOP to determine where a given C<$code> reference is |
cdac22cc |
885 | from. |
886 | |
44ba77a3 |
887 | =item B<Class::MOP::class_of($instance_or_class_name)> |
888 | |
889 | This will return the metaclass of the given instance or class name. |
890 | Even if the class lacks a metaclass, no metaclass will be initialized |
891 | and C<undef> will be returned. |
892 | |
828ecf13 |
893 | =item B<Class::MOP::check_package_cache_flag($pkg)> |
e0e4674a |
894 | |
bd07fbdb |
895 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
896 | |
828ecf13 |
897 | This will return an integer that is managed by L<Class::MOP::Class> to |
898 | determine if a module's symbol table has been altered. |
127d39a7 |
899 | |
828ecf13 |
900 | In Perl 5.10 or greater, this flag is package specific. However in |
901 | versions prior to 5.10, this will use the C<PL_sub_generation> |
902 | variable which is not package specific. |
127d39a7 |
903 | |
828ecf13 |
904 | =item B<Class::MOP::load_first_existing_class(@class_names)> |
063ad0c5 |
905 | |
906 | B<NOTE: DO NOT USE THIS FUNCTION, IT IS FOR INTERNAL USE ONLY!> |
907 | |
908 | Given a list of class names, this function will attempt to load each |
909 | one in turn. |
910 | |
828ecf13 |
911 | If it finds a class it can load, it will return that class' name. If |
912 | none of the classes can be loaded, it will throw an exception. |
063ad0c5 |
913 | |
448b6e55 |
914 | =back |
915 | |
916 | =head2 Metaclass cache functions |
917 | |
6c842677 |
918 | Class::MOP holds a cache of metaclasses. The following are functions |
1d68af04 |
919 | (B<not methods>) which can be used to access that cache. It is not |
6c842677 |
920 | recommended that you mess with these. Bad things could happen, but if |
921 | you are brave and willing to risk it: go for it! |
be7677c7 |
922 | |
923 | =over 4 |
924 | |
828ecf13 |
925 | =item B<Class::MOP::get_all_metaclasses> |
be7677c7 |
926 | |
6c842677 |
927 | This will return a hash of all the metaclass instances that have |
828ecf13 |
928 | been cached by L<Class::MOP::Class>, keyed by the package name. |
b9d9fc0b |
929 | |
828ecf13 |
930 | =item B<Class::MOP::get_all_metaclass_instances> |
be7677c7 |
931 | |
6c842677 |
932 | This will return a list of all the metaclass instances that have |
828ecf13 |
933 | been cached by L<Class::MOP::Class>. |
b9d9fc0b |
934 | |
828ecf13 |
935 | =item B<Class::MOP::get_all_metaclass_names> |
be7677c7 |
936 | |
6c842677 |
937 | This will return a list of all the metaclass names that have |
828ecf13 |
938 | been cached by L<Class::MOP::Class>. |
b9d9fc0b |
939 | |
828ecf13 |
940 | =item B<Class::MOP::get_metaclass_by_name($name)> |
be7677c7 |
941 | |
828ecf13 |
942 | This will return a cached L<Class::MOP::Class> instance, or nothing |
6c842677 |
943 | if no metaclass exists with that C<$name>. |
127d39a7 |
944 | |
828ecf13 |
945 | =item B<Class::MOP::store_metaclass_by_name($name, $meta)> |
be7677c7 |
946 | |
127d39a7 |
947 | This will store a metaclass in the cache at the supplied C<$key>. |
948 | |
828ecf13 |
949 | =item B<Class::MOP::weaken_metaclass($name)> |
be7677c7 |
950 | |
6c842677 |
951 | In rare cases (e.g. anonymous metaclasses) it is desirable to |
952 | store a weakened reference in the metaclass cache. This |
953 | function will weaken the reference to the metaclass stored |
954 | in C<$name>. |
127d39a7 |
955 | |
828ecf13 |
956 | =item B<Class::MOP::does_metaclass_exist($name)> |
be7677c7 |
957 | |
828ecf13 |
958 | This will return true of there exists a metaclass stored in the |
6c842677 |
959 | C<$name> key, and return false otherwise. |
127d39a7 |
960 | |
828ecf13 |
961 | =item B<Class::MOP::remove_metaclass_by_name($name)> |
be7677c7 |
962 | |
6c842677 |
963 | This will remove the metaclass stored in the C<$name> key. |
127d39a7 |
964 | |
be7677c7 |
965 | =back |
966 | |
552e3d24 |
967 | =head1 SEE ALSO |
8b978dd5 |
968 | |
552e3d24 |
969 | =head2 Books |
8b978dd5 |
970 | |
1d68af04 |
971 | There are very few books out on Meta Object Protocols and Metaclasses |
972 | because it is such an esoteric topic. The following books are really |
973 | the only ones I have found. If you know of any more, B<I<please>> |
a2e85e6c |
974 | email me and let me know, I would love to hear about them. |
975 | |
8b978dd5 |
976 | =over 4 |
977 | |
15ab5451 |
978 | =item I<The Art of the Meta Object Protocol> |
8b978dd5 |
979 | |
15ab5451 |
980 | =item I<Advances in Object-Oriented Metalevel Architecture and Reflection> |
8b978dd5 |
981 | |
15ab5451 |
982 | =item I<Putting MetaClasses to Work> |
b51af7f9 |
983 | |
15ab5451 |
984 | =item I<Smalltalk: The Language> |
a2e85e6c |
985 | |
94b19069 |
986 | =back |
987 | |
550d56db |
988 | =head2 Papers |
989 | |
990 | =over 4 |
991 | |
15ab5451 |
992 | =item "Uniform and safe metaclass composition" |
550d56db |
993 | |
1d68af04 |
994 | An excellent paper by the people who brought us the original Traits paper. |
995 | This paper is on how Traits can be used to do safe metaclass composition, |
996 | and offers an excellent introduction section which delves into the topic of |
550d56db |
997 | metaclass compatibility. |
998 | |
999 | L<http://www.iam.unibe.ch/~scg/Archive/Papers/Duca05ySafeMetaclassTrait.pdf> |
1000 | |
15ab5451 |
1001 | =item "Safe Metaclass Programming" |
550d56db |
1002 | |
1d68af04 |
1003 | This paper seems to precede the above paper, and propose a mix-in based |
1004 | approach as opposed to the Traits based approach. Both papers have similar |
1005 | information on the metaclass compatibility problem space. |
550d56db |
1006 | |
1007 | L<http://citeseer.ist.psu.edu/37617.html> |
1008 | |
1009 | =back |
1010 | |
552e3d24 |
1011 | =head2 Prior Art |
8b978dd5 |
1012 | |
1013 | =over 4 |
1014 | |
7184ca14 |
1015 | =item The Perl 6 MetaModel work in the Pugs project |
8b978dd5 |
1016 | |
1017 | =over 4 |
1018 | |
552e3d24 |
1019 | =item L<http://svn.openfoundry.org/pugs/perl5/Perl6-MetaModel> |
8b978dd5 |
1020 | |
552e3d24 |
1021 | =item L<http://svn.openfoundry.org/pugs/perl5/Perl6-ObjectSpace> |
8b978dd5 |
1022 | |
1023 | =back |
1024 | |
94b19069 |
1025 | =back |
1026 | |
1d68af04 |
1027 | =head2 Articles |
f8dfcfb7 |
1028 | |
1029 | =over 4 |
1030 | |
1d68af04 |
1031 | =item CPAN Module Review of Class::MOP |
f8dfcfb7 |
1032 | |
1033 | L<http://www.oreillynet.com/onlamp/blog/2006/06/cpan_module_review_classmop.html> |
1034 | |
1035 | =back |
1036 | |
a2e85e6c |
1037 | =head1 SIMILAR MODULES |
1038 | |
1d68af04 |
1039 | As I have said above, this module is a class-builder-builder, so it is |
1040 | not the same thing as modules like L<Class::Accessor> and |
1041 | L<Class::MethodMaker>. That being said there are very few modules on CPAN |
1042 | with similar goals to this module. The one I have found which is most |
1043 | like this module is L<Class::Meta>, although it's philosophy and the MOP it |
1044 | creates are very different from this modules. |
94b19069 |
1045 | |
a2e85e6c |
1046 | =head1 BUGS |
1047 | |
1d68af04 |
1048 | All complex software has bugs lurking in it, and this module is no |
a2e85e6c |
1049 | exception. If you find a bug please either email me, or add the bug |
1050 | to cpan-RT. |
1051 | |
1052 | =head1 ACKNOWLEDGEMENTS |
1053 | |
1054 | =over 4 |
1055 | |
b9d9fc0b |
1056 | =item Rob Kinyon |
a2e85e6c |
1057 | |
1d68af04 |
1058 | Thanks to Rob for actually getting the development of this module kick-started. |
a2e85e6c |
1059 | |
1060 | =back |
1061 | |
1a09d9cc |
1062 | =head1 AUTHORS |
94b19069 |
1063 | |
a2e85e6c |
1064 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
552e3d24 |
1065 | |
9c8cda90 |
1066 | B<with contributions from:> |
1067 | |
1068 | Brandon (blblack) Black |
1069 | |
4f116037 |
1070 | Florian (rafl) Ragwitz |
1071 | |
9c8cda90 |
1072 | Guillermo (groditi) Roditi |
1073 | |
9195ddff |
1074 | Matt (mst) Trout |
1075 | |
9c8cda90 |
1076 | Rob (robkinyon) Kinyon |
1077 | |
1078 | Yuval (nothingmuch) Kogman |
1a09d9cc |
1079 | |
f430cfa4 |
1080 | Scott (konobi) McWhirter |
1081 | |
94b19069 |
1082 | =head1 COPYRIGHT AND LICENSE |
1083 | |
070bb6c9 |
1084 | Copyright 2006-2009 by Infinity Interactive, Inc. |
94b19069 |
1085 | |
1086 | L<http://www.iinteractive.com> |
1087 | |
1088 | This library is free software; you can redistribute it and/or modify |
1d68af04 |
1089 | it under the same terms as Perl itself. |
94b19069 |
1090 | |
1091 | =cut |