Commit | Line | Data |
fcd84ca9 |
1 | |
2 | package Moose; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
2cea2af7 |
7 | our $VERSION = '0.18_002'; |
fcd84ca9 |
8 | |
cc65ead0 |
9 | use Scalar::Util 'blessed', 'reftype'; |
fcd84ca9 |
10 | use Carp 'confess'; |
bc1e29b5 |
11 | use Sub::Name 'subname'; |
31f8ec72 |
12 | use B 'svref_2object'; |
fcd84ca9 |
13 | |
2d562421 |
14 | use Sub::Exporter; |
7f18097c |
15 | |
ef1d5f4b |
16 | use Class::MOP; |
17 | |
c0e30cf5 |
18 | use Moose::Meta::Class; |
7415b2cb |
19 | use Moose::Meta::TypeConstraint; |
7c13858b |
20 | use Moose::Meta::TypeCoercion; |
78cd1d3b |
21 | use Moose::Meta::Attribute; |
ddd0ec20 |
22 | use Moose::Meta::Instance; |
c0e30cf5 |
23 | |
fcd84ca9 |
24 | use Moose::Object; |
7415b2cb |
25 | use Moose::Util::TypeConstraints; |
a15dff8d |
26 | |
a3c7e2fe |
27 | { |
be33e4f3 |
28 | my $CALLER; |
a3c7e2fe |
29 | |
be33e4f3 |
30 | sub _init_meta { |
a3c7e2fe |
31 | my $class = $CALLER; |
32 | |
a3c7e2fe |
33 | # make a subtype for each Moose class |
34 | subtype $class |
35 | => as 'Object' |
36 | => where { $_->isa($class) } |
8ecb1fa0 |
37 | => optimize_as { blessed($_[0]) && $_[0]->isa($class) } |
a3c7e2fe |
38 | unless find_type_constraint($class); |
39 | |
40 | my $meta; |
41 | if ($class->can('meta')) { |
fcec2383 |
42 | # NOTE: |
43 | # this is the case where the metaclass pragma |
44 | # was used before the 'use Moose' statement to |
45 | # override a specific class |
a3c7e2fe |
46 | $meta = $class->meta(); |
47 | (blessed($meta) && $meta->isa('Moose::Meta::Class')) |
66bcefc1 |
48 | || confess "You already have a &meta function, but it does not return a Moose::Meta::Class"; |
a3c7e2fe |
49 | } |
50 | else { |
fcec2383 |
51 | # NOTE: |
52 | # this is broken currently, we actually need |
53 | # to allow the possiblity of an inherited |
54 | # meta, which will not be visible until the |
55 | # user 'extends' first. This needs to have |
56 | # more intelligence to it |
590868a3 |
57 | $meta = Moose::Meta::Class->initialize($class); |
a3c7e2fe |
58 | $meta->add_method('meta' => sub { |
59 | # re-initialize so it inherits properly |
fcb7afc2 |
60 | Moose::Meta::Class->initialize(blessed($_[0]) || $_[0]); |
a3c7e2fe |
61 | }) |
62 | } |
63 | |
64 | # make sure they inherit from Moose::Object |
65 | $meta->superclasses('Moose::Object') |
66 | unless $meta->superclasses(); |
a3c7e2fe |
67 | } |
68 | |
69 | my %exports = ( |
70 | extends => sub { |
be33e4f3 |
71 | my $class = $CALLER; |
68117c45 |
72 | return subname 'Moose::extends' => sub (@) { |
73 | confess "Must derive at least one class" unless @_; |
a3c7e2fe |
74 | _load_all_classes(@_); |
1341f10c |
75 | # this checks the metaclass to make sure |
76 | # it is correct, sometimes it can get out |
77 | # of sync when the classes are being built |
78 | my $meta = $class->meta->_fix_metaclass_incompatability(@_); |
be33e4f3 |
79 | $meta->superclasses(@_); |
a3c7e2fe |
80 | }; |
81 | }, |
82 | with => sub { |
be33e4f3 |
83 | my $class = $CALLER; |
68117c45 |
84 | return subname 'Moose::with' => sub (@) { |
db1ab48d |
85 | my (@roles) = @_; |
68117c45 |
86 | confess "Must specify at least one role" unless @roles; |
db1ab48d |
87 | _load_all_classes(@roles); |
1341f10c |
88 | $class->meta->_apply_all_roles(@roles); |
a3c7e2fe |
89 | }; |
90 | }, |
91 | has => sub { |
be33e4f3 |
92 | my $class = $CALLER; |
2c0cbef7 |
93 | return subname 'Moose::has' => sub ($;%) { |
452bac1b |
94 | my ($name, %options) = @_; |
1341f10c |
95 | $class->meta->_process_attribute($name, %options); |
a3c7e2fe |
96 | }; |
97 | }, |
98 | before => sub { |
be33e4f3 |
99 | my $class = $CALLER; |
2c0cbef7 |
100 | return subname 'Moose::before' => sub (@&) { |
a3c7e2fe |
101 | my $code = pop @_; |
be33e4f3 |
102 | my $meta = $class->meta; |
a3c7e2fe |
103 | $meta->add_before_method_modifier($_, $code) for @_; |
104 | }; |
105 | }, |
106 | after => sub { |
be33e4f3 |
107 | my $class = $CALLER; |
2c0cbef7 |
108 | return subname 'Moose::after' => sub (@&) { |
a3c7e2fe |
109 | my $code = pop @_; |
be33e4f3 |
110 | my $meta = $class->meta; |
a3c7e2fe |
111 | $meta->add_after_method_modifier($_, $code) for @_; |
112 | }; |
113 | }, |
114 | around => sub { |
be33e4f3 |
115 | my $class = $CALLER; |
2c0cbef7 |
116 | return subname 'Moose::around' => sub (@&) { |
a3c7e2fe |
117 | my $code = pop @_; |
be33e4f3 |
118 | my $meta = $class->meta; |
a3c7e2fe |
119 | $meta->add_around_method_modifier($_, $code) for @_; |
120 | }; |
121 | }, |
122 | super => sub { |
3d544ed5 |
123 | return subname 'Moose::super' => sub {}; |
a3c7e2fe |
124 | }, |
125 | override => sub { |
be33e4f3 |
126 | my $class = $CALLER; |
2c0cbef7 |
127 | return subname 'Moose::override' => sub ($&) { |
a3c7e2fe |
128 | my ($name, $method) = @_; |
be33e4f3 |
129 | $class->meta->add_override_method_modifier($name => $method); |
a3c7e2fe |
130 | }; |
131 | }, |
132 | inner => sub { |
3d544ed5 |
133 | return subname 'Moose::inner' => sub {}; |
a3c7e2fe |
134 | }, |
135 | augment => sub { |
be33e4f3 |
136 | my $class = $CALLER; |
2c0cbef7 |
137 | return subname 'Moose::augment' => sub (@&) { |
a3c7e2fe |
138 | my ($name, $method) = @_; |
be33e4f3 |
139 | $class->meta->add_augment_method_modifier($name => $method); |
a3c7e2fe |
140 | }; |
141 | }, |
3279ab4a |
142 | |
68efb014 |
143 | # NOTE: |
2a0f3bd3 |
144 | # this is experimental, but I am not |
145 | # happy with it. If you want to try |
146 | # it, you will have to uncomment it |
147 | # yourself. |
148 | # There is a really good chance that |
149 | # this will be deprecated, dont get |
150 | # too attached |
151 | # self => sub { |
152 | # return subname 'Moose::self' => sub {}; |
153 | # }, |
154 | # method => sub { |
155 | # my $class = $CALLER; |
156 | # return subname 'Moose::method' => sub { |
157 | # my ($name, $method) = @_; |
158 | # $class->meta->add_method($name, sub { |
159 | # my $self = shift; |
160 | # no strict 'refs'; |
161 | # no warnings 'redefine'; |
162 | # local *{$class->meta->name . '::self'} = sub { $self }; |
163 | # $method->(@_); |
164 | # }); |
165 | # }; |
166 | # }, |
3279ab4a |
167 | |
a3c7e2fe |
168 | confess => sub { |
169 | return \&Carp::confess; |
170 | }, |
171 | blessed => sub { |
172 | return \&Scalar::Util::blessed; |
66bcefc1 |
173 | }, |
a3c7e2fe |
174 | ); |
3d544ed5 |
175 | |
a3c7e2fe |
176 | my $exporter = Sub::Exporter::build_exporter({ |
177 | exports => \%exports, |
178 | groups => { |
179 | default => [':all'] |
180 | } |
181 | }); |
182 | |
fcb7afc2 |
183 | sub import { |
a3c7e2fe |
184 | $CALLER = caller(); |
c235cd98 |
185 | |
186 | strict->import; |
187 | warnings->import; |
a3c7e2fe |
188 | |
189 | # we should never export to main |
190 | return if $CALLER eq 'main'; |
be33e4f3 |
191 | |
192 | _init_meta(); |
9eacbf7c |
193 | |
a3c7e2fe |
194 | goto $exporter; |
fcb7afc2 |
195 | } |
31f8ec72 |
196 | |
197 | sub unimport { |
198 | no strict 'refs'; |
199 | my $class = caller(); |
200 | # loop through the exports ... |
201 | foreach my $name (keys %exports) { |
3279ab4a |
202 | next if $name =~ /inner|super|self/; |
31f8ec72 |
203 | |
204 | # if we find one ... |
205 | if (defined &{$class . '::' . $name}) { |
206 | my $keyword = \&{$class . '::' . $name}; |
207 | |
208 | # make sure it is from Moose |
209 | my $pkg_name = eval { svref_2object($keyword)->GV->STASH->NAME }; |
210 | next if $@; |
211 | next if $pkg_name ne 'Moose'; |
212 | |
213 | # and if it is from Moose then undef the slot |
214 | delete ${$class . '::'}{$name}; |
215 | } |
216 | } |
217 | } |
5cf3dbcf |
218 | |
219 | |
fcd84ca9 |
220 | } |
221 | |
e9bb8a31 |
222 | ## Utility functions |
223 | |
78cd1d3b |
224 | sub _load_all_classes { |
f90dc7ee |
225 | foreach my $class (@_) { |
e9bb8a31 |
226 | # see if this is already |
227 | # loaded in the symbol table |
f90dc7ee |
228 | next if _is_class_already_loaded($class); |
e9bb8a31 |
229 | # otherwise require it ... |
3c2bc5e2 |
230 | my $file = $class . '.pm'; |
231 | $file =~ s{::}{/}g; |
232 | eval { CORE::require($file) }; |
233 | confess( |
f90dc7ee |
234 | "Could not load module '$class' because : $@" |
3c2bc5e2 |
235 | ) if $@; |
236 | } |
e9bb8a31 |
237 | } |
238 | |
d7f17ebb |
239 | sub _is_class_already_loaded { |
240 | my $name = shift; |
241 | no strict 'refs'; |
242 | return 1 if defined ${"${name}::VERSION"} || defined @{"${name}::ISA"}; |
243 | foreach (keys %{"${name}::"}) { |
244 | next if substr($_, -2, 2) eq '::'; |
245 | return 1 if defined &{"${name}::$_"}; |
246 | } |
3c2bc5e2 |
247 | return 0; |
d7f17ebb |
248 | } |
249 | |
8ecb1fa0 |
250 | ## make 'em all immutable |
251 | |
252 | $_->meta->make_immutable( |
253 | inline_constructor => 0, |
254 | inline_accessors => 0, |
255 | ) for ( |
256 | 'Moose::Meta::Attribute', |
257 | 'Moose::Meta::Class', |
258 | 'Moose::Meta::Instance', |
259 | |
260 | 'Moose::Meta::TypeConstraint', |
261 | 'Moose::Meta::TypeConstraint::Union', |
262 | 'Moose::Meta::TypeCoercion', |
263 | |
264 | 'Moose::Meta::Method', |
265 | 'Moose::Meta::Method::Accessor', |
266 | 'Moose::Meta::Method::Constructor', |
267 | 'Moose::Meta::Method::Overriden', |
268 | ); |
269 | |
fcd84ca9 |
270 | 1; |
271 | |
272 | __END__ |
273 | |
274 | =pod |
275 | |
276 | =head1 NAME |
277 | |
31f8ec72 |
278 | Moose - A complete modern object system for Perl 5 |
fcd84ca9 |
279 | |
280 | =head1 SYNOPSIS |
e522431d |
281 | |
282 | package Point; |
43d599e5 |
283 | use strict; |
284 | use warnings; |
e522431d |
285 | use Moose; |
286 | |
43d599e5 |
287 | has 'x' => (is => 'rw', isa => 'Int'); |
288 | has 'y' => (is => 'rw', isa => 'Int'); |
e522431d |
289 | |
290 | sub clear { |
291 | my $self = shift; |
292 | $self->x(0); |
293 | $self->y(0); |
294 | } |
295 | |
296 | package Point3D; |
43d599e5 |
297 | use strict; |
298 | use warnings; |
e522431d |
299 | use Moose; |
300 | |
301 | extends 'Point'; |
09fdc1dc |
302 | |
43d599e5 |
303 | has 'z' => (is => 'rw', isa => 'Int'); |
e522431d |
304 | |
305 | after 'clear' => sub { |
306 | my $self = shift; |
43d599e5 |
307 | $self->z(0); |
e522431d |
308 | }; |
309 | |
310 | =head1 CAVEAT |
311 | |
2c0cbef7 |
312 | Moose is a rapidly maturing module, and is already being used by |
313 | a number of people. It's test suite is growing larger by the day, |
314 | and the docs should soon follow. |
315 | |
316 | This said, Moose is not yet finished, and should still be considered |
317 | to be evolving. Much of the outer API is stable, but the internals |
318 | are still subject to change (although not without serious thought |
319 | given to it). |
320 | |
fcd84ca9 |
321 | =head1 DESCRIPTION |
322 | |
e522431d |
323 | Moose is an extension of the Perl 5 object system. |
324 | |
325 | =head2 Another object system!?!? |
fcd84ca9 |
326 | |
e522431d |
327 | Yes, I know there has been an explosion recently of new ways to |
68efb014 |
328 | build object's in Perl 5, most of them based on inside-out objects |
e522431d |
329 | and other such things. Moose is different because it is not a new |
330 | object system for Perl 5, but instead an extension of the existing |
331 | object system. |
3c7278fb |
332 | |
e522431d |
333 | Moose is built on top of L<Class::MOP>, which is a metaclass system |
334 | for Perl 5. This means that Moose not only makes building normal |
505c6fac |
335 | Perl 5 objects better, but it also provides the power of metaclass |
336 | programming. |
e522431d |
337 | |
2c0cbef7 |
338 | =head2 Can I use this in production? Or is this just an experiment? |
e522431d |
339 | |
2c0cbef7 |
340 | Moose is I<based> on the prototypes and experiments I did for the Perl 6 |
68efb014 |
341 | meta-model; however Moose is B<NOT> an experiment/prototype, it is |
43d599e5 |
342 | for B<real>. I will be deploying Moose into production environments later |
68efb014 |
343 | this year, and I have every intentions of using it as my de facto class |
344 | builder from now on. |
e522431d |
345 | |
43d599e5 |
346 | =head2 Is Moose just Perl 6 in Perl 5? |
e522431d |
347 | |
68efb014 |
348 | No. While Moose is very much inspired by Perl 6, it is not itself Perl 6. |
349 | Instead, it is an OO system for Perl 5. I built Moose because I was tired or |
350 | writing the same old boring Perl 5 OO code, and drooling over Perl 6 OO. So |
351 | instead of switching to Ruby, I wrote Moose :) |
3c7278fb |
352 | |
6ba6d68c |
353 | =head1 BUILDING CLASSES WITH MOOSE |
354 | |
68efb014 |
355 | Moose makes every attempt to provide as much convenience as possible during |
356 | class construction/definition, but still stay out of your way if you want it |
357 | to. Here are a few items to note when building classes with Moose. |
6ba6d68c |
358 | |
359 | Unless specified with C<extends>, any class which uses Moose will |
360 | inherit from L<Moose::Object>. |
361 | |
362 | Moose will also manage all attributes (including inherited ones) that |
68efb014 |
363 | are defined with C<has>. And assuming that you call C<new>, which is |
6ba6d68c |
364 | inherited from L<Moose::Object>, then this includes properly initializing |
68efb014 |
365 | all instance slots, setting defaults where appropriate, and performing any |
6ba6d68c |
366 | type constraint checking or coercion. |
367 | |
368 | =head1 EXPORTED FUNCTIONS |
369 | |
68efb014 |
370 | Moose will export a number of functions into the class's namespace which |
6ba6d68c |
371 | can then be used to set up the class. These functions all work directly |
372 | on the current class. |
373 | |
374 | =over 4 |
375 | |
376 | =item B<meta> |
377 | |
378 | This is a method which provides access to the current class's metaclass. |
379 | |
380 | =item B<extends (@superclasses)> |
381 | |
382 | This function will set the superclass(es) for the current class. |
383 | |
384 | This approach is recommended instead of C<use base>, because C<use base> |
385 | actually C<push>es onto the class's C<@ISA>, whereas C<extends> will |
386 | replace it. This is important to ensure that classes which do not have |
68efb014 |
387 | superclasses still properly inherit from L<Moose::Object>. |
6ba6d68c |
388 | |
43d599e5 |
389 | =item B<with (@roles)> |
e9ec68d6 |
390 | |
43d599e5 |
391 | This will apply a given set of C<@roles> to the local class. Role support |
68efb014 |
392 | is currently under heavy development; see L<Moose::Role> for more details. |
e9ec68d6 |
393 | |
6ba6d68c |
394 | =item B<has ($name, %options)> |
395 | |
396 | This will install an attribute of a given C<$name> into the current class. |
43d599e5 |
397 | The list of C<%options> are the same as those provided by |
398 | L<Class::MOP::Attribute>, in addition to the list below which are provided |
399 | by Moose (L<Moose::Meta::Attribute> to be more specific): |
6ba6d68c |
400 | |
401 | =over 4 |
402 | |
076c81ed |
403 | =item I<is =E<gt> 'rw'|'ro'> |
6ba6d68c |
404 | |
405 | The I<is> option accepts either I<rw> (for read/write) or I<ro> (for read |
406 | only). These will create either a read/write accessor or a read-only |
407 | accessor respectively, using the same name as the C<$name> of the attribute. |
408 | |
409 | If you need more control over how your accessors are named, you can use the |
43d599e5 |
410 | I<reader>, I<writer> and I<accessor> options inherited from L<Class::MOP::Attribute>. |
6ba6d68c |
411 | |
076c81ed |
412 | =item I<isa =E<gt> $type_name> |
6ba6d68c |
413 | |
414 | The I<isa> option uses Moose's type constraint facilities to set up runtime |
415 | type checking for this attribute. Moose will perform the checks during class |
416 | construction, and within any accessors. The C<$type_name> argument must be a |
68efb014 |
417 | string. The string can be either a class name or a type defined using |
418 | Moose's type definition features. |
6ba6d68c |
419 | |
daea75c9 |
420 | =item I<coerce =E<gt> (1|0)> |
421 | |
422 | This will attempt to use coercion with the supplied type constraint to change |
68efb014 |
423 | the value passed into any accessors or constructors. You B<must> have supplied |
daea75c9 |
424 | a type constraint in order for this to work. See L<Moose::Cookbook::Recipe5> |
425 | for an example usage. |
426 | |
427 | =item I<does =E<gt> $role_name> |
428 | |
429 | This will accept the name of a role which the value stored in this attribute |
430 | is expected to have consumed. |
431 | |
432 | =item I<required =E<gt> (1|0)> |
433 | |
434 | This marks the attribute as being required. This means a value must be supplied |
435 | during class construction, and the attribute can never be set to C<undef> with |
436 | an accessor. |
437 | |
438 | =item I<weak_ref =E<gt> (1|0)> |
439 | |
68efb014 |
440 | This will tell the class to store the value of this attribute as a weakened |
441 | reference. If an attribute is a weakened reference, it B<cannot> also be |
442 | coerced. |
daea75c9 |
443 | |
444 | =item I<lazy =E<gt> (1|0)> |
445 | |
68efb014 |
446 | This will tell the class to not create this slot until absolutely necessary. |
daea75c9 |
447 | If an attribute is marked as lazy it B<must> have a default supplied. |
448 | |
9e93dd19 |
449 | =item I<auto_deref =E<gt> (1|0)> |
450 | |
68efb014 |
451 | This tells the accessor whether to automatically dereference the value returned. |
9e93dd19 |
452 | This is only legal if your C<isa> option is either an C<ArrayRef> or C<HashRef>. |
453 | |
daea75c9 |
454 | =item I<trigger =E<gt> $code> |
455 | |
456 | The trigger option is a CODE reference which will be called after the value of |
457 | the attribute is set. The CODE ref will be passed the instance itself, the |
458 | updated value and the attribute meta-object (this is for more advanced fiddling |
68efb014 |
459 | and can typically be ignored in most cases). You B<cannot> have a trigger on |
cce8198b |
460 | a read-only attribute. |
daea75c9 |
461 | |
2c0cbef7 |
462 | =item I<handles =E<gt> [ @handles ]> |
463 | |
464 | There is experimental support for attribute delegation using the C<handles> |
465 | option. More docs to come later. |
466 | |
6ba6d68c |
467 | =back |
468 | |
076c81ed |
469 | =item B<before $name|@names =E<gt> sub { ... }> |
6ba6d68c |
470 | |
076c81ed |
471 | =item B<after $name|@names =E<gt> sub { ... }> |
6ba6d68c |
472 | |
076c81ed |
473 | =item B<around $name|@names =E<gt> sub { ... }> |
6ba6d68c |
474 | |
68efb014 |
475 | This three items are syntactic sugar for the before, after, and around method |
6ba6d68c |
476 | modifier features that L<Class::MOP> provides. More information on these can |
477 | be found in the L<Class::MOP> documentation for now. |
478 | |
159da176 |
479 | =item B<super> |
480 | |
68efb014 |
481 | The keyword C<super> is a no-op when called outside of an C<override> method. In |
159da176 |
482 | the context of an C<override> method, it will call the next most appropriate |
483 | superclass method with the same arguments as the original method. |
484 | |
485 | =item B<override ($name, &sub)> |
486 | |
68efb014 |
487 | An C<override> method is a way of explicitly saying "I am overriding this |
159da176 |
488 | method from my superclass". You can call C<super> within this method, and |
489 | it will work as expected. The same thing I<can> be accomplished with a normal |
68efb014 |
490 | method call and the C<SUPER::> pseudo-package; it is really your choice. |
159da176 |
491 | |
492 | =item B<inner> |
493 | |
494 | The keyword C<inner>, much like C<super>, is a no-op outside of the context of |
495 | an C<augment> method. You can think of C<inner> as being the inverse of |
68efb014 |
496 | C<super>; the details of how C<inner> and C<augment> work is best described in |
159da176 |
497 | the L<Moose::Cookbook>. |
498 | |
499 | =item B<augment ($name, &sub)> |
500 | |
68efb014 |
501 | An C<augment> method, is a way of explicitly saying "I am augmenting this |
159da176 |
502 | method from my superclass". Once again, the details of how C<inner> and |
503 | C<augment> work is best described in the L<Moose::Cookbook>. |
504 | |
6ba6d68c |
505 | =item B<confess> |
506 | |
68efb014 |
507 | This is the C<Carp::confess> function, and exported here because I use it |
6ba6d68c |
508 | all the time. This feature may change in the future, so you have been warned. |
509 | |
510 | =item B<blessed> |
511 | |
68efb014 |
512 | This is the C<Scalar::Uti::blessed> function, it is exported here because I |
6ba6d68c |
513 | use it all the time. It is highly recommended that this is used instead of |
514 | C<ref> anywhere you need to test for an object's class name. |
515 | |
516 | =back |
517 | |
31f8ec72 |
518 | =head1 UNEXPORTING FUNCTIONS |
519 | |
520 | =head2 B<unimport> |
521 | |
522 | Moose offers a way of removing the keywords it exports though the C<unimport> |
523 | method. You simply have to say C<no Moose> at the bottom of your code for this |
524 | to work. Here is an example: |
525 | |
526 | package Person; |
527 | use Moose; |
528 | |
529 | has 'first_name' => (is => 'rw', isa => 'Str'); |
530 | has 'last_name' => (is => 'rw', isa => 'Str'); |
531 | |
532 | sub full_name { |
533 | my $self = shift; |
534 | $self->first_name . ' ' . $self->last_name |
535 | } |
536 | |
537 | no Moose; # keywords are removed from the Person package |
538 | |
2c0cbef7 |
539 | =head1 MISC. |
540 | |
541 | =head2 What does Moose stand for?? |
542 | |
543 | Moose doesn't stand for one thing in particular, however, if you |
68efb014 |
544 | want, here are a few of my favorites; feel free to contribute |
2c0cbef7 |
545 | more :) |
546 | |
547 | =over 4 |
548 | |
549 | =item Make Other Object Systems Envious |
550 | |
551 | =item Makes Object Orientation So Easy |
552 | |
553 | =item Makes Object Orientation Spiffy- Er (sorry ingy) |
554 | |
555 | =item Most Other Object Systems Emasculate |
556 | |
2c0cbef7 |
557 | =item Moose Often Ovulate Sorta Early |
558 | |
2c0cbef7 |
559 | =item Moose Offers Often Super Extensions |
560 | |
561 | =item Meta Object Orientation Syntax Extensions |
562 | |
563 | =back |
564 | |
05d9eaf6 |
565 | =head1 CAVEATS |
566 | |
567 | =over 4 |
568 | |
569 | =item * |
570 | |
68efb014 |
571 | It should be noted that C<super> and C<inner> C<cannot> be used in the same |
572 | method. However, they can be combined together with the same class hierarchy; |
05d9eaf6 |
573 | see F<t/014_override_augment_inner_super.t> for an example. |
574 | |
68efb014 |
575 | The reason for this is that C<super> is only valid within a method |
05d9eaf6 |
576 | with the C<override> modifier, and C<inner> will never be valid within an |
577 | C<override> method. In fact, C<augment> will skip over any C<override> methods |
68efb014 |
578 | when searching for its appropriate C<inner>. |
05d9eaf6 |
579 | |
580 | This might seem like a restriction, but I am of the opinion that keeping these |
68efb014 |
581 | two features separate (but interoperable) actually makes them easy to use, since |
05d9eaf6 |
582 | their behavior is then easier to predict. Time will tell if I am right or not. |
583 | |
584 | =back |
585 | |
5569c072 |
586 | =head1 ACKNOWLEDGEMENTS |
587 | |
588 | =over 4 |
589 | |
54c189df |
590 | =item I blame Sam Vilain for introducing me to the insanity that is meta-models. |
5569c072 |
591 | |
54c189df |
592 | =item I blame Audrey Tang for then encouraging my meta-model habit in #perl6. |
5569c072 |
593 | |
076c81ed |
594 | =item Without Yuval "nothingmuch" Kogman this module would not be possible, |
54c189df |
595 | and it certainly wouldn't have this name ;P |
5569c072 |
596 | |
597 | =item The basis of the TypeContraints module was Rob Kinyon's idea |
598 | originally, I just ran with it. |
599 | |
076c81ed |
600 | =item Thanks to mst & chansen and the whole #moose poose for all the |
d46a48f3 |
601 | ideas/feature-requests/encouragement |
602 | |
68efb014 |
603 | =item Thanks to David "Theory" Wheeler for meta-discussions and spelling fixes. |
604 | |
5569c072 |
605 | =back |
606 | |
e90c03d0 |
607 | =head1 SEE ALSO |
608 | |
609 | =over 4 |
610 | |
6ba6d68c |
611 | =item L<Class::MOP> documentation |
612 | |
613 | =item The #moose channel on irc.perl.org |
614 | |
e67a0fca |
615 | =item The Moose mailing list - moose@perl.org |
616 | |
e90c03d0 |
617 | =item L<http://forum2.org/moose/> |
618 | |
159da176 |
619 | =item L<http://www.cs.utah.edu/plt/publications/oopsla04-gff.pdf> |
620 | |
621 | This paper (suggested by lbr on #moose) was what lead to the implementation |
622 | of the C<super>/C<overrride> and C<inner>/C<augment> features. If you really |
623 | want to understand this feature, I suggest you read this. |
624 | |
e90c03d0 |
625 | =back |
626 | |
fcd84ca9 |
627 | =head1 BUGS |
628 | |
629 | All complex software has bugs lurking in it, and this module is no |
630 | exception. If you find a bug please either email me, or add the bug |
631 | to cpan-RT. |
632 | |
fcd84ca9 |
633 | =head1 AUTHOR |
634 | |
635 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
636 | |
db1ab48d |
637 | Christian Hansen E<lt>chansen@cpan.orgE<gt> |
638 | |
639 | Yuval Kogman E<lt>nothingmuch@woobling.orgE<gt> |
98aae381 |
640 | |
fcd84ca9 |
641 | =head1 COPYRIGHT AND LICENSE |
642 | |
643 | Copyright 2006 by Infinity Interactive, Inc. |
644 | |
645 | L<http://www.iinteractive.com> |
646 | |
647 | This library is free software; you can redistribute it and/or modify |
648 | it under the same terms as Perl itself. |
649 | |
ddd0ec20 |
650 | =cut |