Commit | Line | Data |
9a641848 |
1 | package Moose::Util; |
2 | |
9a641848 |
3 | use strict; |
4 | use warnings; |
5 | |
c01f48b7 |
6 | use Data::OptList; |
88e88a7b |
7 | use Params::Util qw( _STRING ); |
7125b244 |
8 | use Sub::Exporter; |
d7d8a8c7 |
9 | use Scalar::Util 'blessed'; |
d2782813 |
10 | use List::Util qw(first); |
11 | use List::MoreUtils qw(any all); |
5394a1c7 |
12 | use overload (); |
094b6ec9 |
13 | use Try::Tiny; |
38bf2a25 |
14 | use Class::MOP; |
9a641848 |
15 | |
7125b244 |
16 | my @exports = qw[ |
d03bd989 |
17 | find_meta |
6532ca5a |
18 | does_role |
d03bd989 |
19 | search_class_by_role |
b099a649 |
20 | ensure_all_roles |
d7d8a8c7 |
21 | apply_all_roles |
d26f5671 |
22 | with_traits |
ab76842e |
23 | get_all_init_args |
24 | get_all_attribute_values |
a5e883ae |
25 | resolve_metatrait_alias |
26 | resolve_metaclass_alias |
5f71050b |
27 | add_method_modifier |
d939e016 |
28 | english_list |
27f2f43f |
29 | meta_attribute_alias |
30 | meta_class_alias |
7125b244 |
31 | ]; |
9a641848 |
32 | |
7125b244 |
33 | Sub::Exporter::setup_exporter({ |
34 | exports => \@exports, |
11065d1f |
35 | groups => { all => \@exports } |
7125b244 |
36 | }); |
37 | |
38 | ## some utils for the utils ... |
39 | |
56ea1a11 |
40 | sub find_meta { Class::MOP::class_of(@_) } |
9a641848 |
41 | |
7125b244 |
42 | ## the functions ... |
adf82331 |
43 | |
7125b244 |
44 | sub does_role { |
45 | my ($class_or_obj, $role) = @_; |
adf82331 |
46 | |
094b6ec9 |
47 | if (try { $class_or_obj->can('does') }) { |
48 | return $class_or_obj->does($role); |
49 | } |
50 | |
6532ca5a |
51 | my $meta = find_meta($class_or_obj); |
d03bd989 |
52 | |
7125b244 |
53 | return unless defined $meta; |
10a745f5 |
54 | return unless $meta->can('does_role'); |
7125b244 |
55 | return 1 if $meta->does_role($role); |
56 | return; |
9a641848 |
57 | } |
58 | |
1631b53f |
59 | sub search_class_by_role { |
560c498d |
60 | my ($class_or_obj, $role) = @_; |
d03bd989 |
61 | |
6532ca5a |
62 | my $meta = find_meta($class_or_obj); |
7125b244 |
63 | |
64 | return unless defined $meta; |
65 | |
560c498d |
66 | my $role_name = blessed $role ? $role->name : $role; |
67 | |
7125b244 |
68 | foreach my $class ($meta->class_precedence_list) { |
d03bd989 |
69 | |
70 | my $_meta = find_meta($class); |
1631b53f |
71 | |
7125b244 |
72 | next unless defined $_meta; |
73 | |
74 | foreach my $role (@{ $_meta->roles || [] }) { |
1631b53f |
75 | return $class if $role->name eq $role_name; |
76 | } |
77 | } |
78 | |
7125b244 |
79 | return; |
1631b53f |
80 | } |
81 | |
b099a649 |
82 | # this can possibly behave in unexpected ways because the roles being composed |
83 | # before being applied could differ from call to call; I'm not sure if or how |
84 | # to document this possible quirk. |
85 | sub ensure_all_roles { |
86 | my $applicant = shift; |
87 | _apply_all_roles($applicant, sub { !does_role($applicant, $_) }, @_); |
88 | } |
89 | |
d7d8a8c7 |
90 | sub apply_all_roles { |
91 | my $applicant = shift; |
8d4d1cdc |
92 | _apply_all_roles($applicant, undef, @_); |
b099a649 |
93 | } |
94 | |
95 | sub _apply_all_roles { |
96 | my $applicant = shift; |
97 | my $role_filter = shift; |
e606ae5f |
98 | |
70ea9161 |
99 | unless (@_) { |
100 | require Moose; |
101 | Moose->throw_error("Must specify at least one role to apply to $applicant"); |
102 | } |
e606ae5f |
103 | |
8e590ae4 |
104 | # If @_ contains role meta objects, mkopt will think that they're values, |
105 | # because they're references. In other words (roleobj1, roleobj2, |
106 | # roleobj3) will become [ [ roleobj1, roleobj2 ], [ roleobj3, undef ] ] |
107 | # -- this is no good. We'll preprocess @_ first to eliminate the potential |
108 | # bug. |
109 | # -- rjbs, 2011-04-08 |
110 | my $roles = Data::OptList::mkopt( [@_], { |
111 | moniker => 'role', |
112 | name_test => sub { |
113 | ! ref $_[0] or blessed($_[0]) && $_[0]->isa('Moose::Meta::Role') |
114 | } |
115 | }); |
e606ae5f |
116 | |
560c498d |
117 | my @role_metas; |
70ea9161 |
118 | foreach my $role (@$roles) { |
560c498d |
119 | my $meta; |
120 | |
121 | if ( blessed $role->[0] ) { |
122 | $meta = $role->[0]; |
123 | } |
124 | else { |
2e7f6cf4 |
125 | Class::MOP::load_class( $role->[0] , $role->[1] ); |
eea9eb4d |
126 | $meta = find_meta( $role->[0] ); |
560c498d |
127 | } |
70ea9161 |
128 | |
c8d9f1e2 |
129 | unless ($meta && $meta->isa('Moose::Meta::Role') ) { |
70ea9161 |
130 | require Moose; |
131 | Moose->throw_error( "You can only consume roles, " |
132 | . $role->[0] |
133 | . " is not a Moose role" ); |
134 | } |
560c498d |
135 | |
136 | push @role_metas, [ $meta, $role->[1] ]; |
70ea9161 |
137 | } |
e606ae5f |
138 | |
82a24871 |
139 | if ( defined $role_filter ) { |
560c498d |
140 | @role_metas = grep { local $_ = $_->[0]; $role_filter->() } @role_metas; |
8d4d1cdc |
141 | } |
b099a649 |
142 | |
560c498d |
143 | return unless @role_metas; |
b099a649 |
144 | |
23360da2 |
145 | Class::MOP::load_class($applicant) |
146 | unless blessed($applicant) |
147 | || Class::MOP::class_of($applicant); |
148 | |
eea9eb4d |
149 | my $meta = ( blessed $applicant ? $applicant : Moose::Meta::Class->initialize($applicant) ); |
6fab0b75 |
150 | |
560c498d |
151 | if ( scalar @role_metas == 1 ) { |
152 | my ( $role, $params ) = @{ $role_metas[0] }; |
153 | $role->apply( $meta, ( defined $params ? %$params : () ) ); |
d7d8a8c7 |
154 | } |
155 | else { |
560c498d |
156 | Moose::Meta::Role->combine(@role_metas)->apply($meta); |
e606ae5f |
157 | } |
d7d8a8c7 |
158 | } |
159 | |
d26f5671 |
160 | sub with_traits { |
161 | my ($class, @roles) = @_; |
162 | return $class unless @roles; |
163 | return Moose::Meta::Class->create_anon_class( |
164 | superclasses => [$class], |
165 | roles => \@roles, |
166 | cache => 1, |
167 | )->name; |
168 | } |
169 | |
ab76842e |
170 | # instance deconstruction ... |
171 | |
172 | sub get_all_attribute_values { |
173 | my ($class, $instance) = @_; |
174 | return +{ |
175 | map { $_->name => $_->get_value($instance) } |
176 | grep { $_->has_value($instance) } |
b2df9268 |
177 | $class->get_all_attributes |
ab76842e |
178 | }; |
179 | } |
180 | |
181 | sub get_all_init_args { |
182 | my ($class, $instance) = @_; |
183 | return +{ |
184 | map { $_->init_arg => $_->get_value($instance) } |
185 | grep { $_->has_value($instance) } |
d03bd989 |
186 | grep { defined($_->init_arg) } |
b2df9268 |
187 | $class->get_all_attributes |
ab76842e |
188 | }; |
189 | } |
190 | |
50fbbf3d |
191 | sub resolve_metatrait_alias { |
50fbbf3d |
192 | return resolve_metaclass_alias( @_, trait => 1 ); |
a3738e5b |
193 | } |
194 | |
27f2f43f |
195 | sub _build_alias_package_name { |
196 | my ($type, $name, $trait) = @_; |
197 | return 'Moose::Meta::' |
198 | . $type |
199 | . '::Custom::' |
200 | . ( $trait ? 'Trait::' : '' ) |
201 | . $name; |
202 | } |
203 | |
50fbbf3d |
204 | { |
205 | my %cache; |
a3738e5b |
206 | |
50fbbf3d |
207 | sub resolve_metaclass_alias { |
208 | my ( $type, $metaclass_name, %options ) = @_; |
a3738e5b |
209 | |
50fbbf3d |
210 | my $cache_key = $type . q{ } . ( $options{trait} ? '-Trait' : '' ); |
211 | return $cache{$cache_key}{$metaclass_name} |
212 | if $cache{$cache_key}{$metaclass_name}; |
213 | |
27f2f43f |
214 | my $possible_full_name = _build_alias_package_name( |
215 | $type, $metaclass_name, $options{trait} |
216 | ); |
50fbbf3d |
217 | |
218 | my $loaded_class = Class::MOP::load_first_existing_class( |
219 | $possible_full_name, |
220 | $metaclass_name |
221 | ); |
222 | |
223 | return $cache{$cache_key}{$metaclass_name} |
224 | = $loaded_class->can('register_implementation') |
225 | ? $loaded_class->register_implementation |
226 | : $loaded_class; |
227 | } |
a3738e5b |
228 | } |
229 | |
5f71050b |
230 | sub add_method_modifier { |
231 | my ( $class_or_obj, $modifier_name, $args ) = @_; |
d5447d26 |
232 | my $meta |
233 | = $class_or_obj->can('add_before_method_modifier') |
234 | ? $class_or_obj |
235 | : find_meta($class_or_obj); |
5f71050b |
236 | my $code = pop @{$args}; |
237 | my $add_modifier_method = 'add_' . $modifier_name . '_method_modifier'; |
238 | if ( my $method_modifier_type = ref( @{$args}[0] ) ) { |
239 | if ( $method_modifier_type eq 'Regexp' ) { |
e606ae5f |
240 | my @all_methods = $meta->get_all_methods; |
5f71050b |
241 | my @matched_methods |
e606ae5f |
242 | = grep { $_->name =~ @{$args}[0] } @all_methods; |
243 | $meta->$add_modifier_method( $_->name, $code ) |
5f71050b |
244 | for @matched_methods; |
245 | } |
775666aa |
246 | elsif ($method_modifier_type eq 'ARRAY') { |
247 | $meta->$add_modifier_method( $_, $code ) for @{$args->[0]}; |
248 | } |
249 | else { |
250 | $meta->throw_error( |
251 | sprintf( |
252 | "Methods passed to %s must be provided as a list, arrayref or regex, not %s", |
253 | $modifier_name, |
254 | $method_modifier_type, |
255 | ) |
256 | ); |
257 | } |
5f71050b |
258 | } |
259 | else { |
260 | $meta->$add_modifier_method( $_, $code ) for @{$args}; |
261 | } |
262 | } |
d9bb6c63 |
263 | |
d939e016 |
264 | sub english_list { |
265 | my @items = sort @_; |
266 | |
267 | return $items[0] if @items == 1; |
268 | return "$items[0] and $items[1]" if @items == 2; |
269 | |
270 | my $tail = pop @items; |
271 | my $list = join ', ', @items; |
272 | $list .= ', and ' . $tail; |
273 | |
274 | return $list; |
275 | } |
276 | |
833b56a7 |
277 | sub _caller_info { |
278 | my $level = @_ ? ($_[0] + 1) : 2; |
279 | my %info; |
280 | @info{qw(package file line)} = caller($level); |
281 | return \%info; |
282 | } |
283 | |
27f2f43f |
284 | sub _create_alias { |
285 | my ($type, $name, $trait, $for) = @_; |
286 | my $package = _build_alias_package_name($type, $name, $trait); |
287 | Class::MOP::Class->initialize($package)->add_method( |
288 | register_implementation => sub { $for } |
289 | ); |
290 | } |
291 | |
292 | sub meta_attribute_alias { |
293 | my ($to, $from) = @_; |
294 | $from ||= caller; |
295 | my $meta = Class::MOP::class_of($from); |
296 | my $trait = $meta->isa('Moose::Meta::Role'); |
297 | _create_alias('Attribute', $to, $trait, $from); |
298 | } |
299 | |
300 | sub meta_class_alias { |
301 | my ($to, $from) = @_; |
302 | $from ||= caller; |
303 | my $meta = Class::MOP::class_of($from); |
304 | my $trait = $meta->isa('Moose::Meta::Role'); |
305 | _create_alias('Class', $to, $trait, $from); |
306 | } |
307 | |
88e88a7b |
308 | # XXX - this should be added to Params::Util |
5394a1c7 |
309 | sub _STRINGLIKE0 ($) { |
88e88a7b |
310 | return _STRING( $_[0] ) |
5394a1c7 |
311 | || ( defined $_[0] |
312 | && $_[0] eq q{} ) |
88e88a7b |
313 | || ( blessed $_[0] |
314 | && overload::Method( $_[0], q{""} ) |
315 | && length "$_[0]" ); |
316 | } |
317 | |
61907a02 |
318 | sub _reconcile_roles_for_metaclass { |
319 | my ($class_meta_name, $super_meta_name) = @_; |
320 | |
321 | my @role_differences = _role_differences( |
322 | $class_meta_name, $super_meta_name, |
323 | ); |
324 | |
325 | # handle the case where we need to fix compatibility between a class and |
326 | # its parent, but all roles in the class are already also done by the |
327 | # parent |
2c739d1a |
328 | # see t/metaclasses/metaclass_compat_no_fixing_bug.t |
61907a02 |
329 | return $super_meta_name |
330 | unless @role_differences; |
331 | |
332 | return Moose::Meta::Class->create_anon_class( |
333 | superclasses => [$super_meta_name], |
334 | roles => [map { $_->name } @role_differences], |
335 | cache => 1, |
336 | )->name; |
337 | } |
338 | |
339 | sub _role_differences { |
340 | my ($class_meta_name, $super_meta_name) = @_; |
6e15f532 |
341 | my @super_role_metas |
342 | = grep { !$_->isa('Moose::Meta::Role::Composite') } |
343 | $super_meta_name->meta->can('calculate_all_roles_with_inheritance') |
344 | ? $super_meta_name->meta->calculate_all_roles_with_inheritance |
345 | : $super_meta_name->meta->can('calculate_all_roles') |
346 | ? $super_meta_name->meta->calculate_all_roles |
347 | : (); |
348 | my @role_metas |
349 | = grep { !$_->isa('Moose::Meta::Role::Composite') } |
350 | $class_meta_name->meta->can('calculate_all_roles_with_inheritance') |
351 | ? $class_meta_name->meta->calculate_all_roles_with_inheritance |
352 | : $class_meta_name->meta->can('calculate_all_roles') |
353 | ? $class_meta_name->meta->calculate_all_roles |
354 | : (); |
61907a02 |
355 | my @differences; |
356 | for my $role_meta (@role_metas) { |
357 | push @differences, $role_meta |
358 | unless any { $_->name eq $role_meta->name } @super_role_metas; |
359 | } |
360 | return @differences; |
361 | } |
362 | |
d2782813 |
363 | sub _classes_differ_by_roles_only { |
364 | my ( $self_meta_name, $super_meta_name ) = @_; |
365 | |
366 | my $common_base_name |
367 | = _find_common_base( $self_meta_name, $super_meta_name ); |
368 | |
369 | return unless defined $common_base_name; |
370 | |
371 | my @super_meta_name_ancestor_names |
372 | = _get_ancestors_until( $super_meta_name, $common_base_name ); |
373 | my @class_meta_name_ancestor_names |
374 | = _get_ancestors_until( $self_meta_name, $common_base_name ); |
375 | |
376 | return |
377 | unless all { _is_role_only_subclass($_) } |
378 | @super_meta_name_ancestor_names, |
379 | @class_meta_name_ancestor_names; |
380 | |
381 | return 1; |
382 | } |
383 | |
384 | sub _find_common_base { |
385 | my ($meta1, $meta2) = map { Class::MOP::class_of($_) } @_; |
386 | return unless defined $meta1 && defined $meta2; |
387 | |
388 | # FIXME? This doesn't account for multiple inheritance (not sure |
389 | # if it needs to though). For example, if somewhere in $meta1's |
390 | # history it inherits from both ClassA and ClassB, and $meta2 |
391 | # inherits from ClassB & ClassA, does it matter? And what crazy |
392 | # fool would do that anyway? |
393 | |
394 | my %meta1_parents = map { $_ => 1 } $meta1->linearized_isa; |
395 | |
396 | return first { $meta1_parents{$_} } $meta2->linearized_isa; |
397 | } |
398 | |
399 | sub _get_ancestors_until { |
400 | my ($start_name, $until_name) = @_; |
401 | |
402 | my @ancestor_names; |
403 | for my $ancestor_name (Class::MOP::class_of($start_name)->linearized_isa) { |
404 | last if $ancestor_name eq $until_name; |
405 | push @ancestor_names, $ancestor_name; |
406 | } |
407 | return @ancestor_names; |
408 | } |
409 | |
410 | sub _is_role_only_subclass { |
411 | my ($meta_name) = @_; |
412 | my $meta = Class::MOP::Class->initialize($meta_name); |
413 | my @parent_names = $meta->superclasses; |
414 | |
415 | # XXX: don't feel like messing with multiple inheritance here... what would |
416 | # that even do? |
417 | return unless @parent_names == 1; |
418 | my ($parent_name) = @parent_names; |
419 | my $parent_meta = Class::MOP::Class->initialize($parent_name); |
420 | |
421 | # only get the roles attached to this particular class, don't look at |
422 | # superclasses |
423 | my @roles = $meta->can('calculate_all_roles') |
424 | ? $meta->calculate_all_roles |
425 | : (); |
426 | |
427 | # it's obviously not a role-only subclass if it doesn't do any roles |
428 | return unless @roles; |
429 | |
430 | # loop over all methods that are a part of the current class |
431 | # (not inherited) |
432 | for my $method ( $meta->_get_local_methods ) { |
433 | # always ignore meta |
ba7d613d |
434 | next if $method->isa('Class::MOP::Method::Meta'); |
d2782813 |
435 | # we'll deal with attributes below |
436 | next if $method->can('associated_attribute'); |
437 | # if the method comes from a role we consumed, ignore it |
438 | next if $meta->can('does_role') |
439 | && $meta->does_role($method->original_package_name); |
440 | # FIXME - this really isn't right. Just because a modifier is |
441 | # defined in a role doesn't mean it isn't _also_ defined in the |
442 | # subclass. |
443 | next if $method->isa('Class::MOP::Method::Wrapped') |
444 | && ( |
445 | (!scalar($method->around_modifiers) |
446 | || any { $_->has_around_method_modifiers($method->name) } @roles) |
447 | && (!scalar($method->before_modifiers) |
448 | || any { $_->has_before_method_modifiers($method->name) } @roles) |
449 | && (!scalar($method->after_modifiers) |
450 | || any { $_->has_after_method_modifiers($method->name) } @roles) |
451 | ); |
452 | |
453 | return 0; |
454 | } |
455 | |
456 | # loop over all attributes that are a part of the current class |
457 | # (not inherited) |
458 | # FIXME - this really isn't right. Just because an attribute is |
459 | # defined in a role doesn't mean it isn't _also_ defined in the |
460 | # subclass. |
461 | for my $attr (map { $meta->get_attribute($_) } $meta->get_attribute_list) { |
462 | next if any { $_->has_attribute($attr->name) } @roles; |
463 | |
464 | return 0; |
465 | } |
466 | |
467 | return 1; |
468 | } |
469 | |
9a641848 |
470 | 1; |
471 | |
ad46f524 |
472 | # ABSTRACT: Utilities for working with Moose classes |
473 | |
9a641848 |
474 | __END__ |
475 | |
476 | =pod |
477 | |
9a641848 |
478 | =head1 SYNOPSIS |
479 | |
6532ca5a |
480 | use Moose::Util qw/find_meta does_role search_class_by_role/; |
481 | |
482 | my $meta = find_meta($object) || die "No metaclass found"; |
9a641848 |
483 | |
adf82331 |
484 | if (does_role($object, $role)) { |
485 | print "The object can do $role!\n"; |
9a641848 |
486 | } |
487 | |
1631b53f |
488 | my $class = search_class_by_role($object, 'FooRole'); |
489 | print "Nearest class with 'FooRole' is $class\n"; |
490 | |
7125b244 |
491 | =head1 DESCRIPTION |
492 | |
2c3bf4e7 |
493 | This module provides a set of utility functions. Many of these |
494 | functions are intended for use in Moose itself or MooseX modules, but |
495 | some of them may be useful for use in your own code. |
7125b244 |
496 | |
497 | =head1 EXPORTED FUNCTIONS |
9a641848 |
498 | |
499 | =over 4 |
500 | |
2c3bf4e7 |
501 | =item B<find_meta($class_or_obj)> |
502 | |
503 | This method takes a class name or object and attempts to find a |
3ff98e47 |
504 | metaclass for the class, if one exists. It will B<not> create one if it |
2c3bf4e7 |
505 | does not yet exist. |
506 | |
560c498d |
507 | =item B<does_role($class_or_obj, $role_or_obj)> |
2c3bf4e7 |
508 | |
560c498d |
509 | Returns true if C<$class_or_obj> does the given C<$role_or_obj>. The role can |
510 | be provided as a name or a L<Moose::Meta::Role> object. |
6532ca5a |
511 | |
560c498d |
512 | The class must already have a metaclass for this to work. If it doesn't, this |
513 | function simply returns false. |
6532ca5a |
514 | |
560c498d |
515 | =item B<search_class_by_role($class_or_obj, $role_or_obj)> |
7125b244 |
516 | |
2c3bf4e7 |
517 | Returns the first class in the class's precedence list that does |
560c498d |
518 | C<$role_or_obj>, if any. The role can be either a name or a |
519 | L<Moose::Meta::Role> object. |
7125b244 |
520 | |
2c3bf4e7 |
521 | The class must already have a metaclass for this to work. |
7125b244 |
522 | |
2c3bf4e7 |
523 | =item B<apply_all_roles($applicant, @roles)> |
7125b244 |
524 | |
2c3bf4e7 |
525 | This function applies one or more roles to the given C<$applicant> The |
526 | applicant can be a role name, class name, or object. |
d7d8a8c7 |
527 | |
2c3bf4e7 |
528 | The C<$applicant> must already have a metaclass object. |
529 | |
560c498d |
530 | The list of C<@roles> should a list of names or L<Moose::Meta::Role> objects, |
531 | each of which can be followed by an optional hash reference of options |
532 | (C<-excludes> and C<-alias>). |
d7d8a8c7 |
533 | |
b099a649 |
534 | =item B<ensure_all_roles($applicant, @roles)> |
535 | |
536 | This function is similar to L</apply_all_roles>, but only applies roles that |
537 | C<$applicant> does not already consume. |
538 | |
d26f5671 |
539 | =item B<with_traits($class_name, @role_names)> |
540 | |
541 | This function creates a new class from C<$class_name> with each of |
542 | C<@role_names> applied. It returns the name of the new class. |
543 | |
ab76842e |
544 | =item B<get_all_attribute_values($meta, $instance)> |
545 | |
2c3bf4e7 |
546 | Returns a hash reference containing all of the C<$instance>'s |
547 | attributes. The keys are attribute names. |
ab76842e |
548 | |
549 | =item B<get_all_init_args($meta, $instance)> |
550 | |
2c3bf4e7 |
551 | Returns a hash reference containing all of the C<init_arg> values for |
552 | the instance's attributes. The values are the associated attribute |
553 | values. If an attribute does not have a defined C<init_arg>, it is |
554 | skipped. |
555 | |
556 | This could be useful in cloning an object. |
ab76842e |
557 | |
a3738e5b |
558 | =item B<resolve_metaclass_alias($category, $name, %options)> |
559 | |
560 | =item B<resolve_metatrait_alias($category, $name, %options)> |
561 | |
2c3bf4e7 |
562 | Resolves a short name to a full class name. Short names are often used |
563 | when specifying the C<metaclass> or C<traits> option for an attribute: |
a3738e5b |
564 | |
565 | has foo => ( |
566 | metaclass => "Bar", |
567 | ); |
568 | |
8a8856de |
569 | The name resolution mechanism is covered in |
570 | L<Moose/Metaclass and Trait Name Resolution>. |
5f71050b |
571 | |
27f2f43f |
572 | =item B<meta_class_alias($to[, $from])> |
573 | |
574 | =item B<meta_attribute_alias($to[, $from])> |
575 | |
576 | Create an alias from the class C<$from> (or the current package, if |
577 | C<$from> is unspecified), so that |
578 | L<Moose/Metaclass and Trait Name Resolution> works properly. |
579 | |
57385c0d |
580 | =item B<english_list(@items)> |
581 | |
582 | Given a list of scalars, turns them into a proper list in English |
583 | ("one and two", "one, two, three, and four"). This is used to help us |
584 | make nicer error messages. |
585 | |
7125b244 |
586 | =back |
9a641848 |
587 | |
7125b244 |
588 | =head1 TODO |
9a641848 |
589 | |
7125b244 |
590 | Here is a list of possible functions to write |
9a641848 |
591 | |
7125b244 |
592 | =over 4 |
1631b53f |
593 | |
7125b244 |
594 | =item discovering original method from modified method |
1631b53f |
595 | |
7125b244 |
596 | =item search for origin class of a method or attribute |
1631b53f |
597 | |
9a641848 |
598 | =back |
599 | |
600 | =head1 BUGS |
601 | |
d4048ef3 |
602 | See L<Moose/BUGS> for details on reporting bugs. |
9a641848 |
603 | |
9a641848 |
604 | =cut |
605 | |