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1 | package Moose::Meta::Role::Application::ToClass; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use metaclass; |
6 | |
7 | use Carp 'confess'; |
8 | use Scalar::Util 'blessed'; |
9 | |
10 | use Data::Dumper; |
11 | |
12 | our $VERSION = '0.01'; |
13 | our $AUTHORITY = 'cpan:STEVAN'; |
14 | |
15 | use base 'Moose::Meta::Role::Application'; |
16 | |
1c9db35c |
17 | sub apply { |
c4538447 |
18 | my ($self, $role, $class) = @_; |
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19 | $self->SUPER::apply($role, $class); |
c4538447 |
20 | $class->add_role($role); |
1c9db35c |
21 | } |
22 | |
23 | sub check_role_exclusions { |
24 | my ($self, $role, $class) = @_; |
25 | if ($class->excludes_role($role->name)) { |
26 | confess "Conflict detected: " . $class->name . " excludes role '" . $role->name . "'"; |
27 | } |
28 | foreach my $excluded_role_name ($role->get_excluded_roles_list) { |
29 | if ($class->does_role($excluded_role_name)) { |
30 | confess "The class " . $class->name . " does the excluded role '$excluded_role_name'"; |
31 | } |
32 | } |
33 | } |
34 | |
35 | sub check_required_methods { |
36 | my ($self, $role, $class) = @_; |
37 | # NOTE: |
38 | # we might need to move this down below the |
39 | # the attributes so that we can require any |
40 | # attribute accessors. However I am thinking |
41 | # that maybe those are somehow exempt from |
42 | # the require methods stuff. |
43 | foreach my $required_method_name ($role->get_required_method_list) { |
44 | |
3e19778d |
45 | if (!$class->find_method_by_name($required_method_name)) { |
46 | |
47 | next if $self->is_aliased_method($required_method_name); |
48 | |
1c9db35c |
49 | confess "'" . $role->name . "' requires the method '$required_method_name' " . |
50 | "to be implemented by '" . $class->name . "'"; |
51 | } |
52 | else { |
53 | # NOTE: |
54 | # we need to make sure that the method is |
55 | # not a method modifier, because those do |
56 | # not satisfy the requirements ... |
57 | my $method = $class->find_method_by_name($required_method_name); |
58 | |
59 | # check if it is a generated accessor ... |
60 | (!$method->isa('Class::MOP::Method::Accessor')) |
61 | || confess "'" . $role->name . "' requires the method '$required_method_name' " . |
62 | "to be implemented by '" . $class->name . "', the method is only an attribute accessor"; |
63 | |
64 | # NOTE: |
65 | # All other tests here have been removed, they were tests |
66 | # for overriden methods and before/after/around modifiers. |
67 | # But we realized that for classes any overriden or modified |
68 | # methods would be backed by a real method of that name |
69 | # (and therefore meet the requirement). And for roles, the |
70 | # overriden and modified methods are "in statis" and so would |
71 | # not show up in this test anyway (and as a side-effect they |
72 | # would not fufill the requirement, which is exactly what we |
73 | # want them to do anyway). |
74 | # - SL |
75 | } |
76 | } |
77 | } |
78 | |
709c321c |
79 | sub check_required_attributes { |
80 | |
81 | } |
82 | |
1c9db35c |
83 | sub apply_attributes { |
84 | my ($self, $role, $class) = @_; |
85 | foreach my $attribute_name ($role->get_attribute_list) { |
86 | # it if it has one already |
87 | if ($class->has_attribute($attribute_name) && |
88 | # make sure we haven't seen this one already too |
89 | $class->get_attribute($attribute_name) != $role->get_attribute($attribute_name)) { |
90 | next; |
91 | } |
92 | else { |
93 | # NOTE: |
94 | # this is kinda ugly ... |
95 | if ($class->isa('Moose::Meta::Class')) { |
96 | $class->_process_attribute( |
97 | $attribute_name, |
98 | %{$role->get_attribute($attribute_name)} |
99 | ); |
100 | } |
101 | else { |
102 | $class->add_attribute( |
103 | $attribute_name, |
104 | $role->get_attribute($attribute_name) |
105 | ); |
106 | } |
107 | } |
108 | } |
109 | } |
110 | |
111 | sub apply_methods { |
112 | my ($self, $role, $class) = @_; |
113 | foreach my $method_name ($role->get_method_list) { |
c4538447 |
114 | |
115 | next if $self->is_method_excluded($method_name); |
116 | |
1c9db35c |
117 | # it if it has one already |
118 | if ($class->has_method($method_name) && |
119 | # and if they are not the same thing ... |
120 | $class->get_method($method_name)->body != $role->get_method($method_name)->body) { |
121 | next; |
122 | } |
43a41ede |
123 | else { |
124 | |
1c9db35c |
125 | # add it, although it could be overriden |
126 | $class->alias_method( |
127 | $method_name, |
43a41ede |
128 | $role->get_method($method_name) |
129 | ); |
1c9db35c |
130 | } |
43a41ede |
131 | |
132 | if ($self->is_method_aliased($method_name)) { |
133 | my $aliased_method_name = $self->get_method_aliases->{$method_name}; |
134 | # it if it has one already |
135 | if ($class->has_method($aliased_method_name) && |
136 | # and if they are not the same thing ... |
137 | $class->get_method($aliased_method_name)->body != $role->get_method($method_name)->body) { |
138 | confess "Cannot create a method alias if a local method of the same name exists"; |
139 | } |
140 | $class->alias_method( |
141 | $aliased_method_name, |
142 | $role->get_method($method_name) |
143 | ); |
144 | } |
1c9db35c |
145 | } |
146 | # we must reset the cache here since |
147 | # we are just aliasing methods, otherwise |
148 | # the modifiers go wonky. |
149 | $class->reset_package_cache_flag; |
150 | } |
151 | |
152 | sub apply_override_method_modifiers { |
153 | my ($self, $role, $class) = @_; |
154 | foreach my $method_name ($role->get_method_modifier_list('override')) { |
155 | # it if it has one already then ... |
156 | if ($class->has_method($method_name)) { |
157 | next; |
158 | } |
159 | else { |
160 | # if this is not a role, then we need to |
161 | # find the original package of the method |
162 | # so that we can tell the class were to |
163 | # find the right super() method |
164 | my $method = $role->get_override_method_modifier($method_name); |
165 | my ($package) = Class::MOP::get_code_info($method); |
166 | # if it is a class, we just add it |
167 | $class->add_override_method_modifier($method_name, $method, $package); |
168 | } |
169 | } |
170 | } |
171 | |
172 | sub apply_method_modifiers { |
173 | my ($self, $modifier_type, $role, $class) = @_; |
174 | my $add = "add_${modifier_type}_method_modifier"; |
175 | my $get = "get_${modifier_type}_method_modifiers"; |
176 | foreach my $method_name ($role->get_method_modifier_list($modifier_type)) { |
177 | $class->$add( |
178 | $method_name, |
179 | $_ |
180 | ) foreach $role->$get($method_name); |
181 | } |
182 | } |
183 | |
fb1e11d5 |
184 | 1; |
185 | |
186 | __END__ |
187 | |
188 | =pod |
189 | |
190 | =head1 NAME |
191 | |
192 | Moose::Meta::Role::Application::ToClass |
193 | |
194 | =head1 DESCRIPTION |
195 | |
196 | =head2 METHODS |
197 | |
198 | =over 4 |
199 | |
200 | =item B<new> |
201 | |
202 | =item B<meta> |
203 | |
1c9db35c |
204 | =item B<apply> |
205 | |
709c321c |
206 | =item B<check_role_exclusions> |
207 | |
1c9db35c |
208 | =item B<check_required_methods> |
209 | |
709c321c |
210 | =item B<check_required_attributes> |
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211 | |
212 | =item B<apply_attributes> |
213 | |
214 | =item B<apply_methods> |
215 | |
216 | =item B<apply_method_modifiers> |
217 | |
1c9db35c |
218 | =item B<apply_override_method_modifiers> |
219 | |
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220 | =back |
221 | |
222 | =head1 BUGS |
223 | |
224 | All complex software has bugs lurking in it, and this module is no |
225 | exception. If you find a bug please either email me, or add the bug |
226 | to cpan-RT. |
227 | |
228 | =head1 AUTHOR |
229 | |
230 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
231 | |
232 | =head1 COPYRIGHT AND LICENSE |
233 | |
778db3ac |
234 | Copyright 2006-2008 by Infinity Interactive, Inc. |
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235 | |
236 | L<http://www.iinteractive.com> |
237 | |
238 | This library is free software; you can redistribute it and/or modify |
239 | it under the same terms as Perl itself. |
240 | |
241 | =cut |
242 | |