1 package Moose::Meta::Role::Application::ToClass;
8 use Scalar::Util 'blessed';
12 our $VERSION = '0.01';
13 our $AUTHORITY = 'cpan:STEVAN';
15 use base 'Moose::Meta::Role::Application';
18 my ($self, $role, $class) = @_;
19 $self->SUPER::apply($role, $class);
20 $class->add_role($role);
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 . "'";
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'";
35 sub check_required_methods {
36 my ($self, $role, $class) = @_;
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) {
45 if (!$class->find_method_by_name($required_method_name)) {
47 next if $self->is_aliased_method($required_method_name);
49 confess "'" . $role->name . "' requires the method '$required_method_name' " .
50 "to be implemented by '" . $class->name . "'";
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);
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 '" . $class->name . "', the method is only an attribute accessor";
65 # All other tests here have been removed, they were tests
66 # for overriden methods and before/after/around modifiers.
67 # But we realized that for classes any overriden or modified
68 # methods would be backed by a real method of that name
69 # (and therefore meet the requirement). And for roles, the
70 # overriden and modified methods are "in statis" and so would
71 # not show up in this test anyway (and as a side-effect they
72 # would not fufill the requirement, which is exactly what we
73 # want them to do anyway).
79 sub check_required_attributes {
83 sub apply_attributes {
84 my ($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)) {
94 # this is kinda ugly ...
95 if ($class->isa('Moose::Meta::Class')) {
96 $class->_process_attribute(
98 %{$role->get_attribute($attribute_name)}
102 $class->add_attribute(
104 $role->get_attribute($attribute_name)
112 my ($self, $role, $class) = @_;
113 foreach my $method_name ($role->get_method_list) {
115 next if $self->is_method_excluded($method_name);
117 my $orig_method_name = $method_name;
119 if ($self->is_method_aliased($method_name)) {
120 $method_name = $self->get_method_aliases->{$method_name};
123 # it if it has one already
124 if ($class->has_method($method_name) &&
125 # and if they are not the same thing ...
126 $class->get_method($method_name)->body != $role->get_method($method_name)->body) {
130 # add it, although it could be overriden
131 $class->alias_method(
133 $role->get_method($orig_method_name)
137 # we must reset the cache here since
138 # we are just aliasing methods, otherwise
139 # the modifiers go wonky.
140 $class->reset_package_cache_flag;
143 sub apply_override_method_modifiers {
144 my ($self, $role, $class) = @_;
145 foreach my $method_name ($role->get_method_modifier_list('override')) {
146 # it if it has one already then ...
147 if ($class->has_method($method_name)) {
151 # if this is not a role, then we need to
152 # find the original package of the method
153 # so that we can tell the class were to
154 # find the right super() method
155 my $method = $role->get_override_method_modifier($method_name);
156 my ($package) = Class::MOP::get_code_info($method);
157 # if it is a class, we just add it
158 $class->add_override_method_modifier($method_name, $method, $package);
163 sub apply_method_modifiers {
164 my ($self, $modifier_type, $role, $class) = @_;
165 my $add = "add_${modifier_type}_method_modifier";
166 my $get = "get_${modifier_type}_method_modifiers";
167 foreach my $method_name ($role->get_method_modifier_list($modifier_type)) {
171 ) foreach $role->$get($method_name);
183 Moose::Meta::Role::Application::ToClass
197 =item B<check_role_exclusions>
199 =item B<check_required_methods>
201 =item B<check_required_attributes>
203 =item B<apply_attributes>
205 =item B<apply_methods>
207 =item B<apply_method_modifiers>
209 =item B<apply_override_method_modifiers>
215 All complex software has bugs lurking in it, and this module is no
216 exception. If you find a bug please either email me, or add the bug
221 Stevan Little E<lt>stevan@iinteractive.comE<gt>
223 =head1 COPYRIGHT AND LICENSE
225 Copyright 2006-2008 by Infinity Interactive, Inc.
227 L<http://www.iinteractive.com>
229 This library is free software; you can redistribute it and/or modify
230 it under the same terms as Perl itself.