Commit | Line | Data |
9b871d79 |
1 | package Class::MOP::Mixin::HasMethods; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
f1af2436 |
6 | use Class::MOP::Method::Meta; |
7 | |
bd2550f8 |
8 | our $VERSION = '1.12'; |
9b871d79 |
9 | $VERSION = eval $VERSION; |
10 | our $AUTHORITY = 'cpan:STEVAN'; |
11 | |
12 | use Scalar::Util 'blessed'; |
13 | use Carp 'confess'; |
14 | use Sub::Name 'subname'; |
15 | |
16 | use base 'Class::MOP::Mixin'; |
17 | |
5f90deee |
18 | sub _meta_method_class { 'Class::MOP::Method::Meta' } |
f1af2436 |
19 | |
20 | sub _add_meta_method { |
21 | my $self = shift; |
37a46507 |
22 | my ($name) = @_; |
f1af2436 |
23 | my $existing_method = $self->can('find_method_by_name') |
37a46507 |
24 | ? $self->find_method_by_name($name) |
25 | : $self->get_method($name); |
f1af2436 |
26 | return if $existing_method |
27 | && $existing_method->isa($self->_meta_method_class); |
28 | $self->add_method( |
37a46507 |
29 | $name => $self->_meta_method_class->wrap( |
30 | name => $name, |
f1af2436 |
31 | package_name => $self->name, |
32 | associated_metaclass => $self, |
33 | ) |
34 | ); |
35 | } |
9b871d79 |
36 | |
9b871d79 |
37 | sub wrap_method_body { |
38 | my ( $self, %args ) = @_; |
39 | |
40 | ( 'CODE' eq ref $args{body} ) |
41 | || confess "Your code block must be a CODE reference"; |
42 | |
43 | $self->method_metaclass->wrap( |
44 | package_name => $self->name, |
45 | %args, |
46 | ); |
47 | } |
48 | |
49 | sub add_method { |
50 | my ( $self, $method_name, $method ) = @_; |
51 | ( defined $method_name && length $method_name ) |
52 | || confess "You must define a method name"; |
53 | |
ef8d6eae |
54 | my $package_name = $self->name; |
55 | |
9b871d79 |
56 | my $body; |
57 | if ( blessed($method) ) { |
58 | $body = $method->body; |
ef8d6eae |
59 | if ( $method->package_name ne $package_name ) { |
9b871d79 |
60 | $method = $method->clone( |
ef8d6eae |
61 | package_name => $package_name, |
9b871d79 |
62 | name => $method_name, |
5f90deee |
63 | ); |
9b871d79 |
64 | } |
65 | |
66 | $method->attach_to_class($self); |
67 | } |
68 | else { |
69 | # If a raw code reference is supplied, its method object is not created. |
70 | # The method object won't be created until required. |
71 | $body = $method; |
72 | } |
73 | |
74 | $self->_method_map->{$method_name} = $method; |
75 | |
5f90deee |
76 | my ($current_package, $current_name) = Class::MOP::get_code_info($body); |
9b871d79 |
77 | |
5f90deee |
78 | subname($package_name . '::' . $method_name, $body) |
79 | unless defined $current_name && $current_name !~ /^__ANON__/; |
9b871d79 |
80 | |
74fce899 |
81 | $self->add_package_symbol("&$method_name", $body); |
3459c398 |
82 | |
5f90deee |
83 | # we added the method to the method map too, so it's still valid |
84 | $self->update_package_cache_flag; |
9b871d79 |
85 | } |
86 | |
87 | sub _code_is_mine { |
88 | my ( $self, $code ) = @_; |
89 | |
90 | my ( $code_package, $code_name ) = Class::MOP::get_code_info($code); |
91 | |
5f90deee |
92 | return ( $code_package && $code_package eq $self->name ) |
9b871d79 |
93 | || ( $code_package eq 'constant' && $code_name eq '__ANON__' ); |
94 | } |
95 | |
96 | sub has_method { |
97 | my ( $self, $method_name ) = @_; |
98 | |
99 | ( defined $method_name && length $method_name ) |
100 | || confess "You must define a method name"; |
101 | |
5018df3e |
102 | my $method = $self->_get_maybe_raw_method($method_name) |
103 | or return; |
104 | |
105 | return defined($self->_method_map->{$method_name} = $method); |
9b871d79 |
106 | } |
107 | |
108 | sub get_method { |
109 | my ( $self, $method_name ) = @_; |
110 | |
111 | ( defined $method_name && length $method_name ) |
112 | || confess "You must define a method name"; |
113 | |
1865cd32 |
114 | my $method = $self->_get_maybe_raw_method($method_name) |
115 | or return; |
116 | |
117 | return $method if blessed $method; |
118 | |
119 | return $self->_method_map->{$method_name} = $self->wrap_method_body( |
120 | body => $method, |
121 | name => $method_name, |
122 | associated_metaclass => $self, |
123 | ); |
124 | } |
125 | |
126 | sub _get_maybe_raw_method { |
127 | my ( $self, $method_name ) = @_; |
128 | |
67c6080e |
129 | my $map_entry = $self->_method_map->{$method_name}; |
5018df3e |
130 | return $map_entry if defined $map_entry; |
67c6080e |
131 | |
74fce899 |
132 | my $code = $self->get_package_symbol("&$method_name"); |
9b871d79 |
133 | |
5f90deee |
134 | return unless $code && $self->_code_is_mine($code); |
9b871d79 |
135 | |
1865cd32 |
136 | return $code; |
9b871d79 |
137 | } |
138 | |
139 | sub remove_method { |
140 | my ( $self, $method_name ) = @_; |
5f90deee |
141 | |
9b871d79 |
142 | ( defined $method_name && length $method_name ) |
143 | || confess "You must define a method name"; |
144 | |
38bcde3f |
145 | my $removed_method = delete $self->_method_map->{$method_name}; |
9b871d79 |
146 | |
74fce899 |
147 | $self->remove_package_symbol("&$method_name"); |
9b871d79 |
148 | |
149 | $removed_method->detach_from_class |
5f90deee |
150 | if blessed($removed_method); |
9b871d79 |
151 | |
152 | # still valid, since we just removed the method from the map |
153 | $self->update_package_cache_flag; |
154 | |
155 | return $removed_method; |
156 | } |
157 | |
158 | sub get_method_list { |
159 | my $self = shift; |
ea6dca17 |
160 | |
39e3013b |
161 | return keys %{ $self->_full_method_map }; |
9b871d79 |
162 | } |
163 | |
fe1b970a |
164 | sub _get_local_methods { |
165 | my $self = shift; |
166 | |
39e3013b |
167 | return values %{ $self->_full_method_map }; |
fe1b970a |
168 | } |
169 | |
78902d1d |
170 | sub _restore_metamethods_from { |
171 | my $self = shift; |
172 | my ($old_meta) = @_; |
173 | |
174 | for my $method ($old_meta->_get_local_methods) { |
5281e1f9 |
175 | $method->_make_compatible_with($self->method_metaclass); |
78902d1d |
176 | $self->add_method($method->name => $method); |
177 | } |
178 | } |
179 | |
fd05ff5f |
180 | sub reset_package_cache_flag { (shift)->{'_package_cache_flag'} = undef } |
181 | sub update_package_cache_flag { |
182 | my $self = shift; |
183 | # NOTE: |
184 | # we can manually update the cache number |
185 | # since we are actually adding the method |
186 | # to our cache as well. This avoids us |
187 | # having to regenerate the method_map. |
188 | # - SL |
189 | $self->{'_package_cache_flag'} = Class::MOP::check_package_cache_flag($self->name); |
190 | } |
191 | |
39e3013b |
192 | sub _full_method_map { |
193 | my $self = shift; |
194 | |
195 | my $pkg_gen = Class::MOP::check_package_cache_flag($self->name); |
196 | |
197 | if (($self->{_package_cache_flag_full} || -1) != $pkg_gen) { |
198 | # forcibly reify all method map entries |
199 | $self->get_method($_) |
200 | for $self->list_all_package_symbols('CODE'); |
201 | $self->{_package_cache_flag_full} = $pkg_gen; |
202 | } |
203 | |
204 | return $self->_method_map; |
205 | } |
206 | |
9b871d79 |
207 | 1; |
208 | |
209 | __END__ |
210 | |
211 | =pod |
212 | |
213 | =head1 NAME |
214 | |
215 | Class::MOP::Mixin::HasMethods - Methods for metaclasses which have methods |
216 | |
217 | =head1 DESCRIPTION |
218 | |
219 | This class implements methods for metaclasses which have methods |
220 | (L<Class::MOP::Package> and L<Moose::Meta::Role>). See L<Class::MOP::Package> |
221 | for API details. |
222 | |
223 | =head1 AUTHORS |
224 | |
225 | Dave Rolsky E<lt>autarch@urth.orgE<gt> |
226 | |
227 | =head1 COPYRIGHT AND LICENSE |
228 | |
3e2c8600 |
229 | Copyright 2006-2010 by Infinity Interactive, Inc. |
9b871d79 |
230 | |
231 | L<http://www.iinteractive.com> |
232 | |
233 | This library is free software; you can redistribute it and/or modify |
234 | it under the same terms as Perl itself. |
235 | |
236 | =cut |