1 package Class::MOP::Mixin::HasMethods;
6 use Class::MOP::Method::Meta;
8 our $AUTHORITY = 'cpan:STEVAN';
10 use Scalar::Util 'blessed';
12 use Sub::Name 'subname';
14 use base 'Class::MOP::Mixin';
16 sub _meta_method_class { 'Class::MOP::Method::Meta' }
18 sub _add_meta_method {
21 my $existing_method = $self->can('find_method_by_name')
22 ? $self->find_method_by_name($name)
23 : $self->get_method($name);
24 return if $existing_method
25 && $existing_method->isa($self->_meta_method_class);
27 $name => $self->_meta_method_class->wrap(
29 package_name => $self->name,
30 associated_metaclass => $self,
35 sub wrap_method_body {
36 my ( $self, %args ) = @_;
38 ( 'CODE' eq ref $args{body} )
39 || confess "Your code block must be a CODE reference";
41 $self->method_metaclass->wrap(
42 package_name => $self->name,
48 my ( $self, $method_name, $method ) = @_;
49 ( defined $method_name && length $method_name )
50 || confess "You must define a method name";
52 my $package_name = $self->name;
55 if ( blessed($method) ) {
56 $body = $method->body;
57 if ( $method->package_name ne $package_name ) {
58 $method = $method->clone(
59 package_name => $package_name,
64 $method->attach_to_class($self);
67 # If a raw code reference is supplied, its method object is not created.
68 # The method object won't be created until required.
72 $self->_method_map->{$method_name} = $method;
74 my ($current_package, $current_name) = Class::MOP::get_code_info($body);
76 subname($package_name . '::' . $method_name, $body)
77 unless defined $current_name && $current_name !~ /^__ANON__/;
79 $self->add_package_symbol("&$method_name", $body);
81 # we added the method to the method map too, so it's still valid
82 $self->update_package_cache_flag;
86 my ( $self, $code ) = @_;
88 my ( $code_package, $code_name ) = Class::MOP::get_code_info($code);
90 return ( $code_package && $code_package eq $self->name )
91 || ( $code_package eq 'constant' && $code_name eq '__ANON__' );
95 my ( $self, $method_name ) = @_;
97 ( defined $method_name && length $method_name )
98 || confess "You must define a method name";
100 my $method = $self->_get_maybe_raw_method($method_name)
103 return defined($self->_method_map->{$method_name} = $method);
107 my ( $self, $method_name ) = @_;
109 ( defined $method_name && length $method_name )
110 || confess "You must define a method name";
112 my $method = $self->_get_maybe_raw_method($method_name)
115 return $method if blessed $method;
117 return $self->_method_map->{$method_name} = $self->wrap_method_body(
119 name => $method_name,
120 associated_metaclass => $self,
124 sub _get_maybe_raw_method {
125 my ( $self, $method_name ) = @_;
127 my $map_entry = $self->_method_map->{$method_name};
128 return $map_entry if defined $map_entry;
130 my $code = $self->get_package_symbol("&$method_name");
132 return unless $code && $self->_code_is_mine($code);
138 my ( $self, $method_name ) = @_;
140 ( defined $method_name && length $method_name )
141 || confess "You must define a method name";
143 my $removed_method = delete $self->_method_map->{$method_name};
145 $self->remove_package_symbol("&$method_name");
147 $removed_method->detach_from_class
148 if blessed($removed_method);
150 # still valid, since we just removed the method from the map
151 $self->update_package_cache_flag;
153 return $removed_method;
156 sub get_method_list {
159 return keys %{ $self->_full_method_map };
162 sub _get_local_methods {
165 return values %{ $self->_full_method_map };
168 sub _restore_metamethods_from {
172 for my $method ($old_meta->_get_local_methods) {
173 $method->_make_compatible_with($self->method_metaclass);
174 $self->add_method($method->name => $method);
178 sub reset_package_cache_flag { (shift)->{'_package_cache_flag'} = undef }
179 sub update_package_cache_flag {
182 # we can manually update the cache number
183 # since we are actually adding the method
184 # to our cache as well. This avoids us
185 # having to regenerate the method_map.
187 $self->{'_package_cache_flag'} = Class::MOP::check_package_cache_flag($self->name);
190 sub _full_method_map {
193 my $pkg_gen = Class::MOP::check_package_cache_flag($self->name);
195 if (($self->{_package_cache_flag_full} || -1) != $pkg_gen) {
196 # forcibly reify all method map entries
197 $self->get_method($_)
198 for $self->list_all_package_symbols('CODE');
199 $self->{_package_cache_flag_full} = $pkg_gen;
202 return $self->_method_map;
207 # ABSTRACT: Methods for metaclasses which have methods
215 This class implements methods for metaclasses which have methods
216 (L<Class::MOP::Package> and L<Moose::Meta::Role>). See L<Class::MOP::Package>