1 package Class::MOP::Mixin::HasMethods;
6 use Class::MOP::Method::Meta;
8 use Scalar::Util 'blessed';
10 use Sub::Name 'subname';
12 use base 'Class::MOP::Mixin';
14 sub _meta_method_class { 'Class::MOP::Method::Meta' }
16 sub _add_meta_method {
19 my $existing_method = $self->can('find_method_by_name')
20 ? $self->find_method_by_name($name)
21 : $self->get_method($name);
22 return if $existing_method
23 && $existing_method->isa($self->_meta_method_class);
25 $name => $self->_meta_method_class->wrap(
27 package_name => $self->name,
28 associated_metaclass => $self,
33 sub wrap_method_body {
34 my ( $self, %args ) = @_;
36 ( 'CODE' eq ref $args{body} )
37 || confess "Your code block must be a CODE reference";
39 $self->method_metaclass->wrap(
40 package_name => $self->name,
46 my ( $self, $method_name, $method ) = @_;
47 ( defined $method_name && length $method_name )
48 || confess "You must define a method name";
50 my $package_name = $self->name;
53 if ( blessed($method) ) {
54 $body = $method->body;
55 if ( $method->package_name ne $package_name ) {
56 $method = $method->clone(
57 package_name => $package_name,
62 $method->attach_to_class($self);
65 # If a raw code reference is supplied, its method object is not created.
66 # The method object won't be created until required.
70 $self->_method_map->{$method_name} = $method;
72 my ($current_package, $current_name) = Class::MOP::get_code_info($body);
74 subname($package_name . '::' . $method_name, $body)
75 unless defined $current_name && $current_name !~ /^__ANON__/;
77 $self->add_package_symbol("&$method_name", $body);
79 # we added the method to the method map too, so it's still valid
80 $self->update_package_cache_flag;
84 my ( $self, $code ) = @_;
86 my ( $code_package, $code_name ) = Class::MOP::get_code_info($code);
88 return ( $code_package && $code_package eq $self->name )
89 || ( $code_package eq 'constant' && $code_name eq '__ANON__' );
93 my ( $self, $method_name ) = @_;
95 ( defined $method_name && length $method_name )
96 || confess "You must define a method name";
98 my $method = $self->_get_maybe_raw_method($method_name)
101 return defined($self->_method_map->{$method_name} = $method);
105 my ( $self, $method_name ) = @_;
107 ( defined $method_name && length $method_name )
108 || confess "You must define a method name";
110 my $method = $self->_get_maybe_raw_method($method_name)
113 return $method if blessed $method;
115 return $self->_method_map->{$method_name} = $self->wrap_method_body(
117 name => $method_name,
118 associated_metaclass => $self,
122 sub _get_maybe_raw_method {
123 my ( $self, $method_name ) = @_;
125 my $map_entry = $self->_method_map->{$method_name};
126 return $map_entry if defined $map_entry;
128 my $code = $self->get_package_symbol("&$method_name");
130 return unless $code && $self->_code_is_mine($code);
136 my ( $self, $method_name ) = @_;
138 ( defined $method_name && length $method_name )
139 || confess "You must define a method name";
141 my $removed_method = delete $self->_method_map->{$method_name};
143 $self->remove_package_symbol("&$method_name");
145 $removed_method->detach_from_class
146 if blessed($removed_method);
148 # still valid, since we just removed the method from the map
149 $self->update_package_cache_flag;
151 return $removed_method;
154 sub get_method_list {
157 return keys %{ $self->_full_method_map };
160 sub _get_local_methods {
163 return values %{ $self->_full_method_map };
166 sub _restore_metamethods_from {
170 for my $method ($old_meta->_get_local_methods) {
171 $method->_make_compatible_with($self->method_metaclass);
172 $self->add_method($method->name => $method);
176 sub reset_package_cache_flag { (shift)->{'_package_cache_flag'} = undef }
177 sub update_package_cache_flag {
180 # we can manually update the cache number
181 # since we are actually adding the method
182 # to our cache as well. This avoids us
183 # having to regenerate the method_map.
185 $self->{'_package_cache_flag'} = Class::MOP::check_package_cache_flag($self->name);
188 sub _full_method_map {
191 my $pkg_gen = Class::MOP::check_package_cache_flag($self->name);
193 if (($self->{_package_cache_flag_full} || -1) != $pkg_gen) {
194 # forcibly reify all method map entries
195 $self->get_method($_)
196 for $self->list_all_package_symbols('CODE');
197 $self->{_package_cache_flag_full} = $pkg_gen;
200 return $self->_method_map;
205 # ABSTRACT: Methods for metaclasses which have methods
213 This class implements methods for metaclasses which have methods
214 (L<Class::MOP::Package> and L<Moose::Meta::Role>). See L<Class::MOP::Package>