package Mouse::Meta::Role;
-use Mouse::Util qw(:meta not_supported); # enables strict and warnings
+use Mouse::Util qw(:meta); # enables strict and warnings
use Mouse::Meta::Module;
our @ISA = qw(Mouse::Meta::Module);
return;
}
-sub _check_required_methods{
- my($role, $consumer, $args) = @_;
-
- if($args->{_to} eq 'role'){
- $consumer->add_required_methods($role->get_required_method_list);
- }
- else{ # to class or instance
- my $consumer_class_name = $consumer->name;
-
- my @missing;
- foreach my $method_name(@{$role->{required_methods}}){
- next if exists $args->{aliased_methods}{$method_name};
- next if exists $role->{methods}{$method_name};
- next if $consumer_class_name->can($method_name);
-
- push @missing, $method_name;
- }
- if(@missing){
- $role->throw_error(sprintf "'%s' requires the method%s %s to be implemented by '%s'",
- $role->name,
- (@missing == 1 ? '' : 's'), # method or methods
- Mouse::Util::quoted_english_list(@missing),
- $consumer_class_name);
- }
- }
-
- return;
-}
-
-sub _apply_methods{
- my($role, $consumer, $args) = @_;
-
- my $alias = $args->{-alias};
- my $excludes = $args->{-excludes};
-
- foreach my $method_name($role->get_method_list){
- next if $method_name eq 'meta';
-
- my $code = $role->get_method_body($method_name);
-
- if(!exists $excludes->{$method_name}){
- if(!$consumer->has_method($method_name)){
- # The third argument $role is used in Role::Composite
- $consumer->add_method($method_name => $code, $role);
- }
- }
-
- if(exists $alias->{$method_name}){
- my $dstname = $alias->{$method_name};
-
- my $dstcode = $consumer->get_method_body($dstname);
-
- if(defined($dstcode) && $dstcode != $code){
- $role->throw_error("Cannot create a method alias if a local method of the same name exists");
- }
- else{
- $consumer->add_method($dstname => $code, $role);
- }
- }
- }
-
- return;
-}
-
-sub _apply_attributes{
- #my($role, $consumer, $args) = @_;
- my($role, $consumer) = @_;
-
- for my $attr_name ($role->get_attribute_list) {
- next if $consumer->has_attribute($attr_name);
-
- $consumer->add_attribute($attr_name => $role->get_attribute($attr_name));
- }
- return;
-}
-
-sub _apply_modifiers{
- #my($role, $consumer, $args) = @_;
- my($role, $consumer) = @_;
-
-
- if(my $modifiers = $role->{override_method_modifiers}){
- foreach my $method_name (keys %{$modifiers}){
- $consumer->add_override_method_modifier($method_name => $modifiers->{$method_name});
- }
- }
-
- for my $modifier_type (qw/before around after/) {
- my $table = $role->{"${modifier_type}_method_modifiers"}
- or next;
-
- my $add_modifier = "add_${modifier_type}_method_modifier";
-
- while(my($method_name, $modifiers) = each %{$table}){
- foreach my $code(@{ $modifiers }){
- next if $consumer->{"_applied_$modifier_type"}{$method_name, $code}++; # skip applied modifiers
- $consumer->$add_modifier($method_name => $code);
- }
- }
- }
- return;
-}
-
-sub _append_roles{
- #my($role, $consumer, $args) = @_;
- my($role, $consumer) = @_;
-
- my $roles = $consumer->{roles};
-
- foreach my $r($role, @{$role->get_roles}){
- if(!$consumer->does_role($r)){
- push @{$roles}, $r;
- }
- }
- return;
-}
# Moose uses Application::ToInstance, Application::ToClass, Application::ToRole
sub apply {
my $self = shift;
my $consumer = shift;
- my %args = (@_ == 1) ? %{ $_[0] } : @_;
-
- my $instance;
-
- if(Mouse::Util::is_a_metaclass($consumer)){ # Application::ToClass
- $args{_to} = 'class';
- }
- elsif(Mouse::Util::is_a_metarole($consumer)){ # Application::ToRole
- $args{_to} = 'role';
- }
- else{ # Appplication::ToInstance
- $args{_to} = 'instance';
- $instance = $consumer;
-
- $consumer = (Mouse::Util::class_of($instance) || 'Mouse::Meta::Class')->create_anon_class(
- superclasses => [ref $instance],
- cache => 1,
- );
- }
-
- if($args{alias} && !exists $args{-alias}){
- $args{-alias} = $args{alias};
- }
- if($args{excludes} && !exists $args{-excludes}){
- $args{-excludes} = $args{excludes};
- }
-
- $args{aliased_methods} = {};
- if(my $alias = $args{-alias}){
- @{$args{aliased_methods}}{ values %{$alias} } = ();
- }
-
- if(my $excludes = $args{-excludes}){
- $args{-excludes} = {}; # replace with a hash ref
- if(ref $excludes){
- %{$args{-excludes}} = (map{ $_ => undef } @{$excludes});
- }
- else{
- $args{-excludes}{$excludes} = undef;
- }
- }
-
- $self->_check_required_methods($consumer, \%args);
- $self->_apply_attributes($consumer, \%args);
- $self->_apply_methods($consumer, \%args);
- $self->_apply_modifiers($consumer, \%args);
- $self->_append_roles($consumer, \%args);
-
-
- if(defined $instance){ # Application::ToInstance
- # rebless instance
- bless $instance, $consumer->name;
- $consumer->_initialize_object($instance, $instance, 1);
- }
-
- return;
+ require 'Mouse/Meta/Role/Application.pm';
+ return Mouse::Meta::Role::Application->new(@_)->apply($self, $consumer);
}
sub combine {
my($self, @role_specs) = @_;
- require 'Mouse/Meta/Role/Composite.pm'; # we don't want to create its namespace
-
+ require 'Mouse/Meta/Role/Composite.pm';
my $composite = Mouse::Meta::Role::Composite->create_anon_role();
foreach my $role_spec (@role_specs) {
=head1 VERSION
-This document describes Mouse version 0.61
+This document describes Mouse version 0.70
+
+=head1 DESCRIPTION
+
+This class is a meta object protocol for Mouse roles,
+which is a subset of Moose::Meta:::Role.
=head1 SEE ALSO