-#!/usr/bin/env perl
package Mouse::Meta::Role;
use strict;
use warnings;
use Carp 'confess';
+use Mouse::Util;
do {
my %METACLASS_CACHE;
$args{attributes} ||= {};
$args{required_methods} ||= [];
+ $args{roles} ||= [];
bless \%args, $class;
}
no strict 'refs';
# Get all the CODE symbol table entries
- my @functions = grep !/^meta$/,
- grep { /\A[^\W\d]\w*\z/o }
+ my @functions =
+ grep !/^(?:has|with|around|before|after|blessed|extends|confess|excludes|meta|requires)$/,
grep { defined &{"${name}::$_"} }
keys %{"${name}::"};
wantarray ? @functions : \@functions;
my $selfname = $self->name;
my $class = shift;
my $classname = $class->name;
+ my %args = @_;
- for my $name (@{$self->{required_methods}}) {
- unless ($classname->can($name)) {
- confess "'$selfname' requires the method '$name' to be implemented by '$classname'";
+ if ($class->isa('Mouse::Meta::Class')) {
+ for my $name (@{$self->{required_methods}}) {
+ unless ($classname->can($name)) {
+ confess "'$selfname' requires the method '$name' to be implemented by '$classname'";
+ }
}
}
{
no strict 'refs';
for my $name ($self->get_method_list) {
- next if $name eq 'has' || $name eq 'requires' || $name eq 'meta' || $name eq 'with' || $name eq 'around' || $name eq 'before' || $name eq 'after' || $name eq 'blessed' || $name eq 'extends' || $name eq 'confess' || $name eq 'excludes';
+ next if $name eq 'meta';
+
if ($classname->can($name)) {
# XXX what's Moose's behavior?
- next;
+ #next;
+ } else {
+ *{"${classname}::${name}"} = *{"${selfname}::${name}"};
+ }
+ if ($args{alias} && $args{alias}->{$name}) {
+ my $dstname = $args{alias}->{$name};
+ unless ($classname->can($dstname)) {
+ *{"${classname}::${dstname}"} = *{"${selfname}::${name}"};
+ }
}
- *{"${classname}::${name}"} = *{"${selfname}::${name}"};
}
}
- for my $name ($self->get_attribute_list) {
- next if $class->has_attribute($name);
- my $spec = $self->get_attribute($name);
- Mouse::Meta::Attribute->create($class, $name, %$spec);
+ if ($class->isa('Mouse::Meta::Class')) {
+ # apply role to class
+ for my $name ($self->get_attribute_list) {
+ next if $class->has_attribute($name);
+ my $spec = $self->get_attribute($name);
+
+ my $metaclass = 'Mouse::Meta::Attribute';
+ if ( my $metaclass_name = $spec->{metaclass} ) {
+ my $new_class = Mouse::Util::resolve_metaclass_alias(
+ 'Attribute',
+ $metaclass_name
+ );
+ if ( $metaclass ne $new_class ) {
+ $metaclass = $new_class;
+ }
+ }
+
+ $metaclass->create($class, $name, %$spec);
+ }
+ } else {
+ # apply role to role
+ # XXX Room for speed improvement
+ for my $name ($self->get_attribute_list) {
+ next if $class->has_attribute($name);
+ my $spec = $self->get_attribute($name);
+ $class->add_attribute($name, $spec);
+ }
}
+ # XXX Room for speed improvement in role to role
for my $modifier_type (qw/before after around/) {
my $add_method = "add_${modifier_type}_method_modifier";
my $modified = $self->{"${modifier_type}_method_modifiers"};
}
}
}
+
+ # append roles
+ push @{ $class->roles }, $self, @{ $self->roles };
+}
+
+sub combine_apply {
+ my(undef, $class, @roles) = @_;
+ my $classname = $class->name;
+
+ if ($class->isa('Mouse::Meta::Class')) {
+ for my $role_spec (@roles) {
+ my $self = $role_spec->[0]->meta;
+ for my $name (@{$self->{required_methods}}) {
+ unless ($classname->can($name)) {
+ my $method_required = 0;
+ for my $role (@roles) {
+ $method_required = 1 if $self->name ne $role->[0] && $role->[0]->can($name);
+ }
+ confess "'".$self->name."' requires the method '$name' to be implemented by '$classname'"
+ unless $method_required;
+ }
+ }
+ }
+ }
+
+ {
+ no strict 'refs';
+ for my $role_spec (@roles) {
+ my $self = $role_spec->[0]->meta;
+ my $selfname = $self->name;
+ my %args = %{ $role_spec->[1] };
+ for my $name ($self->get_method_list) {
+ next if $name eq 'meta';
+
+ if ($classname->can($name)) {
+ # XXX what's Moose's behavior?
+ #next;
+ } else {
+ *{"${classname}::${name}"} = *{"${selfname}::${name}"};
+ }
+ if ($args{alias} && $args{alias}->{$name}) {
+ my $dstname = $args{alias}->{$name};
+ unless ($classname->can($dstname)) {
+ *{"${classname}::${dstname}"} = *{"${selfname}::${name}"};
+ }
+ }
+ }
+ }
+ }
+
+
+ if ($class->isa('Mouse::Meta::Class')) {
+ # apply role to class
+ for my $role_spec (@roles) {
+ my $self = $role_spec->[0]->meta;
+ for my $name ($self->get_attribute_list) {
+ next if $class->has_attribute($name);
+ my $spec = $self->get_attribute($name);
+
+ my $metaclass = 'Mouse::Meta::Attribute';
+ if ( my $metaclass_name = $spec->{metaclass} ) {
+ my $new_class = Mouse::Util::resolve_metaclass_alias(
+ 'Attribute',
+ $metaclass_name
+ );
+ if ( $metaclass ne $new_class ) {
+ $metaclass = $new_class;
+ }
+ }
+
+ $metaclass->create($class, $name, %$spec);
+ }
+ }
+ } else {
+ # apply role to role
+ # XXX Room for speed improvement
+ for my $role_spec (@roles) {
+ my $self = $role_spec->[0]->meta;
+ for my $name ($self->get_attribute_list) {
+ next if $class->has_attribute($name);
+ my $spec = $self->get_attribute($name);
+ $class->add_attribute($name, $spec);
+ }
+ }
+ }
+
+ # XXX Room for speed improvement in role to role
+ for my $modifier_type (qw/before after around/) {
+ my $add_method = "add_${modifier_type}_method_modifier";
+ for my $role_spec (@roles) {
+ my $self = $role_spec->[0]->meta;
+ my $modified = $self->{"${modifier_type}_method_modifiers"};
+
+ for my $method_name (keys %$modified) {
+ for my $code (@{ $modified->{$method_name} }) {
+ $class->$add_method($method_name => $code);
+ }
+ }
+ }
+ }
+
+ # append roles
+ my %role_apply_cache;
+ my @apply_roles;
+ for my $role_spec (@roles) {
+ my $self = $role_spec->[0]->meta;
+ push @apply_roles, $self unless $role_apply_cache{$self}++;
+ for my $role ($self->roles) {
+ push @apply_roles, $role unless $role_apply_cache{$role}++;
+ }
+ }
}
for my $modifier_type (qw/before after around/) {
};
}
+sub roles { $_[0]->{roles} }
+
1;
projects / gitmo/Mouse.git / blobdiff