return if $INFO{$target}; # already exported into this package
# get symbol table reference
my $stash = do { no strict 'refs'; \%{"${target}::"} };
- *{_getglob "${target}::has"} = sub {
+ _install_coderef "${target}::has" => sub {
my ($name, %spec) = @_;
($INFO{$target}{accessor_maker} ||= do {
require Method::Generate::Accessor;
Method::Generate::Accessor->new
})->generate_method($target, $name, \%spec);
- $INFO{$target}{attributes}{$name} = \%spec;
+ push @{$INFO{$target}{attributes}||=[]}, $name, \%spec;
};
+ if ($INC{'Moo/HandleMoose.pm'}) {
+ Moo::HandleMoose::inject_fake_metaclass_for($target);
+ }
goto &Role::Tiny::import;
}
-sub apply_role_to_package {
- my ($me, $role, $to) = @_;
- $me->SUPER::apply_role_to_package($role, $to);
+sub _inhale_if_moose {
+ my ($self, $role) = @_;
+ _load_module($role);
+ if (!$INFO{$role} and $INC{"Moose.pm"}) {
+ if (my $meta = Class::MOP::class_of($role)) {
+ $INFO{$role}{methods} = {
+ map +($_ => $role->can($_)), $meta->get_method_list
+ };
+ $Role::Tiny::APPLIED_TO{$role} = {
+ map +($_->name => 1), $meta->calculate_all_roles
+ };
+ $INFO{$role}{requires} = [ $meta->get_required_method_list ];
+ $INFO{$role}{attributes} = [
+ map +($_ => $meta->get_attribute($_)), $meta->get_attribute_list
+ ];
+ my $mods = $INFO{$role}{modifiers} = [];
+ foreach my $type (qw(before after around)) {
+ my $map = $meta->${\"get_${type}_method_modifiers_map"};
+ foreach my $method (keys %$map) {
+ foreach my $mod (@{$map->{$method}}) {
+ push @$mods, [ $type => $method => $mod ];
+ }
+ }
+ }
+ require Class::Method::Modifiers if @$mods;
+ $INFO{$role}{inhaled_from_moose} = 1;
+ }
+ }
+}
+
+sub _maybe_make_accessors {
+ my ($self, $role, $target) = @_;
+ my $m;
+ if ($INFO{$role}{inhaled_from_moose}
+ or $m = Moo->_accessor_maker_for($target)
+ and ref($m) ne 'Method::Generate::Accessor') {
+ $self->_make_accessors($role, $target);
+ }
+}
+
+sub _make_accessors_if_moose {
+ my ($self, $role, $target) = @_;
+ if ($INFO{$role}{inhaled_from_moose}) {
+ $self->_make_accessors($role, $target);
+ }
+}
+
+sub _make_accessors {
+ my ($self, $role, $target) = @_;
+ my $acc_gen = ($Moo::MAKERS{$target}{accessor} ||= do {
+ require Method::Generate::Accessor;
+ Method::Generate::Accessor->new
+ });
+ my @attrs = @{$INFO{$role}{attributes}||[]};
+ while (my ($name, $spec) = splice @attrs, 0, 2) {
+ $acc_gen->generate_method($target, $name, $spec);
+ }
+}
+
+sub apply_single_role_to_package {
+ my ($me, $to, $role) = @_;
+ $me->_inhale_if_moose($role);
$me->_handle_constructor($to, $INFO{$role}{attributes});
+ $me->_maybe_make_accessors($role, $to);
+ $me->SUPER::apply_single_role_to_package($to, $role);
}
sub create_class_with_roles {
my ($me, $superclass, @roles) = @_;
- my $new_name = join('+', $superclass, my $compose_name = join '+', @roles);
+ my $new_name = join(
+ '__WITH__', $superclass, my $compose_name = join '__AND__', @roles
+ );
+
return $new_name if $Role::Tiny::COMPOSED{class}{$new_name};
+ $me->_inhale_if_moose($_) for @roles;
+
require Sub::Quote;
$me->SUPER::create_class_with_roles($superclass, @roles);
die "${role} is not a Role::Tiny" unless my $info = $INFO{$role};
}
+ $Moo::MAKERS{$new_name} = {};
+
$me->_handle_constructor(
- $new_name, { map %{$INFO{$_}{attributes}||{}}, @roles }
+ $new_name, [ map @{$INFO{$_}{attributes}||[]}, @roles ], $superclass
);
return $new_name;
}
+sub _composable_package_for {
+ my ($self, $role) = @_;
+ my $composed_name = 'Role::Tiny::_COMPOSABLE::'.$role;
+ return $composed_name if $Role::Tiny::COMPOSED{role}{$composed_name};
+ $self->_make_accessors_if_moose($role, $composed_name);
+ $self->SUPER::_composable_package_for($role);
+}
+
sub _install_single_modifier {
my ($me, @args) = @_;
_install_modifier(@args);
}
sub _handle_constructor {
- my ($me, $to, $attr_info) = @_;
- return unless $attr_info && keys %$attr_info;
+ my ($me, $to, $attr_info, $superclass) = @_;
+ return unless $attr_info && @$attr_info;
if ($INFO{$to}) {
- @{$INFO{$to}{attributes}||={}}{keys %$attr_info} = values %$attr_info;
+ push @{$INFO{$to}{attributes}||=[]}, @$attr_info;
} else {
# only fiddle with the constructor if the target is a Moo class
if ($INC{"Moo.pm"}
- and my $con = Moo->_constructor_maker_for($to)) {
- $con->register_attribute_specs(%$attr_info);
+ and my $con = Moo->_constructor_maker_for($to, $superclass)) {
+ # shallow copy of the specs since the constructor will assign an index
+ $con->register_attribute_specs(map ref() ? { %$_ } : $_, @$attr_info);
}
}
}
1;
+
+=head1 NAME
+
+Moo::Role - Minimal Object Orientation support for Roles
+
+=head1 SYNOPSIS
+
+ package My::Role;
+
+ use Moo::Role;
+
+ sub foo { ... }
+
+ sub bar { ... }
+
+ has baz => (
+ is => 'ro',
+ );
+
+ 1;
+
+else where
+
+ package Some::Class;
+
+ use Moo;
+
+ # bar gets imported, but not foo
+ with('My::Role');
+
+ sub foo { ... }
+
+ 1;
+
+=head1 DESCRIPTION
+
+C<Moo::Role> builds upon L<Role::Tiny>, so look there for most of the
+documentation on how this works. The main addition here is extra bits to make
+the roles more "Moosey;" which is to say, it adds L</has>.
+
+=head1 IMPORTED SUBROUTINES
+
+See L<Role::Tiny/IMPORTED SUBROUTINES> for all the other subroutines that are
+imported by this module.
+
+=head2 has
+
+ has attr => (
+ is => 'ro',
+ );
+
+Declares an attribute for the class to be composed into. See
+L<Moo/has> for all options.
+
+=head1 AUTHORS
+
+See L<Moo> for authors.
+
+=head1 COPYRIGHT AND LICENSE
+
+See L<Moo> for the copyright and license.
+
+=cut
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