File Coverage

blib/lib/MOP/Util.pm

Criterion	Covered	Total	%
statement	28	36	77.7
branch	3	10	30.0
condition	3	9	33.3
subroutine	8	9	88.8
pod	4	4	100.0
total	46	68	67.6

package MOP::Util;
# ABSTRACT: For MOP External Use Only

use strict;
use warnings;

use MOP::Role;
use MOP::Class;
use MOP::Internal::Util ();

our $VERSION   = '0.12';
our $AUTHORITY = 'cpan:STEVAN';

sub get_meta {
    my ($package) = @_;

    return $package->METACLASS->new( $package )
        if $package->can('METACLASS');

    my $meta = MOP::Role->new( $package );
    my $isa  = MOP::Internal::Util::GET_GLOB_SLOT( $meta->stash, 'ISA', 'ARRAY' );

    # without inheritance, we assume it is a role ...
    return $meta
        if not defined $isa
        || (ref $isa eq 'ARRAY' && scalar @$isa == 0);

    # with inheritance, we know it is a class ....
    return MOP::Class->new( $package );
}

sub compose_roles {
    my ($meta) = @_;

    my @roles = $meta->roles;
    MOP::Internal::Util::APPLY_ROLES( $meta, \@roles ) if @roles;
    return;
}

sub inherit_slots {
    my ($meta) = @_;

    # roles don't inherit, so do nothing ...
    return unless $meta->isa('MOP::Class');

    # otherwise, inherit only the slots from
    # the direct superclasses, this assumes that
    # these superclasses have already done
    # INHERIT_SLOTS themselves.
    foreach my $super ( map { MOP::Role->new( name => $_ ) } $meta->superclasses ) {
        # remember to use all_slots so that it
        # will gives us *all* the slots, including
        # those that are themselves inherited ...
        foreach my $slot ( $super->all_slots ) {
            my $slot_name = $slot->name;
            # we always just alias this anyway ...
            $meta->alias_slot( $slot_name, $slot->initializer )
                unless $meta->has_slot( $slot_name )
                    || $meta->has_slot_alias( $slot_name );
        }
    }

    # nothing to return ...
    return;
}

sub defer_until_UNITCHECK {
    my ($cb) = @_;

    MOP::Internal::Util::ADD_UNITCHECK_HOOK( $cb );
    return;
}

1;

__END__