Add calculate_all_roles() to Meta::Class/Meta::Role

[gitmo/Mouse.git] / lib / Mouse / Meta / Role.pm

diff --git a/lib/Mouse/Meta/Role.pm b/lib/Mouse/Meta/Role.pm
index 9c56aab..d8d4053 100644 (file)
--- a/lib/Mouse/Meta/Role.pm
+++ b/lib/Mouse/Meta/Role.pm
@@ -35,6 +35,13 @@ sub is_anon_role{
 
 sub get_roles { $_[0]->{roles} }
 
+sub calculate_all_roles {
+    my $self = shift;
+    my %seen;
+    return grep { !$seen{ $_->name }++ }
+           ($self, map  { $_->calculate_all_roles } @{ $self->get_roles });
+}
+
 sub get_required_method_list{
     return @{ $_[0]->{required_methods} };
 }