Work in progress to make Moose accept Type::Constraint objects for the isa param

I have tests in the Type distro, but none in Moose. I still need to make this
work with does as well.

diff --git a/lib/Moose/Meta/Attribute.pm b/lib/Moose/Meta/Attribute.pm
index 46a8412..c126884 100644 (file)
--- a/lib/Moose/Meta/Attribute.pm
+++ b/lib/Moose/Meta/Attribute.pm
@@ -231,12 +231,14 @@ sub clone_and_inherit_options {
         if (blessed($options{isa}) && $options{isa}->isa('Moose::Meta::TypeConstraint')) {
             $type_constraint = $options{isa};
         }
+        elsif (blessed($options{isa}) && Moose::Util::does_role($options{isa}, 'Type::Constraint::Role::Interface')) {
+            $type_constraint = $options{isa};
+        }
         else {
             $type_constraint = Moose::Util::TypeConstraints::find_or_create_isa_type_constraint($options{isa}, { package_defined_in => $options{definition_context}->{package} });
             (defined $type_constraint)
                 || $self->throw_error("Could not find the type constraint '" . $options{isa} . "'", data => $options{isa});
         }
-
         $options{type_constraint} = $type_constraint;
     }
 
@@ -374,6 +376,14 @@ sub _process_isa_option {
         && $options->{isa}->isa('Moose::Meta::TypeConstraint') ) {
         $options->{type_constraint} = $options->{isa};
     }
+    elsif (
+        blessed( $options->{isa} )
+        && Moose::Util::does_role(
+            $options->{isa}, 'Type::Constraint::Role::Interface'
+        )
+        ) {
+        $options->{type_constraint} = $options->{isa};
+    }
     else {
         $options->{type_constraint}
             = Moose::Util::TypeConstraints::find_or_create_isa_type_constraint(