1 package Moose::Meta::TypeConstraint::Class;
7 use Scalar::Util 'blessed';
8 use Moose::Util::TypeConstraints ();
10 our $VERSION = '0.01';
11 our $AUTHORITY = 'cpan:STEVAN';
13 use base 'Moose::Meta::TypeConstraint';
15 __PACKAGE__->meta->add_attribute('class' => (
20 my ( $class, %args ) = @_;
22 $args{class} = $args{name} unless exists $args{class};
24 $args{parent} = Moose::Util::TypeConstraints::find_type_constraint('Object');
26 my $self = $class->meta->new_object(%args);
28 $self->_create_hand_optimized_type_constraint;
30 $self->compile_type_constraint();
35 sub _create_hand_optimized_type_constraint {
37 my $class = $self->class;
38 $self->hand_optimized_type_constraint(sub { blessed( $_[0] ) && $_[0]->isa($class) });
46 # FIXME find_type_constraint might find a TC named after the class but that isn't really it
47 # I did this anyway since it's a convention that preceded TypeConstraint::Class, and it should DWIM
48 # if anybody thinks this problematic please discuss on IRC.
49 # a possible fix is to add by attr indexing to the type registry to find types of a certain property
50 # regardless of their name
51 Moose::Util::TypeConstraints::find_type_constraint($_) || __PACKAGE__->new( name => $_ )
52 } $self->class->meta->superclasses,
57 my ( $self, $type_or_name ) = @_;
59 my $other = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
61 return unless $other->isa(__PACKAGE__);
63 return $self->class eq $other->class;
67 my ($self, $type_or_name) = @_;
69 my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
71 ($self->equals($type) || $self->is_subtype_of($type_or_name));
75 my ($self, $type_or_name_or_class ) = @_;
77 if ( not ref $type_or_name_or_class ) {
79 return 1 if $self->class->isa( $type_or_name_or_class );
82 my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name_or_class);
84 if ( $type->isa(__PACKAGE__) ) {
85 # if $type_or_name_or_class isn't a class, it might be the TC name of another ::Class type
86 # or it could also just be a type object in this branch
87 return $self->class->isa( $type->class );
89 # the only other thing we are a subtype of is Object
90 $self->SUPER::is_subtype_of($type);
102 Moose::Meta::TypeConstraint::Class - Class/TypeConstraint parallel hierarchy
110 =item B<hand_optimized_type_constraint>
112 =item B<has_hand_optimized_type_constraint>
116 =item B<is_a_type_of>
118 =item B<is_subtype_of>
122 Return all the parent types, corresponding to the parent classes.
130 All complex software has bugs lurking in it, and this module is no
131 exception. If you find a bug please either email me, or add the bug
136 Yuval Kogman E<lt>nothingmuch@cpan.orgE<gt>
138 =head1 COPYRIGHT AND LICENSE
140 Copyright 2006-2008 by Infinity Interactive, Inc.
142 L<http://www.iinteractive.com>
144 This library is free software; you can redistribute it and/or modify
145 it under the same terms as Perl itself.