1 package Moose::Meta::TypeConstraint::Class;
7 use Scalar::Util 'blessed';
8 use Moose::Util::TypeConstraints ();
10 our $VERSION = '0.71_01';
11 $VERSION = eval $VERSION;
12 our $AUTHORITY = 'cpan:STEVAN';
14 use base 'Moose::Meta::TypeConstraint';
16 __PACKAGE__->meta->add_attribute('class' => (
21 my ( $class, %args ) = @_;
23 $args{parent} = Moose::Util::TypeConstraints::find_type_constraint('Object');
24 my $self = $class->_new(\%args);
26 $self->_create_hand_optimized_type_constraint;
27 $self->compile_type_constraint();
32 sub _create_hand_optimized_type_constraint {
34 my $class = $self->class;
35 $self->hand_optimized_type_constraint(
37 blessed( $_[0] ) && $_[0]->isa($class)
47 # FIXME find_type_constraint might find a TC named after the class but that isn't really it
48 # I did this anyway since it's a convention that preceded TypeConstraint::Class, and it should DWIM
49 # if anybody thinks this problematic please discuss on IRC.
50 # a possible fix is to add by attr indexing to the type registry to find types of a certain property
51 # regardless of their name
52 Moose::Util::TypeConstraints::find_type_constraint($_)
54 __PACKAGE__->new( class => $_, name => "__ANON__" )
55 } $self->class->meta->superclasses,
60 my ( $self, $type_or_name ) = @_;
62 my $other = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
64 return unless defined $other;
65 return unless $other->isa(__PACKAGE__);
67 return $self->class eq $other->class;
71 my ($self, $type_or_name) = @_;
73 my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
75 ($self->equals($type) || $self->is_subtype_of($type_or_name));
79 my ($self, $type_or_name_or_class ) = @_;
81 if ( not ref $type_or_name_or_class ) {
83 return 1 if $self->class->isa( $type_or_name_or_class );
86 my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name_or_class);
88 return unless defined $type;
90 if ( $type->isa(__PACKAGE__) ) {
91 # if $type_or_name_or_class isn't a class, it might be the TC name of another ::Class type
92 # or it could also just be a type object in this branch
93 return $self->class->isa( $type->class );
95 # the only other thing we are a subtype of is Object
96 $self->SUPER::is_subtype_of($type);
100 # This is a bit counter-intuitive, but a child type of a Class type
101 # constraint is not itself a Class type constraint (it has no class
102 # attribute). This whole create_child_type thing needs some changing
103 # though, probably making MMC->new a factory or something.
104 sub create_child_type {
105 my ($self, @args) = @_;
106 return Moose::Meta::TypeConstraint->new(@args, parent => $self);
117 Moose::Meta::TypeConstraint::Class - Class/TypeConstraint parallel hierarchy
127 =item B<hand_optimized_type_constraint>
129 =item B<has_hand_optimized_type_constraint>
133 =item B<is_a_type_of>
135 =item B<is_subtype_of>
139 Return all the parent types, corresponding to the parent classes.
143 =item B<create_child_type>
149 All complex software has bugs lurking in it, and this module is no
150 exception. If you find a bug please either email me, or add the bug
155 Yuval Kogman E<lt>nothingmuch@cpan.orgE<gt>
157 =head1 COPYRIGHT AND LICENSE
159 Copyright 2006-2009 by Infinity Interactive, Inc.
161 L<http://www.iinteractive.com>
163 This library is free software; you can redistribute it and/or modify
164 it under the same terms as Perl itself.