use warnings;
use metaclass;
+use B;
use Scalar::Util 'blessed';
use Moose::Util::TypeConstraints ();
-our $VERSION = '0.62';
-$VERSION = eval $VERSION;
-our $AUTHORITY = 'cpan:STEVAN';
-
use base 'Moose::Meta::TypeConstraint';
__PACKAGE__->meta->add_attribute('class' => (
reader => 'class',
+ Class::MOP::_definition_context(),
));
+my $inliner = sub {
+ my $self = shift;
+ my $val = shift;
+
+ return 'Scalar::Util::blessed(' . $val . ')'
+ . ' && ' . $val . '->isa(' . B::perlstring($self->class) . ')';
+};
+
sub new {
my ( $class, %args ) = @_;
- $args{parent} = Moose::Util::TypeConstraints::find_type_constraint('Object');
- my $self = $class->_new(\%args);
+ $args{parent}
+ = Moose::Util::TypeConstraints::find_type_constraint('Object');
+
+ my $class_name = $args{class};
+ $args{constraint} = sub { $_[0]->isa($class_name) };
+
+ $args{inlined} = $inliner;
+
+ my $self = $class->SUPER::new( \%args );
- $self->_create_hand_optimized_type_constraint;
$self->compile_type_constraint();
return $self;
}
-sub _create_hand_optimized_type_constraint {
- my $self = shift;
- my $class = $self->class;
- $self->hand_optimized_type_constraint(
- sub {
- blessed( $_[0] ) && $_[0]->isa($class)
- }
- );
-}
-
sub parents {
my $self = shift;
return (
# if anybody thinks this problematic please discuss on IRC.
# a possible fix is to add by attr indexing to the type registry to find types of a certain property
# regardless of their name
- Moose::Util::TypeConstraints::find_type_constraint($_)
- ||
+ Moose::Util::TypeConstraints::find_type_constraint($_)
+ ||
__PACKAGE__->new( class => $_, name => "__ANON__" )
- } $self->class->meta->superclasses,
+ } Class::MOP::class_of($self->class)->superclasses,
);
}
my $other = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
- return unless defined $other;
+ if (!defined($other)) {
+ if (!ref($type_or_name)) {
+ return $self->class eq $type_or_name;
+ }
+ return;
+ }
+
return unless $other->isa(__PACKAGE__);
return $self->class eq $other->class;
sub is_a_type_of {
my ($self, $type_or_name) = @_;
- my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
-
- ($self->equals($type) || $self->is_subtype_of($type_or_name));
+ ($self->equals($type_or_name) || $self->is_subtype_of($type_or_name));
}
sub is_subtype_of {
my ($self, $type_or_name_or_class ) = @_;
- if ( not ref $type_or_name_or_class ) {
- # it might be a class
- return 1 if $self->class->isa( $type_or_name_or_class );
- }
-
my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name_or_class);
-
- return unless defined $type;
- if ( $type->isa(__PACKAGE__) ) {
+ if ( not defined $type ) {
+ if ( not ref $type_or_name_or_class ) {
+ # it might be a class
+ my $class = $self->class;
+ return 1 if $class ne $type_or_name_or_class
+ && $class->isa( $type_or_name_or_class );
+ }
+ return;
+ }
+
+ if ( $type->isa(__PACKAGE__) && $type->class ne $self->class) {
# if $type_or_name_or_class isn't a class, it might be the TC name of another ::Class type
# or it could also just be a type object in this branch
return $self->class->isa( $type->class );
return Moose::Meta::TypeConstraint->new(@args, parent => $self);
}
+sub get_message {
+ my $self = shift;
+ my ($value) = @_;
+
+ if ($self->has_message) {
+ return $self->SUPER::get_message(@_);
+ }
+
+ $value = (defined $value ? overload::StrVal($value) : 'undef');
+ return "Validation failed for '" . $self->name . "' with value $value (not isa " . $self->class . ")";
+}
+
1;
+# ABSTRACT: Class/TypeConstraint parallel hierarchy
+
__END__
=pod
-=head1 NAME
+=head1 DESCRIPTION
+
+This class represents type constraints for a class.
-Moose::Meta::TypeConstraint::Class - Class/TypeConstraint parallel hierarchy
+=head1 INHERITANCE
+
+C<Moose::Meta::TypeConstraint::Class> is a subclass of
+L<Moose::Meta::TypeConstraint>.
=head1 METHODS
=over 4
-=item B<new>
-
-=item B<class>
+=item B<< Moose::Meta::TypeConstraint::Class->new(%options) >>
-=item B<hand_optimized_type_constraint>
+This creates a new class type constraint based on the given
+C<%options>.
-=item B<has_hand_optimized_type_constraint>
+It takes the same options as its parent, with two exceptions. First,
+it requires an additional option, C<class>, which is name of the
+constraint's class. Second, it automatically sets the parent to the
+C<Object> type.
-=item B<equals>
+The constructor also overrides the hand optimized type constraint with
+one it creates internally.
-=item B<is_a_type_of>
+=item B<< $constraint->class >>
-=item B<is_subtype_of>
+Returns the class name associated with the constraint.
-=item B<parents>
+=item B<< $constraint->parents >>
-Return all the parent types, corresponding to the parent classes.
+Returns all the type's parent types, corresponding to its parent
+classes.
-=item B<meta>
+=item B<< $constraint->is_subtype_of($type_name_or_object) >>
-=item B<create_child_type>
+If the given type is also a class type, then this checks that the
+type's class is a subclass of the other type's class.
-=back
+Otherwise it falls back to the implementation in
+L<Moose::Meta::TypeConstraint>.
-=head1 BUGS
+=item B<< $constraint->create_child_type(%options) >>
-All complex software has bugs lurking in it, and this module is no
-exception. If you find a bug please either email me, or add the bug
-to cpan-RT.
+This returns a new L<Moose::Meta::TypeConstraint> object with the type
+as its parent.
-=head1 AUTHOR
+Note that it does I<not> return a
+C<Moose::Meta::TypeConstraint::Class> object!
-Yuval Kogman E<lt>nothingmuch@cpan.orgE<gt>
+=item B<< $constraint->get_message($value) >>
-=head1 COPYRIGHT AND LICENSE
+This is the same as L<Moose::Meta::TypeConstraint/get_message> except
+that it explicitly says C<isa> was checked. This is to help users deal
+with accidentally autovivified type constraints.
-Copyright 2006-2008 by Infinity Interactive, Inc.
+=back
-L<http://www.iinteractive.com>
+=head1 BUGS
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
+See L<Moose/BUGS> for details on reporting bugs.
=cut