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|
package Class::MOP::Object;
our $VERSION = '2.4000';
use strict;
use warnings;
use parent 'Class::MOP::Mixin';
use Scalar::Util 'blessed';
use Module::Runtime;
# introspection
sub throw_error {
shift->_throw_exception( Legacy => message => join('', @_) );
}
sub _inline_throw_error {
my ( $self, $message ) = @_;
return 'die Module::Runtime::use_module("Moose::Exception::Legacy")->new(message => ' . $message. ')';
}
sub _new {
Class::MOP::class_of(shift)->new_object(@_);
}
# RANT:
# Cmon, how many times have you written
# the following code while debugging:
#
# use Data::Dumper;
# warn Dumper $obj;
#
# It can get seriously annoying, so why
# not just do this ...
sub dump {
my $self = shift;
require Data::Dumper;
local $Data::Dumper::Maxdepth = shift || 1;
Data::Dumper::Dumper $self;
}
sub _real_ref_name {
my $self = shift;
return blessed($self);
}
sub _is_compatible_with {
my $self = shift;
my ($other_name) = @_;
return $self->isa($other_name);
}
sub _can_be_made_compatible_with {
my $self = shift;
return !$self->_is_compatible_with(@_)
&& defined($self->_get_compatible_metaclass(@_));
}
sub _make_compatible_with {
my $self = shift;
my ($other_name) = @_;
my $new_metaclass = $self->_get_compatible_metaclass($other_name);
unless ( defined $new_metaclass ) {
$self->_throw_exception( CannotMakeMetaclassCompatible => superclass_name => $other_name,
class => $self,
);
}
# can't use rebless_instance here, because it might not be an actual
# subclass in the case of, e.g. moose role reconciliation
$new_metaclass->meta->_force_rebless_instance($self)
if blessed($self) ne $new_metaclass;
return $self;
}
sub _get_compatible_metaclass {
my $self = shift;
my ($other_name) = @_;
return $self->_get_compatible_metaclass_by_subclassing($other_name);
}
sub _get_compatible_metaclass_by_subclassing {
my $self = shift;
my ($other_name) = @_;
my $meta_name = blessed($self) ? $self->_real_ref_name : $self;
if ($meta_name->isa($other_name)) {
return $meta_name;
}
elsif ($other_name->isa($meta_name)) {
return $other_name;
}
return;
}
1;
# ABSTRACT: Base class for metaclasses
__END__
=pod
=encoding UTF-8
=head1 NAME
Class::MOP::Object - Base class for metaclasses
=head1 VERSION
version 2.4000
=head1 DESCRIPTION
This class is a very minimal base class for metaclasses.
=head1 METHODS
This class provides a few methods which are useful in all metaclasses.
=head2 Class::MOP::???->meta
This returns a L<Class::MOP::Class> object.
=head2 $metaobject->dump($max_depth)
This method uses L<Data::Dumper> to dump the object. You can pass an
optional maximum depth, which will set C<$Data::Dumper::Maxdepth>. The
default maximum depth is 1.
=head2 $metaclass->throw_error($message)
This method calls L<Class::MOP::Mixin/_throw_exception> internally, with an object
of class L<Moose::Exception::Legacy>.
=head1 AUTHORS
=over 4
=item *
Stevan Little <stevan@cpan.org>
=item *
Dave Rolsky <autarch@urth.org>
=item *
Jesse Luehrs <doy@cpan.org>
=item *
Shawn M Moore <sartak@cpan.org>
=item *
יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
=item *
Karen Etheridge <ether@cpan.org>
=item *
Florian Ragwitz <rafl@debian.org>
=item *
Hans Dieter Pearcey <hdp@cpan.org>
=item *
Chris Prather <chris@prather.org>
=item *
Matt S Trout <mstrout@cpan.org>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2006 by Infinity Interactive, Inc.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
