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package Class::MOP::Mixin::AttributeCore;
use strict;
use warnings;
our $VERSION = '1.04';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
use Scalar::Util 'blessed';
use base 'Class::MOP::Mixin';
sub has_accessor { defined $_[0]->{'accessor'} }
sub has_reader { defined $_[0]->{'reader'} }
sub has_writer { defined $_[0]->{'writer'} }
sub has_predicate { defined $_[0]->{'predicate'} }
sub has_clearer { defined $_[0]->{'clearer'} }
sub has_builder { defined $_[0]->{'builder'} }
sub has_init_arg { defined $_[0]->{'init_arg'} }
sub has_default { defined $_[0]->{'default'} }
sub has_initializer { defined $_[0]->{'initializer'} }
sub has_insertion_order { defined $_[0]->{'insertion_order'} }
sub accessor { $_[0]->{'accessor'} }
sub reader { $_[0]->{'reader'} }
sub writer { $_[0]->{'writer'} }
sub predicate { $_[0]->{'predicate'} }
sub clearer { $_[0]->{'clearer'} }
sub builder { $_[0]->{'builder'} }
sub init_arg { $_[0]->{'init_arg'} }
sub initializer { $_[0]->{'initializer'} }
sub definition_context { $_[0]->{'definition_context'} }
sub insertion_order { $_[0]->{'insertion_order'} }
sub _set_insertion_order { $_[0]->{'insertion_order'} = $_[1] }
sub has_read_method { $_[0]->has_reader || $_[0]->has_accessor }
sub has_write_method { $_[0]->has_writer || $_[0]->has_accessor }
sub is_default_a_coderef {
# Uber hack because it is called from CMOP::Attribute constructor as
# $class->is_default_a_coderef(\%options)
my ($value) = ref $_[0] ? $_[0]->{'default'} : $_[1]->{'default'};
return unless ref($value);
return ref($value) eq 'CODE'
|| ( blessed($value) && $value->isa('Class::MOP::Method') );
}
sub default {
my ( $self, $instance ) = @_;
if ( defined $instance && $self->is_default_a_coderef ) {
# if the default is a CODE ref, then we pass in the instance and
# default can return a value based on that instance. Somewhat crude,
# but works.
return $self->{'default'}->($instance);
}
$self->{'default'};
}
1;
__END__
=pod
=head1 NAME
Class::MOP::Mixin::AttributeCore - Core attributes shared by attribute metaclasses
=head1 DESCRIPTION
This class implements the core attributes (aka properties) shared by all
attributes. See the L<Class::MOP::Attribute> documentation for API details.
=head1 AUTHORS
Dave Rolsky E<lt>autarch@urth.orgE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2006-2010 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
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