#line 1
package Class::MOP::Mixin::HasAttributes;
BEGIN {
$Class::MOP::Mixin::HasAttributes::AUTHORITY = 'cpan:STEVAN';
}
BEGIN {
$Class::MOP::Mixin::HasAttributes::VERSION = '2.0009';
}
use strict;
use warnings;
use Carp 'confess';
use Scalar::Util 'blessed';
use base 'Class::MOP::Mixin';
sub add_attribute {
my $self = shift;
my $attribute
= blessed( $_[0] ) ? $_[0] : $self->attribute_metaclass->new(@_);
( $attribute->isa('Class::MOP::Mixin::AttributeCore') )
|| confess
"Your attribute must be an instance of Class::MOP::Mixin::AttributeCore (or a subclass)";
$self->_attach_attribute($attribute);
my $attr_name = $attribute->name;
$self->remove_attribute($attr_name)
if $self->has_attribute($attr_name);
my $order = ( scalar keys %{ $self->_attribute_map } );
$attribute->_set_insertion_order($order);
$self->_attribute_map->{$attr_name} = $attribute;
# This method is called to allow for installing accessors. Ideally, we'd
# use method overriding, but then the subclass would be responsible for
# making the attribute, which would end up with lots of code
# duplication. Even more ideally, we'd use augment/inner, but this is
# Class::MOP!
$self->_post_add_attribute($attribute)
if $self->can('_post_add_attribute');
return $attribute;
}
sub has_attribute {
my ( $self, $attribute_name ) = @_;
( defined $attribute_name )
|| confess "You must define an attribute name";
exists $self->_attribute_map->{$attribute_name};
}
sub get_attribute {
my ( $self, $attribute_name ) = @_;
( defined $attribute_name )
|| confess "You must define an attribute name";
return $self->_attribute_map->{$attribute_name};
}
sub remove_attribute {
my ( $self, $attribute_name ) = @_;
( defined $attribute_name )
|| confess "You must define an attribute name";
my $removed_attribute = $self->_attribute_map->{$attribute_name};
return unless defined $removed_attribute;
delete $self->_attribute_map->{$attribute_name};
return $removed_attribute;
}
sub get_attribute_list {
my $self = shift;
keys %{ $self->_attribute_map };
}
sub _restore_metaattributes_from {
my $self = shift;
my ($old_meta) = @_;
for my $attr (sort { $a->insertion_order <=> $b->insertion_order }
map { $old_meta->get_attribute($_) }
$old_meta->get_attribute_list) {
$attr->_make_compatible_with($self->attribute_metaclass);
$self->add_attribute($attr);
}
}
1;
# ABSTRACT: Methods for metaclasses which have attributes
#line 132
__END__