NAME
Perl6Attribute - An example attribute metaclass for Perl 6 style attributes
SYNOPSIS
package
Foo;
Foo->meta->add_attribute(Perl6Attribute->new(
'$.foo'
));
Foo->meta->add_attribute(Perl6Attribute->new(
'@.bar'
));
Foo->meta->add_attribute(Perl6Attribute->new(
'%.baz'
));
sub
new {
my
$class
=
shift
;
$class
->meta->new_object(
@_
);
}
DESCRIPTION
This is an attribute metaclass which implements Perl 6 style attributes, including the auto-generating accessors.
This code is very simple, we only need to subclass Class::MOP::Attribute
and override &new
. Then we just pre-process the attribute name, and create the accessor name and default value based on it.
More advanced features like the handles
trait (see "A12" in Perl6::Bible) can be accomplished as well doing the same pre-processing approach. This is left as an exercise to the reader though (if you do it, please send me a patch though, and will update this).
AUTHORS
Stevan Little <stevan@iinteractive.com>
Yuval Kogman <nothingmuch@woobling.com>
COPYRIGHT AND LICENSE
Copyright 2006-2008 by Infinity Interactive, Inc.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.