1 package MooseX::ClassAttribute;
7 our $AUTHORITY = 'cpan:DROLSKY';
11 use MooseX::ClassAttribute::Role::Meta::Class;
13 Moose::Exporter->setup_import_methods
14 ( with_caller => [ 'class_has' ] );
25 Moose::Util::MetaRole::apply_metaclass_roles
26 ( for_class => $p{for_class},
27 metaclass_roles => [ 'MooseX::ClassAttribute::Role::Meta::Class' ],
37 my $attrs = ref $name eq 'ARRAY' ? $name : [$name];
41 ->add_class_attribute( $_, %options )
53 MooseX::ClassAttribute - Declare class attributes Moose-style
60 use MooseX::ClassAttribute;
65 default => sub { {} },
68 __PACKAGE__->meta()->make_immutable();
71 no MooseX::ClassAttribute;
75 My::Class->Cache()->{thing} = ...;
80 This module allows you to declare class attributes in exactly the same
81 way as object attributes, using C<class_has()> instead of C<has()>.
83 You can use any feature of Moose's attribute declarations, including
84 overriding a parent's attributes, delegation (C<handles>), and
85 attribute metaclasses, and it should just work. The one exception is
86 the "required" flag, which is not allowed for class attributes.
88 The accessor methods for class attribute may be called on the class
89 directly, or on objects of that class. Passing a class attribute to
90 the constructor will not set it.
94 This class exports one function when you use it, C<class_has()>. This
95 works exactly like Moose's C<has()>, but it declares class attributes.
97 One little nit is that if you include C<no Moose> in your class, you
98 won't remove the C<class_has()> function. To do that you must include
99 C<no MooseX::ClassAttribute> as well.
101 =head2 Implementation and Immutability
103 This module will add a role to your class's metaclass, See
104 L<MooseX::ClassAttribute::Role::Meta::Class> for details. This role
105 provides introspection methods for class attributes.
107 Class attributes themselves do the
108 L<MooseX::ClassAttribute::Role::Meta::Attribute> role.
110 There is also a L<MooseX::ClassAttribute::Meta::Method::Accessor>
111 which provides part of the inlining implementation for class
114 =head2 Cooperation with Metaclasses and Traits
116 This module should work with most attribute metaclasses and traits,
117 but it's possible that conflicts could occur. This module has been
118 tested to work with C<MooseX::AttributeHelpers>.
122 If you'd like to thank me for the work I've done on this module,
123 please consider making a "donation" to me via PayPal. I spend a lot of
124 free time creating free software, and would appreciate any support
127 Please note that B<I am not suggesting that you must do this> in order
128 for me to continue working on this particular software. I will
129 continue to do so, inasmuch as I have in the past, for as long as it
132 Similarly, a donation made in this way will probably not make me work
133 on this software much more, unless I get so many donations that I can
134 consider working on free software full time, which seems unlikely at
137 To donate, log into PayPal and send money to autarch@urth.org or use
138 the button on this page:
139 L<http://www.urth.org/~autarch/fs-donation.html>
143 Dave Rolsky, C<< <autarch@urth.org> >>
147 Please report any bugs or feature requests to
148 C<bug-moosex-classattribute@rt.cpan.org>, or through the web interface
149 at L<http://rt.cpan.org>. I will be notified, and then you'll
150 automatically be notified of progress on your bug as I make changes.
152 =head1 COPYRIGHT & LICENSE
154 Copyright 2007-2008 Dave Rolsky, All Rights Reserved.
156 This program is free software; you can redistribute it and/or modify
157 it under the same terms as Perl itself.