9 use Sub::Name 'subname';
11 our $VERSION = '0.02';
13 use Moose::Meta::Role;
19 # we should never export to main
20 return if $pkg eq 'main';
22 Moose::Util::TypeConstraints->import($pkg);
25 if ($pkg->can('meta')) {
27 (blessed($meta) && $meta->isa('Moose::Meta::Role'))
28 || confess "Whoops, not møøsey enough";
31 $meta = Moose::Meta::Role->new(role_name => $pkg);
32 $meta->_role_meta->add_method('meta' => sub { $meta })
36 # &alias_method will install the method, but it
37 # will not name it with
40 $meta->alias_method('extends' => subname 'Moose::Role::extends' => sub {
41 confess "Moose::Role does not currently support 'extends'"
45 $meta->alias_method('with' => subname 'Moose::with' => sub {
47 Moose::_load_all_classes($role);
48 $role->meta->apply($meta);
52 $meta->alias_method('has' => subname 'Moose::Role::has' => sub {
53 my ($name, %options) = @_;
54 $meta->add_attribute($name, %options)
57 # handle method modifers
58 $meta->alias_method('before' => subname 'Moose::Role::before' => sub {
60 $meta->add_before_method_modifier($_, $code) for @_;
62 $meta->alias_method('after' => subname 'Moose::Role::after' => sub {
64 $meta->add_after_method_modifier($_, $code) for @_;
66 $meta->alias_method('around' => subname 'Moose::Role::around' => sub {
68 $meta->add_around_method_modifier($_, $code) for @_;
71 $meta->alias_method('super' => subname 'Moose::Role::super' => sub {});
72 $meta->alias_method('override' => subname 'Moose::Role::override' => sub {
73 my ($name, $code) = @_;
74 $meta->add_override_method_modifier($name, $code);
77 $meta->alias_method('inner' => subname 'Moose::Role::inner' => sub {
78 confess "Moose::Role does not currently support 'inner'";
80 $meta->alias_method('augment' => subname 'Moose::Role::augment' => sub {
81 confess "Moose::Role does not currently support 'augment'";
84 # we recommend using these things
85 # so export them for them
86 $meta->alias_method('confess' => \&Carp::confess);
87 $meta->alias_method('blessed' => \&Scalar::Util::blessed);
98 Moose::Role - The Moose Role
107 sub equal { confess "equal must be implemented" }
110 my ($self, $other) = @_;
111 !$self->equal($other);
114 # ... then in your classes
124 my ($self, $other) = @_;
125 $self->as_float == $other->as_float;
130 This is currently a very early release of Perl 6 style Roles for
131 Moose, it should be considered experimental and incomplete.
133 This feature is being actively developed, but $work is currently
134 preventing me from paying as much attention to it as I would like.
135 So I am releasing it in hopes people will help me on this I<hint hint>.
137 If you are interested in helping, please come to #moose on irc.perl.org
142 Currently, the role support has a number of caveats. They are as follows:
148 There is no support for Roles consuming other Roles. The details of this
149 are not totally worked out yet, but it will mostly follow what is set out
150 in the Perl 6 Synopsis 12.
154 At this time classes I<can> consume more than one Role, but they are simply
155 applied one after another in the order you ask for them. This is incorrect
156 behavior, the roles should be merged first, and conflicts determined, etc.
157 However, if your roles do not have any conflicts, then things will work just
162 I want to have B<required> methods, which is unlike Perl 6 roles, and more
163 like the original Traits on which roles are based. This would be similar
164 in behavior to L<Class::Trait>. These are not yet implemented or course.
168 Roles cannot use the C<extends> keyword, it will throw an exception for now.
169 The same is true of the C<augment> and C<inner> keywords (not sure those
170 really make sense for roles). All other Moose keywords will be I<deferred>
171 so that they can be applied to the consuming class.
175 Basically thats all I can think of for now, I am sure there are more though.
179 All complex software has bugs lurking in it, and this module is no
180 exception. If you find a bug please either email me, or add the bug
185 Stevan Little E<lt>stevan@iinteractive.comE<gt>
187 =head1 COPYRIGHT AND LICENSE
189 Copyright 2006 by Infinity Interactive, Inc.
191 L<http://www.iinteractive.com>
193 This library is free software; you can redistribute it and/or modify
194 it under the same terms as Perl itself.