-
package Moose::Role;
+use strict;
+use warnings;
use Scalar::Util 'blessed';
use Carp 'croak';
use Sub::Exporter;
-our $VERSION = '0.79';
+our $VERSION = '1.25';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
}
sub with {
- Moose::Util::apply_all_roles( Moose::Meta::Role->initialize(shift), @_ );
+ Moose::Util::apply_all_roles( shift, @_ );
}
sub requires {
- my $meta = Moose::Meta::Role->initialize(shift);
+ my $meta = shift;
croak "Must specify at least one method" unless @_;
$meta->add_required_methods(@_);
}
sub excludes {
- my $meta = Moose::Meta::Role->initialize(shift);
+ my $meta = shift;
croak "Must specify at least one role" unless @_;
$meta->add_excluded_roles(@_);
}
sub has {
- my $meta = Moose::Meta::Role->initialize(shift);
+ my $meta = shift;
my $name = shift;
croak 'Usage: has \'name\' => ( key => value, ... )' if @_ == 1;
- my %options = @_;
+ my %options = ( definition_context => Moose::Util::_caller_info(), @_ );
my $attrs = ( ref($name) eq 'ARRAY' ) ? $name : [ ($name) ];
$meta->add_attribute( $_, %options ) for @$attrs;
}
sub _add_method_modifier {
my $type = shift;
- my $meta = Moose::Meta::Role->initialize(shift);
- my $code = pop @_;
-
- for (@_) {
- croak "Roles do not currently support "
- . ref($_)
- . " references for $type method modifiers"
- if ref $_;
- my $add_method = "add_${type}_method_modifier";
- $meta->$add_method( $_, $code );
+ my $meta = shift;
+
+ if ( ref($_[0]) eq 'Regexp' ) {
+ croak "Roles do not currently support regex "
+ . " references for $type method modifiers";
}
+
+ Moose::Util::add_method_modifier($meta, $type, \@_);
}
sub before { _add_method_modifier('before', @_) }
}
sub override {
- my $meta = Moose::Meta::Role->initialize(shift);
+ my $meta = shift;
my ( $name, $code ) = @_;
$meta->add_override_method_modifier( $name, $code );
}
}
Moose::Exporter->setup_import_methods(
- with_caller => [
- qw( with requires excludes has before after around override make_immutable )
+ with_meta => [
+ qw( with requires excludes has before after around override )
],
as_is => [
qw( extends super inner augment ),
}
my $metaclass = $args{metaclass} || "Moose::Meta::Role";
+ my $meta_name = exists $args{meta_name} ? $args{meta_name} : 'meta';
+
+ Moose->throw_error("The Metaclass $metaclass must be a subclass of Moose::Meta::Role.")
+ unless $metaclass->isa('Moose::Meta::Role');
- # make a subtype for each Moose class
+ # make a subtype for each Moose role
role_type $role unless find_type_constraint($role);
- # FIXME copy from Moose.pm
my $meta;
- if ($role->can('meta')) {
- $meta = $role->meta();
-
- unless ( blessed($meta) && $meta->isa('Moose::Meta::Role') ) {
- require Moose;
- Moose->throw_error("You already have a &meta function, but it does not return a Moose::Meta::Role");
+ if ( $meta = Class::MOP::get_metaclass_by_name($role) ) {
+ unless ( $meta->isa("Moose::Meta::Role") ) {
+ my $error_message = "$role already has a metaclass, but it does not inherit $metaclass ($meta).";
+ if ( $meta->isa('Moose::Meta::Class') ) {
+ Moose->throw_error($error_message . ' You cannot make the same thing a role and a class. Remove either Moose or Moose::Role.');
+ } else {
+ Moose->throw_error($error_message);
+ }
}
}
else {
$meta = $metaclass->initialize($role);
+ }
- $meta->add_method(
- 'meta' => sub {
- # re-initialize so it inherits properly
- $metaclass->initialize( ref($_[0]) || $_[0] );
- }
- );
+ if (defined $meta_name) {
+ # also check for inherited non moose 'meta' method?
+ my $existing = $meta->get_method($meta_name);
+ if ($existing && !$existing->isa('Class::MOP::Method::Meta')) {
+ Carp::cluck "Moose::Role is overwriting an existing method named "
+ . "$meta_name in role $role with a method "
+ . "which returns the class's metaclass. If this is "
+ . "actually what you want, you should remove the "
+ . "existing method, otherwise, you should rename or "
+ . "disable this generated method using the "
+ . "'-meta_name' option to 'use Moose::Role'.";
+ }
+ $meta->_add_meta_method($meta_name);
}
return $meta;
=head1 DESCRIPTION
-The concept of roles is documented in L<Moose::Manual::Role>. This document
+The concept of roles is documented in L<Moose::Manual::Roles>. This document
serves as API documentation.
=head1 EXPORTED FUNCTIONS
Moose::Role currently supports all of the functions that L<Moose> exports, but
-differs slightly in how some items are handled (see L<CAVEATS> below for
+differs slightly in how some items are handled (see L</CAVEATS> below for
details).
Moose::Role also offers two role-specific keyword exports:
Roles can require that certain methods are implemented by any class which
C<does> the role.
+Note that attribute accessors also count as methods for the purposes
+of satisfying the requirements of a role.
+
=item B<excludes (@role_names)>
Roles can C<exclude> other roles, in effect saying "I can never be combined
This is very similar to the attribute traits feature. When you do
this, your class's C<meta> object will have the specified traits
-applied to it. See L<Moose/TRAIT NAME RESOLUTION> for more details.
+applied to it. See L<Moose/Metaclass and Trait Name Resolution> for more
+details.
+
+=head1 APPLYING ROLES
+
+In addition to being applied to a class using the 'with' syntax (see
+L<Moose::Manual::Roles>) and using the L<Moose::Util> 'apply_all_roles'
+method, roles may also be applied to an instance of a class using
+L<Moose::Util> 'apply_all_roles' or the role's metaclass:
+
+ MyApp::Test::SomeRole->meta->apply( $instance );
+
+Doing this creates a new, mutable, anonymous subclass, applies the role to that,
+and reblesses. In a debugger, for example, you will see class names of the
+form C< Class::MOP::Class::__ANON__::SERIAL::6 >, which means that doing a 'ref'
+on your instance may not return what you expect. See L<Moose::Object> for 'DOES'.
+
+Additional params may be added to the new instance by providing 'rebless_params'.
+See L<Moose::Meta::Role::Application::ToInstance>.
=head1 CAVEATS
=head1 BUGS
-All complex software has bugs lurking in it, and this module is no
-exception. If you find a bug please either email me, or add the bug
-to cpan-RT.
+See L<Moose/BUGS> for details on reporting bugs.
=head1 AUTHOR
=head1 COPYRIGHT AND LICENSE
-Copyright 2006-2009 by Infinity Interactive, Inc.
+Copyright 2006-2010 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
projects / gitmo/Moose.git / blobdiff