Moose::Util::MetaRole(User Contributed Perl DocumentMoose::Util::MetaRole(3pm)
NAME
Moose::Util::MetaRole - Apply roles to any metaclass, as well as the
object base class
VERSION
version 2.2203
SYNOPSIS
package MyApp::Moose;
use Moose ();
use Moose::Exporter;
use Moose::Util::MetaRole;
use MyApp::Role::Meta::Class;
use MyApp::Role::Meta::Method::Constructor;
use MyApp::Role::Object;
Moose::Exporter->setup_import_methods( also => 'Moose' );
sub init_meta {
shift;
my %args = @_;
Moose->init_meta(%args);
Moose::Util::MetaRole::apply_metaroles(
for => $args{for_class},
class_metaroles => {
class => ['MyApp::Role::Meta::Class'],
constructor => ['MyApp::Role::Meta::Method::Constructor'],
},
);
Moose::Util::MetaRole::apply_base_class_roles(
for => $args{for_class},
roles => ['MyApp::Role::Object'],
);
return $args{for_class}->meta();
}
DESCRIPTION
This utility module is designed to help authors of Moose extensions
write extensions that are able to cooperate with other Moose
extensions. To do this, you must write your extensions as roles, which
can then be dynamically applied to the caller's metaclasses.
This module makes sure to preserve any existing superclasses and roles
already set for the meta objects, which means that any number of
extensions can apply roles in any order.
USAGE
The easiest way to use this module is through Moose::Exporter, which
can generate the appropriate "init_meta" method for you, and make sure
it is called when imported.
FUNCTIONS
This module provides two functions.
apply_metaroles( ... )
This function will apply roles to one or more metaclasses for the
specified class. It will return a new metaclass object for the class or
role passed in the "for" parameter.
It accepts the following parameters:
• for => $name
This specifies the class for which to alter the meta classes. This
can be a package name, or an appropriate meta-object (a
Moose::Meta::Class or Moose::Meta::Role).
• class_metaroles => \%roles
This is a hash reference specifying which metaroles will be applied
to the class metaclass and its contained metaclasses and helper
classes.
Each key should in turn point to an array reference of role names.
It accepts the following keys:
class
attribute
method
wrapped_method
instance
constructor
destructor
error
• role_metaroles => \%roles
This is a hash reference specifying which metaroles will be applied
to the role metaclass and its contained metaclasses and helper
classes.
It accepts the following keys:
role
attribute
method
required_method
conflicting_method
application_to_class
application_to_role
application_to_instance
application_role_summation
applied_attribute
apply_base_class_roles( for => $class, roles => \@roles )
This function will apply the specified roles to the object's base
class.
BUGS
See "BUGS" in Moose for details on reporting bugs.
AUTHORS
• Stevan Little <stevan@cpan.org>
• Dave Rolsky <autarch@urth.org>
• Jesse Luehrs <doy@cpan.org>
• Shawn M Moore <sartak@cpan.org>
• יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
• Karen Etheridge <ether@cpan.org>
• Florian Ragwitz <rafl@debian.org>
• Hans Dieter Pearcey <hdp@cpan.org>
• Chris Prather <chris@prather.org>
• Matt S Trout <mstrout@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2006 by Infinity Interactive, Inc.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
perl v5.36.0 2023-01-30 Moose::Util::MetaRole(3pm)
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