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📛 NAME

Moose::Meta::Class — The Moose metaclass

🚀 Quick Reference

Use Case	Command	Description
Create a class with roles	Moose::Meta::Class->create('New::Class', roles => ['Role1'])	Create a class and apply specified roles
Create an anonymous class	Moose::Meta::Class->create_anon_class(superclasses => ['Foo'], roles => ['Bar'], cache => 1)	Create an anonymous class with caching based on superclasses and roles
Add override method modifier	$metaclass->add_override_method_modifier('name', sub { ... })	Add an override method modifier to the package
Add augment method modifier	$metaclass->add_augment_method_modifier('name', sub { ... })	Add an augment method modifier to the package
Add a role to the class's list	$metaclass->add_role($role_meta_object)	Add a role to the class's list (does not apply)
Check role composition	$metaclass->does_role('RoleName')	Check if class or any parent does the specified role
Change superclasses	$metaclass->superclasses('ParentClass')	Set or get superclasses with optional version requirements

📦 VERSION

version 2.2200

📝 DESCRIPTION

This class is a subclass of Class::MOP::Class that provides additional Moose-specific functionality.

To really understand this class, you will need to start with the Class::MOP::Class documentation. This class can be understood as a set of additional features on top of the basic feature provided by that parent class.

🧬 INHERITANCE

Moose::Meta::Class is a subclass of Class::MOP::Class.

⚙️ METHODS

• Moose::Meta::Class->initialize($package_name, %options) — This overrides the parent's method in order to provide its own defaults for the attribute_metaclass, instance_metaclass, and method_metaclass options. These all default to the appropriate Moose class.
• Moose::Meta::Class->create($package_name, %options) — This overrides the parent's method in order to accept a roles option. This should be an array reference containing roles that the class does, each optionally followed by a hashref of options (-excludes and -alias).

    my $metaclass = Moose::Meta::Class->create( 'New::Class', roles => [...] );

• Moose::Meta::Class->create_anon_class — This overrides the parent's method to accept a roles option, just as create does. It also accepts a cache option. If this is true, then the anonymous class will be cached based on its superclasses and roles. If an existing anonymous class in the cache has the same superclasses and roles, it will be reused.

    my $metaclass = Moose::Meta::Class->create_anon_class(
        superclasses => ['Foo'],
        roles        => [qw/Some Roles Go Here/],
        cache        => 1,
    );

  Each entry in both the superclasses and the roles option can be followed by a hash reference with arguments. The superclasses option can be supplied with a -version option that ensures the loaded superclass satisfies the required version. The role option also takes the -version as an argument, but the option hash reference can also contain any other role relevant values like exclusions or parameterized role arguments.
• $metaclass->new_object(%params) — This overrides the parent's method in order to add support for attribute triggers.
• $metaclass->superclasses(@superclasses) — This is the accessor allowing you to read or change the parents of the class. Each superclass can be followed by a hash reference containing a -version value. If the version requirement is not satisfied an error will be thrown. When you pass classes to this method, we will attempt to load them if they are not already loaded.
• $metaclass->add_override_method_modifier($name, $sub) — This adds an override method modifier to the package.
• $metaclass->add_augment_method_modifier($name, $sub) — This adds an augment method modifier to the package.
• $metaclass->calculate_all_roles — This will return a unique array of Moose::Meta::Role instances which are attached to this class.
• $metaclass->calculate_all_roles_with_inheritance — This will return a unique array of Moose::Meta::Role instances which are attached to this class, and each of this class's ancestors.
• $metaclass->add_role($role) — This takes a Moose::Meta::Role object, and adds it to the class's list of roles. This does not actually apply the role to the class.
• $metaclass->role_applications — Returns a list of Moose::Meta::Role::Application::ToClass objects, which contain the arguments to role application.
• $metaclass->add_role_application($application) — This takes a Moose::Meta::Role::Application::ToClass object, and adds it to the class's list of role applications. This does not actually apply any role to the class; it is only for tracking role applications.
• $metaclass->does_role($role) — This returns a boolean indicating whether or not the class does the specified role. The role provided can be either a role name or a Moose::Meta::Role object. This tests both the class and its parents.
• $metaclass->excludes_role($role_name) — A class excludes a role if it has already composed a role which excludes the named role. This tests both the class and its parents.
• $metaclass->add_attribute($attr_name, %params|$params) — This overrides the parent's method in order to allow the parameters to be provided as a hash reference.
• $metaclass->constructor_class($class_name) / $metaclass->destructor_class($class_name) — These are the names of classes used when making a class immutable. These default to Moose::Meta::Method::Constructor and Moose::Meta::Method::Destructor respectively. These accessors are read-write, so you can use them to change the class name.

🐛 BUGS

See "BUGS" in Moose for details on reporting bugs.

👥 AUTHORS

• Stevan Little <stevan AT cpan.org>
• Dave Rolsky <autarch AT urth.org>
• Jesse Luehrs <doy AT cpan.org>
• Shawn M Moore <sartak AT cpan.org>
• יובל קוג'מן (Yuval Kogman) <nothingmuch AT woobling.org>
• Karen Etheridge <ether AT cpan.org>
• Florian Ragwitz <rafl AT debian.org>
• Hans Dieter Pearcey <hdp AT cpan.org>
• Chris Prather <chris AT prather.org>
• Matt S Trout <mstrout AT 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.

📛 NAME 🚀 Quick Reference 📦 VERSION 📝 DESCRIPTION 🧬 INHERITANCE ⚙️ METHODS 🐛 BUGS 👥 AUTHORS 📄 COPYRIGHT AND LICENSE