MooseX::AbstractMethod - Declare methods requirements that must be satisfied
This document describes version 0.004 of MooseX::AbstractMethod - released August 31, 2012 as part of MooseX-AbstractMethod.
use Moose; use MooseX::Abstract; requires 'bar'; # synonm to 'requires' abstract 'foo';
This extensions allows classes to flag certain methods as being required to be implemented by a subclass, much as a Moose::Role does with 'requires'.
As in the synopsis, simply mark certain methods as being required by subclasses by passing their names to "abstract" or "requires". This will cause a method of the same name to be installed in the class that will die horribly if it's ever called. Additionally, when a class is made immutable, all of its methods are checked to see if they're marked as abstract; if any abstract methods exists that were not created in the current class, we die horribly.
Checking for method satisfaction on make_immutable isn't perfect, but AFAICT it's the most reasonable approach possible at the moment. (Corrections welcome.)
abstract() allows one to declare a method dependency that must be satisfied by a subclass before it is invoked, and before the subclass is made immutable.
requires() is a synonym for abstract() and works in the way you'd expect.
The development version is on github at http://github.com/RsrchBoy/moosex-abstractmethod and may be cloned from git://github.com/RsrchBoy/moosex-abstractmethod.git
Please report any bugs or feature requests on the bugtracker website https://github.com/RsrchBoy/moosex-abstractmethod/issues
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
Chris Weyl <email@example.com>
This software is Copyright (c) 2011 by Chris Weyl.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999