NAME

MooseX::ABCD - MooseX::ABC, but checking required methods on make_immutable

SYNOPSIS

{
   package Shape;
   use Moose;
   use MooseX::ABCD;
   requires 'draw';
   __PACKAGE__->meta->make_immutable;
}

{
   package Circle;
   use Moose;
   extends 'Shape';
   sub draw {
      ...;
   }
   __PACKAGE__->meta->make_immutable;
}

my $shape  = Shape->new;   # dies
my $circle = Circle->new;  # succeeds

{
   package Square;
   use Moose;
   extends 'Shape';
   __PACKAGE__->meta->make_immutable;
   # ^^^ dies, draw is unimplemented
}

DESCRIPTION

What does ABCD stand for? Hmmm... maybe "abstract base classes deferred"? or "abstract base classes declare-compatible"? (This module works with MooseX::Declare, whereas MooseX::ABC does not!)

Anyway, whatever ABCD does or does not stand for, this is what MooseX::ABCD does: it works just like MooseX::ABC, the checks that derived classes implement all abstract methods happen when the class is made immutable, not when inheritance is set up.

Why? It works better with MooseX::Declare this way.

Functions

This module exports one function to your namespace:

requires

Works like requires in Moose roles, but for classes.

BUGS

Please report any bugs to http://rt.cpan.org/Dist/Display.html?Queue=MooseX-ABCD.

SEE ALSO

MooseX::ABC, MooseX::AbstractMethod.

AUTHOR

Toby Inkster <tobyink@cpan.org>, though most of the code is stolen from Jesse Luehrs. (But don't blame him is something goes wrong. For that matter, don't blame me either - take a look at the disclaimer of warranties.)

COPYRIGHT AND LICENCE

This software is copyright (c) 2012-2013 by Toby Inkster.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTIES

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.