Bug #48566 for MooseX-ABC: Doesn't work with MooseX::Declare

Sun Aug 09 16:38:00 2009 onken [...] netcubed.de - Ticket created

Subject:

Doesn't work with MooseX::Declare

Hi, MooseX::ABC doesn't seem to wokr with classes which were defined using MooseX::Declare.

Fri Dec 25 15:49:51 2009 dhorne [...] cpan.org - Correspondence added

Hello, just a note to signal that I'm interested in this issue too

Fri Dec 25 15:49:52 2009 The RT System itself - Status changed from 'new' to 'open'

Sat Dec 26 01:00:04 2009 DOY [...] cpan.org - Correspondence added

I don't use MooseX::Declare, so I'm going to need a little more information than "it doesn't work". What exactly is broken?

Sat Dec 26 03:37:31 2009 onken [...] netcubed.de - Correspondence added

Am Sa 26. Dez 2009, 01:00:04, DOY schrieb:
Show quoted text

> I don't use MooseX::Declare, so I'm going to need a little more information
> than "it doesn't work". What exactly is broken?

use MooseX::Declare;

class Foo {

use MooseX::ABC;

requires 'abc';

}

class Bar extends Foo {

method abc() {}

}

this this simple example gives me the following error message:

"Foo requires Bar to implement abc "

If I write sub abc {} instead of method aba(){} it seems to work.

Tue Aug 21 06:20:15 2012 perl [...] toby.ink - Correspondence added

I've just released MooseX::ABCD which works like MooseX::ABC but plays nicer with MooseX::Declare. The difficulty with the way MooseX::ABC works is that it checks that required methods have been implemented by derived classes when the inheritance is set up. However, MooseX::Declare sets up inheritance *before* processing the body of the class, thus none of the class' methods are defined yet. MooseX::ABCD fixes this by deferring the check for required methods until the derived class is made immutable. This allows it work with MooseX::Declare. It also means that MooseX::ABCD has a bug (or perhaps feature?) that if a class is mutable, the 'requires' checks do not happen. However, MooseX::Declare makes classes mutable by default.