NAME

MooseX::RoleQR - allow "before qr{...} => sub {...};" in roles

SYNOPSIS

{
   package Local::Role;
   use MooseX::RoleQR;
   after qr{^gr} => sub {
      print " World\n";
   };
}

{
   package Local::Class;
   use Moose;
   with qw( Local::Role );
   sub greet {
      print "Hello";
   }
}

Local::Class->new->greet; # prints "Hello World\n"

DESCRIPTION

Method modifiers in Moose classes can be specified using regular expressions a la:

before qr{...} => sub {...};

However, this is not allowed in Moose roles because Moose doesn't know which class the role will be composed with, and thus doesn't know which method names match the regular expression. Let's change that.

This module implements regular expression matched method modifiers for Moose roles. It does so by deferring the calculation of which methods to modify until role application time.

The current implementation handles only before, after and around modifiers (not override), and thus it overrides the following standard Moose::Role keywords:

before Str|ArrayRef|RegexpRef => CodeRef

after Str|ArrayRef|RegexpRef => CodeRef

around Str|ArrayRef|RegexpRef => CodeRef

Caveat Regarding the Order of Method Modifiers

Moose executes method modifiers in a well-defined order (see Moose::Manual::MethodModifiers for details). This module has the potential to disrupt that order, as regular expression matched modifiers are always applied after the role's other modifiers have been applied.

Caveat: no use Moose::Role

You should use MooseX::RoleQR instead of Moose::Role; not as well as.

General Caveat

There's some pretty nasty stuff under the hood. Let's pretend it's not there.

BUGS

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

SEE ALSO

Moose::Role.

AUTHOR

Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE

This software is copyright (c) 2012 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.