NAME

Sub::HandlesVia::Declare - declare delegations at compile-time

SYNOPSIS

 use Sub::HandlesVia::Declare( $attr, $via => %delegations );

This is roughly equivalent to the following:

 use Sub::HandlesVia qw(delegations);
 
 BEGIN {
   delegations(
     attribute    => $attr,
     handles_via  => $via,
     handles      => \%delegations,
   );
 };

Except it doesn't import the delegations function into your namespace.

DESCRIPTION

Useful for Object::Pad and kind of nice for Class::Tiny. Basically any class builder than does its stuff at compile time.

Object::Pad

 use Object::Pad;
 
 class Kitchen {
   has @foods;
   use Sub::HandlesVia::Declare '@foods', Array => (
     all_foods => 'all',
     add_food  => 'push',
   );
 }

If an attribute begins with a '@' or '%', $via can be omitted.

 use Object::Pad;
 
 class Kitchen {
   has @foods;
   use Sub::HandlesVia::Declare '@foods', (
     all_foods => 'all',
     add_food  => 'push',
   );
 }

Class::Tiny

 package Kitchen;
 use Class::Tiny {
   foods  => sub { [] },
   drinks => sub { [ 'water' ] },
 };
 use Sub::HandlesVia::Declare 'foods', Array => (
   all_foods  => 'all',
   add_food   => 'push',
 );
 use Sub::HandlesVia::Declare 'drinks', Array => (
   all_drinks => 'all',
   add_drink  => 'push',
 );

BUGS

Please report any bugs to https://github.com/tobyink/p5-sub-handlesvia/issues.

SEE ALSO

Sub::HandlesVia.

AUTHOR

Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE

This software is copyright (c) 2022 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.