Add future ideas file

[gitmo/MooseX-AttributeHelpers.git] / lib / MooseX / AttributeHelpers / Collection / Hash.pm

package MooseX::AttributeHelpers::Collection::Hash;
use Moose;

our $VERSION   = '0.01';
our $AUTHORITY = 'cpan:STEVAN';

extends 'MooseX::AttributeHelpers::Collection';

sub helper_type { 'HashRef' }

has '+method_constructors' => (
    default => sub {
        return +{
            'exists' => sub {
                my $attr = shift;
                return sub { exists $attr->get_value($_[0])->{$_[1]} ? 1 : 0 };
            },            
            'get' => sub {
                my $attr = shift;
                return sub { $attr->get_value($_[0])->{$_[1]} };
            },    
            'set' => sub {
                my $attr = shift;
                if ($attr->has_container_type) {
                    my $container_type_constraint = $attr->container_type_constraint;
                    return sub { 
                        ($container_type_constraint->check($_[2])) 
                            || confess "Value " . ($_[2]||'undef') . " did not pass container type constraint";                        
                        $attr->get_value($_[0])->{$_[1]} = $_[2] 
                    };
                }
                else {
                    return sub { $attr->get_value($_[0])->{$_[1]} = $_[2] };
                }
            },    
            'keys' => sub {
                my $attr = shift;
                return sub { keys %{$attr->get_value($_[0])} };        
            },            
            'values' => sub {
                my $attr = shift;
                return sub { values %{$attr->get_value($_[0])} };        
            },            
            'count' => sub {
                my $attr = shift;
                return sub { scalar keys %{$attr->get_value($_[0])} };        
            },
            'empty' => sub {
                my $attr = shift;
                return sub { scalar keys %{$attr->get_value($_[0])} ? 1 : 0 };        
            }
            'delete' => sub {
                my $attr = shift;
                return sub { delete $attr->get_value($_[0])->{$_[1]} };
            }
        }
    }
);

no Moose;

# register the alias ...
package Moose::Meta::Attribute::Custom::Collection::Hash;
sub register_implementation { 'MooseX::AttributeHelpers::Collection::Hash' }


1;

__END__

=pod

=head1 NAME

=head1 SYNOPSIS

=head1 DESCRIPTION

=head1 METHODS

=head1 BUGS

All complex software has bugs lurking in it, and this module is no 
exception. If you find a bug please either email me, or add the bug
to cpan-RT.

=head1 AUTHOR

Stevan Little E<lt>stevan@iinteractive.comE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright 2007 by Infinity Interactive, Inc.

L<http://www.iinteractive.com>

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

=cut