package metaclass;
BEGIN {
$metaclass::AUTHORITY = 'cpan:STEVAN';
}
BEGIN {
$metaclass::VERSION = '2.0101'; # TRIAL
}
use strict;
use Carp 'confess';
use Scalar::Util 'blessed';
sub import {
my ( $class, @args ) = @_;
unshift @args, "metaclass" if @args % 2 == 1;
my %options = @args;
my $meta_name = exists $options{meta_name} ? $options{meta_name} : 'meta';
my $metaclass = delete $options{metaclass};
unless ( defined $metaclass ) {
$metaclass = "Class::MOP::Class";
} else {
Class::MOP::load_class($metaclass);
}
($metaclass->isa('Class::MOP::Class'))
|| confess "The metaclass ($metaclass) must be derived from Class::MOP::Class";
# make sure the custom metaclasses get loaded
foreach my $key (grep { /_(?:meta)?class$/ } keys %options) {
unless ( ref( my $class = $options{$key} ) ) {
Class::MOP::load_class($class)
}
}
my $package = caller();
# create a meta object so we can install &meta
my $meta = $metaclass->initialize($package => %options);
$meta->_add_meta_method($meta_name)
if defined $meta_name;
}
1;
# ABSTRACT: a pragma for installing and using Class::MOP metaclasses
=pod
=head1 NAME
metaclass - a pragma for installing and using Class::MOP metaclasses
=head1 VERSION
version 2.0101
=head1 SYNOPSIS
package MyClass;
# use Class::MOP::Class
use metaclass;
# ... or use a custom metaclass
use metaclass 'MyMetaClass';
# ... or use a custom metaclass
# and custom attribute and method
# metaclasses
use metaclass 'MyMetaClass' => (
'attribute_metaclass' => 'MyAttributeMetaClass',
'method_metaclass' => 'MyMethodMetaClass',
);
# ... or just specify custom attribute
# and method classes, and Class::MOP::Class
# is the assumed metaclass
use metaclass (
'attribute_metaclass' => 'MyAttributeMetaClass',
'method_metaclass' => 'MyMethodMetaClass',
);
# if we'd rather not install a 'meta' method, we can do this
use metaclass meta_name => undef;
# or if we'd like it to have a different name,
use metaclass meta_name => 'my_meta';
=head1 DESCRIPTION
This is a pragma to make it easier to use a specific metaclass
and a set of custom attribute and method metaclasses. It also
installs a C<meta> method to your class as well, unless C<undef>
is passed to the C<meta_name> option.
Note that if you are using Moose, you most likely do B<not> want
to be using this - look into L<Moose::Util::MetaRole> instead.
=head1 AUTHOR
Stevan Little <stevan@iinteractive.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Infinity Interactive, Inc..
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
__END__