X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fmetaclass.pm;h=ed3be7946b25e8acf77e7786bd0dc8e3987bcc2e;hb=67f694add1dd6c3c8d78a7aa991e65ff71dd1395;hp=39fea4b41a23f88fed4a00c9c73c33ace1b7f8b6;hpb=550d56db72e2f36b7fb88e6f9aa9d7f3d3fef53b;p=gitmo%2FClass-MOP.git diff --git a/lib/metaclass.pm b/lib/metaclass.pm index 39fea4b..ed3be79 100644 --- a/lib/metaclass.pm +++ b/lib/metaclass.pm @@ -4,30 +4,50 @@ package metaclass; use strict; use warnings; -use Carp 'confess'; +use Carp 'confess'; +use Scalar::Util 'blessed'; -our $VERSION = '0.01'; +our $VERSION = '1.04'; +$VERSION = eval $VERSION; +our $AUTHORITY = 'cpan:STEVAN'; use Class::MOP; sub import { - shift; - my $metaclass = shift || 'Class::MOP::Class'; - my %options = @_; - my $package = caller(); - + my ( $class, @args ) = @_; + + unshift @args, "metaclass" if @args % 2 == 1; + my %options = @args; + + my $metaclass = delete $options{metaclass}; + + unless ( defined $metaclass ) { + $metaclass = "Class::MOP::Class"; + } else { + Class::MOP::load_class($metaclass); + } + ($metaclass->isa('Class::MOP::Class')) - || confess 'The metaclass must be derived from Class::MOP::Class'; - + || confess "The metaclass ($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_method('meta' => sub { - # we must re-initialize so that it - # works as expected in subclasses, - # since metaclass instances are - # singletons, this is not really a + # we must re-initialize so that it + # works as expected in subclasses, + # since metaclass instances are + # singletons, this is not really a # big deal anyway. - $metaclass->initialize($_[0] => %options) + $metaclass->initialize((blessed($_[0]) || $_[0]) => %options) }); } @@ -39,43 +59,51 @@ __END__ =head1 NAME -metaclass - a pragma for installing using Class::MOP metaclasses +metaclass - a pragma for installing and using Class::MOP metaclasses =head1 SYNOPSIS package MyClass; # use Class::MOP::Class - use metaclass; + use metaclass; # ... or use a custom metaclass use metaclass 'MyMetaClass'; - - # ... or use a custom metaclass + + # ... or use a custom metaclass # and custom attribute and method # metaclasses use metaclass 'MyMetaClass' => ( - ':attribute_metaclass' => 'MyAttributeMetaClass', - ':method_metaclass' => 'MyMethodMetaClass', + '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', ); =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 method to your class as well. +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 method to your class as well. -=head1 AUTHOR +=head1 AUTHORS Stevan Little Estevan@iinteractive.comE =head1 COPYRIGHT AND LICENSE -Copyright 2006 by Infinity Interactive, Inc. +Copyright 2006-2010 by Infinity Interactive, Inc. L This library is free software; you can redistribute it and/or modify -it under the same terms as Perl itself. +it under the same terms as Perl itself. -=cut \ No newline at end of file +=cut