X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fmetaclass.pm;h=4014dfad30b18eaa0e9580b9249aacb6ab205f4a;hb=HEAD;hp=80e10aa63f8f09ab622a6a750957c759dd107999;hpb=9c8cda9011b019e4876183222b8793b66bab7546;p=gitmo%2FClass-MOP.git diff --git a/lib/metaclass.pm b/lib/metaclass.pm index 80e10aa..4014dfa 100644 --- a/lib/metaclass.pm +++ b/lib/metaclass.pm @@ -6,36 +6,45 @@ use warnings; use Carp 'confess'; use Scalar::Util 'blessed'; +use Try::Tiny; -our $VERSION = '0.03'; +our $VERSION = '1.12'; +$VERSION = eval $VERSION; our $AUTHORITY = 'cpan:STEVAN'; use Class::MOP; sub import { - shift; - my $metaclass; - if (!defined($_[0]) || $_[0] =~ /^(attribute|method|instance)_metaclass/) { - $metaclass = 'Class::MOP::Class'; + 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); } - else { - $metaclass = shift; - ($metaclass->isa('Class::MOP::Class')) - || confess "The metaclass ($metaclass) must be derived from Class::MOP::Class"; + + ($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 %options = @_; + 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 - # big deal anyway. - $metaclass->initialize((blessed($_[0]) || $_[0]) => %options) - }); + $meta->_add_meta_method($meta_name) + if defined $meta_name; } 1; @@ -53,17 +62,17 @@ metaclass - a pragma for installing and using Class::MOP metaclasses 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', + 'method_metaclass' => 'MyMethodMetaClass', ); # ... or just specify custom attribute @@ -71,14 +80,20 @@ metaclass - a pragma for installing and using Class::MOP metaclasses # is the assumed metaclass use metaclass ( 'attribute_metaclass' => 'MyAttributeMetaClass', - 'method_metaclass' => 'MyMethodMetaClass', + '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 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, unless C +is passed to the C option. =head1 AUTHORS @@ -86,11 +101,11 @@ Stevan Little Estevan@iinteractive.comE =head1 COPYRIGHT AND LICENSE -Copyright 2006, 2007 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