8 use Scalar::Util 'blessed';
11 our $AUTHORITY = 'cpan:STEVAN';
16 my ( $class, @args ) = @_;
18 unshift @args, "metaclass" if @args % 2 == 1;
21 my $meta_name = exists $options{meta_name} ? $options{meta_name} : 'meta';
22 my $metaclass = delete $options{metaclass};
24 unless ( defined $metaclass ) {
25 $metaclass = "Class::MOP::Class";
27 Class::MOP::load_class($metaclass);
30 ($metaclass->isa('Class::MOP::Class'))
31 || confess "The metaclass ($metaclass) must be derived from Class::MOP::Class";
33 # make sure the custom metaclasses get loaded
34 foreach my $key (grep { /_(?:meta)?class$/ } keys %options) {
35 unless ( ref( my $class = $options{$key} ) ) {
36 Class::MOP::load_class($class)
40 my $package = caller();
42 # create a meta object so we can install &meta
43 my $meta = $metaclass->initialize($package => %options);
44 $meta->_add_meta_method($meta_name)
45 if defined $meta_name;
50 # ABSTRACT: a pragma for installing and using Class::MOP metaclasses
60 # use Class::MOP::Class
63 # ... or use a custom metaclass
64 use metaclass 'MyMetaClass';
66 # ... or use a custom metaclass
67 # and custom attribute and method
69 use metaclass 'MyMetaClass' => (
70 'attribute_metaclass' => 'MyAttributeMetaClass',
71 'method_metaclass' => 'MyMethodMetaClass',
74 # ... or just specify custom attribute
75 # and method classes, and Class::MOP::Class
76 # is the assumed metaclass
78 'attribute_metaclass' => 'MyAttributeMetaClass',
79 'method_metaclass' => 'MyMethodMetaClass',
82 # if we'd rather not install a 'meta' method, we can do this
83 use metaclass meta_name => undef;
84 # or if we'd like it to have a different name,
85 use metaclass meta_name => 'my_meta';
89 This is a pragma to make it easier to use a specific metaclass
90 and a set of custom attribute and method metaclasses. It also
91 installs a C<meta> method to your class as well, unless C<undef>
92 is passed to the C<meta_name> option.