Commit | Line | Data |
677eb158 |
1 | |
2 | package metaclass; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
22286063 |
7 | use Carp 'confess'; |
8 | use Scalar::Util 'blessed'; |
10c5d753 |
9 | use Try::Tiny; |
677eb158 |
10 | |
81b5e774 |
11 | our $VERSION = '1.09'; |
d519662a |
12 | $VERSION = eval $VERSION; |
f0480c45 |
13 | our $AUTHORITY = 'cpan:STEVAN'; |
677eb158 |
14 | |
15 | use Class::MOP; |
16 | |
17 | sub import { |
ec21cb13 |
18 | my ( $class, @args ) = @_; |
19 | |
20 | unshift @args, "metaclass" if @args % 2 == 1; |
21 | my %options = @args; |
22 | |
20b0fc6f |
23 | my $should_install_meta = !delete $options{no_meta}; |
ec21cb13 |
24 | my $metaclass = delete $options{metaclass}; |
25 | |
26 | unless ( defined $metaclass ) { |
27 | $metaclass = "Class::MOP::Class"; |
28 | } else { |
95514cb4 |
29 | Class::MOP::load_class($metaclass); |
1becdfcc |
30 | } |
ec21cb13 |
31 | |
32 | ($metaclass->isa('Class::MOP::Class')) |
33 | || confess "The metaclass ($metaclass) must be derived from Class::MOP::Class"; |
34 | |
8861fab2 |
35 | # make sure the custom metaclasses get loaded |
de12105a |
36 | foreach my $key (grep { /_(?:meta)?class$/ } keys %options) { |
37 | unless ( ref( my $class = $options{$key} ) ) { |
38 | Class::MOP::load_class($class) |
39 | } |
8861fab2 |
40 | } |
41 | |
d82060fe |
42 | my $package = caller(); |
95514cb4 |
43 | |
677eb158 |
44 | # create a meta object so we can install &meta |
45 | my $meta = $metaclass->initialize($package => %options); |
59b51046 |
46 | $meta->_add_meta_method if $should_install_meta; |
677eb158 |
47 | } |
48 | |
49 | 1; |
50 | |
51 | __END__ |
52 | |
53 | =pod |
54 | |
55 | =head1 NAME |
56 | |
96ceced8 |
57 | metaclass - a pragma for installing and using Class::MOP metaclasses |
677eb158 |
58 | |
59 | =head1 SYNOPSIS |
60 | |
550d56db |
61 | package MyClass; |
62 | |
63 | # use Class::MOP::Class |
95514cb4 |
64 | use metaclass; |
550d56db |
65 | |
66 | # ... or use a custom metaclass |
677eb158 |
67 | use metaclass 'MyMetaClass'; |
95514cb4 |
68 | |
69 | # ... or use a custom metaclass |
550d56db |
70 | # and custom attribute and method |
71 | # metaclasses |
677eb158 |
72 | use metaclass 'MyMetaClass' => ( |
c23184fc |
73 | 'attribute_metaclass' => 'MyAttributeMetaClass', |
95514cb4 |
74 | 'method_metaclass' => 'MyMethodMetaClass', |
677eb158 |
75 | ); |
76 | |
1becdfcc |
77 | # ... or just specify custom attribute |
78 | # and method classes, and Class::MOP::Class |
79 | # is the assumed metaclass |
80 | use metaclass ( |
c23184fc |
81 | 'attribute_metaclass' => 'MyAttributeMetaClass', |
95514cb4 |
82 | 'method_metaclass' => 'MyMethodMetaClass', |
1becdfcc |
83 | ); |
84 | |
37f3c875 |
85 | # if we'd rather not install a 'meta' method, we can do this |
86 | use metaclass no_meta => 1; |
87 | |
677eb158 |
88 | =head1 DESCRIPTION |
89 | |
95514cb4 |
90 | This is a pragma to make it easier to use a specific metaclass |
91 | and a set of custom attribute and method metaclasses. It also |
37f3c875 |
92 | installs a C<meta> method to your class as well, if the |
93 | C<no_meta> option is not specified. |
c9e77dbb |
94 | |
1a09d9cc |
95 | =head1 AUTHORS |
677eb158 |
96 | |
97 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
98 | |
99 | =head1 COPYRIGHT AND LICENSE |
100 | |
3e2c8600 |
101 | Copyright 2006-2010 by Infinity Interactive, Inc. |
677eb158 |
102 | |
103 | L<http://www.iinteractive.com> |
104 | |
105 | This library is free software; you can redistribute it and/or modify |
95514cb4 |
106 | it under the same terms as Perl itself. |
677eb158 |
107 | |
16e960bd |
108 | =cut |