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1 | package MooseX::ClassAttribute; |
2 | |
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3 | use strict; |
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4 | use warnings; |
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5 | |
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6 | our $VERSION = '0.10'; |
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7 | our $AUTHORITY = 'cpan:DROLSKY'; |
8 | |
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9 | use Moose 0.89 (); |
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10 | use Moose::Exporter; |
11 | use MooseX::ClassAttribute::Role::Meta::Class; |
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12 | |
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13 | Moose::Exporter->setup_import_methods( with_meta => ['class_has'] ); |
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14 | |
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15 | sub init_meta { |
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16 | shift; |
17 | my %p = @_; |
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18 | |
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19 | return Moose::Util::MetaRole::apply_metaclass_roles( |
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20 | for => $p{for_class}, |
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21 | class_metaroles => { |
22 | class => ['MooseX::ClassAttribute::Role::Meta::Class'], |
23 | }, |
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24 | role_metaroles => { |
25 | role => ['MooseX::ClassAttribute::Role::Meta::Role'], |
26 | }, |
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27 | ); |
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28 | } |
29 | |
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30 | sub class_has { |
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31 | my $meta = shift; |
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32 | my $name = shift; |
33 | my %options = @_; |
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34 | |
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35 | my $attrs = ref $name eq 'ARRAY' ? $name : [$name]; |
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36 | |
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37 | $meta->add_class_attribute( $_, %options ) for @{$attrs}; |
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38 | } |
39 | |
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40 | 1; |
41 | |
42 | __END__ |
43 | |
44 | =pod |
45 | |
46 | =head1 NAME |
47 | |
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48 | MooseX::ClassAttribute - Declare class attributes Moose-style |
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49 | |
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50 | =head1 SYNOPSIS |
51 | |
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52 | package My::Class; |
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53 | |
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54 | use Moose; |
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55 | use MooseX::ClassAttribute; |
56 | |
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57 | class_has 'Cache' => |
58 | ( is => 'rw', |
59 | isa => 'HashRef', |
60 | default => sub { {} }, |
61 | ); |
62 | |
63 | __PACKAGE__->meta()->make_immutable(); |
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64 | |
65 | no Moose; |
66 | no MooseX::ClassAttribute; |
67 | |
68 | # then later ... |
69 | |
70 | My::Class->Cache()->{thing} = ...; |
71 | |
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72 | =head1 DESCRIPTION |
73 | |
74 | This module allows you to declare class attributes in exactly the same |
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75 | way as object attributes, using C<class_has()> instead of C<has()>. |
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76 | |
77 | You can use any feature of Moose's attribute declarations, including |
78 | overriding a parent's attributes, delegation (C<handles>), and |
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79 | attribute metaclasses, and it should just work. The one exception is |
80 | the "required" flag, which is not allowed for class attributes. |
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81 | |
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82 | The accessor methods for class attribute may be called on the class |
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83 | directly, or on objects of that class. Passing a class attribute to |
84 | the constructor will not set it. |
85 | |
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86 | =head1 FUNCTIONS |
87 | |
88 | This class exports one function when you use it, C<class_has()>. This |
89 | works exactly like Moose's C<has()>, but it declares class attributes. |
90 | |
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91 | One little nit is that if you include C<no Moose> in your class, you |
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92 | won't remove the C<class_has()> function. To do that you must include |
93 | C<no MooseX::ClassAttribute> as well. |
94 | |
95 | =head2 Implementation and Immutability |
96 | |
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97 | This module will add a role to your class's metaclass, See |
98 | L<MooseX::ClassAttribute::Role::Meta::Class> for details. This role |
99 | provides introspection methods for class attributes. |
100 | |
101 | Class attributes themselves do the |
102 | L<MooseX::ClassAttribute::Role::Meta::Attribute> role. |
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103 | |
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104 | There is also a L<MooseX::ClassAttribute::Meta::Method::Accessor> |
105 | which provides part of the inlining implementation for class |
106 | attributes. |
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107 | |
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108 | =head2 Cooperation with Metaclasses and Traits |
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109 | |
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110 | This module should work with most attribute metaclasses and traits, |
111 | but it's possible that conflicts could occur. This module has been |
112 | tested to work with C<MooseX::AttributeHelpers>. |
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113 | |
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114 | =head1 DONATIONS |
115 | |
116 | If you'd like to thank me for the work I've done on this module, |
117 | please consider making a "donation" to me via PayPal. I spend a lot of |
118 | free time creating free software, and would appreciate any support |
119 | you'd care to offer. |
120 | |
121 | Please note that B<I am not suggesting that you must do this> in order |
122 | for me to continue working on this particular software. I will |
123 | continue to do so, inasmuch as I have in the past, for as long as it |
124 | interests me. |
125 | |
126 | Similarly, a donation made in this way will probably not make me work |
127 | on this software much more, unless I get so many donations that I can |
128 | consider working on free software full time, which seems unlikely at |
129 | best. |
130 | |
131 | To donate, log into PayPal and send money to autarch@urth.org or use |
132 | the button on this page: |
133 | L<http://www.urth.org/~autarch/fs-donation.html> |
134 | |
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135 | =head1 AUTHOR |
136 | |
137 | Dave Rolsky, C<< <autarch@urth.org> >> |
138 | |
139 | =head1 BUGS |
140 | |
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141 | Please report any bugs or feature requests to |
142 | C<bug-moosex-classattribute@rt.cpan.org>, or through the web interface |
143 | at L<http://rt.cpan.org>. I will be notified, and then you'll |
144 | automatically be notified of progress on your bug as I make changes. |
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145 | |
146 | =head1 COPYRIGHT & LICENSE |
147 | |
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148 | Copyright 2007-2008 Dave Rolsky, All Rights Reserved. |
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149 | |
150 | This program is free software; you can redistribute it and/or modify |
151 | it under the same terms as Perl itself. |
152 | |
153 | =cut |