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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 | use Moose 0.98 (); |
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7 | use Moose::Exporter; |
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8 | use MooseX::ClassAttribute::Trait::Class; |
9 | use MooseX::ClassAttribute::Trait::Role; |
10 | use MooseX::ClassAttribute::Trait::Application::ToClass; |
11 | use MooseX::ClassAttribute::Trait::Application::ToRole; |
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12 | |
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13 | Moose::Exporter->setup_import_methods( |
14 | with_meta => ['class_has'], |
15 | class_metaroles => { |
16 | class => ['MooseX::ClassAttribute::Trait::Class'], |
17 | }, |
18 | role_metaroles => { |
19 | role => ['MooseX::ClassAttribute::Trait::Role'], |
20 | application_to_class => |
21 | ['MooseX::ClassAttribute::Trait::Application::ToClass'], |
22 | application_to_role => |
23 | ['MooseX::ClassAttribute::Trait::Application::ToRole'], |
24 | }, |
25 | ); |
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26 | |
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27 | sub class_has { |
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28 | my $meta = shift; |
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29 | my $name = shift; |
30 | my %options = @_; |
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31 | |
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32 | my $attrs = ref $name eq 'ARRAY' ? $name : [$name]; |
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33 | |
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34 | $meta->add_class_attribute( $_, %options ) for @{$attrs}; |
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35 | } |
36 | |
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37 | 1; |
38 | |
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39 | # ABSTRACT: Declare class attributes Moose-style |
40 | |
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41 | __END__ |
42 | |
43 | =pod |
44 | |
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45 | =head1 SYNOPSIS |
46 | |
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47 | package My::Class; |
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48 | |
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49 | use Moose; |
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50 | use MooseX::ClassAttribute; |
51 | |
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52 | class_has 'Cache' => |
53 | ( is => 'rw', |
54 | isa => 'HashRef', |
55 | default => sub { {} }, |
56 | ); |
57 | |
58 | __PACKAGE__->meta()->make_immutable(); |
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59 | |
60 | no Moose; |
61 | no MooseX::ClassAttribute; |
62 | |
63 | # then later ... |
64 | |
65 | My::Class->Cache()->{thing} = ...; |
66 | |
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67 | =head1 DESCRIPTION |
68 | |
69 | This module allows you to declare class attributes in exactly the same |
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70 | way as object attributes, using C<class_has()> instead of C<has()>. |
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71 | |
72 | You can use any feature of Moose's attribute declarations, including |
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73 | overriding a parent's attributes, delegation (C<handles>), attribute traits, |
74 | etc. All features should just work. The one exception is the "required" flag, |
75 | which is not allowed for class attributes. |
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76 | |
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77 | The accessor methods for class attribute may be called on the class |
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78 | directly, or on objects of that class. Passing a class attribute to |
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79 | the constructor will not set that attribute. |
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80 | |
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81 | =head1 FUNCTIONS |
82 | |
83 | This class exports one function when you use it, C<class_has()>. This |
84 | works exactly like Moose's C<has()>, but it declares class attributes. |
85 | |
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86 | One little nit is that if you include C<no Moose> in your class, you won't |
87 | remove the C<class_has()> function. To do that you must include C<no |
88 | MooseX::ClassAttribute> as well. Or you can just use L<namespace::autoclean> |
89 | instead. |
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90 | |
91 | =head2 Implementation and Immutability |
92 | |
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93 | This module will add a role to your class's metaclass, See |
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94 | L<MooseX::ClassAttribute::Trait::Class> for details. This role |
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95 | provides introspection methods for class attributes. |
96 | |
97 | Class attributes themselves do the |
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98 | L<MooseX::ClassAttribute::Trait::Attribute> role. |
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99 | |
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100 | There is also a L<MooseX::ClassAttribute::Meta::Method::Accessor> |
101 | which provides part of the inlining implementation for class |
102 | attributes. |
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103 | |
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104 | =head2 Cooperation with Metaclasses and Traits |
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105 | |
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106 | This module should work with most attribute metaclasses and traits, |
107 | but it's possible that conflicts could occur. This module has been |
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108 | tested to work with Moose's native traits. |
109 | |
110 | =head2 Class Attributes in Roles |
111 | |
112 | You can add a class attribute to a role. When that role is applied to a class, |
113 | the class will have the relevant class attributes added. Note that attribute |
114 | defaults will be calculated when the class attribute is composed into the |
115 | class. |
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116 | |
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117 | =head1 DONATIONS |
118 | |
119 | If you'd like to thank me for the work I've done on this module, |
120 | please consider making a "donation" to me via PayPal. I spend a lot of |
121 | free time creating free software, and would appreciate any support |
122 | you'd care to offer. |
123 | |
124 | Please note that B<I am not suggesting that you must do this> in order |
125 | for me to continue working on this particular software. I will |
126 | continue to do so, inasmuch as I have in the past, for as long as it |
127 | interests me. |
128 | |
129 | Similarly, a donation made in this way will probably not make me work |
130 | on this software much more, unless I get so many donations that I can |
131 | consider working on free software full time, which seems unlikely at |
132 | best. |
133 | |
134 | To donate, log into PayPal and send money to autarch@urth.org or use |
135 | the button on this page: |
136 | L<http://www.urth.org/~autarch/fs-donation.html> |
137 | |
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138 | =head1 BUGS |
139 | |
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140 | Please report any bugs or feature requests to |
141 | C<bug-moosex-classattribute@rt.cpan.org>, or through the web interface |
142 | at L<http://rt.cpan.org>. I will be notified, and then you'll |
143 | automatically be notified of progress on your bug as I make changes. |
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144 | |
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145 | =cut |