Commit | Line | Data |
22aed3c0 |
1 | |
2 | package Moose::Meta::TypeConstraint::Registry; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | use metaclass; |
7 | |
8 | use Scalar::Util 'blessed'; |
9 | use Carp 'confess'; |
10 | |
11 | our $VERSION = '0.01'; |
12 | our $AUTHORITY = 'cpan:STEVAN'; |
13 | |
14 | use base 'Class::MOP::Object'; |
15 | |
183ba44e |
16 | __PACKAGE__->meta->add_attribute('parent_registry' => ( |
17 | reader => 'get_parent_registry', |
18 | writer => 'set_parent_registry', |
19 | predicate => 'has_parent_registry', |
20 | )); |
21 | |
22aed3c0 |
22 | __PACKAGE__->meta->add_attribute('type_constraints' => ( |
23 | reader => 'type_constraints', |
24 | default => sub { {} } |
25 | )); |
26 | |
27 | sub new { |
28 | my $class = shift; |
29 | my $self = $class->meta->new_object(@_); |
30 | return $self; |
31 | } |
32 | |
33 | sub has_type_constraint { |
34 | my ($self, $type_name) = @_; |
35 | exists $self->type_constraints->{$type_name} ? 1 : 0 |
36 | } |
37 | |
38 | sub get_type_constraint { |
39 | my ($self, $type_name) = @_; |
40 | $self->type_constraints->{$type_name} |
41 | } |
42 | |
43 | sub add_type_constraint { |
44 | my ($self, $type) = @_; |
45 | $self->type_constraints->{$type->name} = $type; |
46 | } |
47 | |
183ba44e |
48 | sub find_type_constraint { |
49 | my ($self, $type_name) = @_; |
50 | return $self->get_type_constraint($type_name) |
51 | if $self->has_type_constraint($type_name); |
52 | return $self->get_parent_registry->find_type_constraint($type_name) |
53 | if $self->has_parent_registry; |
54 | return; |
55 | } |
56 | |
22aed3c0 |
57 | 1; |
58 | |
59 | __END__ |
60 | |
61 | |
62 | =pod |
63 | |
64 | =head1 NAME |
65 | |
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66 | Moose::Meta::TypeConstraint::Registry - registry for type constraints |
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67 | |
68 | =head1 DESCRIPTION |
69 | |
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70 | This module is currently only use internally by L<Moose::Util::TypeConstraints>. |
71 | It can be used to create your own private type constraint registry as well, but |
72 | the details of that are currently left as an exercise to the reader. (One hint: |
73 | You can use the 'parent_registry' feature to connect your private version with the |
74 | base Moose registry and base Moose types will automagically be found too). |
75 | |
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76 | =head1 METHODS |
77 | |
78 | =over 4 |
79 | |
80 | =item B<meta> |
81 | |
82 | =item B<new> |
83 | |
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84 | =item B<get_parent_registry> |
85 | |
86 | =item B<set_parent_registry ($registry)> |
87 | |
88 | =item B<has_parent_registry> |
89 | |
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90 | =item B<type_constraints> |
91 | |
183ba44e |
92 | =item B<has_type_constraint ($type_name)> |
93 | |
94 | =item B<get_type_constraint ($type_name)> |
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95 | |
183ba44e |
96 | =item B<add_type_constraint ($type)> |
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97 | |
183ba44e |
98 | =item B<find_type_constraint ($type_name)> |
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99 | |
100 | =back |
101 | |
102 | =head1 BUGS |
103 | |
104 | All complex software has bugs lurking in it, and this module is no |
105 | exception. If you find a bug please either email me, or add the bug |
106 | to cpan-RT. |
107 | |
108 | =head1 AUTHOR |
109 | |
110 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
111 | |
112 | =head1 COPYRIGHT AND LICENSE |
113 | |
114 | Copyright 2006, 2007 by Infinity Interactive, Inc. |
115 | |
116 | L<http://www.iinteractive.com> |
117 | |
118 | This library is free software; you can redistribute it and/or modify |
119 | it under the same terms as Perl itself. |
120 | |
121 | =cut |