Commit | Line | Data |
24869f62 |
1 | |
2 | package Class::MOP::Instance; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
7 | use Carp 'confess'; |
8 | use Scalar::Util 'blessed', 'reftype', 'weaken'; |
9 | |
10 | our $VERSION = '0.01'; |
11 | |
12 | sub meta { |
13 | require Class::MOP::Class; |
14 | Class::MOP::Class->initialize(blessed($_[0]) || $_[0]); |
15 | } |
16 | |
17 | sub new { |
052c2a1a |
18 | my ($class, $meta, @attrs) = @_; |
c57c8b10 |
19 | my @slots = map { $_->slots } @attrs; |
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20 | bless { |
fc3ddd1d |
21 | # NOTE: |
22 | # I am not sure that it makes |
23 | # sense to pass in the meta |
24 | # The ideal would be to just |
25 | # pass in the class name, but |
26 | # that is placing too much of |
27 | # an assumption on bless(), |
28 | # which is *probably* a safe |
29 | # assumption,.. but you can |
30 | # never tell <:) |
49c93440 |
31 | meta => $meta, |
052c2a1a |
32 | slots => \@slots, |
24869f62 |
33 | } => $class; |
34 | } |
35 | |
49c93440 |
36 | sub create_instance { |
37 | my $self = shift; |
38 | $self->bless_instance_structure({}); |
2d711cc8 |
39 | } |
40 | |
49c93440 |
41 | sub bless_instance_structure { |
42 | my ($self, $instance_structure) = @_; |
43 | bless $instance_structure, $self->{meta}->name; |
2d711cc8 |
44 | } |
45 | |
46 | # operations on meta instance |
47 | |
eb49acde |
48 | sub get_all_slots { |
49 | my $self = shift; |
49c93440 |
50 | return @{$self->{slots}}; |
839ea973 |
51 | } |
52 | |
2d711cc8 |
53 | # operations on created instances |
54 | |
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55 | sub get_slot_value { |
2bab2be6 |
56 | my ($self, $instance, $slot_name) = @_; |
57 | return $instance->{$slot_name}; |
839ea973 |
58 | } |
59 | |
2bab2be6 |
60 | sub set_slot_value { |
61 | my ($self, $instance, $slot_name, $value) = @_; |
62 | $instance->{$slot_name} = $value; |
63 | } |
64 | |
2d711cc8 |
65 | sub initialize_slot { |
49c93440 |
66 | my ($self, $instance, $slot_name) = @_; |
67 | $instance->{$slot_name} = undef; |
2d711cc8 |
68 | } |
69 | |
c174112e |
70 | sub initialize_all_slots { |
71 | my ($self, $instance) = @_; |
72 | foreach my $slot_name ($self->get_all_slots) { |
73 | $self->initialize_slot($instance, $slot_name); |
74 | } |
75 | } |
76 | |
49c93440 |
77 | sub is_slot_initialized { |
78 | my ($self, $instance, $slot_name, $value) = @_; |
2d711cc8 |
79 | exists $instance->{$slot_name} ? 1 : 0; |
2bab2be6 |
80 | } |
839ea973 |
81 | |
24869f62 |
82 | 1; |
83 | |
84 | __END__ |
85 | |
86 | =pod |
87 | |
88 | =head1 NAME |
89 | |
90 | Class::MOP::Instance - Instance Meta Object |
91 | |
92 | =head1 SYNOPSIS |
93 | |
94 | =head1 DESCRIPTION |
95 | |
96 | =head1 METHODS |
97 | |
98 | =over 4 |
99 | |
100 | =item B<new> |
101 | |
58287a97 |
102 | =item B<create_instance> |
103 | |
0e76a376 |
104 | =item B<bless_instance_structure> |
105 | |
49c93440 |
106 | =item B<get_all_slots> |
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107 | |
0e76a376 |
108 | =item B<initialize_all_slots> |
109 | |
839ea973 |
110 | =item B<get_slot_value> |
111 | |
49c93440 |
112 | =item B<set_slot_value> |
58287a97 |
113 | |
114 | =item B<initialize_slot> |
115 | |
49c93440 |
116 | =item B<is_slot_initialized> |
58287a97 |
117 | |
24869f62 |
118 | =back |
119 | |
120 | =head2 Introspection |
121 | |
122 | =over 4 |
123 | |
124 | =item B<meta> |
125 | |
126 | This will return a B<Class::MOP::Class> instance which is related |
127 | to this class. |
128 | |
129 | =back |
130 | |
131 | =head1 AUTHOR |
132 | |
133 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
134 | |
135 | =head1 COPYRIGHT AND LICENSE |
136 | |
137 | Copyright 2006 by Infinity Interactive, Inc. |
138 | |
139 | L<http://www.iinteractive.com> |
140 | |
141 | This library is free software; you can redistribute it and/or modify |
142 | it under the same terms as Perl itself. |
143 | |
84ef30d1 |
144 | =cut |