Commit | Line | Data |
c3398f5b |
1 | #!/usr/bin/env perl |
2 | package Mouse::Object; |
3 | use strict; |
4 | use warnings; |
5 | use MRO::Compat; |
6 | |
7 | use Scalar::Util 'blessed'; |
8 | use Carp 'confess'; |
9 | |
10 | sub new { |
11 | my $class = shift; |
12 | my %args = @_; |
13 | my $instance = bless {}, $class; |
14 | |
15 | for my $attribute ($class->meta->attributes) { |
16 | my $key = $attribute->init_arg; |
17 | my $default; |
18 | |
19 | if (!exists($args{$key})) { |
20 | if (exists($attribute->{default})) { |
21 | unless ($attribute->{lazy}) { |
22 | if (ref($attribute->{default}) eq 'CODE') { |
23 | $instance->{$key} = $attribute->{default}->(); |
24 | Scalar::Util::weaken($instance->{$key}) |
25 | if $attribute->{weak_ref}; |
26 | } |
27 | else { |
28 | $instance->{$key} = $attribute->{default}; |
29 | Scalar::Util::weaken($instance->{$key}) |
30 | if $attribute->{weak_ref}; |
31 | } |
32 | } |
33 | } |
34 | else { |
35 | if ($attribute->{required}) { |
36 | confess "Attribute '$attribute->{name}' is required"; |
37 | } |
38 | } |
39 | } |
40 | |
41 | if (exists($args{$key})) { |
42 | $instance->{$key} = $args{$key}; |
43 | Scalar::Util::weaken($instance->{$key}) |
44 | if $attribute->{weak_ref}; |
45 | |
46 | if ($attribute->{trigger}) { |
47 | $attribute->{trigger}->($instance, $args{$key}, $attribute); |
48 | } |
49 | } |
50 | } |
51 | |
52 | $instance->BUILDALL(\%args); |
53 | |
54 | return $instance; |
55 | } |
56 | |
57 | sub DESTROY { shift->DEMOLISHALL } |
58 | |
59 | sub BUILDALL { |
60 | my $self = shift; |
61 | |
62 | # short circuit |
63 | return unless $self->can('BUILD'); |
64 | |
65 | no strict 'refs'; |
66 | |
67 | for my $class ($self->meta->linearized_isa) { |
68 | my $code = *{ $class . '::BUILD' }{CODE} |
69 | or next; |
70 | $code->($self, @_); |
71 | } |
72 | } |
73 | |
74 | sub DEMOLISHALL { |
75 | my $self = shift; |
76 | |
77 | # short circuit |
78 | return unless $self->can('DEMOLISH'); |
79 | |
80 | no strict 'refs'; |
81 | |
82 | for my $class ($self->meta->linearized_isa) { |
83 | my $code = *{ $class . '::DEMOLISH' }{CODE} |
84 | or next; |
85 | $code->($self, @_); |
86 | } |
87 | } |
88 | |
89 | 1; |
90 | |
91 | __END__ |
92 | |
93 | =head1 NAME |
94 | |
95 | Mouse::Object - we don't need to steenkin' constructor |
96 | |
97 | =head1 METHODS |
98 | |
99 | =head2 new arguments -> object |
100 | |
101 | Instantiates a new Mouse::Object. This is obviously intended for subclasses. |
102 | |
103 | =head2 BUILDALL \%args |
104 | |
105 | Calls L</BUILD> on each class in the class hierarchy. This is called at the |
106 | end of L</new>. |
107 | |
108 | =head2 BUILD \%args |
109 | |
110 | You may put any business logic initialization in BUILD methods. You don't |
111 | need to redispatch or return any specific value. |
112 | |
113 | =head2 DEMOLISHALL |
114 | |
115 | Calls L</DEMOLISH> on each class in the class hierarchy. This is called at |
116 | L</DESTROY> time. |
117 | |
118 | =head2 DEMOLISH |
119 | |
120 | You may put any business logic deinitialization in DEMOLISH methods. You don't |
121 | need to redispatch or return any specific value. |
122 | |
123 | =cut |
124 | |