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fcd84ca9 |
1 | |
2 | package Moose::Object; |
3 | |
4 | use strict; |
5 | use warnings; |
648e79ae |
6 | |
ae736ff4 |
7 | use Devel::GlobalDestruction qw(in_global_destruction); |
61c4a4cd |
8 | use MRO::Compat; |
9 | use Scalar::Util; |
2eaf25da |
10 | |
9922fa6f |
11 | use if ( not our $__mx_is_compiled ), 'Moose::Meta::Class'; |
12 | use if ( not our $__mx_is_compiled ), metaclass => 'Moose::Meta::Class'; |
bc1e29b5 |
13 | |
6fdf3dfa |
14 | our $VERSION = '0.88'; |
e606ae5f |
15 | $VERSION = eval $VERSION; |
d44714be |
16 | our $AUTHORITY = 'cpan:STEVAN'; |
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17 | |
18 | sub new { |
2c0cbef7 |
19 | my $class = shift; |
2eaf25da |
20 | |
e606ae5f |
21 | my $params = $class->BUILDARGS(@_); |
2eaf25da |
22 | |
23 | # We want to support passing $self->new, but initialize |
24 | # takes only an unblessed class name |
25 | my $real_class = Scalar::Util::blessed($class) || $class; |
caefeda2 |
26 | |
27 | # this provides a hook to allow subclasses, roles, traits etc a chance to change |
28 | # how the class will behave |
29 | my $built_class = $real_class->BUILDALLCLASS($params); |
30 | |
31 | my $self = Class::MOP::Class->initialize($built_class)->new_object($params); |
2eaf25da |
32 | |
e606ae5f |
33 | $self->BUILDALL($params); |
2eaf25da |
34 | |
e606ae5f |
35 | return $self; |
36 | } |
37 | |
38 | sub BUILDARGS { |
39 | my $class = shift; |
a62dcd43 |
40 | if ( scalar @_ == 1 ) { |
41 | unless ( defined $_[0] && ref $_[0] eq 'HASH' ) { |
46047bea |
42 | Class::MOP::class_of($class)->throw_error( |
a62dcd43 |
43 | "Single parameters to new() must be a HASH ref", |
44 | data => $_[0] ); |
86629f93 |
45 | } |
a62dcd43 |
46 | return { %{ $_[0] } }; |
47 | } |
8a157bab |
48 | else { |
e606ae5f |
49 | return {@_}; |
8a157bab |
50 | } |
fcd84ca9 |
51 | } |
52 | |
c0e30cf5 |
53 | sub BUILDALL { |
d03bd989 |
54 | # NOTE: we ask Perl if we even |
d44714be |
55 | # need to do this first, to avoid |
56 | # extra meta level calls |
d03bd989 |
57 | return unless $_[0]->can('BUILD'); |
fb1e11d5 |
58 | my ($self, $params) = @_; |
505033d9 |
59 | foreach my $method (reverse Class::MOP::class_of($self)->find_all_methods_by_name('BUILD')) { |
b8f014e7 |
60 | $method->{code}->execute($self, $params); |
fb1e11d5 |
61 | } |
c0e30cf5 |
62 | } |
63 | |
caefeda2 |
64 | |
65 | sub BUILDALLCLASS { |
66 | # NOTE: we ask Perl if we even |
67 | # need to do this first, to avoid |
68 | # extra meta level calls |
69 | return $_[0] unless $_[0]->can('BUILDCLASS'); |
70 | my ($class, $params) = @_; |
71 | foreach my $method (reverse Class::MOP::class_of($class)->find_all_methods_by_name('BUILDCLASS')) { |
72 | $class = $method->{code}->execute($class, $params); |
73 | } |
74 | return $class; |
75 | } |
76 | |
c0e30cf5 |
77 | sub DEMOLISHALL { |
8955a780 |
78 | my $self = shift; |
d9359278 |
79 | my ($in_global_destruction) = @_; |
8955a780 |
80 | |
81 | # NOTE: we ask Perl if we even |
cb5c79c9 |
82 | # need to do this first, to avoid |
8955a780 |
83 | # extra meta level calls |
cb5c79c9 |
84 | return unless $self->can('DEMOLISH'); |
8955a780 |
85 | |
2bc1eab6 |
86 | my @isa; |
87 | if ( my $meta = Class::MOP::class_of($self ) ) { |
88 | @isa = $meta->linearized_isa; |
89 | } else { |
90 | # We cannot count on being able to retrieve a previously made |
91 | # metaclass, _or_ being able to make a new one during global |
92 | # destruction. However, we should still be able to use mro at |
93 | # that time (at least tests suggest so ;) |
94 | my $class_name = ref $self; |
95 | @isa = @{ mro::get_linear_isa($class_name) } |
96 | } |
97 | |
98 | foreach my $class (@isa) { |
c063fc8b |
99 | no strict 'refs'; |
100 | my $demolish = *{"${class}::DEMOLISH"}{CODE}; |
101 | $self->$demolish($in_global_destruction) |
102 | if defined $demolish; |
3a0c064a |
103 | } |
104 | } |
105 | |
d03bd989 |
106 | sub DESTROY { |
3a0c064a |
107 | # if we have an exception here ... |
ca0e380d |
108 | if ($@) { |
109 | # localize the $@ ... |
110 | local $@; |
3a0c064a |
111 | # run DEMOLISHALL ourselves, ... |
ae736ff4 |
112 | $_[0]->DEMOLISHALL(in_global_destruction); |
3a0c064a |
113 | # and return ... |
114 | return; |
115 | } |
ca0e380d |
116 | # otherwise it is normal destruction |
ae736ff4 |
117 | $_[0]->DEMOLISHALL(in_global_destruction); |
c0e30cf5 |
118 | } |
119 | |
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120 | # support for UNIVERSAL::DOES ... |
121 | BEGIN { |
122 | my $does = UNIVERSAL->can("DOES") ? "SUPER::DOES" : "isa"; |
123 | eval 'sub DOES { |
124 | my ( $self, $class_or_role_name ) = @_; |
125 | return $self->'.$does.'($class_or_role_name) |
126 | || $self->does($class_or_role_name); |
127 | }'; |
128 | } |
129 | |
d03bd989 |
130 | # new does() methods will be created |
50bc108b |
131 | # as appropiate see Moose::Meta::Role |
0677220d |
132 | sub does { |
bdabd620 |
133 | my ($self, $role_name) = @_; |
66d33a5c |
134 | my $meta = Class::MOP::class_of($self); |
be05faea |
135 | (defined $role_name) |
136 | || $meta->throw_error("You much supply a role name to does()"); |
bdabd620 |
137 | foreach my $class ($meta->class_precedence_list) { |
587e457d |
138 | my $m = $meta->initialize($class); |
d03bd989 |
139 | return 1 |
140 | if $m->can('does_role') && $m->does_role($role_name); |
bdabd620 |
141 | } |
d03bd989 |
142 | return 0; |
0677220d |
143 | } |
ef333f17 |
144 | |
d03bd989 |
145 | sub dump { |
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146 | my $self = shift; |
147 | require Data::Dumper; |
1a386a6c |
148 | local $Data::Dumper::Maxdepth = shift if @_; |
f742dfef |
149 | Data::Dumper::Dumper $self; |
150 | } |
151 | |
fcd84ca9 |
152 | 1; |
153 | |
154 | __END__ |
155 | |
156 | =pod |
157 | |
158 | =head1 NAME |
159 | |
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160 | Moose::Object - The base object for Moose |
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161 | |
fcd84ca9 |
162 | =head1 DESCRIPTION |
163 | |
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164 | This class is the default base class for all Moose-using classes. When |
165 | you C<use Moose> in this class, your class will inherit from this |
166 | class. |
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167 | |
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168 | It provides a default constructor and destructor, which run the |
169 | C<BUILDALL> and C<DEMOLISHALL> methods respectively. |
170 | |
171 | You don't actually I<need> to inherit from this in order to use Moose, |
172 | but it makes it easier to take advantage of all of Moose's features. |
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173 | |
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174 | =head1 METHODS |
175 | |
176 | =over 4 |
177 | |
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178 | =item B<< Moose::Object->new(%params) >> |
179 | |
180 | This method calls C<< $class->BUILDARGS(@_) >>, and then creates a new |
181 | instance of the appropriate class. Once the instance is created, it |
182 | calls C<< $instance->BUILDALL($params) >>. |
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183 | |
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184 | =item B<< Moose::Object->BUILDARGS(%params) >> |
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185 | |
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186 | The default implementation of this method accepts a hash or hash |
187 | reference of named parameters. If it receives a single argument that |
188 | I<isn't> a hash reference it throws an error. |
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189 | |
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190 | You can override this method in your class to handle other types of |
191 | options passed to the constructor. |
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192 | |
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193 | This method should always return a hash reference of named options. |
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194 | |
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195 | =item B<< $object->BUILDALL($params) >> |
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196 | |
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197 | This method will call every C<BUILD> method in the inheritance |
198 | hierarchy, starting with the most distant parent class and ending with |
199 | the object's class. |
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200 | |
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201 | The C<BUILD> method will be passed the hash reference returned by |
202 | C<BUILDARGS>. |
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203 | |
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204 | =item B<< $object->DEMOLISHALL >> |
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205 | |
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206 | This will call every C<DEMOLISH> method in the inheritance hierarchy, |
207 | starting with the object's class and ending with the most distant |
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208 | parent. C<DEMOLISHALL> and C<DEMOLISH> will receive a boolean |
209 | indicating whether or not we are currently in global destruction. |
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210 | |
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211 | =item B<< $object->does($role_name) >> |
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212 | |
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213 | This returns true if the object does the given role. |
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214 | |
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215 | =item B<DOES ($class_or_role_name)> |
216 | |
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217 | This is a a Moose role-aware implementation of L<UNIVERSAL/DOES>. |
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218 | |
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219 | This is effectively the same as writing: |
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220 | |
080e3614 |
221 | $object->does($name) || $object->isa($name) |
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222 | |
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223 | This method will work with Perl 5.8, which did not implement |
224 | C<UNIVERSAL::DOES>. |
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225 | |
080e3614 |
226 | =item B<< $object->dump($maxdepth) >> |
f742dfef |
227 | |
080e3614 |
228 | This is a handy utility for C<Data::Dumper>ing an object. By default, |
229 | the maximum depth is 1, to avoid making a mess. |
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230 | |
fcd84ca9 |
231 | =back |
232 | |
233 | =head1 BUGS |
234 | |
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235 | All complex software has bugs lurking in it, and this module is no |
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236 | exception. If you find a bug please either email me, or add the bug |
237 | to cpan-RT. |
238 | |
fcd84ca9 |
239 | =head1 AUTHOR |
240 | |
241 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
242 | |
243 | =head1 COPYRIGHT AND LICENSE |
244 | |
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245 | Copyright 2006-2009 by Infinity Interactive, Inc. |
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246 | |
247 | L<http://www.iinteractive.com> |
248 | |
249 | This library is free software; you can redistribute it and/or modify |
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250 | it under the same terms as Perl itself. |
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251 | |
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252 | =cut |