annotate Lib/IMPL/Class/Meta.pm @ 54:f4e045e47770

commit
author wizard@linux-odin.local
date Tue, 02 Mar 2010 20:15:57 +0300
parents 16ada169ca75
children dc1da0389db7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
49
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
1 package IMPL::Class::Meta;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
2 use strict;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
3
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
4 my %class_meta;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
5
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
6 sub set_meta {
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
7 my ($class,$meta_data) = @_;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
8 $class = ref $class if ref $class;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
9
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
10 # тут нельзя использовать стандартное исключение, поскольку для него используется
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
11 # класс IMPL::Object::Accessor, который наследуется от текущего класса
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
12 die "The meta_data parameter should be an object" if not ref $meta_data;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
13
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
14 push @{$class_meta{$class}{ref $meta_data}},$meta_data;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
15 }
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
16
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
17 sub get_meta {
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
18 my ($class,$meta_class,$predicate,$deep) = @_;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
19 $class = ref $class if ref $class;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
20 no strict 'refs';
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
21 my @result;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
22
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
23 if ($deep) {
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
24 @result = map { $_->can('get_meta') ? $_->get_meta($meta_class,$predicate,$deep) : () } @{$class.'::ISA'};
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
25 }
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
26
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
27 if ($predicate) {
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
28 push @result,grep( &$predicate($_), map( @{$class_meta{$class}{$_}}, grep( $_->isa($meta_class), keys %{$class_meta{$class} || {}} ) ) );
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
29 } else {
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
30 push @result, map( @{$class_meta{$class}{$_} || []}, grep( $_->isa($meta_class), keys %{$class_meta{$class} || {}} ) );
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
31 }
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
32 wantarray ? @result : \@result;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
33 }
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
34
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
35 =pod
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
36 __PACKAGE_->set_meta($metaObject);
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
37 __PACKAGE_->get_meta('MyMetaClass',sub {
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
38 my ($item) = @_;
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
39 $item->Name eq 'Something' ? 1 : 0
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
40 } );
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
41 =cut
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
42
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
43 1;