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1 package IMPL::Class::Meta;
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2 use strict;
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3
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4 my %class_meta;
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5
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6 sub set_meta {
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7 my ($class,$meta_data) = @_;
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8 $class = ref $class if ref $class;
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9
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10 # òóò íåëüçÿ èñïîëüçîâàòü ñòàíäàðòíîå èñêëþ÷åíèå, ïîñêîëüêó äëÿ íåãî èñïîëüçóåòñÿ
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11 # êëàññ IMPL::Object::Accessor, êîòîðûé íàñëåäóåòñÿ îò òåêóùåãî êëàññà
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12 die "The meta_data parameter should be an object" if not ref $meta_data;
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13
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14 push @{$class_meta{$class}{ref $meta_data}},$meta_data;
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15 }
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16
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17 sub get_meta {
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18 my ($class,$meta_class,$predicate,$deep) = @_;
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19 $class = ref $class if ref $class;
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20 no strict 'refs';
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21 my @result;
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22
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23 if ($deep) {
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24 @result = map { $_->can('get_meta') ? $_->get_meta($meta_class,$predicate,$deep) : () } @{$class.'::ISA'};
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25 }
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26
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27 if ($predicate) {
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28 push @result,grep( &$predicate($_), map( @{$class_meta{$class}{$_}}, grep( $_->isa($meta_class), keys %{$class_meta{$class} || {}} ) ) );
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29 } else {
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30 push @result, map( @{$class_meta{$class}{$_} || []}, grep( $_->isa($meta_class), keys %{$class_meta{$class} || {}} ) );
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31 }
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32 wantarray ? @result : \@result;
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33 }
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34
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35 =pod
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36 __PACKAGE_->set_meta($metaObject);
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37 __PACKAGE_->get_meta('MyMetaClass',sub {
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38 my ($item) = @_;
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39 $item->Name eq 'Something' ? 1 : 0
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40 } );
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41 =cut
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42
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43 1; |
