annotate Lib/IMPL/Class/PropertyInfo.pm @ 219:c477f24f1980

sync
author sergey
date Tue, 21 Aug 2012 17:13:47 +0400
parents a8db61d0ed33
children 431db7034a88
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1 package IMPL::Class::PropertyInfo;
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2 use strict;
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3 use IMPL::_core::version;
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4
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5 use IMPL::declare {
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6 base =>{
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7 'IMPL::Class::MemberInfo' => '@_'
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8 }
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9 };
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10
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11 __PACKAGE__->mk_accessors(qw(Type Mutators canGet canSet ownerSet));
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12
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13 my %LoadedModules;
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14
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15 sub CTOR {
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16 my $this = shift;
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17
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18 if ( my $type = $this->Attributes ? delete $this->Attributes->{type} : undef ) {
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19 $this->Type($type);
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20 }
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21
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22 $this->Mutators(0) unless defined $this->Mutators;
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23 }
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24
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25 sub Implementor {
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26 my $this = shift;
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27
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28 if (@_) {
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29 $this->SUPER::Implementor(@_);
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30 } else {
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31 my $implementor = $this->SUPER::Implementor;
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32 return $implementor if $implementor;
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33
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34 $implementor = $this->SelectImplementor();
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35
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36 if (my $class = ref $implementor ? undef : $implementor) {
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37 eval "require $class; 1;" or die $@ unless $LoadedModules{$class}++;
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38 }
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40 $this->Implementor($implementor);
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41 }
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42
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43 }
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45 sub SelectImplementor {
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46 eval {$_[0]->Class->_PropertyImplementor} or die new IMPL::Exception('Can\'t find a property implementor for the specified class',$_[0]->Class);
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47 }
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48
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49 1;
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50
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51 __END__
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52
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53 =pod
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54
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55 =head1 NAME
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56
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57 C<IMPL::Class::PropertyInfo> - метаданные о свойствах объектов. Используются для отражения и
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58 проверки данных объектов.
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59
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60 =head1 DESCRIPTION
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61
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62 В зависимости от типа каждый объект предоставляет способ хранения данных, например хеши позволяют
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63 хранить состояние в виде ассоциативного массива и т.д. Информация о свойстве предоставляет определенный
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64 уровень абстракции.
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65
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66 =cut