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407
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1 package IMPL::Code::BasePropertyImplementor;
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2 use strict;
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3
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4 use IMPL::Const qw(:prop :access);
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5 use Scalar::Util qw(looks_like_number);
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6
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7 use constant {
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8 CodeNoGetAccessor => 'die new IMPL::Exception(\'The property is write only\',$name,$class) unless $get;',
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9 CodeNoSetAccessor => 'die new IMPL::Exception(\'The property is read only\',$name,$class) unless $set;',
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10 CodeCustomGetAccessor => '$this->$get(@_);',
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11 CodeCustomSetAccessor => '$this->$set(@_);',
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12 CodeValidator => '$this->$validator(@_);',
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13 CodeOwnerCheck => "die new IMPL::Exception('Set accessor is restricted to the owner',\$name,\$class,scalar caller) unless caller eq \$class;"
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14 };
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15
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16 sub CodeSetAccessor {
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17 die new IMPL::Exception("Standard accessors not supported",'Set');
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18 }
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19
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20 sub CodeGetAccessor {
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21 die new IMPL::Exception("Standard accessors not supported",'Get');
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22 }
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23
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24 sub CodeGetListAccessor {
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25 die new IMPL::Exception("Standard accessors not supported",'GetList');
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26 }
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27
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28 sub CodeSetListAccessor {
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29 die new IMPL::Exception("Standard accessors not supported",'SetList');
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30 }
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31
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32 sub factoryParams { qw($class $name $set $get $validator) };
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33
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34 our %ACCESS_CODE = (
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35 ACCESS_PUBLIC , "",
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36 ACCESS_PROTECTED, "die new IMPL::Exception('Can\\'t access the protected member',\$name,\$class,scalar caller) unless UNIVERSAL::isa(scalar caller,\$class);",
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37 ACCESS_PRIVATE, "die new IMPL::Exception('Can\\'t access the private member',\$name,\$class,scalar caller) unless caller eq \$class;"
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38 );
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39
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40 sub NormalizeSpecification {
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41 my ($this,$spec) = @_;
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42
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43 return $spec if ref($spec);
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44
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45 if (looks_like_number($spec)) {
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46 return {
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47 get => $spec & PROP_GET,
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48 set => $spec & PROP_SET,
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49 isList => $spec & PROP_LIST,
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50 ownerSet => (($spec & PROP_OWNERSET) == PROP_OWNERSET),
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51 direct => $spec & PROP_DIRECT
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52 };
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421
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53 } elsif ($spec =~ /^(\*)?(ro?)?(w)?$/) {
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411
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54 return {
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55 get => $2 ? 1 : 0,
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417
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56 set => 1,
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57 ownerSet => not($3),
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411
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58 direct => $1 ? 1 : 0
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59 };
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407
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60 } else {
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421
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61 die IMPL::Exception->new("Invalid property specification","$spec");
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407
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62 }
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63 }
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64
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65 sub CreateFactoryId {
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66 my ($self, $spec) = @_;
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67
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68 join( '',
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69 map(
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70 ($_
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71 ? ( _isCustom($_)
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72 ? 'x'
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73 : 's')
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74 : '_'),
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75 @$spec{qw(get set)}
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76 ),
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77 $spec->{access} || ACCESS_PUBLIC,
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78 $spec->{validator} ? 'v' : '_',
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79 $spec->{isList} ? 'l' : '_',
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80 $spec->{ownerSet} ? 'o' : '_'
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81 );
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82 }
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83
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84 sub _isCustom {
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85 ref($_[0]) eq 'CODE' || not(ref($_[0]) || looks_like_number($_[0]));
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86 }
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87
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88 sub CreateFactory {
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89 my ($self,$spec) = @_;
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90
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91 return $self->CreateFactoryImpl(
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92 ($spec->{get}
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93 ? ( _isCustom($spec->{get})
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94 ? $self->CodeCustomGetAccessor
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95 : ($spec->{isList}
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96 ? $self->CodeGetListAccessor
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97 : $self->CodeGetAccessor
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98 )
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99 )
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100 : $self->CodeNoGetAccessor
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101 ),
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102 ($spec->{set}
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103 ? ( _isCustom($spec->{set})
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104 ? $self->CodeCustomSetAccessor
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105 : ($spec->{isList}
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106 ? $self->CodeSetListAccessor
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107 : $self->CodeSetAccessor
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108 )
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109 )
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110 : $self->CodeNoSetAccessor
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111 ),
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112 $ACCESS_CODE{$spec->{access} || ACCESS_PUBLIC} || '',
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113 $spec->{validator} ? $self->CodeValidator : '',
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114 $spec->{ownerSet} ? $self->CodeOwnerCheck : ''
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115 );
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116 }
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117
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118 sub CreateFactoryImpl {
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119 my ($self,$codeGet,$codeSet,$codeAccessCheck,$codeValidator,$codeOwnerCheck) = @_;
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120
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121 my $strParams = join(',',$self->factoryParams);
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122
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123 my $factory = <<FACTORY;
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124
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125 sub {
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126 my ($strParams) = \@_;
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127 return sub {
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128 my \$this = shift;
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129 $codeAccessCheck
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130 if (\@_) {
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131 $codeOwnerCheck
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132 $codeValidator
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133 $codeSet
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134 } else {
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135 $codeGet
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136 }
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137 }
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138 }
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139 FACTORY
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140
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141 return ( eval $factory or die new IMPL::Exception("Syntax error due compiling the factory","$@") );
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142 }
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143
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144
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145 1;
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146
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147 __END__
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148
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149 =pod
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150
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151 =head1 NAME
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152
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153 C<IMPL::Code::BasePropertyImplementor> набор впомогательныйх статических методов
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154 для генерации свойств.
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155
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156 =cut |
