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#!/usr/bin/perl |
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package KiokuDB::TypeMap::Entry::StorableHook; |
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26353
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use Moose; |
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339210
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use Scalar::Util qw(reftype); |
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863
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use Carp qw(croak); |
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no warnings 'recursion'; |
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# predeclare for namespace::clean; |
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sub _type ($); |
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sub _new ($;$); |
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sub _clear ($); |
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use namespace::clean -except => 'meta'; |
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with qw( |
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KiokuDB::TypeMap::Entry::Std |
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KiokuDB::TypeMap::Entry::Std::Expand |
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); |
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sub compile_collapse_body { |
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my ( $self, $class, @args ) = @_; |
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my $attach = $class->can("STORABLE_attach") ? 1 : 0; |
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return sub { |
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my ( $self, %args ) = @_; |
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my $object = $args{object}; |
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my @type = _type($object); |
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my ( $str, @refs ) = $object->STORABLE_freeze(0); |
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my $data; |
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if ( @refs ) { |
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croak sprintf "Freeze cannot return references if %s class is using STORABLE_attach", $class if $attach; |
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if ( my @non_refs = grep { not ref } @refs ) { |
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croak blessed($object) . "::STORABLE_freeze returned non reference values: @non_refs"; |
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} |
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my @collapsed = $self->visit(@refs); |
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foreach my $ref ( @collapsed ) { |
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next unless ref($ref) eq 'KiokuDB::Reference'; |
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next if $self->may_compact($ref); |
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$ref = $ref->id; # don't save a bunch of Reference objects when all we need is the ID |
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} |
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$data = [ @type, $str, @collapsed ], |
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} else { |
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unless ( $attach ) { |
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1
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if ( @type == 1 ) { |
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$data = ( $type[0] . $str ); |
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} else { |
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$data = [ @type, $str ]; |
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} |
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} else { |
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$data = $str; |
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} |
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} |
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return $self->make_entry( |
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%args, |
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data => $data, |
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); |
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381
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}; |
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} |
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74
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sub compile_create { |
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my ( $self, $class, @args ) = @_; |
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77
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unless ( $class->can("STORABLE_attach") ) { |
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# normal form, STORABLE_freeze |
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return sub { |
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102
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my ( $self, $entry ) = @_; |
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921
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my $data = $entry->data; |
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84
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100
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my ( $reftype, @args ) = ref $data ? @$data : ( substr($data, 0, 1), substr($data, 1) ); |
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my $instance; |
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426
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if ( ref $args[0] ) { |
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my $tied; |
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0
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$self->queue_ref(shift(@args), \$tied); |
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$instance = _new( $reftype, $tied ); |
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} else { |
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$instance = _new( $reftype ); |
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} |
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96
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878
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bless $instance, $entry->class; |
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283
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}; |
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} else { |
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# esotheric STORABLE_attach form |
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return sub { |
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0
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0
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my ( $self, $entry ) = @_; |
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103
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0
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$entry->class->STORABLE_attach( 0, $entry->data ); # FIXME support non ref |
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}; |
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} |
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} |
107
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108
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sub compile_clear { |
109
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36
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36
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0
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70
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my ( $self, $class, @args ) = @_; |
110
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111
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return sub { |
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0
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0
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my ( $linker, $instance ) = @_; |
113
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114
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0
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0
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_clear($instance); |
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221
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}; |
116
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} |
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118
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sub compile_expand_data { |
119
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72
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0
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133
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my ( $self, $class, @args ) = @_; |
120
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121
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72
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50
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276
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unless ( $class->can("STORABLE_attach") ) { |
122
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# normal form, STORABLE_freeze |
123
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return sub { |
124
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36
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36
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78
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my ( $self, $instance, $entry ) = @_; |
125
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126
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36
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849
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my $data = $entry->data; |
127
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128
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36
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100
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207
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my ( $reftype, @args ) = ref $data ? @$data : ( substr($data, 0, 1), substr($data, 1) ); |
129
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130
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36
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50
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172
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shift @args if ref $args[0]; # tied |
131
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132
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36
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92
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my ( $str, @refs ) = @args; |
133
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134
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36
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53
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my @inflated; |
135
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136
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36
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113
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foreach my $ref ( @refs ) { |
137
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68
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88
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push @inflated, undef; |
138
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139
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68
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50
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150
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if ( ref $ref ) { |
140
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68
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281
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$self->inflate_data($ref, \$inflated[-1]); |
141
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} else { |
142
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0
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0
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$self->queue_ref($ref, \$inflated[-1]); |
143
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} |
144
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} |
145
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146
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$self->queue_finalizer(sub { |
147
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36
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276
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$instance->STORABLE_thaw( 0, $str, @inflated ); |
148
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317
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}); |
149
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486
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}; |
150
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} else { |
151
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# esotheric STORABLE_attach form |
152
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0
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0
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return sub { }; |
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153
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} |
154
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} |
155
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156
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sub _type ($) { |
157
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my $obj = shift; |
158
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159
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my $type = reftype($obj); |
160
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161
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if ( $type eq 'SCALAR' or $type eq 'REF' ) { |
162
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if ( my $tied = tied $$obj ) { |
163
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return ( S => $tied ); |
164
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} else { |
165
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return 'S'; |
166
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} |
167
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} elsif ( $type eq 'HASH' ) { |
168
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if ( my $tied = tied %$obj ) { |
169
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return ( H => $tied ); |
170
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} else { |
171
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return 'H'; |
172
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} |
173
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} elsif ( $type eq 'ARRAY' ) { |
174
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if ( my $tied = tied @$obj ) { |
175
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return ( A => $tied ); |
176
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} else { |
177
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return 'A'; |
178
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} |
179
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} else { |
180
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croak sprintf "Unexpected object type (%s)", reftype($obj); |
181
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} |
182
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} |
183
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184
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sub _new ($;$) { |
185
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my ( $type, $tied ) = @_; |
186
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187
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if ( $type eq 'S' ) { |
188
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my $ref = \( my $x ); |
189
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tie $x, "To::Object", $tied if ref $tied; |
190
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return $ref; |
191
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} elsif ( $type eq 'H' ) { |
192
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my $ref = {}; |
193
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tie %$ref, "To::Object", $tied if ref $tied; |
194
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return $ref; |
195
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} elsif ( $type eq 'A' ) { |
196
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my $ref = []; |
197
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tie @$ref, "To::Object", $tied if ref $tied; |
198
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return $ref; |
199
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} else { |
200
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croak sprintf "Unexpected object type (%d)", $type; |
201
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} |
202
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} |
203
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204
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sub _clear ($) { |
205
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my $obj = shift; |
206
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207
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my $type = reftype($obj); |
208
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209
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if ( $type eq 'SCALAR' or $type eq 'REF' ) { |
210
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undef $$obj; |
211
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} elsif ( $type eq 'HASH' ) { |
212
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%$obj = (); |
213
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} elsif ( $type eq 'ARRAY' ) { |
214
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@$obj = (); |
215
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} else { |
216
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croak sprintf "Unexpected object type (%s)", reftype($obj); |
217
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} |
218
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} |
219
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220
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221
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__PACKAGE__->meta->make_immutable; |
222
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223
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__PACKAGE__ |
224
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225
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__END__ |
226
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227
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=pod |
228
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229
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=head1 NAME |
230
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231
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KiokuDB::TypeMap::Entry::StorableHook - Reuse existing L<Storable> hooks for |
232
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L<KiokuDB> storage. |
233
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234
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=head1 SYNOPSIS |
235
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236
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use KiokuDB::TypeMap::Entry::StorableHook; |
237
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238
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=head1 DESCRIPTION |
239
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240
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=cut |
241
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242
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