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#line 1 |
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package YAML::Node; |
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use strict; use warnings; |
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use YAML::Base; use base 'YAML::Base'; |
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1418
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use YAML::Tag; |
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our @EXPORT = qw(ynode); |
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sub ynode { |
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my $self; |
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if (ref($_[0]) eq 'HASH') { |
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$self = tied(%{$_[0]}); |
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} |
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elsif (ref($_[0]) eq 'ARRAY') { |
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$self = tied(@{$_[0]}); |
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} |
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else { |
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$self = tied($_[0]); |
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} |
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return (ref($self) =~ /^yaml_/) ? $self : undef; |
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} |
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sub new { |
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my ($class, $node, $tag) = @_; |
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my $self; |
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$self->{NODE} = $node; |
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my (undef, $type) = $class->node_info($node); |
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$self->{KIND} = (not defined $type) ? 'scalar' : |
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($type eq 'ARRAY') ? 'sequence' : |
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($type eq 'HASH') ? 'mapping' : |
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$class->die("Can't create YAML::Node from '$type'"); |
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tag($self, ($tag || '')); |
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if ($self->{KIND} eq 'scalar') { |
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yaml_scalar->new($self, $_[1]); |
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return \ $_[1]; |
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} |
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my $package = "yaml_" . $self->{KIND}; |
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$package->new($self) |
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} |
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sub node { $_->{NODE} } |
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sub kind { $_->{KIND} } |
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sub tag { |
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my ($self, $value) = @_; |
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if (defined $value) { |
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$self->{TAG} = YAML::Tag->new($value); |
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return $self; |
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} |
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else { |
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return $self->{TAG}; |
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} |
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} |
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sub keys { |
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my ($self, $value) = @_; |
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if (defined $value) { |
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$self->{KEYS} = $value; |
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return $self; |
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} |
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else { |
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return $self->{KEYS}; |
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} |
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} |
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64
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#============================================================================== |
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package yaml_scalar; |
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@yaml_scalar::ISA = qw(YAML::Node); |
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sub new { |
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my ($class, $self) = @_; |
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tie $_[2], $class, $self; |
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} |
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sub TIESCALAR { |
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my ($class, $self) = @_; |
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bless $self, $class; |
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$self |
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} |
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79
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sub FETCH { |
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my ($self) = @_; |
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$self->{NODE} |
82
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} |
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84
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sub STORE { |
85
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my ($self, $value) = @_; |
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$self->{NODE} = $value |
87
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} |
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89
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#============================================================================== |
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package yaml_sequence; |
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@yaml_sequence::ISA = qw(YAML::Node); |
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93
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0
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sub new { |
94
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my ($class, $self) = @_; |
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my $new; |
96
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tie @$new, $class, $self; |
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$new |
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} |
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100
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sub TIEARRAY { |
101
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my ($class, $self) = @_; |
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bless $self, $class |
103
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} |
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105
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sub FETCHSIZE { |
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my ($self) = @_; |
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107
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scalar @{$self->{NODE}}; |
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} |
109
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110
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0
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sub FETCH { |
111
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my ($self, $index) = @_; |
112
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$self->{NODE}[$index] |
113
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} |
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115
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sub STORE { |
116
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my ($self, $index, $value) = @_; |
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$self->{NODE}[$index] = $value |
118
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} |
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120
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sub undone { |
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die "Not implemented yet"; # XXX |
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} |
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124
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*STORESIZE = *POP = *PUSH = *SHIFT = *UNSHIFT = *SPLICE = *DELETE = *EXISTS = |
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*STORESIZE = *POP = *PUSH = *SHIFT = *UNSHIFT = *SPLICE = *DELETE = *EXISTS = |
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*undone; # XXX Must implement before release |
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128
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#============================================================================== |
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package yaml_mapping; |
130
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@yaml_mapping::ISA = qw(YAML::Node); |
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132
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0
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0
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sub new { |
133
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0
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my ($class, $self) = @_; |
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134
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@{$self->{KEYS}} = sort keys %{$self->{NODE}}; |
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0
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my $new; |
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0
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tie %$new, $class, $self; |
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$new |
138
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} |
139
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140
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0
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0
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sub TIEHASH { |
141
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0
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my ($class, $self) = @_; |
142
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bless $self, $class |
143
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} |
144
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145
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0
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0
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sub FETCH { |
146
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0
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0
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my ($self, $key) = @_; |
147
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0
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0
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if (exists $self->{NODE}{$key}) { |
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0
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148
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return (grep {$_ eq $key} @{$self->{KEYS}}) |
149
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? $self->{NODE}{$key} : undef; |
150
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0
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} |
151
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return $self->{HASH}{$key}; |
152
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} |
153
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154
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0
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0
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sub STORE { |
155
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0
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0
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my ($self, $key, $value) = @_; |
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0
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156
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0
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if (exists $self->{NODE}{$key}) { |
157
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$self->{NODE}{$key} = $value; |
158
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} |
159
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0
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elsif (exists $self->{HASH}{$key}) { |
160
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$self->{HASH}{$key} = $value; |
161
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} |
162
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0
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0
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else { |
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0
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0
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163
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if (not grep {$_ eq $key} @{$self->{KEYS}}) { |
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164
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push(@{$self->{KEYS}}, $key); |
165
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0
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} |
166
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$self->{HASH}{$key} = $value; |
167
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0
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} |
168
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$value |
169
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} |
170
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171
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0
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sub DELETE { |
172
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my ($self, $key) = @_; |
173
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0
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0
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my $return; |
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0
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174
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if (exists $self->{NODE}{$key}) { |
175
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$return = $self->{NODE}{$key}; |
176
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} |
177
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0
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elsif (exists $self->{HASH}{$key}) { |
178
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$return = delete $self->{NODE}{$key}; |
179
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0
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} |
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0
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180
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0
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0
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for (my $i = 0; $i < @{$self->{KEYS}}; $i++) { |
181
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if ($self->{KEYS}[$i] eq $key) { |
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182
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splice(@{$self->{KEYS}}, $i, 1); |
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} |
184
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0
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} |
185
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return $return; |
186
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} |
187
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188
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0
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0
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sub CLEAR { |
189
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0
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my ($self) = @_; |
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0
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190
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@{$self->{KEYS}} = (); |
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0
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191
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%{$self->{HASH}} = (); |
192
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} |
193
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194
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0
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0
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sub FIRSTKEY { |
195
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0
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my ($self) = @_; |
196
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0
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$self->{ITER} = 0; |
197
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$self->{KEYS}[0] |
198
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} |
199
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200
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0
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0
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sub NEXTKEY { |
201
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0
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my ($self) = @_; |
202
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$self->{KEYS}[++$self->{ITER}] |
203
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} |
204
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205
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0
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0
|
|
|
sub EXISTS { |
206
|
0
|
|
|
|
|
|
my ($self, $key) = @_; |
207
|
|
|
|
|
|
|
exists $self->{NODE}{$key} |
208
|
|
|
|
|
|
|
} |
209
|
|
|
|
|
|
|
|
210
|
|
|
|
|
|
|
1; |
211
|
|
|
|
|
|
|
|
212
|
|
|
|
|
|
|
__END__ |