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package PPIx::XPath; |
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976146
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use strict; |
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3
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129
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use warnings; |
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7
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3
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104
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1285
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use PPI; |
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248808
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3
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84
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use Carp; |
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300
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use Scalar::Util qw(reftype blessed); |
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3
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169
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7
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3
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3
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3866
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use Tree::XPathEngine; |
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140224
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3
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116
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use 5.006; |
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833
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our $VERSION='2.01'; |
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sub new { |
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1
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0
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my ($class,$source) = @_; |
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1
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50
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croak "PPIx::XPath->new needs a source document" unless defined($source); |
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1
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3
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my $doc; |
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1
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50
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33
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18
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if (blessed($source) && $source->isa('PPI::Node')) { |
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0
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33
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0
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$doc = $source; |
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} |
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elsif (reftype($source) eq 'SCALAR' |
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or (!ref($source) && -f $source)) { |
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1
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$doc = PPI::Document->new($source); |
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} |
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else { |
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0
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0
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0
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croak "PPIx::XPath expects either a PPI::Node or a file" . |
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" got a: [" .( ref($source) || $source ). ']'; |
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} |
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30
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1
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4856
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return bless {doc=>$doc},$class; |
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} |
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33
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# PPIx::XPath 1.0.0 allowed the use of partial package names as node names; |
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# this collides with the axis specification of proper XPath. |
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# Here we change the "old-style" node names into the new names |
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{ |
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my $legacy_names_rx;my %new_name_for; |
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sub clean_xpath_expr { |
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3
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3
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0
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9
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my (undef,$expr)=@_; |
40
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41
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3
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40
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$expr =~ s{$legacy_names_rx}{$new_name_for{$1}}ge; |
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5
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36
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42
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43
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3
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12
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return $expr; |
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} |
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46
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my @PPI_Packs; |
47
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# taken from Devel::Symdump |
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my @packages=('PPI'); |
49
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while (my $pack=shift(@packages)) { |
50
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3
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3
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22
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no strict 'refs'; |
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3
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4
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3
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1636
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51
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while (my ($key,$val)=each(%{*{"$pack\::"}})) { |
52
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local *ENTRY=$val; |
53
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if (defined $val && defined *ENTRY{HASH} && $key=~/::$/ |
54
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&& $key !~ /^::/ |
55
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&& $key ne 'main::' && $key ne '::') { |
56
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57
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my $p = "$pack\::$key";$p =~ s{::$}{}; #}{}; |
58
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push @packages,$p; |
59
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$p =~ s{^PPI::}{}; |
60
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61
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next unless $p=~/::/; |
62
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63
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my $newname=$p; |
64
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$newname =~ s{::}{-}g; |
65
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push @PPI_Packs,$p; |
66
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$new_name_for{$p}=$newname; |
67
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} |
68
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} |
69
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} |
70
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$legacy_names_rx='\b('.join('|', |
71
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sort {length($b) <=> length($a)} @PPI_Packs |
72
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).')\b'; |
73
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$legacy_names_rx=qr{$legacy_names_rx}; |
74
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} |
75
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76
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sub match { |
77
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3
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3
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0
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2086
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my ($self,$expr) = @_; |
78
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79
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3
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15
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$expr=$self->clean_xpath_expr($expr); |
80
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81
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3
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25
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Tree::XPathEngine->new()->findnodes($expr,$self->{doc}); |
82
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} |
83
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84
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package PPI::Element; |
85
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3
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3
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19
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use strict; |
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3
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5
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3
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317
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86
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3
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3
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38
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use warnings; |
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3
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4
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3
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5662
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87
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88
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67
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67
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0
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477
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sub xpath_get_name { my $pack_name=substr($_[0]->class,5); |
89
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67
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390
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$pack_name =~ s/::/-/g; |
90
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67
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195
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$pack_name } |
91
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0
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0
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0
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0
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sub xpath_get_next_sibling { $_[0]->snext_sibling } |
92
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0
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0
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0
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0
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sub xpath_get_previous_sibling { $_[0]->sprevious_sibling } |
93
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0
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0
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0
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0
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sub xpath_get_root_node { $_[0]->top } |
94
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0
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0
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0
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0
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sub xpath_get_parent_node { $_[0]->parent } |
95
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67
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67
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0
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1429
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sub xpath_is_element_node { 1 } |
96
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0
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0
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0
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0
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sub xpath_is_attribute_node { 0 } |
97
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0
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0
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0
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0
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sub xpath_is_document_node { 0 } |
98
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sub xpath_get_attributes { |
99
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return |
100
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4
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4
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0
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16
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PPIx::XPath::Attr->new($_[0],'significant'), |
101
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PPIx::XPath::Attr->new($_[0],'content'), |
102
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} |
103
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0
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0
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0
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0
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sub xpath_to_literal { "$_[0]" } |
104
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0
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0
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0
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0
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sub xpath_get_value { "$_[0]" } |
105
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1
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1
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0
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97
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sub xpath_string_value { "$_[0]" } |
106
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107
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sub xpath_cmp { |
108
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63
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63
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0
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973
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my( $a, $b)= @_; |
109
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63
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50
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459
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if ( UNIVERSAL::isa( $b, 'PPIx::XPath::Attr')) { |
|
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50
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110
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# elt <=> att, compare the elt to the att->{elt} |
111
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# if the elt is the att->{elt} (cmp return 0) then -1, elt is before att |
112
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0
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0
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0
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return ($a->_xpath_elt_cmp( $b->{parent}) ) || -1 ; |
113
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} |
114
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elsif ( UNIVERSAL::isa( $b, 'PPI::Document')) { |
115
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# elt <=> document, elt is after document |
116
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0
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0
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return 1; |
117
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} else { |
118
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# 2 elts, compare them |
119
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63
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152
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return $a->_xpath_elt_cmp( $b); |
120
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} |
121
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} |
122
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123
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sub _xpath_elt_cmp { |
124
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63
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63
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78
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my ($a,$b)=@_; |
125
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126
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# easy cases |
127
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63
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50
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129
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return 0 if( $a == $b); |
128
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63
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100
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387
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return 1 if( $a->_xpath_in($b)); # a starts after b |
129
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48
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100
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533
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return -1 if( $b->_xpath_in($a)); # a starts before b |
130
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131
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# ancestors does not include the element itself |
132
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42
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469
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my @a_pile= ($a, $a->_xpath_ancestors); |
133
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42
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99
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my @b_pile= ($b, $b->_xpath_ancestors); |
134
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135
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# the 2 elements are not in the same twig |
136
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42
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50
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96
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return undef unless( $a_pile[-1] == $b_pile[-1]); |
137
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138
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# find the first non common ancestors (they are siblings) |
139
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42
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221
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my $a_anc= pop @a_pile; |
140
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42
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49
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my $b_anc= pop @b_pile; |
141
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142
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42
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87
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while( $a_anc == $b_anc) { |
143
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83
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402
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$a_anc= pop @a_pile; |
144
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83
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176
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$b_anc= pop @b_pile; |
145
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} |
146
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147
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# from there move left and right and figure out the order |
148
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42
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217
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my( $a_prev, $a_next, $b_prev, $b_next)= ($a_anc, $a_anc, $b_anc, $b_anc); |
149
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42
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82
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while () { |
150
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42
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100
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127
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$a_prev= $a_prev->sprevious_sibling || return( -1); |
151
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19
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100
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436
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return 1 if( $a_prev == $b_next); |
152
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3
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50
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|
33
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$a_next= $a_next->snext_sibling || return( 1); |
153
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3
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50
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65
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return -1 if( $a_next == $b_prev); |
154
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0
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0
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0
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$b_prev= $b_prev->sprevious_sibling || return( 1); |
155
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0
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0
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0
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return -1 if( $b_prev == $a_next); |
156
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0
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0
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0
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$b_next= $b_next->snext_sibling || return( -1); |
157
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0
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0
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|
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0
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return 1 if( $b_next == $a_prev); |
158
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} |
159
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} |
160
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161
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sub _xpath_in { |
162
|
111
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111
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141
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my ($self, $ancestor)= @_; |
163
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111
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287
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while ( $self= $self->parent) { |
164
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250
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100
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2133
|
return $self if ( $self == $ancestor); |
165
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} |
166
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} |
167
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168
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sub _xpath_ancestors { |
169
|
84
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84
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|
99
|
my( $self)= @_; |
170
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84
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|
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94
|
my @ancestors; |
171
|
84
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|
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|
|
210
|
while ( $self= $self->parent) { |
172
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213
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|
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|
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1338
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push @ancestors, $self; |
173
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|
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|
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} |
174
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84
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|
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|
|
440
|
return @ancestors; |
175
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|
|
} |
176
|
|
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|
177
|
|
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|
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|
|
package PPI::Token; |
178
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3
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|
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3
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|
21
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use strict; |
|
3
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|
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4
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3
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211
|
|
179
|
3
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|
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3
|
|
21
|
use warnings; |
|
3
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|
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5
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3
|
|
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235
|
|
180
|
|
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|
181
|
28
|
|
|
28
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0
|
895
|
sub xpath_get_child_nodes { return } |
182
|
|
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|
|
|
|
183
|
|
|
|
|
|
|
package PPI::Token::Quote::Double; |
184
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3
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|
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3
|
|
14
|
use strict; |
|
3
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|
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|
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17
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3
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181
|
|
185
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3
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3
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15
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use warnings; |
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3
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5
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3
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273
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186
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187
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sub xpath_get_attributes { |
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0
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0
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0
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return $_[0]->SUPER::xpath_get_attributes, |
189
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PPIx::XPath::Attr->new($_[0],'interpolations'), |
190
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} |
191
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192
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package PPI::Token::Number; |
193
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3
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3
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16
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use strict; |
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3
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5
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3
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95
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194
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3
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3
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13
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use warnings; |
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3
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4
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3
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253
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195
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196
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sub xpath_get_attributes { |
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0
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0
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0
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return $_[0]->SUPER::xpath_get_attributes, |
198
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PPIx::XPath::Attr->new($_[0],'base'), |
199
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} |
200
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201
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package PPI::Token::Word; |
202
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3
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3
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14
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use strict; |
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3
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4
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3
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76
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203
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3
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3
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12
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use warnings; |
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3
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6
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3
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258
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204
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205
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sub xpath_get_attributes { |
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0
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0
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return $_[0]->SUPER::xpath_get_attributes, |
207
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PPIx::XPath::Attr->new($_[0],'method-call'), |
208
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} |
209
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210
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package PPI::Token::Comment; |
211
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3
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3
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15
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use strict; |
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3
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5
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3
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94
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212
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3
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3
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15
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use warnings; |
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3
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12
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3
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5576
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213
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214
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sub xpath_get_attributes { |
215
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0
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0
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0
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return $_[0]->SUPER::xpath_get_attributes, |
216
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PPIx::XPath::Attr->new($_[0],'line'), |
217
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} |
218
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219
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package PPI::Token::HereDoc; |
220
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3
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3
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24
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use strict; |
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3
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5
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3
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92
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221
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3
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3
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14
|
use warnings; |
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3
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7
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3
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3774
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222
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223
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# TODO: add access to the contents of the heredoc (->heredoc method) |
224
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225
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sub xpath_get_attributes { |
226
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0
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0
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0
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0
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return $_[0]->SUPER::xpath_get_attributes, |
227
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PPIx::XPath::Attr->new($_[0],'terminator'), |
228
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|
} |
229
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230
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package PPI::Token::Prototype; |
231
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3
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3
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22
|
use strict; |
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3
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5
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3
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94
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232
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3
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3
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14
|
use warnings; |
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3
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27
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3
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759
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233
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234
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0
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0
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0
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0
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sub xpath_to_literal { $_[0]->prototype } |
235
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0
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0
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0
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0
|
sub xpath_get_value { $_[0]->prototype } |
236
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0
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0
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0
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0
|
sub xpath_string_value { $_[0]->prototype } |
237
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238
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|
package PPI::Node; |
239
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3
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3
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18
|
use strict; |
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3
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5
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3
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200
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240
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3
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3
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15
|
use warnings; |
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3
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5
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3
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460
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241
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242
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42
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42
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0
|
3170
|
sub xpath_get_child_nodes { $_[0]->schildren } |
243
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|
|
sub xpath_get_attributes { |
244
|
4
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4
|
0
|
19
|
return $_[0]->SUPER::xpath_get_attributes, |
245
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|
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|
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|
|
PPIx::XPath::Attr->new($_[0],'scope'), |
246
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|
|
} |
247
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248
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|
package PPI::Token::Attribute; |
249
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3
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3
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|
26
|
use strict; |
|
3
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5
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3
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|
107
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|
250
|
3
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3
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|
14
|
use warnings; |
|
3
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10
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3
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320
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251
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252
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|
|
sub xpath_get_attributes { |
253
|
0
|
|
|
0
|
0
|
0
|
return $_[0]->SUPER::xpath_get_attributes, |
254
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|
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|
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|
|
PPIx::XPath::Attr->new($_[0],'identifier'), |
255
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|
|
PPIx::XPath::Attr->new($_[0],'parameters'), |
256
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|
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|
|
|
|
} |
257
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258
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|
|
|
|
|
|
package PPI::Token::Symbol; |
259
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3
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|
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3
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|
16
|
use strict; |
|
3
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|
4
|
|
|
3
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|
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|
94
|
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260
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3
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3
|
|
21
|
use warnings; |
|
3
|
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4
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3
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|
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|
467
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|
261
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262
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|
|
sub xpath_get_attributes { |
263
|
0
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|
|
0
|
0
|
0
|
return $_[0]->SUPER::xpath_get_attributes, |
264
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|
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|
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|
|
PPIx::XPath::Attr->new($_[0],'symbol'), |
265
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|
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|
|
PPIx::XPath::Attr->new($_[0],'canonical'), |
266
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|
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|
|
|
|
PPIx::XPath::Attr->new($_[0],'raw_type'), |
267
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|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'symbol_typel'), |
268
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|
|
|
|
|
|
} |
269
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|
|
|
|
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|
270
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|
|
|
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|
|
package PPI::Statement; |
271
|
3
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|
|
3
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|
17
|
use strict; |
|
3
|
|
|
|
|
45
|
|
|
3
|
|
|
|
|
135
|
|
272
|
3
|
|
|
3
|
|
22
|
use warnings; |
|
3
|
|
|
|
|
7
|
|
|
3
|
|
|
|
|
527
|
|
273
|
|
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|
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|
274
|
|
|
|
|
|
|
sub xpath_get_attributes { |
275
|
4
|
|
|
4
|
0
|
15
|
return $_[0]->SUPER::xpath_get_attributes, |
276
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'label'), |
277
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|
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|
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|
|
PPIx::XPath::Attr->new($_[0],'stable'), |
278
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|
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|
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|
|
PPIx::XPath::Attr->new($_[0],'type'), |
279
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|
|
|
|
|
|
} |
280
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|
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|
281
|
|
|
|
|
|
|
package PPI::Statement::Sub; |
282
|
3
|
|
|
3
|
|
16
|
use strict; |
|
3
|
|
|
|
|
4
|
|
|
3
|
|
|
|
|
94
|
|
283
|
3
|
|
|
3
|
|
14
|
use warnings; |
|
3
|
|
|
|
|
4
|
|
|
3
|
|
|
|
|
407
|
|
284
|
|
|
|
|
|
|
|
285
|
|
|
|
|
|
|
sub xpath_get_attributes { |
286
|
4
|
|
|
4
|
0
|
508
|
return $_[0]->SUPER::xpath_get_attributes, |
287
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'name'), |
288
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'prototype'), |
289
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'forward'), |
290
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'reserved'), |
291
|
|
|
|
|
|
|
} |
292
|
|
|
|
|
|
|
|
293
|
|
|
|
|
|
|
package PPI::Statement::Package; |
294
|
3
|
|
|
3
|
|
15
|
use strict; |
|
3
|
|
|
|
|
5
|
|
|
3
|
|
|
|
|
107
|
|
295
|
3
|
|
|
3
|
|
19
|
use warnings; |
|
3
|
|
|
|
|
5
|
|
|
3
|
|
|
|
|
264
|
|
296
|
|
|
|
|
|
|
|
297
|
|
|
|
|
|
|
sub xpath_get_attributes { |
298
|
0
|
|
|
0
|
0
|
0
|
return $_[0]->SUPER::xpath_get_attributes, |
299
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'namespace'), |
300
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'file-scoped'), |
301
|
|
|
|
|
|
|
} |
302
|
|
|
|
|
|
|
|
303
|
|
|
|
|
|
|
package PPI::Statement::Include; |
304
|
3
|
|
|
3
|
|
16
|
use strict; |
|
3
|
|
|
|
|
3
|
|
|
3
|
|
|
|
|
103
|
|
305
|
3
|
|
|
3
|
|
13
|
use warnings; |
|
3
|
|
|
|
|
4
|
|
|
3
|
|
|
|
|
541
|
|
306
|
|
|
|
|
|
|
|
307
|
|
|
|
|
|
|
sub xpath_get_attributes { |
308
|
0
|
|
|
0
|
0
|
0
|
return $_[0]->SUPER::xpath_get_attributes, |
309
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'module'), |
310
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'module-version'), |
311
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'version'), |
312
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'version-literal'), |
313
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'pragma'), |
314
|
|
|
|
|
|
|
} |
315
|
|
|
|
|
|
|
|
316
|
|
|
|
|
|
|
package PPI::Structure; |
317
|
3
|
|
|
3
|
|
16
|
use strict; |
|
3
|
|
|
|
|
5
|
|
|
3
|
|
|
|
|
100
|
|
318
|
3
|
|
|
3
|
|
14
|
use warnings; |
|
3
|
|
|
|
|
4
|
|
|
3
|
|
|
|
|
319
|
|
319
|
|
|
|
|
|
|
|
320
|
|
|
|
|
|
|
sub xpath_get_attributes { |
321
|
0
|
|
|
0
|
0
|
0
|
return $_[0]->SUPER::xpath_get_attributes, |
322
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'start'), |
323
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'finish'), |
324
|
|
|
|
|
|
|
PPIx::XPath::Attr->new($_[0],'braces'), |
325
|
|
|
|
|
|
|
} |
326
|
|
|
|
|
|
|
|
327
|
|
|
|
|
|
|
package PPI::Document; |
328
|
3
|
|
|
3
|
|
15
|
use strict; |
|
3
|
|
|
|
|
4
|
|
|
3
|
|
|
|
|
91
|
|
329
|
3
|
|
|
3
|
|
25
|
use warnings; |
|
3
|
|
|
|
|
5
|
|
|
3
|
|
|
|
|
323
|
|
330
|
|
|
|
|
|
|
|
331
|
7
|
|
|
7
|
0
|
29051
|
sub xpath_get_root_node { $_[0] } |
332
|
0
|
|
|
0
|
0
|
0
|
sub xpath_get_parent_node { return } |
333
|
0
|
|
|
0
|
0
|
0
|
sub xpath_is_attribute_node { 0 } |
334
|
0
|
|
|
0
|
0
|
0
|
sub xpath_is_document_node { 1 } |
335
|
|
|
|
|
|
|
|
336
|
|
|
|
|
|
|
package PPIx::XPath::Attr; |
337
|
3
|
|
|
3
|
|
14
|
use strict; |
|
3
|
|
|
|
|
5
|
|
|
3
|
|
|
|
|
70
|
|
338
|
3
|
|
|
3
|
|
15
|
use warnings; |
|
3
|
|
|
|
|
5
|
|
|
3
|
|
|
|
|
1804
|
|
339
|
|
|
|
|
|
|
|
340
|
|
|
|
|
|
|
sub new { |
341
|
40
|
|
|
40
|
|
94
|
my ($class,$parent,$name)=@_; |
342
|
|
|
|
|
|
|
|
343
|
40
|
|
|
|
|
108
|
my $meth=$parent->can($name); |
344
|
40
|
100
|
|
|
|
84
|
return unless $meth; |
345
|
|
|
|
|
|
|
|
346
|
36
|
|
|
|
|
33
|
my $value; |
347
|
36
|
100
|
|
|
|
36
|
eval {$value=$meth->($parent);1} or return; |
|
36
|
|
|
|
|
78
|
|
|
32
|
|
|
|
|
854
|
|
348
|
|
|
|
|
|
|
|
349
|
32
|
50
|
|
|
|
58
|
return unless defined $value; |
350
|
|
|
|
|
|
|
|
351
|
32
|
|
|
|
|
180
|
return bless {parent=>$parent,name=>$name,value=>$value},$class; |
352
|
|
|
|
|
|
|
} |
353
|
|
|
|
|
|
|
|
354
|
32
|
|
|
32
|
|
338
|
sub xpath_get_name { $_[0]->{name} } |
355
|
0
|
|
|
0
|
|
0
|
sub xpath_get_root_node { $_[0]->{parent}->top } |
356
|
0
|
|
|
0
|
|
0
|
sub xpath_get_parent_node { $_[0]->{parent} } |
357
|
0
|
|
|
0
|
|
0
|
sub xpath_is_element_node { 0 } |
358
|
0
|
|
|
0
|
|
0
|
sub xpath_is_attribute_node { 1 } |
359
|
0
|
|
|
0
|
|
0
|
sub xpath_is_document_node { 0 } |
360
|
0
|
|
|
0
|
|
0
|
sub xpath_to_literal { $_[0]->{value} } |
361
|
0
|
|
|
0
|
|
0
|
sub xpath_get_value { $_[0]->{value} } |
362
|
4
|
|
|
4
|
|
461
|
sub xpath_string_value { $_[0]->{value} } |
363
|
0
|
|
|
0
|
|
|
sub xpath_to_number { Tree::XPathEngine::Number->new($_[0]->{value}) } |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
sub xpath_cmp($$) { |
366
|
0
|
|
|
0
|
|
|
my( $a, $b)= @_; |
367
|
0
|
0
|
|
|
|
|
if ( UNIVERSAL::isa( $b, 'PPIx::XPath::Attr')) { |
|
|
0
|
|
|
|
|
|
368
|
|
|
|
|
|
|
# 2 attributes, compare their elements, then their name |
369
|
0
|
|
0
|
|
|
|
return ($a->{parent}->_xpath_elt_cmp( $b->{parent}) ) |
370
|
|
|
|
|
|
|
|| ($a->{name} cmp $b->{name}); |
371
|
|
|
|
|
|
|
} |
372
|
|
|
|
|
|
|
elsif ( UNIVERSAL::isa( $b, 'PPI::Document')) { |
373
|
|
|
|
|
|
|
# att <=> document, att is after document |
374
|
0
|
|
|
|
|
|
return 1; |
375
|
|
|
|
|
|
|
} |
376
|
|
|
|
|
|
|
else { |
377
|
|
|
|
|
|
|
# att <=> elt : compare the att->elt and the elt |
378
|
|
|
|
|
|
|
# if att->elt is the elt (cmp returns 0) then 1 (elt is before att) |
379
|
0
|
|
0
|
|
|
|
return ($a->{parent}->_xpath_elt_cmp( $b) ) || 1 ; |
380
|
|
|
|
|
|
|
} |
381
|
|
|
|
|
|
|
} |
382
|
|
|
|
|
|
|
|
383
|
|
|
|
|
|
|
1; |
384
|
|
|
|
|
|
|
__END__ |