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stmt |
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cond |
sub |
pod |
time |
code |
1
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2
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2
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2
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10
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use strict; |
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2
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2
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2
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68
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3
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2
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2
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9
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use warnings; |
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2
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4
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2
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44
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4
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5
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2
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2
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1607
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use Clone; |
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2
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8248
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2
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263
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6
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7
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package Regexp::Whitespace::Parser; |
8
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9
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our $VERSION = '0.001_0'; |
10
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11
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2
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2
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5812
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use YAPE::Regex qw( Regexp::Whitespace::Parser ); |
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2
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129102
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2
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30
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12
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13
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package Regexp::Whitespace::Parser::Element; |
14
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15
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our @ISA; |
16
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17
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BEGIN { |
18
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2
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2
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3549
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push @ISA, qw( Clone ); |
19
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} |
20
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21
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sub convert { |
22
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# clone by default |
23
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0
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0
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0
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return shift->clone; |
24
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} |
25
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26
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package Regexp::Whitespace::Parser::container; |
27
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28
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sub convert { |
29
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17
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17
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32
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my $self = shift; |
30
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17
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226
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my $clone = $self->clone(1); # shallow copy |
31
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17
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37
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my @content = map { $_->convert } @{$self->{CONTENT}}; |
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17
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94
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17
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158
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32
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17
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167
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$clone->{CONTENT} = \@content; |
33
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17
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189
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return $clone; |
34
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} |
35
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36
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# register this package into @ISA of container types |
37
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{ |
38
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my @container_types = qw( cut lookahead lookbehind group capture ); |
39
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2
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2
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27
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no strict 'refs'; |
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2
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5
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2
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1022
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40
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for my $type (@container_types) { |
41
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unshift @{ 'Regexp::Whitespace::Parser::' . $type . '::ISA' }, __PACKAGE__; |
42
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} |
43
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} |
44
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45
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package Regexp::Whitespace::Parser::exact; |
46
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47
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sub convert { |
48
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16
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16
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26
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my $self = shift; |
49
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16
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140
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my $exact = $self->exact_text; |
50
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51
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# are there ocurrences of \s ? |
52
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16
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50
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74
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if ( $exact =~ /\s/ ) { |
53
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16
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24
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my @pieces; |
54
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55
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16
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100
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40
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if ( length $exact > 1 ) { |
56
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# note: only 'text' types need this loop, |
57
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# being the only one whose exact text may have |
58
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# a length greater than 1 |
59
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60
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# assertions |
61
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4
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50
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29
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die "panic: quantity modifier should not present for multi-character text" if $self->quant; |
62
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4
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50
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41
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die "panic: non-greedy modifier should not present for multi-character text" if $self->ngreed; |
63
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64
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LOOP : { |
65
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4
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100
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52
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if ( $exact =~ / \G \z /xgc ) { |
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22
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68
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66
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4
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9
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last LOOP; |
67
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} |
68
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18
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100
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54
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if ( $exact =~ / \G \s+ /xgc ) { |
69
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# replace matches of /\s+/ with a macro '\s+' |
70
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7
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40
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push @pieces, Regexp::Whitespace::Parser::macro->new( 's', '+', '' ); |
71
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7
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60
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redo LOOP; |
72
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} |
73
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11
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50
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43
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if ( $exact =~ / \G (\S+) /xgc ) { |
74
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11
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39
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push @pieces, Regexp::Whitespace::Parser::text->new( $1, '', '' ); |
75
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11
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112
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redo LOOP; |
76
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} |
77
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} |
78
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} else { |
79
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# FIXME: these conversion rules needs checking |
80
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# s is any char that matches /\s/ |
81
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# s becomes \s+ |
82
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# s? becomes \s* |
83
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# s* becomes \s* |
84
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# s{0} becomes \s* |
85
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# s{0,N} becomes \s* |
86
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# s{M,N} becomes \s+ |
87
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# s+ becomes \s+ |
88
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# |
89
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# the non-greedy flag is kept (don't know if that's correct) |
90
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12
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351
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my ($q, $ng) = ($self->quant, $self->ngreed); |
91
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12
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50
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140
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my $nq = ( $q =~ /\A ( [?*] | [{]0 ) /x ) ? '*' : '+'; |
92
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12
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45
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return Regexp::Whitespace::Parser::macro->new( 's', $nq, $ng ); |
93
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94
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# TODO: some tests would be nice |
95
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} |
96
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97
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4
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28
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return @pieces; |
98
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99
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} else { |
100
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# no needed conversion |
101
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0
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0
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return $self->clone; |
102
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} |
103
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} |
104
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105
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# register this package into @ISA of exact types |
106
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{ |
107
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my @exact_types = qw( text oct hex slash ctrl named ); # ?! utf8hex |
108
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2
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2
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15
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no strict 'refs'; |
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2
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4
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2
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879
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109
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for my $type (@exact_types) { |
110
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unshift @{ 'Regexp::Whitespace::Parser::' . $type . '::ISA' }, __PACKAGE__; |
111
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} |
112
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} |
113
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114
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package Regexp::Whitespace::Parser::text; |
115
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116
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sub exact_text { |
117
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8
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8
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27
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return shift->{TEXT}; |
118
|
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} |
119
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120
|
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package Regexp::Whitespace::Parser::oct; |
121
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122
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sub exact_text { |
123
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1
|
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1
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5
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return chr oct(shift->{TEXT}); |
124
|
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} |
125
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126
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package Regexp::Whitespace::Parser::hex; |
127
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128
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sub exact_text { |
129
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2
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2
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11
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return chr hex(shift->{TEXT}); |
130
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} |
131
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132
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#package ...::utf8hext; # FIXME wait for new release of YAPE::Regex |
133
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134
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package Regexp::Whitespace::Parser::slash; |
135
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136
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my %known_sequences = ( |
137
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't' => "\t", |
138
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'n' => "\n", |
139
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'r' => "\r", |
140
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'a' => "\a", |
141
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'f' => "\f", |
142
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'b' => "\b", |
143
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'e' => "\e", |
144
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); |
145
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146
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sub exact_text { |
147
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1
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1
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3
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my $t = shift->{TEXT}; |
148
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1
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33
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12
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return $known_sequences{$t} || $t; |
149
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} |
150
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151
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package Regexp::Whitespace::Parser::ctrl; |
152
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153
|
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sub exact_text { |
154
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4
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4
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9
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my $t = shift->{TEXT}; |
155
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4
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19
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return chr( ord(uc $t) ^ 0x40 ); |
156
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} |
157
|
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158
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package Regexp::Whitespace::Parser::named; |
159
|
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160
|
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sub exact_text { |
161
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0
|
|
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0
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|
|
require charnames; |
162
|
0
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return charnames::vianame(shift->{TEXT}); |
163
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} |
164
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165
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166
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1; |
167
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