Commit | Line | Data |
e1b4b35c |
1 | package HTML::String::Value; |
2 | |
3 | use strictures 1; |
4 | use Safe::Isa; |
5 | use Data::Munge; |
6 | |
7 | sub op_factory { |
8 | my ($op) = @_; |
9 | |
10 | return eval q|sub { |
11 | my ($self, $str) = @_; |
12 | |
13 | if ( $str->$_isa(__PACKAGE__) ) { |
14 | return $self->unescaped_string | . $op . q| $str->unescaped_string; |
15 | } |
16 | else { |
17 | return $self->unescaped_string | . $op . q| $str; |
18 | } |
19 | }|; |
20 | } |
21 | |
22 | use overload |
23 | '""' => 'escaped_string', |
24 | '.' => 'dot', |
25 | '.=' => 'dot_equals', |
ed99cbb4 |
26 | '=' => 'clone', |
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27 | |
28 | 'cmp' => op_factory('cmp'), |
29 | 'eq' => op_factory('eq'), |
30 | '<=>' => op_factory('<=>'), |
31 | '==' => op_factory('=='), |
32 | '%' => op_factory('%'), |
33 | '+' => op_factory('+'), |
34 | '-' => op_factory('-'), |
35 | '*' => op_factory('*'), |
36 | '/' => op_factory('/'), |
37 | '**' => op_factory('**'), |
38 | '>>' => op_factory('>>'), |
39 | '<<' => op_factory('<<'), |
40 | |
41 | fallback => 1, |
42 | ; |
43 | |
44 | sub new { |
45 | my ($class, @raw_parts) = @_; |
46 | |
47 | my @parts = map { ref($_) eq 'ARRAY' ? $_ : [$_] } @raw_parts; |
48 | |
49 | my $self = bless { parts => \@parts }, $class; |
50 | |
51 | return $self; |
52 | } |
53 | |
54 | sub escaped_string { |
55 | my $self = shift; |
56 | |
57 | return join '', map +( |
58 | $_->[1] |
59 | ? byval { |
60 | s/&/&/g; |
61 | s/</</g; |
62 | s/>/>/g; |
63 | s/"/"/g; |
64 | } $_->[0] |
65 | : $_->[0] |
66 | ), @{$self->{parts}}; |
67 | } |
68 | |
69 | sub unescaped_string { |
70 | my $self = shift; |
71 | |
72 | return join '', map $_->[0], @{$self->{parts}}; |
73 | } |
74 | |
75 | sub dot { |
76 | my ($self, $str, $prefix) = @_; |
77 | |
78 | return $self unless $str; |
79 | |
80 | my @parts = @{$self->{parts}}; |
81 | |
82 | my @new_parts = ( |
83 | $str->$_isa(__PACKAGE__) |
84 | ? @{$str->{parts}} |
85 | : [ $str, 1 ] |
86 | ); |
87 | |
88 | if ( $prefix ) { |
89 | unshift @parts, @new_parts; |
90 | } else { |
91 | push @parts, @new_parts; |
92 | } |
93 | |
94 | return ref($self)->new(@parts); |
95 | } |
96 | |
97 | sub dot_equals { |
98 | my ($self, $str, $prefix) = @_; |
99 | |
100 | return $self unless $str; |
101 | |
102 | my @new_parts = ( |
103 | $str->$_isa(__PACKAGE__) |
104 | ? @{$str->{parts}} |
105 | : [ $str, 1 ] |
106 | ); |
107 | |
108 | push @{$self->{parts}}, @new_parts; |
109 | |
110 | return $self; |
111 | } |
112 | |
ed99cbb4 |
113 | sub clone { |
114 | my $self = shift; |
115 | |
116 | return ref($self)->new(@{$self->{parts}}); |
117 | } |
118 | |
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119 | 1; |