/usr/share/perl5/Tree/XPathEngine/Literal.pm is in libtree-xpathengine-perl 0.05-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | # $Id: /tree-xpathengine/trunk/lib/Tree/XPathEngine/Literal.pm 17 2006-02-12T08:00:01.814064Z mrodrigu $
package Tree::XPathEngine::Literal;
use Tree::XPathEngine::Boolean;
use Tree::XPathEngine::Number;
use strict;
use overload
'""' => \&value,
'cmp' => \&xpath_cmp;
sub new {
my $class = shift;
my ($string) = @_;
# $string =~ s/"/"/g;
# $string =~ s/'/'/g;
bless \$string, $class;
}
sub as_string {
my $self = shift;
my $string = $$self;
$string =~ s/'/'/g;
return "'$string'";
}
sub as_xml {
my $self = shift;
my $string = $$self;
return "<Literal>$string</Literal>\n";
}
sub value {
my $self = shift;
$$self;
}
sub xpath_cmp {
my $self = shift;
my ($cmp, $swap) = @_;
if ($swap) {
return $cmp cmp $$self;
}
return $$self cmp $cmp;
}
sub evaluate {
my $self = shift;
$self;
}
sub xpath_to_boolean {
my $self = shift;
return (length($$self) > 0) ? Tree::XPathEngine::Boolean->_true : Tree::XPathEngine::Boolean->_false;
}
sub xpath_to_number { return Tree::XPathEngine::Number->new($_[0]->value); }
sub xpath_to_literal { return $_[0]; }
sub xpath_string_value { return $_[0]->value; }
1;
__END__
=head1 NAME
Tree::XPathEngine::Literal - Simple string values.
=head1 DESCRIPTION
In XPath terms a Literal is what we know as a string.
=head1 API
=head2 new($string)
Create a new Literal object with the value in $string. Note that " and
' will be converted to " and ' respectively. That is not part of the XPath
specification, but I consider it useful. Note though that you have to go
to extraordinary lengths in an XML template file (be it XSLT or whatever) to
make use of this:
<xsl:value-of select=""I'm feeling &quot;sad&quot;""/>
Which produces a Literal of:
I'm feeling "sad"
=head2 value()
Also overloaded as stringification, simply returns the literal string value.
=head2 xpath_cmp($literal)
Returns the equivalent of perl's cmp operator against the given $literal.
=head2 Other Methods
Those are needed so the objects can be properly processed in various contexts
=over 4
=item as_string
=item as_xml
=item value
=item evaluate
=item xpath_to_boolean
=item xpath_to_literal
=item xpath_to_number
=item xpath_string_value
=back
=cut
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