/usr/share/perl5/XML/XPath/Number.pm is in libxml-xpath-perl 1.13-7.
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 | # $Id: Number.pm,v 1.14 2002/12/26 17:57:09 matt Exp $
package XML::XPath::Number;
use XML::XPath::Boolean;
use XML::XPath::Literal;
use strict;
use overload
'""' => \&value,
'0+' => \&value,
'<=>' => \&cmp;
sub new {
my $class = shift;
my $number = shift;
if ($number !~ /^\s*[+-]?(\d+(\.\d*)?|\.\d+)\s*$/) {
$number = undef;
}
else {
$number =~ s/^\s*(.*)\s*$/$1/;
}
bless \$number, $class;
}
sub as_string {
my $self = shift;
defined $$self ? $$self : 'NaN';
}
sub as_xml {
my $self = shift;
return "<Number>" . (defined($$self) ? $$self : 'NaN') . "</Number>\n";
}
sub value {
my $self = shift;
$$self;
}
sub cmp {
my $self = shift;
my ($other, $swap) = @_;
if ($swap) {
return $other <=> $$self;
}
return $$self <=> $other;
}
sub evaluate {
my $self = shift;
$self;
}
sub to_boolean {
my $self = shift;
return $$self ? XML::XPath::Boolean->True : XML::XPath::Boolean->False;
}
sub to_literal { XML::XPath::Literal->new($_[0]->as_string); }
sub to_number { $_[0]; }
sub string_value { return $_[0]->value }
1;
__END__
=head1 NAME
XML::XPath::Number - Simple numeric values.
=head1 DESCRIPTION
This class holds simple numeric values. It doesn't support -0, +/- Infinity,
or NaN, as the XPath spec says it should, but I'm not hurting anyone I don't think.
=head1 API
=head2 new($num)
Creates a new XML::XPath::Number object, with the value in $num. Does some
rudimentary numeric checking on $num to ensure it actually is a number.
=head2 value()
Also as overloaded stringification. Returns the numeric value held.
=cut
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