File Coverage

blib/lib/XML/XPathEngine/Number.pm

Criterion	Covered	Total	%
statement	22	38	57.8
branch	1	14	7.1
condition			n/a
subroutine	8	16	50.0
pod	2	12	16.6
total	33	80	41.2

# $Id: Number.pm,v 1.14 2002/12/26 17:57:09 matt Exp $

package XML::XPathEngine::Number;
use XML::XPathEngine::Boolean;
use XML::XPathEngine::Literal;
use strict;

use overload
        '""' => \&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 "" . (defined($$self) ? $$self : 'NaN') . "\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::XPathEngine::Boolean->True : XML::XPathEngine::Boolean->False;
}

sub to_literal { XML::XPathEngine::Literal->new($_[0]->as_string); }
sub to_number { $_[0]; }

sub string_value { return $_[0]->value }

sub getChildNodes { return wantarray ? () : []; }
sub getAttributes { return wantarray ? () : []; }

1;
__END__