File Coverage

blib/lib/Tree/XPathEngine/Number.pm

Criterion	Covered	Total	%
statement	28	36	77.7
branch	5	10	50.0
condition			n/a
subroutine	11	14	78.5
pod	10	10	100.0
total	54	70	77.1

# $Id: /tree-xpathengine/trunk/lib/Tree/XPathEngine/Number.pm 17 2006-02-12T08:00:01.814064Z mrodrigu  $

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

use overload
        '""' => \&value,
        '0+' => \&value,
        '<=>' => \&xpath_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 xpath_cmp {
    my $self = shift;
    my ($other, $swap) = @_;
    if ($swap) {
        return $other <=> $$self;
    }
    return $$self <=> $other;
}

sub evaluate {
    my $self = shift;
    $self;
}

sub xpath_to_boolean {
    my $self = shift;
    return $$self ? Tree::XPathEngine::Boolean->_true : Tree::XPathEngine::Boolean->_false;
}

sub xpath_to_literal { Tree::XPathEngine::Literal->new($_[0]->as_string); }
sub xpath_to_number { $_[0]; }

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

1;
__END__