PAJAS / XML-LibXML-1.59 / lib / XML / LibXML / Boolean.pm 

            

              
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# $Id: Boolean.pm,v 1.2 2003/02/04 23:01:33 phish Exp $
# Copyright 2001-2002, AxKit.com Ltd. All rights reserved.
package XML::LibXML::Boolean;
use XML::LibXML::Number;
use XML::LibXML::Literal;
use strict;
use overload
        '""' => \&value,
        '<=>' => \&cmp;
sub new {
    my $class = shift;
    my ($param) = @_;
    my $val = $param ? 1 : 0;
    bless \$val, $class;
}
sub True {
    my $class = shift;
    my $val = 1;
    bless \$val, $class;
}
sub False {
    my $class = shift;
    my $val = 0;
    bless \$val, $class;
}
sub value {
    my $self = shift;
    $$self;
}
sub cmp {
    my $self = shift;
    my ($other, $swap) = @_;
    if ($swap) {
        return $other <=> $$self;
    }
    return $$self <=> $other;
}
sub to_number { XML::LibXML::Number->new($_[0]->value); }
sub to_boolean { $_[0]; }
sub to_literal { XML::LibXML::Literal->new($_[0]->value ? "true" : "false"); }
sub string_value { return $_[0]->to_literal->value; }
1;
__END__
=head1 NAME
XML::LibXML::Boolean - Boolean true/false values
=head1 DESCRIPTION
XML::LibXML::Boolean objects implement simple boolean true/false objects.
=head1 API
=head2 XML::LibXML::Boolean->True
Creates a new Boolean object with a true value.
=head2 XML::LibXML::Boolean->False
Creates a new Boolean object with a false value.
=head2 value()
Returns true or false.
=head2 to_literal()
Returns the string "true" or "false".
=cut