#
# Copyright (C) 1997 Ken MacLeod
# See the file COPYING for distribution terms.
#
# $Id: XRef.pm,v 1.2 1998/01/18 00:43:15 ken Exp $
#
package Quilt::XRef;
use strict;
use vars qw{$singleton};
my $singleton = undef;
sub new {
my ($type) = @_;
return ($singleton)
if (defined $singleton);
my ($self) = {};
bless ($self, $type);
$singleton = $self;
return $self;
}
sub visit_scalar {
}
sub visit_SGML_SData {
}
sub AUTOLOAD {
my $self = shift;
my $element = shift;
return if !defined $element;
my $context = shift;
my $id;
eval { $id = $element->id };
if (defined $id) {
$context->{'references'}{$id} = $element;
}
# XXX test specifically for undefined method
eval {$element->children_accept_ports ($self, $context, @_)};
}
1;