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/* abstractset.vala
*
* Copyright (C) 2007 Jürg Billeter
* Copyright (C) 2009 Didier Villevalois
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Julien Peeters <contact@julienpeeters.fr>
*/
/**
* Skeletal implementation of the {@link Set} interface.
*
* Contains common code shared by all set implementations.
*
* @see HashSet
* @see TreeSet
*/
public abstract class Gee.AbstractSet<G> : Gee.AbstractCollection<G>, Set<G> {
private weak Set<G> _read_only_view;
/**
* {@inheritDoc}
*/
public virtual new Set<G> read_only_view {
owned get {
Set<G> instance = _read_only_view;
if (_read_only_view == null) {
instance = new ReadOnlySet<G> (this);
_read_only_view = instance;
instance.add_weak_pointer ((void**) (&_read_only_view));
}
return instance;
}
}
}
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