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/* bidiriterator.vala
*
* Copyright (C) 2009 Didier Villevalois, Maciej Piechotka
*
* 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:
* Maciej Piechotka <uzytkownik2@gmail.com>
*/
/**
* A bi-directional iterator.
*/
[GenericAccessors]
public interface Gee.BidirIterator<G> : Gee.Iterator<G> {
/**
* Rewinds to the previous element in the iteration.
*
* @return ``true`` if the iterator has a previous element
*/
public abstract bool previous ();
/**
* Checks whether there is a previous element in the iteration.
*
* @return ``true`` if the iterator has a previous element
*/
public abstract bool has_previous ();
/**
* Rewinds to the first element in the iteration.
*
* @return ``true`` if the iterator has a first element
*/
public abstract bool first ();
/**
* Advances to the last element in the iteration.
*
* @return ``true`` if the iterator has a last element
*/
public abstract bool last ();
}
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