/*
* Primitive Collections for Java.
* Copyright (C) 2003 Søren Bak
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.uwyn.jhighlight.pcj.map;
/**
* This interface represents iterators over maps from
* char values to objects.
*
* @see com.uwyn.rife.pcj.map.CharKeyMap
* @see com.uwyn.rife.pcj.CharIterator
*
* @author Søren Bak
* @version 1.0 2003/6/1
* @since 1.0
*/
public interface CharKeyMapIterator
{
/**
* Indicates whether more entries can be returned by this
* iterator.
*
* @return <tt>true</tt> if more char entries can be returned
* by this iterator; returns <tt>false</tt>
* otherwise.
*
* @see #next()
*/
boolean hasNext();
/**
* Advances to the next entry of this iterator.
*
* @throws java.util.NoSuchElementException
* if no more entries are available from this
* iterator.
*
* @see #hasNext()
*/
void next();
/**
* Removes the last entry value returned from the underlying
* map.
*
* @throws UnsupportedOperationException
* if removal is not supported by this iterator.
*
* @throws IllegalStateException
* if no entry has been returned by this iterator
* yet.
*/
void remove();
/**
* Returns the key of the current entry of this iterator.
*
* @return the key of the current entry of this iterator.
*
* @throws IllegalStateException
* if there is no current entry (i.e. if
* {@link #next() next()}
* has not been called or
* {@link #remove() remove()}
* has just been called.
*
* @see #getValue()
*/
char getKey();
/**
* Returns the value of the current entry of this iterator.
*
* @return the value of the current entry of this iterator
* (which may be null).
*
* @throws IllegalStateException
* if there is no current entry (i.e. if
* {@link #next() next()}
* has not been called or
* {@link #remove() remove()}
* has just been called.
*
* @see #getKey()
*/
Object getValue();
}