/*
* (C) Copyright 2016 Pantheon Technologies, s.r.o. and others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.opendaylight.yangtools.triemap;
import java.util.Iterator;
/**
* A mutable view of a TrieMap's key set.
*
* @author Robert Varga
*
* @param <K> the type of keys
*/
final class MutableKeySet<K> extends AbstractKeySet<K> {
MutableKeySet(final MutableTrieMap<K, ?> map) {
super(map);
}
@Override
public Iterator<K> iterator() {
final AbstractIterator<K, ?> itr = map().iterator();
return new Iterator<K>() {
@Override
public boolean hasNext() {
return itr.hasNext();
}
@Override
public K next() {
return itr.next().getKey();
}
@Override
public void remove() {
itr.remove();
}
};
}
@Override
public void clear() {
map().clear();
}
@Override
public boolean remove(final Object o) {
return map().remove(o) != null;
}
}