javascalautils.EmptyContainer Maven / Gradle / Ivy
/**
* Copyright 2015 Peter Nerg
*
* 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 javascalautils;
import java.util.Collections;
import java.util.Iterator;
import java.util.stream.Stream;
/**
* Represents an empty {@link Iterable}.
* Used by containers representing empty collections.
*
* @author Peter Nerg
* @since 1.4
*/
class EmptyContainer implements Iterable {
/**
* Always returns an empty iterator.
*
* @return An empty iterator
* @since 1.0
*/
@Override
public final Iterator iterator() {
return Collections.emptyIterator();
}
/**
* Always returns an empty stream.
*
* @return An empty stream
* @since 1.0
*/
public final Stream stream() {
return Stream.empty();
}
}