com.google.gwt.emul.java.lang.Iterable Maven / Gradle / Ivy
/*
* Copyright 2007 Google Inc.
*
* 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 java.lang;
import static javaemul.internal.InternalPreconditions.checkNotNull;
import java.util.Iterator;
import java.util.Spliterator;
import java.util.Spliterators;
import java.util.function.Consumer;
/**
* Allows an instance of a class implementing this interface to be used in the
* foreach statement.
* See
* the official Java API doc for details.
*
* @param type of returned iterator
*/
public interface Iterable {
Iterator iterator();
default void forEach(Consumer action) {
checkNotNull(action);
for (T t : this) {
action.accept(t);
}
}
default Spliterator spliterator() {
return Spliterators.spliteratorUnknownSize(iterator(), 0);
}
}