| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.commons.functor.core.algorithm; |
| |
| import java.io.Serializable; |
| import java.util.ListIterator; |
| |
| import org.apache.commons.functor.BinaryProcedure; |
| import org.apache.commons.functor.Function; |
| |
| /** |
| * Implements an in-place transformation of a ListIterator's contents. |
| * |
| * @param <T> the arguments type |
| * @version $Revision$ $Date$ |
| */ |
| public final class InPlaceTransform<T> |
| implements BinaryProcedure<ListIterator<T>, Function<? super T, ? extends T>>, Serializable { |
| /** |
| * serialVersionUID declaration. |
| */ |
| private static final long serialVersionUID = 4365206078517376006L; |
| /** |
| * A static {@code InPlaceTransform} instance reference. |
| */ |
| private static final InPlaceTransform<Object> INSTANCE = new InPlaceTransform<Object>(); |
| |
| /** |
| * {@inheritDoc} |
| * @param left {@link ListIterator} |
| * @param right {@link Function} |
| */ |
| public void run(ListIterator<T> left, Function<? super T, ? extends T> right) { |
| while (left.hasNext()) { |
| left.set(right.evaluate(left.next())); |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean equals(Object obj) { |
| return obj == this || obj != null && obj.getClass().equals(getClass()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public int hashCode() { |
| return System.identityHashCode(INSTANCE); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String toString() { |
| return "InPlaceTransform"; |
| } |
| |
| /** |
| * Get an {@link InPlaceTransform} instance. |
| * @return InPlaceTransform |
| */ |
| public static InPlaceTransform<Object> instance() { |
| return INSTANCE; |
| } |
| |
| } |