| /******************************************************************************* |
| * Copyright (c) 2009, 2014 Xored Software Inc and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Xored Software Inc - initial API and implementation and/or initial documentation |
| *******************************************************************************/ |
| package org.eclipse.rcptt.util; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| public class ListUtil { |
| |
| public static <T> List<T> filter(Iterable<? extends T> input, |
| Predicate<T> predicate) { |
| List<T> result = new ArrayList<T>(); |
| for (T element : input) { |
| if (predicate.apply(element)) { |
| result.add(element); |
| } |
| } |
| return result; |
| } |
| |
| public static <T> void excludeInPlace(Iterable<T> input, |
| Predicate<T> predicate) { |
| Iterator<T> iterator = input.iterator(); |
| while (iterator.hasNext()) { |
| if (predicate.apply(iterator.next())) { |
| iterator.remove(); |
| } |
| } |
| } |
| |
| // |
| |
| public static <T> Iterable<T> reverse(final List<T> input) { |
| return new Iterable<T>() { |
| @Override |
| public Iterator<T> iterator() { |
| return new Iterator<T>() { |
| |
| int i = input.size() - 1; |
| |
| @Override |
| public boolean hasNext() { |
| return i >= 0; |
| } |
| |
| @Override |
| public T next() { |
| return input.get(i--); |
| } |
| |
| @Override |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| }; |
| } |
| }; |
| } |
| |
| } |