| /******************************************************************************* |
| * Copyright (c) 2003, 2004 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| /* |
| * Created on Sep 24, 2003 |
| * |
| */ |
| package org.eclipse.wst.common.internal.emf.resource; |
| |
| import java.util.ArrayList; |
| import java.util.EmptyStackException; |
| |
| /** |
| * An unsynchronized implementation of a Stack (LIFO) data structure. No casting is required when |
| * using this data structure. |
| * |
| * @author mdelder |
| */ |
| public class CacheEventStack extends ArrayList { |
| |
| /** |
| * |
| * @return the top of the stack without removing it |
| */ |
| public CacheEventNode peek() { |
| if (size() == 0) |
| throw new EmptyStackException(); |
| |
| return (CacheEventNode) get(size() - 1); |
| } |
| |
| /** |
| * |
| * @return the top of the stack and removing it |
| */ |
| public CacheEventNode pop() { |
| if (size() == 0) |
| throw new EmptyStackException(); |
| |
| return (CacheEventNode) remove(size() - 1); |
| } |
| |
| /** |
| * |
| * @param adapter |
| * A CENO to push onto the top of the stack |
| */ |
| public void push(CacheEventNode adapter) { |
| add(adapter); |
| } |
| |
| } |