/*
 * Copyright  2000-2004 The Apache Software Foundation
 *
 *  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 org.apache.bcel.util;

import java.util.LinkedList;
import org.apache.bcel.classfile.JavaClass;

/**
 * Utility class implementing a (typesafe) queue of JavaClass objects.
 * 
 * @version $Id: ClassQueue.java 386056 2006-03-15 11:31:56Z tcurdt $
 * @author <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
 */
public class ClassQueue implements java.io.Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	protected LinkedList<JavaClass> vec = new LinkedList<JavaClass>();

	public void enqueue(JavaClass clazz) {
		vec.addLast(clazz);
	}

	public JavaClass dequeue() {
		return vec.removeFirst();
	}

	public boolean empty() {
		return vec.isEmpty();
	}

	@Override
	public String toString() {
		return vec.toString();
	}
}
