1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.util; 23 24 import java.util.LinkedList; 25 import com.sun.org.apache.bcel.internal.classfile.JavaClass; 26 27 /** 28 * Utility class implementing a (typesafe) queue of JavaClass 29 * objects. 30 * 31 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 32 * @see ClassVector 33 */ 34 public class ClassQueue implements java.io.Serializable { 35 protected LinkedList vec = new LinkedList(); 36 37 public void enqueue(JavaClass clazz) { vec.addLast(clazz); } 38 39 public JavaClass dequeue() { 40 return (JavaClass)vec.removeFirst(); 41 } 42 43 public boolean empty() { return vec.isEmpty(); } 44 45 public String toString() { 46 return vec.toString(); 47 } 48 }