1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.bcel.util;
18
19 import java.util.LinkedList;
20
21 import org.apache.bcel.classfile.JavaClass;
22
23 /**
24 * Utility class implementing a (typesafe) queue of JavaClass objects.
25 */
26 public class ClassQueue {
27
28 /**
29 * @deprecated (since 6.0) will be made private; do not access
30 */
31 @Deprecated
32 protected LinkedList<JavaClass> vec = new LinkedList<>(); // TODO not used externally
33
34 public JavaClass dequeue() {
35 return vec.removeFirst();
36 }
37
38 public boolean empty() {
39 return vec.isEmpty();
40 }
41
42 public void enqueue(final JavaClass clazz) {
43 vec.addLast(clazz);
44 }
45
46 @Override
47 public String toString() {
48 return vec.toString();
49 }
50 }