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.Stack; 25 import com.sun.org.apache.bcel.internal.classfile.JavaClass; 26 27 /** 28 * Utility class implementing a (typesafe) stack of JavaClass objects. 29 * 30 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 31 * @see Stack 32 */ 33 public class ClassStack implements java.io.Serializable { 34 private Stack stack = new Stack(); 35 36 public void push(JavaClass clazz) { stack.push(clazz); } 37 public JavaClass pop() { return (JavaClass)stack.pop(); } 38 public JavaClass top() { return (JavaClass)stack.peek(); } 39 public boolean empty() { return stack.empty(); } 40 }