ClassStack.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.Stack;

import org.apache.bcel.classfile.JavaClass;

/**
 * Utility class implementing a (typesafe) stack of JavaClass objects.
 *
 * @see Stack
 */
public class ClassStack {

    private final Stack<JavaClass> stack = new Stack<>();

    public boolean empty() {
        return stack.empty();
    }

    public JavaClass pop() {
        return stack.pop();
    }

    public void push(final JavaClass clazz) {
        stack.push(clazz);
    }

    public JavaClass top() {
        return stack.peek();
    }
}