001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 */
017package org.apache.bcel.classfile;
018
019import java.io.DataInput;
020import java.io.IOException;
021
022import org.apache.bcel.Const;
023
024/**
025 * This class represents a constant pool reference to a method.
026 */
027public final class ConstantMethodref extends ConstantCP {
028
029    /**
030     * Initialize from another object.
031     */
032    public ConstantMethodref(final ConstantMethodref c) {
033        super(Const.CONSTANT_Methodref, c.getClassIndex(), c.getNameAndTypeIndex());
034    }
035
036    /**
037     * Initialize instance from input data.
038     *
039     * @param input input stream
040     * @throws IOException if an I/O error occurs.
041     */
042    ConstantMethodref(final DataInput input) throws IOException {
043        super(Const.CONSTANT_Methodref, input);
044    }
045
046    /**
047     * @param classIndex Reference to the class containing the method
048     * @param nameAndTypeIndex and the method signature
049     */
050    public ConstantMethodref(final int classIndex, final int nameAndTypeIndex) {
051        super(Const.CONSTANT_Methodref, classIndex, nameAndTypeIndex);
052    }
053
054    /**
055     * Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
056     * I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
057     *
058     * @param v Visitor object
059     */
060    @Override
061    public void accept(final Visitor v) {
062        v.visitConstantMethodref(this);
063    }
064}