/*
 * 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
 *
 *   https://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.classfile;

import java.io.DataInput;
import java.io.IOException;

import org.apache.bcel.Const;

/**
 * This class represents a constant pool reference to a method.
 */
public final class ConstantMethodref extends ConstantCP {

    /**
     * Initialize from another object.
     *
     * @param c Source to copy.
     */
    public ConstantMethodref(final ConstantMethodref c) {
        super(Const.CONSTANT_Methodref, c.getClassIndex(), c.getNameAndTypeIndex());
    }

    /**
     * Initialize instance from input data.
     *
     * @param input input stream.
     * @throws IOException if an I/O error occurs.
     */
    ConstantMethodref(final DataInput input) throws IOException {
        super(Const.CONSTANT_Methodref, input);
    }

    /**
     * Constructs a ConstantMethodref.
     *
     * @param classIndex Reference to the class containing the method.
     * @param nameAndTypeIndex and the method signature.
     */
    public ConstantMethodref(final int classIndex, final int nameAndTypeIndex) {
        super(Const.CONSTANT_Methodref, classIndex, nameAndTypeIndex);
    }

    /**
     * Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
     * I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
     *.
     * @param v Visitor object.
     */
    @Override
    public void accept(final Visitor v) {
        v.visitConstantMethodref(this);
    }
}
