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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   */
18  package org.apache.bcel.classfile;
19  
20  import java.io.DataInputStream;
21  import java.io.IOException;
22  import org.apache.bcel.Constants;
23  
24  /** 
25   * This class represents a constant pool reference to a method.
26   *
27   * @version $Id: ConstantMethodref.html 898356 2014-02-18 05:44:40Z ggregory $
28   * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
29   */
30  public final class ConstantMethodref extends ConstantCP {
31  
32      private static final long serialVersionUID = -864296320352750967L;
33  
34  
35      /**
36       * Initialize from another object.
37       */
38      public ConstantMethodref(ConstantMethodref c) {
39          super(Constants.CONSTANT_Methodref, c.getClassIndex(), c.getNameAndTypeIndex());
40      }
41  
42  
43      /**
44       * Initialize instance from file data.
45       *
46       * @param file input stream
47       * @throws IOException
48       */
49      ConstantMethodref(DataInputStream file) throws IOException {
50          super(Constants.CONSTANT_Methodref, file);
51      }
52  
53  
54      /**
55       * @param class_index Reference to the class containing the method
56       * @param name_and_type_index and the method signature
57       */
58      public ConstantMethodref(int class_index, int name_and_type_index) {
59          super(Constants.CONSTANT_Methodref, class_index, name_and_type_index);
60      }
61  
62  
63      /**
64       * Called by objects that are traversing the nodes of the tree implicitely
65       * defined by the contents of a Java class. I.e., the hierarchy of methods,
66       * fields, attributes, etc. spawns a tree of objects.
67       *
68       * @param v Visitor object
69       */
70      @Override
71      public void accept( Visitor v ) {
72          v.visitConstantMethodref(this);
73      }
74  }