1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 package com.sun.org.apache.bcel.internal.classfile;
   6 
   7 /* ====================================================================
   8  * The Apache Software License, Version 1.1
   9  *
  10  * Copyright (c) 2001 The Apache Software Foundation.  All rights
  11  * reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  *
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in
  22  *    the documentation and/or other materials provided with the
  23  *    distribution.
  24  *
  25  * 3. The end-user documentation included with the redistribution,
  26  *    if any, must include the following acknowledgment:
  27  *       "This product includes software developed by the
  28  *        Apache Software Foundation (http://www.apache.org/)."
  29  *    Alternately, this acknowledgment may appear in the software itself,
  30  *    if and wherever such third-party acknowledgments normally appear.
  31  *
  32  * 4. The names "Apache" and "Apache Software Foundation" and
  33  *    "Apache BCEL" must not be used to endorse or promote products
  34  *    derived from this software without prior written permission. For
  35  *    written permission, please contact apache@apache.org.
  36  *
  37  * 5. Products derived from this software may not be called "Apache",
  38  *    "Apache BCEL", nor may "Apache" appear in their name, without
  39  *    prior written permission of the Apache Software Foundation.
  40  *
  41  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  42  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  43  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  44  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
  45  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  46  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  47  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  48  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  49  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  50  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  51  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  * ====================================================================
  54  *
  55  * This software consists of voluntary contributions made by many
  56  * individuals on behalf of the Apache Software Foundation.  For more
  57  * information on the Apache Software Foundation, please see
  58  * <http://www.apache.org/>.
  59  */
  60 
  61 import com.sun.org.apache.bcel.internal.Constants;
  62 import java.io.*;
  63 
  64 /**
  65  * This class represents a constant pool reference to a field.
  66  *
  67  * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
  68  */
  69 public final class ConstantFieldref extends ConstantCP {
  70   /**
  71    * Initialize from another object.
  72    */
  73   public ConstantFieldref(ConstantFieldref c) {
  74     super(Constants.CONSTANT_Fieldref, c.getClassIndex(), c.getNameAndTypeIndex());
  75   }
  76 
  77   /**
  78    * Initialize instance from file data.
  79    *
  80    * @param file input stream
  81    * @throws IOException
  82    */
  83   ConstantFieldref(DataInputStream file) throws IOException
  84   {
  85     super(Constants.CONSTANT_Fieldref, file);
  86   }
  87 
  88   /**
  89    * @param class_index Reference to the class containing the Field
  90    * @param name_and_type_index and the Field signature
  91    */
  92   public ConstantFieldref(int class_index,
  93                            int name_and_type_index) {
  94     super(Constants.CONSTANT_Fieldref, class_index, name_and_type_index);
  95   }
  96 
  97   /**
  98    * Called by objects that are traversing the nodes of the tree implicitely
  99    * defined by the contents of a Java class. I.e., the hierarchy of Fields,
 100    * fields, attributes, etc. spawns a tree of objects.
 101    *
 102    * @param v Visitor object
 103    */
 104   public void accept(Visitor v) {
 105     v.visitConstantFieldref(this);
 106   }
 107 }