1 
   2 /*
   3  * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.  Oracle designates this
   9  * particular file as subject to the "Classpath" exception as provided
  10  * by Oracle in the LICENSE file that accompanied this code.
  11  *
  12  * This code is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * version 2 for more details (a copy is included in the LICENSE file that
  16  * accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License version
  19  * 2 along with this work; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  21  *
  22  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  23  * or visit www.oracle.com if you need additional information or have any
  24  * questions.
  25  */
  26 
  27 package com.sun.tools.classfile;
  28 
  29 import java.io.IOException;
  30 
  31 /**
  32  * See JVMS, section 4.8.7.
  33  *
  34  *  <p><b>This is NOT part of any supported API.
  35  *  If you write code that depends on this, you do so at your own risk.
  36  *  This code and its internal interfaces are subject to change or
  37  *  deletion without notice.</b>
  38  */
  39 public class EnclosingMethod_attribute extends Attribute {
  40     EnclosingMethod_attribute(ClassReader cr, int name_index, int length) throws IOException {
  41         super(name_index, length);
  42         class_index = cr.readUnsignedShort();
  43         method_index = cr.readUnsignedShort();
  44     }
  45 
  46     public EnclosingMethod_attribute(ConstantPool constant_pool, int class_index, int method_index)
  47             throws ConstantPoolException {
  48         this(constant_pool.getUTF8Index(Attribute.EnclosingMethod), class_index, method_index);
  49     }
  50 
  51     public EnclosingMethod_attribute(int name_index, int class_index, int method_index) {
  52         super(name_index, 4);
  53         this.class_index = class_index;
  54         this.method_index = method_index;
  55     }
  56 
  57     public String getClassName(ConstantPool constant_pool) throws ConstantPoolException {
  58         return constant_pool.getClassInfo(class_index).getName();
  59     }
  60 
  61     public String getMethodName(ConstantPool constant_pool) throws ConstantPoolException {
  62         if (method_index == 0)
  63             return "";
  64         return constant_pool.getNameAndTypeInfo(method_index).getName();
  65     }
  66 
  67     public <R, D> R accept(Visitor<R, D> visitor, D data) {
  68         return visitor.visitEnclosingMethod(this, data);
  69     }
  70 
  71     public final int class_index;
  72     public final int method_index;
  73 }