001 /*
002 * Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package com.sun.tools.classfile;
027
028 import java.io.IOException;
029
030 import com.sun.tools.classfile.ConstantPool.*;
031
032 /**
033 * See JVMS3, section 4.8.6.
034 *
035 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
036 * you write code that depends on this, you do so at your own risk.
037 * This code and its internal interfaces are subject to change or
038 * deletion without notice.</b>
039 */
040 public class InnerClasses_attribute extends Attribute {
041 InnerClasses_attribute(ClassReader cr, int name_index, int length) throws IOException {
042 super(name_index, length);
043 number_of_classes = cr.readUnsignedShort();
044 classes = new Info[number_of_classes];
045 for (int i = 0; i < number_of_classes; i++)
046 classes[i] = new Info(cr);
047 }
048
049 public InnerClasses_attribute(ConstantPool constant_pool, Info[] classes)
050 throws ConstantPoolException {
051 this(constant_pool.getUTF8Index(Attribute.InnerClasses), classes);
052 }
053
054 public InnerClasses_attribute(int name_index, Info[] classes) {
055 super(name_index, 2 + Info.length() * classes.length);
056 this.number_of_classes = classes.length;
057 this.classes = classes;
058 }
059
060 public <R, D> R accept(Visitor<R, D> visitor, D data) {
061 return visitor.visitInnerClasses(this, data);
062 }
063
064 public final int number_of_classes;
065 public final Info[] classes;
066
067 public static class Info {
068 Info(ClassReader cr) throws IOException {
069 inner_class_info_index = cr.readUnsignedShort();
070 outer_class_info_index = cr.readUnsignedShort();
071 inner_name_index = cr.readUnsignedShort();
072 inner_class_access_flags = new AccessFlags(cr.readUnsignedShort());
073 }
074
075 public CONSTANT_Class_info getInnerClassInfo(ConstantPool constant_pool) throws ConstantPoolException {
076 if (inner_class_info_index == 0)
077 return null;
078 return constant_pool.getClassInfo(inner_class_info_index);
079 }
080
081 public CONSTANT_Class_info getOuterClassInfo(ConstantPool constant_pool) throws ConstantPoolException {
082 if (outer_class_info_index == 0)
083 return null;
084 return constant_pool.getClassInfo(outer_class_info_index);
085 }
086
087 public String getInnerName(ConstantPool constant_pool) throws ConstantPoolException {
088 if (inner_name_index == 0)
089 return null;
090 return constant_pool.getUTF8Value(inner_name_index);
091 }
092
093 public static int length() {
094 return 8;
095 }
096
097 public final int inner_class_info_index;
098 public final int outer_class_info_index;
099 public final int inner_name_index;
100 public final AccessFlags inner_class_access_flags;
101 }
102 }