1 /* 2 * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.tools.classfile; 27 28 import java.io.IOException; 29 30 import com.sun.tools.classfile.ConstantPool.*; 31 32 /** 33 * See JVMS, section 4.8.6. 34 * 35 * <p><b>This is NOT part of any supported API. 36 * If you write code that depends on this, you do so at your own risk. 37 * This code and its internal interfaces are subject to change or 38 * deletion without notice.</b> 39 */ 40 public class InnerClasses_attribute extends Attribute { 41 InnerClasses_attribute(ClassReader cr, int name_index, int length) throws IOException { 42 super(name_index, length); 43 number_of_classes = cr.readUnsignedShort(); 44 classes = new Info[number_of_classes]; 45 for (int i = 0; i < number_of_classes; i++) 46 classes[i] = new Info(cr); 47 } 48 49 public InnerClasses_attribute(ConstantPool constant_pool, Info[] classes) 50 throws ConstantPoolException { 51 this(constant_pool.getUTF8Index(Attribute.InnerClasses), classes); 52 } 53 54 public InnerClasses_attribute(int name_index, Info[] classes) { 55 super(name_index, 2 + Info.length() * classes.length); 56 this.number_of_classes = classes.length; 57 this.classes = classes; 58 } 59 60 public <R, D> R accept(Visitor<R, D> visitor, D data) { 61 return visitor.visitInnerClasses(this, data); 62 } 63 64 public final int number_of_classes; 65 public final Info[] classes; 66 67 public static class Info { 68 Info(ClassReader cr) throws IOException { 69 inner_class_info_index = cr.readUnsignedShort(); 70 outer_class_info_index = cr.readUnsignedShort(); 71 inner_name_index = cr.readUnsignedShort(); 72 inner_class_access_flags = new AccessFlags(cr.readUnsignedShort()); 73 } 74 75 public Info(int inner_class_info_index, int outer_class_info_index, int inner_name_index, AccessFlags inner_class_access_flags) { 76 this.inner_class_info_index = inner_class_info_index; 77 this.outer_class_info_index = outer_class_info_index; 78 this.inner_name_index = inner_name_index; 79 this.inner_class_access_flags = inner_class_access_flags; 80 } 81 82 public CONSTANT_Class_info getInnerClassInfo(ConstantPool constant_pool) throws ConstantPoolException { 83 if (inner_class_info_index == 0) 84 return null; 85 return constant_pool.getClassInfo(inner_class_info_index); 86 } 87 88 public CONSTANT_Class_info getOuterClassInfo(ConstantPool constant_pool) throws ConstantPoolException { 89 if (outer_class_info_index == 0) 90 return null; 91 return constant_pool.getClassInfo(outer_class_info_index); 92 } 93 94 public String getInnerName(ConstantPool constant_pool) throws ConstantPoolException { 95 if (inner_name_index == 0) 96 return null; 97 return constant_pool.getUTF8Value(inner_name_index); 98 } 99 100 public static int length() { 101 return 8; 102 } 103 104 public final int inner_class_info_index; 105 public final int outer_class_info_index; 106 public final int inner_name_index; 107 public final AccessFlags inner_class_access_flags; 108 } 109 }