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 CONSTANT_Class_info getInnerClassInfo(ConstantPool constant_pool) throws ConstantPoolException {

    76             if (inner_class_info_index == 0)

    77                 return null;

    78             return constant_pool.getClassInfo(inner_class_info_index);

    79         }

    80 

    81         public CONSTANT_Class_info getOuterClassInfo(ConstantPool constant_pool) throws ConstantPoolException {

    82             if (outer_class_info_index == 0)

    83                 return null;

    84             return constant_pool.getClassInfo(outer_class_info_index);

    85         }

    86 

    87         public String getInnerName(ConstantPool constant_pool) throws ConstantPoolException {

    88             if (inner_name_index == 0)

    89                 return null;

    90             return constant_pool.getUTF8Value(inner_name_index);

    91         }

    92 

    93         public static int length() {

    94             return 8;

    95         }

    96 

    97         public final int inner_class_info_index;

    98         public final int outer_class_info_index;

    99         public final int inner_name_index;

   100         public final AccessFlags inner_class_access_flags;

   101     }

   102 }