1 /*
2  * Copyright (C) 2007 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.dx.cf.attrib;
18 
19 import com.android.dx.util.MutabilityException;
20 
21 /**
22  * Attribute class for standard {@code InnerClasses} attributes.
23  */
24 public final class AttInnerClasses extends BaseAttribute {
25     /** {@code non-null;} attribute name for attributes of this type */
26     public static final String ATTRIBUTE_NAME = "InnerClasses";
27 
28     /** {@code non-null;} list of inner class entries */
29     private final InnerClassList innerClasses;
30 
31     /**
32      * Constructs an instance.
33      *
34      * @param innerClasses {@code non-null;} list of inner class entries
35      */
AttInnerClasses(InnerClassList innerClasses)36     public AttInnerClasses(InnerClassList innerClasses) {
37         super(ATTRIBUTE_NAME);
38 
39         try {
40             if (innerClasses.isMutable()) {
41                 throw new MutabilityException("innerClasses.isMutable()");
42             }
43         } catch (NullPointerException ex) {
44             // Translate the exception.
45             throw new NullPointerException("innerClasses == null");
46         }
47 
48         this.innerClasses = innerClasses;
49     }
50 
51     /** {@inheritDoc} */
52     @Override
byteLength()53     public int byteLength() {
54         return 8 + innerClasses.size() * 8;
55     }
56 
57     /**
58      * Gets the list of "inner class" entries associated with this instance.
59      *
60      * @return {@code non-null;} the list
61      */
getInnerClasses()62     public InnerClassList getInnerClasses() {
63         return innerClasses;
64     }
65 }
66