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.rop.cst.CstString;
20 
21 /**
22  * Attribute class for standard {@code SourceDebugExtension} attributes.
23  */
24 public final class AttSourceDebugExtension extends BaseAttribute {
25     /** {@code non-null;} attribute name for attributes of this type */
26     public static final String ATTRIBUTE_NAME = "SourceDebugExtension";
27 
28     /** {@code non-null;} Contents of SMAP */
29     private final CstString smapString;
30 
31     /**
32      * Constructs an instance.
33      *
34      * @param smapString {@code non-null;} the SMAP data from the class file.
35      */
AttSourceDebugExtension(CstString smapString)36     public AttSourceDebugExtension(CstString smapString) {
37         super(ATTRIBUTE_NAME);
38 
39         if (smapString == null) {
40             throw new NullPointerException("smapString == null");
41         }
42 
43         this.smapString = smapString;
44     }
45 
46     /** {@inheritDoc} */
47     @Override
byteLength()48     public int byteLength() {
49         // Add 6 for the standard attribute header: the attribute name
50         // index (2 bytes) and the attribute length (4 bytes).
51         return 6 + smapString.getUtf8Size();
52     }
53 
54     /**
55      * Gets the SMAP data of this instance.
56      *
57      * @return {@code non-null;} the SMAP data.
58      */
getSmapString()59     public CstString getSmapString() {
60         return smapString;
61     }
62 }
63