1 /*
2  * Copyright (C) 2014 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 dexfuzz.rawdex;
18 
19 import java.io.IOException;
20 
21 public class EncodedField implements RawDexObject {
22   public int fieldIdxDiff;
23   public int accessFlags;
24 
25   @Override
read(DexRandomAccessFile file)26   public void read(DexRandomAccessFile file) throws IOException {
27     fieldIdxDiff = file.readUleb128();
28     accessFlags = file.readUleb128();
29   }
30 
31   @Override
write(DexRandomAccessFile file)32   public void write(DexRandomAccessFile file) throws IOException {
33     file.writeUleb128(fieldIdxDiff);
34     file.writeUleb128(accessFlags);
35   }
36 
37   @Override
incrementIndex(IndexUpdateKind kind, int insertedIdx)38   public void incrementIndex(IndexUpdateKind kind, int insertedIdx) {
39     // Do nothing.
40     // NB: our idx_diff is handled in ClassDataItem...
41   }
42 
isVolatile()43   public boolean isVolatile() {
44     return ((accessFlags & Flag.ACC_VOLATILE.getValue()) != 0);
45   }
46 
47   /**
48    * Set/unset the volatile flag for this EncodedField.
49    */
setVolatile(boolean turnOn)50   public void setVolatile(boolean turnOn) {
51     if (turnOn) {
52       accessFlags |= Flag.ACC_VOLATILE.getValue();
53     } else {
54       accessFlags &= ~(Flag.ACC_VOLATILE.getValue());
55     }
56   }
57 
58   private static enum Flag {
59     ACC_PUBLIC(0x1),
60     ACC_PRIVATE(0x2),
61     ACC_PROTECTED(0x4),
62     ACC_STATIC(0x8),
63     ACC_FINAL(0x10),
64     ACC_VOLATILE(0x40),
65     ACC_TRANSIENT(0x80),
66     ACC_SYNTHETIC(0x1000),
67     ACC_ENUM(0x4000);
68 
69     private int value;
70 
Flag(int value)71     private Flag(int value) {
72       this.value = value;
73     }
74 
getValue()75     public int getValue() {
76       return value;
77     }
78   }
79 }
80