| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package dexfuzz.rawdex; |
| |
| import java.io.IOException; |
| |
| public class EncodedValue implements RawDexObject { |
| public byte valueArg; |
| public byte valueType; |
| public byte[] value; |
| public EncodedArray encodedArray; |
| public EncodedAnnotation encodedAnnotation; |
| |
| private static final byte VALUE_BYTE = 0x00; |
| private static final byte VALUE_ARRAY = 0x1c; |
| private static final byte VALUE_ANNOTATION = 0x1d; |
| private static final byte VALUE_NULL = 0x1e; |
| private static final byte VALUE_BOOLEAN = 0x1f; |
| |
| @Override |
| public void read(DexRandomAccessFile file) throws IOException { |
| int valueArgAndType = file.readUnsignedByte(); |
| |
| // Get lower 5 bits. |
| valueType = (byte) (valueArgAndType & 0x1f); |
| // Get upper 3 bits. |
| valueArg = (byte) ((valueArgAndType & 0xe0) >> 5); |
| |
| int size = 0; |
| |
| switch (valueType) { |
| case VALUE_BYTE: |
| size = 1; |
| break; |
| case VALUE_ARRAY: |
| (encodedArray = new EncodedArray()).read(file); |
| size = 0; // So we don't read into value. |
| break; |
| case VALUE_ANNOTATION: |
| (encodedAnnotation = new EncodedAnnotation()).read(file); |
| size = 0; // So we don't read into value. |
| break; |
| case VALUE_NULL: |
| case VALUE_BOOLEAN: |
| // No value |
| size = 0; |
| break; |
| default: |
| // All others encode value_arg as (size - 1), so... |
| size = valueArg + 1; |
| break; |
| } |
| |
| if (size != 0) { |
| value = new byte[size]; |
| for (int i = 0; i < size; i++) { |
| value[i] = file.readByte(); |
| } |
| } |
| } |
| |
| @Override |
| public void write(DexRandomAccessFile file) throws IOException { |
| int valueArgAndType = ((valueType) | (valueArg << 5)); |
| file.writeByte(valueArgAndType); |
| |
| if (encodedArray != null) { |
| encodedArray.write(file); |
| } else if (encodedAnnotation != null) { |
| encodedAnnotation.write(file); |
| } else if (value != null) { |
| file.write(value); |
| } |
| } |
| |
| @Override |
| public void incrementIndex(IndexUpdateKind kind, int insertedIdx) { |
| if (encodedArray != null) { |
| encodedArray.incrementIndex(kind, insertedIdx); |
| } else if (encodedAnnotation != null) { |
| encodedAnnotation.incrementIndex(kind, insertedIdx); |
| } |
| } |
| } |