DexBackedAnnotationEncodedValue.java revision 7c71ad420dbdfe2e36f205d335a261435181a25b
1/* 2 * Copyright 2012, Google Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32package org.jf.dexlib2.dexbacked.value; 33 34import org.jf.dexlib2.DexFile; 35import org.jf.dexlib2.DexFileReader; 36import org.jf.dexlib2.ValueType; 37import org.jf.dexlib2.dexbacked.DexBackedAnnotationElement; 38import org.jf.dexlib2.dexbacked.util.VariableSizeList; 39import org.jf.dexlib2.iface.AnnotationElement; 40import org.jf.dexlib2.iface.value.AnnotationEncodedValue; 41 42import javax.annotation.Nonnull; 43import java.util.List; 44 45public class DexBackedAnnotationEncodedValue implements AnnotationEncodedValue { 46 @Nonnull public final DexFile dexFile; 47 public final String type; 48 private final int elementsOffset; 49 50 public DexBackedAnnotationEncodedValue(@Nonnull DexFileReader dexFileReader) { 51 this.dexFile = dexFileReader.getDexFile(); 52 this.type = dexFileReader.getString(dexFileReader.readSmallUleb128()); 53 this.elementsOffset = dexFileReader.getOffset(); 54 skipElements(dexFileReader); 55 } 56 57 public static void skipFrom(DexFileReader reader) { 58 reader.skipUleb128(); 59 skipElements(reader); 60 } 61 62 private static void skipElements(DexFileReader reader) { 63 int elementCount = reader.readSmallUleb128(); 64 for (int i=0; i<elementCount; i++) { 65 reader.skipUleb128(); 66 DexBackedEncodedValue.skipFrom(reader); 67 } 68 } 69 70 @Override public int getValueType() { return ValueType.ANNOTATION; } 71 @Nonnull @Override public String getType() { return type; } 72 73 @Nonnull 74 @Override 75 public List<? extends AnnotationElement> getElements() { 76 DexFileReader reader = dexFile.readerAt(elementsOffset); 77 final int size = reader.readSmallUleb128(); 78 79 return new VariableSizeList<AnnotationElement>(dexFile, reader.getOffset()) { 80 @Nonnull 81 @Override 82 protected AnnotationElement readItem(DexFileReader dexFileReader, int index) { 83 return new DexBackedAnnotationElement(dexFileReader); 84 } 85 86 @Override public int size() { return size;} 87 }; 88 } 89} 90