1 /* 2 * Copyright 2018, 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 32 package org.jf.dexlib2.dexbacked.raw; 33 34 import org.jf.dexlib2.MethodHandleType; 35 import org.jf.dexlib2.dexbacked.raw.util.DexAnnotator; 36 import org.jf.dexlib2.util.AnnotatedBytes; 37 import org.jf.util.ExceptionWithContext; 38 39 import javax.annotation.Nonnull; 40 import javax.annotation.Nullable; 41 42 public class MethodHandleItem { 43 public static final int ITEM_SIZE = 8; 44 45 public static final int METHOD_HANDLE_TYPE_OFFSET = 0; 46 public static final int MEMBER_ID_OFFSET = 4; 47 48 @Nonnull makeAnnotator(@onnull DexAnnotator annotator, @Nonnull MapItem mapItem)49 public static SectionAnnotator makeAnnotator(@Nonnull DexAnnotator annotator, @Nonnull MapItem mapItem) { 50 return new SectionAnnotator(annotator, mapItem) { 51 @Nonnull @Override public String getItemName() { 52 return "method_handle_item"; 53 } 54 55 @Override 56 protected void annotateItem(@Nonnull AnnotatedBytes out, int itemIndex, @Nullable String itemIdentity) { 57 int methodHandleType = dexFile.readUshort(out.getCursor()); 58 out.annotate(2, "type = %s", MethodHandleType.toString(methodHandleType)); 59 out.annotate(2, "unused"); 60 61 int fieldOrMethodId = dexFile.readUshort(out.getCursor()); 62 String fieldOrMethodDescriptor; 63 switch (methodHandleType) { 64 case MethodHandleType.STATIC_PUT: 65 case MethodHandleType.STATIC_GET: 66 case MethodHandleType.INSTANCE_PUT: 67 case MethodHandleType.INSTANCE_GET: 68 fieldOrMethodDescriptor = FieldIdItem.getReferenceAnnotation(dexFile, fieldOrMethodId); 69 break; 70 case MethodHandleType.INVOKE_STATIC: 71 case MethodHandleType.INVOKE_INSTANCE: 72 case MethodHandleType.INVOKE_CONSTRUCTOR: 73 case MethodHandleType.INVOKE_DIRECT: 74 case MethodHandleType.INVOKE_INTERFACE: 75 fieldOrMethodDescriptor = MethodIdItem.getReferenceAnnotation(dexFile, fieldOrMethodId); 76 break; 77 default: 78 throw new ExceptionWithContext("Invalid method handle type: %d", methodHandleType); 79 } 80 81 out.annotate(2, "field_or_method_id = %s", fieldOrMethodDescriptor); 82 out.annotate(2, "unused"); 83 } 84 }; 85 } 86 87 88 89 } 90