1 /* 2 * Copyright 2013, 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.analysis; 33 34 import org.jf.dexlib2.iface.reference.FieldReference; 35 import org.jf.dexlib2.iface.reference.MethodReference; 36 37 import javax.annotation.Nonnull; 38 import javax.annotation.Nullable; 39 40 public class UnknownClassProto implements TypeProto { 41 @Nonnull protected final ClassPath classPath; 42 43 public UnknownClassProto(@Nonnull ClassPath classPath) { 44 this.classPath = classPath; 45 } 46 47 @Override public String toString() { return "Ujava/lang/Object;"; } 48 @Nonnull @Override public ClassPath getClassPath() { return classPath; } 49 @Nullable @Override public String getSuperclass() { return null; } 50 @Override public boolean isInterface() { return false; } 51 @Override public boolean implementsInterface(@Nonnull String iface) { return false; } 52 53 @Nonnull @Override public TypeProto getCommonSuperclass(@Nonnull TypeProto other) { 54 if (other.getType().equals("Ljava/lang/Object;")) { 55 return other; 56 } 57 if (other instanceof ArrayProto) { 58 // if it's an array class, it's safe to assume this unknown class isn't related, and so 59 // java.lang.Object is the only possible superclass 60 return classPath.getClass("Ljava/lang/Object;"); 61 } 62 return this; 63 } 64 65 @Nonnull @Override public String getType() { 66 // use the otherwise used U prefix for an unknown/unresolvable class 67 return "Ujava/lang/Object;"; 68 } 69 70 @Override 71 @Nullable 72 public FieldReference getFieldByOffset(int fieldOffset) { 73 return classPath.getClass("Ljava/lang/Object;").getFieldByOffset(fieldOffset); 74 } 75 76 @Override 77 @Nullable 78 public MethodReference getMethodByVtableIndex(int vtableIndex) { 79 return classPath.getClass("Ljava/lang/Object;").getMethodByVtableIndex(vtableIndex); 80 } 81 } 82
