1 /* 2 * Copyright 2018, Google LLC 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google LLC nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 package com.android.tools.smali.dexlib2.base.reference; 32 33 import com.android.tools.smali.dexlib2.iface.reference.FieldReference; 34 import com.android.tools.smali.dexlib2.iface.reference.MethodHandleReference; 35 import com.android.tools.smali.dexlib2.iface.reference.MethodReference; 36 import com.android.tools.smali.dexlib2.iface.reference.Reference; 37 import com.android.tools.smali.dexlib2.formatter.DexFormatter; 38 39 import javax.annotation.Nonnull; 40 41 public abstract class BaseMethodHandleReference extends BaseReference implements 42 MethodHandleReference { 43 @Override hashCode()44 public int hashCode() { 45 int hashCode = getMethodHandleType(); 46 hashCode = hashCode*31 + getMemberReference().hashCode(); 47 return hashCode; 48 } 49 50 @Override equals(Object o)51 public boolean equals(Object o) { 52 if (o != null && o instanceof MethodHandleReference) { 53 MethodHandleReference other = (MethodHandleReference) o; 54 return getMethodHandleType() == other.getMethodHandleType() && 55 getMemberReference().equals(other.getMemberReference()); 56 } 57 return false; 58 } 59 60 @Override compareTo(@onnull MethodHandleReference o)61 public int compareTo(@Nonnull MethodHandleReference o) { 62 int res = Integer.compare(getMethodHandleType(), o.getMethodHandleType()); 63 if (res != 0) return res; 64 65 Reference reference = getMemberReference(); 66 if (reference instanceof FieldReference) { 67 // "This should never happen", but if it does, we'll arbitrarily say a field reference compares less than 68 // a method reference 69 if (!(o.getMemberReference() instanceof FieldReference)) { 70 return -1; 71 } 72 return ((FieldReference) reference).compareTo((FieldReference) o.getMemberReference()); 73 } else { 74 if (!(o.getMemberReference() instanceof MethodReference)) { 75 return 1; 76 } 77 return ((MethodReference) reference).compareTo((MethodReference) o.getMemberReference()); 78 } 79 } 80 toString()81 @Override public String toString() { 82 return DexFormatter.INSTANCE.getMethodHandle(this); 83 } 84 } 85