|  | // Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file | 
|  | // for details. All rights reserved. Use of this source code is governed by a | 
|  | // BSD-style license that can be found in the LICENSE file. | 
|  | package com.android.tools.r8.utils; | 
|  |  | 
|  | import com.google.common.base.Equivalence; | 
|  |  | 
|  | /** Implements an equivalence that considers all objects to be the same. */ | 
|  | public class SingletonEquivalence<T> extends Equivalence<T> { | 
|  |  | 
|  | public SingletonEquivalence() {} | 
|  |  | 
|  | @Override | 
|  | protected boolean doEquivalent(T a, T b) { | 
|  | return true; | 
|  | } | 
|  |  | 
|  | @Override | 
|  | protected int doHash(T a) { | 
|  | return 0; | 
|  | } | 
|  | } |