| // Copyright (c) 2017, 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.ir.analysis.type; |
| |
| public class Bottom extends TypeLatticeElement { |
| private static final Bottom INSTANCE = new Bottom(); |
| |
| private Bottom() { |
| super(true); |
| } |
| |
| @Override |
| TypeLatticeElement asNullable() { |
| return this; |
| } |
| |
| static Bottom getInstance() { |
| return INSTANCE; |
| } |
| |
| @Override |
| boolean isBottom() { |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return "BOTTOM (empty)"; |
| } |
| } |