| // Copyright (c) 2021, 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.fieldaccess.state; |
| |
| import com.android.tools.r8.ir.analysis.value.AbstractValue; |
| import com.android.tools.r8.ir.analysis.value.AbstractValueFactory; |
| |
| /** Represents that nothing is known about the values that may flow into a given field. */ |
| public class UnknownFieldState extends FieldState { |
| |
| private static final UnknownFieldState INSTANCE = new UnknownFieldState(); |
| |
| private UnknownFieldState() {} |
| |
| public static UnknownFieldState getInstance() { |
| return INSTANCE; |
| } |
| |
| @Override |
| public AbstractValue getAbstractValue(AbstractValueFactory abstractValueFactory) { |
| return AbstractValue.unknown(); |
| } |
| |
| @Override |
| public boolean isUnknown() { |
| return true; |
| } |
| } |