| // Copyright (c) 2019, 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.value; |
| |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.GraphLens; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| |
| public class NullOrAbstractValue extends AbstractValue { |
| |
| private final AbstractValue value; |
| |
| private NullOrAbstractValue(AbstractValue value) { |
| this.value = value; |
| } |
| |
| public static AbstractValue create(AbstractValue value) { |
| if (value.isBottom() || value.isUnknown() || value.isNull() || value.isNullOrAbstractValue()) { |
| return value; |
| } |
| return new NullOrAbstractValue(value); |
| } |
| |
| @Override |
| public boolean isNonTrivial() { |
| return true; |
| } |
| |
| @Override |
| public boolean isNullOrAbstractValue() { |
| return true; |
| } |
| |
| @Override |
| public NullOrAbstractValue asNullOrAbstractValue() { |
| return this; |
| } |
| |
| public AbstractValue getNonNullValue() { |
| return value; |
| } |
| |
| @Override |
| public NullOrAbstractValue rewrittenWithLens( |
| AppView<AppInfoWithLiveness> appView, GraphLens lens) { |
| return new NullOrAbstractValue(value.rewrittenWithLens(appView, lens)); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o == null) { |
| return false; |
| } |
| return this.getClass() == o.getClass() && value.equals(((NullOrAbstractValue) o).value); |
| } |
| |
| @Override |
| public int hashCode() { |
| return value.hashCode() * 7; |
| } |
| |
| @Override |
| public String toString() { |
| return "Null or " + value.toString(); |
| } |
| } |