| // Copyright (c) 2020, 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.optimize.info.field; |
| |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.DexDefinitionSupplier; |
| import com.android.tools.r8.graph.DexEncodedField; |
| import com.android.tools.r8.graph.GraphLens; |
| import com.android.tools.r8.graph.RewrittenPrototypeDescription.ArgumentInfoCollection; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| import java.util.function.BiConsumer; |
| |
| /** |
| * Represents that no information is known about the way a constructor initializes the instance |
| * fields of the newly created instance. |
| */ |
| public class EmptyInstanceFieldInitializationInfoCollection |
| extends InstanceFieldInitializationInfoCollection { |
| |
| private static final EmptyInstanceFieldInitializationInfoCollection INSTANCE = |
| new EmptyInstanceFieldInitializationInfoCollection(); |
| |
| private EmptyInstanceFieldInitializationInfoCollection() {} |
| |
| public static EmptyInstanceFieldInitializationInfoCollection getInstance() { |
| return INSTANCE; |
| } |
| |
| @Override |
| public void forEach( |
| DexDefinitionSupplier definitions, |
| BiConsumer<DexEncodedField, InstanceFieldInitializationInfo> consumer) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void forEachWithDeterministicOrder( |
| DexDefinitionSupplier definitions, |
| BiConsumer<DexEncodedField, InstanceFieldInitializationInfo> consumer) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public InstanceFieldInitializationInfo get(DexEncodedField field) { |
| return UnknownInstanceFieldInitializationInfo.getInstance(); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return true; |
| } |
| |
| @Override |
| public InstanceFieldInitializationInfoCollection fixupAfterParametersChanged( |
| ArgumentInfoCollection argumentInfoCollection) { |
| return this; |
| } |
| |
| @Override |
| public InstanceFieldInitializationInfoCollection rewrittenWithLens( |
| AppView<AppInfoWithLiveness> appView, GraphLens lens) { |
| return this; |
| } |
| |
| @Override |
| public String toString() { |
| return "EmptyInstanceFieldInitializationInfoCollection"; |
| } |
| } |