| // 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.utils; |
| |
| import com.android.tools.r8.FeatureSplit; |
| import com.android.tools.r8.features.ClassToFeatureSplitMap; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.DexClass; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| |
| public class AccessUtils { |
| |
| public static boolean isAccessibleInSameContextsAs( |
| DexType newType, DexType oldType, AppView<AppInfoWithLiveness> appView) { |
| DexItemFactory dexItemFactory = appView.dexItemFactory(); |
| DexType newBaseType = newType.toBaseType(dexItemFactory); |
| if (!newBaseType.isClassType()) { |
| return true; |
| } |
| DexClass newBaseClass = appView.definitionFor(newBaseType); |
| if (newBaseClass == null) { |
| return false; |
| } |
| |
| // If the new class is not public, then the old class must be non-public as well and reside in |
| // the same package as the new class. |
| DexType oldBaseType = oldType.toBaseType(dexItemFactory); |
| if (!newBaseClass.isPublic()) { |
| assert oldBaseType.isClassType(); |
| DexClass oldBaseClass = appView.definitionFor(oldBaseType); |
| if (oldBaseClass == null |
| || oldBaseClass.isPublic() |
| || !newBaseType.isSamePackage(oldBaseType)) { |
| return false; |
| } |
| } |
| |
| // If the new class is a program class, we need to check if it is in a feature. |
| if (newBaseClass.isProgramClass()) { |
| ClassToFeatureSplitMap classToFeatureSplitMap = appView.appInfo().getClassToFeatureSplitMap(); |
| if (classToFeatureSplitMap != null) { |
| FeatureSplit newFeatureSplit = |
| classToFeatureSplitMap.getFeatureSplit(newBaseClass.asProgramClass(), appView); |
| if (!newFeatureSplit.isBase() |
| && newFeatureSplit != classToFeatureSplitMap.getFeatureSplit(oldBaseType, appView)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| } |