| // 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.shaking; |
| |
| import com.android.tools.r8.graph.DexDefinition; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.DexReference; |
| import com.android.tools.r8.shaking.RootSetBuilder.RootSet; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| public class DiscardedChecker { |
| |
| private final Set<DexReference> checkDiscarded; |
| private final Iterable<DexProgramClass> classes; |
| |
| public DiscardedChecker(RootSet rootSet, Iterable<DexProgramClass> classes) { |
| this.checkDiscarded = new HashSet<>(rootSet.checkDiscarded); |
| this.classes = classes; |
| } |
| |
| public List<DexDefinition> run() { |
| List<DexDefinition> failed = new ArrayList<>(checkDiscarded.size()); |
| // TODO(b/131668850): Lookup the definition based on the reference. |
| for (DexProgramClass clazz : classes) { |
| checkItem(clazz, failed); |
| clazz.forEachMethod(method -> checkItem(method, failed)); |
| clazz.forEachField(field -> checkItem(field, failed)); |
| } |
| return failed; |
| } |
| |
| private void checkItem(DexDefinition item, List<DexDefinition> failed) { |
| DexReference reference = item.toReference(); |
| if (checkDiscarded.contains(reference)) { |
| failed.add(item); |
| } |
| } |
| } |