| // 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.utils.collections; |
| |
| import com.android.tools.r8.graph.DexEncodedField; |
| import com.android.tools.r8.graph.DexField; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.ProgramField; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Sets; |
| import java.util.IdentityHashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.stream.Stream; |
| |
| public class ProgramFieldSet implements Iterable<ProgramField> { |
| |
| private static final ProgramFieldSet EMPTY = new ProgramFieldSet(ImmutableMap.of()); |
| |
| private Map<DexField, ProgramField> backing; |
| |
| private ProgramFieldSet(Map<DexField, ProgramField> backing) { |
| this.backing = backing; |
| } |
| |
| public static ProgramFieldSet create() { |
| return new ProgramFieldSet(new IdentityHashMap<>()); |
| } |
| |
| public static ProgramFieldSet empty() { |
| return EMPTY; |
| } |
| |
| public boolean add(ProgramField field) { |
| ProgramField existing = backing.put(field.getReference(), field); |
| assert existing == null || existing.isStructurallyEqualTo(field); |
| return existing == null; |
| } |
| |
| public void addAll(Iterable<ProgramField> fields) { |
| fields.forEach(this::add); |
| } |
| |
| public void addAll(ProgramFieldSet fields) { |
| backing.putAll(fields.backing); |
| } |
| |
| public boolean createAndAdd(DexProgramClass clazz, DexEncodedField definition) { |
| return add(new ProgramField(clazz, definition)); |
| } |
| |
| public boolean contains(DexEncodedField field) { |
| return backing.containsKey(field.toReference()); |
| } |
| |
| public boolean contains(ProgramField field) { |
| return backing.containsKey(field.getReference()); |
| } |
| |
| public void clear() { |
| backing.clear(); |
| } |
| |
| public boolean isEmpty() { |
| return backing.isEmpty(); |
| } |
| |
| @Override |
| public Iterator<ProgramField> iterator() { |
| return backing.values().iterator(); |
| } |
| |
| public boolean remove(DexField field) { |
| ProgramField existing = backing.remove(field); |
| return existing != null; |
| } |
| |
| public boolean remove(DexEncodedField field) { |
| return remove(field.toReference()); |
| } |
| |
| public int size() { |
| return backing.size(); |
| } |
| |
| public Stream<ProgramField> stream() { |
| return backing.values().stream(); |
| } |
| |
| public Set<DexEncodedField> toDefinitionSet() { |
| assert backing instanceof IdentityHashMap; |
| Set<DexEncodedField> definitions = Sets.newIdentityHashSet(); |
| forEach(field -> definitions.add(field.getDefinition())); |
| return definitions; |
| } |
| } |