| // 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.ProgramField; |
| import com.android.tools.r8.utils.ProgramFieldEquivalence; |
| import com.google.common.base.Equivalence.Wrapper; |
| import com.google.common.collect.ImmutableMap; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.function.Supplier; |
| |
| public class ProgramFieldMap<V> extends ProgramMemberMap<ProgramField, V> { |
| |
| private static final ProgramFieldMap<?> EMPTY = new ProgramFieldMap<>(ImmutableMap::of); |
| |
| private ProgramFieldMap(Supplier<Map<Wrapper<ProgramField>, V>> backingFactory) { |
| super(backingFactory); |
| } |
| |
| public static <V> ProgramFieldMap<V> create() { |
| return new ProgramFieldMap<>(HashMap::new); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static <V> ProgramFieldMap<V> empty() { |
| return (ProgramFieldMap<V>) EMPTY; |
| } |
| |
| @Override |
| Wrapper<ProgramField> wrap(ProgramField method) { |
| return ProgramFieldEquivalence.get().wrap(method); |
| } |
| } |