| // Copyright 2018 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.devtools.build.lib.skyframe.trimming; |
| |
| import com.google.auto.value.AutoValue; |
| |
| /** |
| * A pair of some key type and a valid/invalid state, for use in {@link TrimmedConfigurationCache}. |
| */ |
| @AutoValue |
| abstract class KeyAndState<KeyT> { |
| enum State { |
| VALID(true), |
| POSSIBLY_INVALID(false); |
| |
| private final boolean isKnownValid; |
| |
| State(boolean isKnownValid) { |
| this.isKnownValid = isKnownValid; |
| } |
| |
| boolean isKnownValid() { |
| return isKnownValid; |
| } |
| } |
| |
| abstract KeyT getKey(); |
| |
| abstract State getState(); |
| |
| static <KeyT> KeyAndState<KeyT> create(KeyT key) { |
| return create(key, State.VALID); |
| } |
| |
| private static <KeyT> KeyAndState<KeyT> create(KeyT key, State state) { |
| return new AutoValue_KeyAndState<>(key, state); |
| } |
| |
| KeyAndState<KeyT> asValidated() { |
| if (State.VALID.equals(getState())) { |
| return this; |
| } |
| return create(getKey(), State.VALID); |
| } |
| |
| KeyAndState<KeyT> asInvalidated() { |
| if (State.POSSIBLY_INVALID.equals(getState())) { |
| return this; |
| } |
| return create(getKey(), State.POSSIBLY_INVALID); |
| } |
| } |