| // Copyright 2023 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.serialization; |
| |
| import com.google.protobuf.CodedInputStream; |
| import java.io.IOException; |
| |
| /** Codec variant that interns the deserialization result. */ |
| public abstract class InterningObjectCodec<T> implements ObjectCodec<T> { |
| |
| @Override |
| public final MemoizationStrategy getStrategy() { |
| // There is no fixed reference to an interned object until after it has been constructed and |
| // passes through the interner. Therefore this is always MEMOIZE_AFTER. |
| return MemoizationStrategy.MEMOIZE_AFTER; |
| } |
| |
| /** |
| * Adapter for synchronous contexts. |
| * |
| * <p>Deserializes using {@link #deserializeInterned} then calls {@link #intern} on the result. |
| */ |
| @Override |
| public final T deserialize(DeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| return intern(deserializeInterned(context, codedIn)); |
| } |
| |
| /** Performs the deserialization work. */ |
| public abstract T deserializeInterned( |
| AsyncDeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException; |
| |
| /** Interns the result of {@link #deserializeInterned}. */ |
| public abstract T intern(T value); |
| } |