| // 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.collect; |
| |
| import com.google.common.collect.FluentIterable; |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.skyframe.serialization.DeserializationContext; |
| import com.google.devtools.build.lib.skyframe.serialization.ObjectCodec; |
| import com.google.devtools.build.lib.skyframe.serialization.SerializationContext; |
| import com.google.devtools.build.lib.skyframe.serialization.SerializationException; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.protobuf.CodedInputStream; |
| import com.google.protobuf.CodedOutputStream; |
| import java.io.IOException; |
| |
| @SuppressWarnings("rawtypes") |
| class IterableCodecs { |
| static class FluentIterableCodec implements ObjectCodec<FluentIterable> { |
| @Override |
| public Class<FluentIterable> getEncodedClass() { |
| return FluentIterable.class; |
| } |
| |
| @Override |
| public void serialize( |
| SerializationContext context, FluentIterable obj, CodedOutputStream codedOut) |
| throws SerializationException, IOException { |
| IterableCodecs.serialize(context, obj, codedOut); |
| } |
| |
| @Override |
| public FluentIterable deserialize(DeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| return FluentIterable.from(IterableCodecs.deserialize(context, codedIn)); |
| } |
| } |
| |
| static class IterablesChainCodec implements ObjectCodec<IterablesChain> { |
| @Override |
| public Class<IterablesChain> getEncodedClass() { |
| return IterablesChain.class; |
| } |
| |
| @Override |
| public void serialize( |
| SerializationContext context, IterablesChain obj, CodedOutputStream codedOut) |
| throws SerializationException, IOException { |
| IterableCodecs.serialize(context, obj, codedOut); |
| } |
| |
| @Override |
| public IterablesChain deserialize(DeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| return new IterablesChain<>(IterableCodecs.deserialize(context, codedIn)); |
| } |
| } |
| |
| static class DedupingIterableCodec implements ObjectCodec<DedupingIterable> { |
| @Override |
| public Class<DedupingIterable> getEncodedClass() { |
| return DedupingIterable.class; |
| } |
| |
| @Override |
| public void serialize( |
| SerializationContext context, DedupingIterable obj, CodedOutputStream codedOut) |
| throws SerializationException, IOException { |
| IterableCodecs.serialize(context, obj, codedOut); |
| } |
| |
| @Override |
| public DedupingIterable deserialize(DeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| return new DedupingIterable<>(IterableCodecs.deserialize(context, codedIn)); |
| } |
| } |
| |
| private static void serialize( |
| SerializationContext context, Iterable obj, CodedOutputStream codedOut) |
| throws SerializationException, IOException { |
| for (Object elt : obj) { |
| context.serialize(elt, codedOut); |
| } |
| context.serialize(DONE, codedOut); |
| } |
| |
| private static ImmutableList<Object> deserialize( |
| DeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| ImmutableList.Builder<Object> builder = ImmutableList.builder(); |
| for (Object next = context.deserialize(codedIn); |
| next != DONE; |
| next = context.deserialize(codedIn)) { |
| builder.add(next); |
| } |
| return builder.build(); |
| } |
| |
| /** |
| * An object used to mark the end of the sequence of elements. |
| * |
| * <p>We use this instead of emitting a count to avoid possibly running deduplication twice. |
| */ |
| @AutoCodec @AutoCodec.VisibleForSerialization static final Object DONE = new Object(); |
| } |