| // Copyright 2017 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.devtools.build.lib.cmdline.LabelSyntaxException; |
| import com.google.devtools.build.lib.cmdline.RepositoryName; |
| import com.google.devtools.build.lib.skyframe.serialization.strings.StringCodecs; |
| import com.google.protobuf.ByteString; |
| import com.google.protobuf.CodedInputStream; |
| import com.google.protobuf.CodedOutputStream; |
| import java.io.IOException; |
| |
| /** Common utilities for serialization. */ |
| public class SerializationCommonUtils { |
| public static final ImmutableListCodec<String> STRING_LIST_CODEC = |
| new ImmutableListCodec<>(StringCodecs.asciiOptimized()); |
| private static final ByteString DEFAULT_REPOSITORY = |
| ByteString.copyFromUtf8(RepositoryName.DEFAULT.getName()); |
| private static final ByteString MAIN_REPOSITORY = |
| ByteString.copyFromUtf8(RepositoryName.MAIN.getName()); |
| |
| public static RepositoryName deserializeRepoName(ByteString repoNameBytes) |
| throws LabelSyntaxException { |
| // We expect MAIN_REPOSITORY the vast majority of the time, so check for it first. |
| if (repoNameBytes.equals(MAIN_REPOSITORY)) { |
| return RepositoryName.MAIN; |
| } else if (repoNameBytes.equals(DEFAULT_REPOSITORY)) { |
| return RepositoryName.DEFAULT; |
| } else { |
| return RepositoryName.create(repoNameBytes.toStringUtf8()); |
| } |
| } |
| |
| public static <T> void serializeNullable(T obj, CodedOutputStream out, ObjectCodec<T> codec) |
| throws IOException, SerializationException { |
| if (obj == null) { |
| out.writeBoolNoTag(false); |
| } else { |
| out.writeBoolNoTag(true); |
| codec.serialize(obj, out); |
| } |
| } |
| |
| public static <T> T deserializeNullable(CodedInputStream in, ObjectCodec<T> codec) |
| throws IOException, SerializationException { |
| return in.readBool() ? codec.deserialize(in) : null; |
| } |
| } |