// 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.serialization; import com.google.protobuf.CodedInputStream; import com.google.protobuf.CodedOutputStream; import java.util.Collections; import java.util.List; /** * Codec for {@link Collections.EMPTY_LIST} * *
TODO(shahan): this might be better as an AutoCodec field tag, but this package, the logical
* home for the codec, is a dependency of AutoCodec, so doing so would create a circular dependency.
*/
@SuppressWarnings("rawtypes")
class EmptyListCodec implements ObjectCodec {
@Override
public Class extends List> getEncodedClass() {
return Collections.emptyList().getClass();
}
@Override
public void serialize(
SerializationContext unusedContext, List unusedValue, CodedOutputStream unusedCodedOut) {}
@Override
public List deserialize(DeserializationContext unusedContext, CodedInputStream unusedCodedIn) {
return Collections.emptyList();
}
}