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// 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.common.collect.ImmutableList;
import com.google.common.collect.Maps;
import com.google.protobuf.CodedInputStream;
import com.google.protobuf.CodedOutputStream;
import java.io.IOException;
import java.util.AbstractMap;
import java.util.Map;
import java.util.function.BiFunction;
@SuppressWarnings("rawtypes")
class MapEntryCodec implements ObjectCodec<Map.Entry> {
private final BiFunction<Object, Object, Map.Entry> factory;
private final Class<? extends Map.Entry> type;
private MapEntryCodec(BiFunction<Object, Object, Map.Entry> factory) {
this.factory = factory;
this.type = factory.apply(0, 0).getClass();
}
@Override
public Class<? extends Map.Entry> getEncodedClass() {
return type;
}
@Override
public void serialize(SerializationContext context, Map.Entry entry, CodedOutputStream codedOut)
throws IOException, SerializationException {
context.serialize(entry.getKey(), codedOut);
context.serialize(entry.getValue(), codedOut);
}
@Override
public Map.Entry deserialize(DeserializationContext context, CodedInputStream codedIn)
throws SerializationException, IOException {
return factory.apply(context.deserialize(codedIn), context.deserialize(codedIn));
}
private static class MapEntryCodecRegisterer implements CodecRegisterer<MapEntryCodec> {
@Override
public Iterable<MapEntryCodec> getCodecsToRegister() {
return ImmutableList.of(
new MapEntryCodec(Maps::immutableEntry),
new MapEntryCodec(AbstractMap.SimpleEntry::new),
new MapEntryCodec(AbstractMap.SimpleImmutableEntry::new));
}
}
}
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