com.google.devtools.build.lib.skyframe.serialization.ImmutableSortedSetCodec.java Source code

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Here is the source code for com.google.devtools.build.lib.skyframe.serialization.ImmutableSortedSetCodec.java

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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.ImmutableSortedSet;
import com.google.protobuf.CodedInputStream;
import com.google.protobuf.CodedOutputStream;
import java.io.IOException;

/**
 * {@link ObjectCodec} for {@link ImmutableSortedSet}. Comparator must be serializable, ideally a
 * registered constant.
 */
class ImmutableSortedSetCodec<E> implements ObjectCodec<ImmutableSortedSet<E>> {
    @SuppressWarnings("unchecked")
    @Override
    public Class<ImmutableSortedSet<E>> getEncodedClass() {
        return (Class<ImmutableSortedSet<E>>) (Class<?>) ImmutableSortedSet.class;
    }

    @Override
    public void serialize(SerializationContext context, ImmutableSortedSet<E> object, CodedOutputStream codedOut)
            throws SerializationException, IOException {
        context.serialize(object.comparator(), codedOut);
        codedOut.writeInt32NoTag(object.size());
        for (Object obj : object) {
            context.serialize(obj, codedOut);
        }
    }

    @Override
    public ImmutableSortedSet<E> deserialize(DeserializationContext context, CodedInputStream codedIn)
            throws SerializationException, IOException {
        ImmutableSortedSet.Builder<E> builder = ImmutableSortedSet.orderedBy(context.deserialize(codedIn));
        int size = codedIn.readInt32();
        for (int i = 0; i < size; i++) {
            builder.add(context.<E>deserialize(codedIn));
        }
        return builder.build();
    }
}