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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.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();
}
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