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// Copyright 2015 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.packages;
import com.google.common.base.Preconditions;
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.strings.StringCodecs;
import com.google.protobuf.CodedInputStream;
import com.google.protobuf.CodedOutputStream;
import java.io.IOException;
/**
* A class of aspects that are implemented natively in Bazel.
*
* <p>This class just wraps a {@link java.lang.Class} implementing the
* aspect factory. All wrappers of the same class are equal.
*/
public abstract class NativeAspectClass implements AspectClass {
public static final ObjectCodec<NativeAspectClass> CODEC = new Codec();
@Override
public String getName() {
return getClass().getSimpleName();
}
public abstract AspectDefinition getDefinition(AspectParameters aspectParameters);
private static class Codec implements ObjectCodec<NativeAspectClass> {
@Override
public Class<NativeAspectClass> getEncodedClass() {
return NativeAspectClass.class;
}
@Override
public void serialize(
SerializationContext context, NativeAspectClass obj, CodedOutputStream codedOut)
throws SerializationException, IOException {
RuleClassProvider ruleClassProvider =
Preconditions.checkNotNull(context.getDependency(RuleClassProvider.class), obj);
NativeAspectClass storedAspect = ruleClassProvider.getNativeAspectClass(obj.getKey());
Preconditions.checkState(
obj == storedAspect, "Not stored right: %s %s %s", obj, storedAspect, ruleClassProvider);
StringCodecs.asciiOptimized().serialize(context, obj.getKey(), codedOut);
}
@Override
public NativeAspectClass deserialize(DeserializationContext context, CodedInputStream codedIn)
throws SerializationException, IOException {
String aspectKey = StringCodecs.asciiOptimized().deserialize(context, codedIn);
return Preconditions.checkNotNull(
Preconditions.checkNotNull(context.getDependency(RuleClassProvider.class), aspectKey)
.getNativeAspectClass(aspectKey),
aspectKey);
}
}
}
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