blob: 33d9771285470ff309a4a91ba87a8f66ff040fb5 [file] [log] [blame]
// 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.Function;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.SerializationConstant;
import net.starlark.java.eval.EvalException;
import net.starlark.java.eval.Printer;
/** A natively-defined aspect that is may be referenced by Starlark attribute definitions. */
public abstract class StarlarkNativeAspect extends NativeAspectClass implements StarlarkAspect {
@SerializationConstant @AutoCodec.VisibleForSerialization
static final Function<Rule, AspectParameters> EMPTY_FUNCTION = input -> AspectParameters.EMPTY;
@Override
public void repr(Printer printer) {
printer.append("<native aspect>");
}
@Override
public void attachToAspectsList(String baseAspectName, AspectsListBuilder aspectsList)
throws EvalException {
aspectsList.addAspect(this, baseAspectName);
}
@Override
public AspectClass getAspectClass() {
return this;
}
@Override
public ImmutableSet<String> getParamAttributes() {
return ImmutableSet.of();
}
@Override
public Function<Rule, AspectParameters> getDefaultParametersExtractor() {
return EMPTY_FUNCTION;
}
}