blob: aa54cb952f5082c2d28d467a0f5802353bd70a1e [file] [log] [blame]
// Copyright 2014 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.actions;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.SerializationConstant;
import javax.annotation.Nullable;
/**
* An interface for {@code ActionLookupKey}, or at least for a {@link Label}. Only tests and
* internal {@link Artifact}-generators should implement this interface -- otherwise, {@code
* ActionLookupKey} and its subclasses should be the only implementation.
*/
public interface ArtifactOwner {
@Nullable
Label getLabel();
/**
* An {@link ArtifactOwner} that just returns null for its label. Only for use with resolved
* source artifacts and tests.
*/
@SerializationConstant
ArtifactOwner NULL_OWNER =
new ArtifactOwner() {
@Nullable
@Override
public Label getLabel() {
return null;
}
@Override
public String toString() {
return "NULL_OWNER";
}
};
}