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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;
import com.google.common.base.Preconditions;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.packages.Target;
/**
* A container class for a {@link ConfiguredTarget} and {@link Target}. In the future, {@link
* ConfiguredTarget} objects will no longer contain their associated {@link Target}. Consumers that
* need the {@link Target} must therefore have access to one of these objects.
*
* <p>These objects are intended to be short-lived, never stored in Skyframe, since they pair two
* heavyweight objects, a {@link ConfiguredTarget} and a {@link Target}, which holds a {@link
* Package}.
*/
public class ConfiguredTargetAndTarget {
private final ConfiguredTarget configuredTarget;
private final Target target;
ConfiguredTargetAndTarget(ConfiguredTarget configuredTarget, Target target) {
this.configuredTarget = configuredTarget;
this.target = target;
Preconditions.checkState(
configuredTarget.getLabel().equals(target.getLabel()),
"Unable to construct ConfiguredTargetAndTarget:"
+ " ConfiguredTarget's label %s is not equal to Target's label %s",
configuredTarget.getLabel(),
target.getLabel());
}
/**
* For use with {@code MergedConfiguredTarget} and similar, where we create a virtual {@link
* ConfiguredTarget} corresponding to the same {@link Target}.
*/
public ConfiguredTargetAndTarget fromConfiguredTarget(ConfiguredTarget maybeNew) {
if (configuredTarget.equals(maybeNew)) {
return this;
}
return new ConfiguredTargetAndTarget(maybeNew, this.target);
}
public Target getTarget() {
return target;
}
public ConfiguredTarget getConfiguredTarget() {
return configuredTarget;
}
}
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