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// 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.analysis;
import com.google.common.collect.ImmutableCollection;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.skylarkinterface.SkylarkValue;
import com.google.devtools.build.lib.syntax.ClassObject;
import com.google.devtools.build.lib.syntax.EvalException;
import javax.annotation.Nullable;
/**
* A {@link ConfiguredTarget} is conceptually a {@link TransitiveInfoCollection} coupled
* with the {@link Target} and {@link BuildConfiguration} objects it was created from.
*
* <p>This interface is supposed to only be used in {@link BuildView} and above. In particular,
* rule implementations should not be able to access the {@link ConfiguredTarget} objects
* associated with their direct dependencies, only the corresponding
* {@link TransitiveInfoCollection}s. Also, {@link ConfiguredTarget} objects should not be
* accessible from the action graph.
*/
public interface ConfiguredTarget extends TransitiveInfoCollection, ClassObject, SkylarkValue {
/**
* All <code>ConfiguredTarget</code>s have a "label" field.
*/
String LABEL_FIELD = "label";
/**
* All <code>ConfiguredTarget</code>s have a "files" field.
*/
String FILES_FIELD = "files";
default String getConfigurationChecksum() {
return getConfigurationKey() == null
? null
: getConfigurationKey().getOptionsDiff().getChecksum();
}
/**
* Returns keys for a legacy Skylark provider.
*
* Overrides {@link ClassObject#getFieldNames()}, but does not allow {@link EvalException} to
* be thrown.
*/
@Override
ImmutableCollection<String> getFieldNames();
/**
* Returns a legacy Skylark provider.
*
* Overrides {@link ClassObject#getValue(String)}, but does not allow EvalException to
* be thrown.
*/
@Nullable
@Override
Object getValue(String name);
}
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