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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.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.EmptyRunfilesSupplier;
import com.google.devtools.build.lib.actions.RunfilesSupplier;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.collect.nestedset.Order;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import com.google.devtools.build.lib.skylarkbuildapi.FilesToRunProviderApi;
import javax.annotation.Nullable;
/** Returns information about executables produced by a target and the files needed to run it. */
@Immutable
@AutoCodec
public final class FilesToRunProvider
implements TransitiveInfoProvider, FilesToRunProviderApi<Artifact> {
/** The name of the field in Skylark used to access this class. */
public static final String SKYLARK_NAME = "files_to_run";
public static final FilesToRunProvider EMPTY =
new FilesToRunProvider(NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER), null, null);
private final NestedSet<Artifact> filesToRun;
@Nullable private final RunfilesSupport runfilesSupport;
@Nullable private final Artifact executable;
public FilesToRunProvider(
NestedSet<Artifact> filesToRun,
@Nullable RunfilesSupport runfilesSupport,
@Nullable Artifact executable) {
this.filesToRun = filesToRun;
this.runfilesSupport = runfilesSupport;
this.executable = executable;
}
/**
* Creates an instance that contains one single executable and no other files.
*/
public static FilesToRunProvider fromSingleExecutableArtifact(Artifact artifact) {
return new FilesToRunProvider(
NestedSetBuilder.create(Order.STABLE_ORDER, artifact), null, artifact);
}
/** Returns artifacts needed to run the executable for this target. */
public NestedSet<Artifact> getFilesToRun() {
return filesToRun;
}
/**
* Returns the {@RunfilesSupport} object associated with the target or null if it does not exist.
*/
@Nullable public RunfilesSupport getRunfilesSupport() {
return runfilesSupport;
}
/** Returns the Executable or null if it does not exist. */
@Override
@Nullable
public Artifact getExecutable() {
return executable;
}
/**
* Returns the RunfilesManifest or null if it does not exist. It is a shortcut to
* getRunfilesSupport().getRunfilesManifest().
*/
@Override
@Nullable
public Artifact getRunfilesManifest() {
return runfilesSupport != null ? runfilesSupport.getRunfilesManifest() : null;
}
/** Return a {@link RunfilesSupplier} encapsulating runfiles for this tool. */
public RunfilesSupplier getRunfilesSupplier() {
if (executable != null && runfilesSupport != null) {
return new RunfilesSupplierImpl(executable, runfilesSupport.getRunfiles());
} else {
return EmptyRunfilesSupplier.INSTANCE;
}
}
}
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