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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.rules.cpp;
import com.google.common.base.Function;
import com.google.devtools.build.lib.analysis.Runfiles;
import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
/**
* Runfiles provider for C++ targets.
*
* <p>Contains two {@link Runfiles} objects: one for the eventual statically linked binary and
* one for the one that uses shared libraries. Data dependencies are present in both.
*/
@Immutable
public final class CppRunfilesProvider implements TransitiveInfoProvider {
private final Runfiles staticRunfiles;
private final Runfiles sharedRunfiles;
public CppRunfilesProvider(Runfiles staticRunfiles, Runfiles sharedRunfiles) {
this.staticRunfiles = staticRunfiles;
this.sharedRunfiles = sharedRunfiles;
}
public Runfiles getStaticRunfiles() {
return staticRunfiles;
}
public Runfiles getSharedRunfiles() {
return sharedRunfiles;
}
/**
* Returns a function that gets the static C++ runfiles from a {@link TransitiveInfoCollection}
* or the empty runfiles instance if it does not contain that provider.
*/
public static final Function<TransitiveInfoCollection, Runfiles> STATIC_RUNFILES =
new Function<TransitiveInfoCollection, Runfiles>() {
@Override
public Runfiles apply(TransitiveInfoCollection input) {
CppRunfilesProvider provider = input.getProvider(CppRunfilesProvider.class);
return provider == null
? Runfiles.EMPTY
: provider.getStaticRunfiles();
}
};
/**
* Returns a function that gets the shared C++ runfiles from a {@link TransitiveInfoCollection}
* or the empty runfiles instance if it does not contain that provider.
*/
public static final Function<TransitiveInfoCollection, Runfiles> SHARED_RUNFILES =
new Function<TransitiveInfoCollection, Runfiles>() {
@Override
public Runfiles apply(TransitiveInfoCollection input) {
CppRunfilesProvider provider = input.getProvider(CppRunfilesProvider.class);
return provider == null
? Runfiles.EMPTY
: provider.getSharedRunfiles();
}
};
/**
* Returns a function that gets the C++ runfiles from a {@link TransitiveInfoCollection} or
* the empty runfiles instance if it does not contain that provider.
*/
public static final Function<TransitiveInfoCollection, Runfiles> runfilesFunction(
boolean linkingStatically) {
return linkingStatically ? STATIC_RUNFILES : SHARED_RUNFILES;
}
}
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