// 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.java;
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;
/**
* A {@link TransitiveInfoProvider} that supplies runfiles for Java dependencies.
*/
@Immutable
public final class JavaRunfilesProvider implements TransitiveInfoProvider {
private final Runfiles runfiles;
public JavaRunfilesProvider(Runfiles runfiles) {
this.runfiles = runfiles;
}
public Runfiles getRunfiles() {
return runfiles;
}
/**
* Returns a function that gets the Java runfiles from a {@link TransitiveInfoCollection} or
* the empty runfiles instance if it does not contain that provider.
*/
public static final Function<TransitiveInfoCollection, Runfiles> TO_RUNFILES =
new Function<TransitiveInfoCollection, Runfiles>() {
@Override
public Runfiles apply(TransitiveInfoCollection input) {
JavaRunfilesProvider provider =
JavaProvider.getProvider(JavaRunfilesProvider.class, input);
return provider == null
? Runfiles.EMPTY
: provider.getRunfiles();
}
};
}