// Copyright 2016 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.proto;

import com.google.common.base.Function;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;

import javax.annotation.Nullable;

/** Used by java_{lite,...}_proto_library to roll up jars to build. */
public class JavaProtoLibraryTransitiveFilesToBuildProvider implements TransitiveInfoProvider {
  private final NestedSet<Artifact> jars;

  /** A long way to say (JavaProtoLibraryTransitiveFilesToBuildProvider p) -> p.getJars() */
  public static final Function<JavaProtoLibraryTransitiveFilesToBuildProvider, NestedSet<Artifact>>
      GET_JARS =
          new Function<JavaProtoLibraryTransitiveFilesToBuildProvider, NestedSet<Artifact>>() {
            @Nullable
            @Override
            public NestedSet<Artifact> apply(
                @Nullable JavaProtoLibraryTransitiveFilesToBuildProvider p) {
              return p == null ? null : p.getJars();
            }
          };

  public JavaProtoLibraryTransitiveFilesToBuildProvider(NestedSet<Artifact> jars) {
    this.jars = jars;
  }

  public NestedSet<Artifact> getJars() {
    return jars;
  }
}
