| /* |
| * Copyright 2013-present Facebook, Inc. |
| * |
| * 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.facebook.buck.rules; |
| |
| import com.facebook.buck.io.ProjectFilesystem; |
| import com.facebook.buck.model.BuildTarget; |
| import com.google.common.base.Function; |
| import com.google.common.collect.FluentIterable; |
| import com.google.common.collect.ImmutableSortedSet; |
| import com.google.common.collect.Ordering; |
| |
| import java.nio.file.Path; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * Utilities for dealing with {@link SourcePath}s. |
| */ |
| public class SourcePaths { |
| |
| public static final Function<BuildTargetSourcePath, BuildTarget> TO_BUILD_TARGET = |
| new Function<BuildTargetSourcePath, BuildTarget>() { |
| @Override |
| public BuildTarget apply(BuildTargetSourcePath input) { |
| return input.getTarget(); |
| } |
| }; |
| |
| /** Utility class: do not instantiate. */ |
| private SourcePaths() {} |
| |
| public static ImmutableSortedSet<SourcePath> toSourcePathsSortedByNaturalOrder( |
| ProjectFilesystem projectFilesystem, |
| @Nullable Iterable<Path> paths) { |
| if (paths == null) { |
| return ImmutableSortedSet.of(); |
| } |
| |
| return FluentIterable.from(paths) |
| .transform(toSourcePath(projectFilesystem)) |
| .toSortedSet(Ordering.natural()); |
| } |
| |
| public static Iterable<BuildTarget> filterBuildTargetSourcePaths( |
| Iterable<SourcePath> sourcePaths) { |
| return FluentIterable |
| .from(sourcePaths) |
| .filter(BuildTargetSourcePath.class) |
| .transform(TO_BUILD_TARGET); |
| } |
| |
| public static Function<Path, SourcePath> toSourcePath(final ProjectFilesystem projectFilesystem) { |
| return new Function<Path, SourcePath>() { |
| @Override |
| public SourcePath apply(Path input) { |
| return new PathSourcePath(projectFilesystem, input); |
| } |
| }; |
| } |
| |
| public static Function<BuildRule, SourcePath> getToBuildTargetSourcePath( |
| final ProjectFilesystem projectFilesystem) { |
| return new Function<BuildRule, SourcePath>() { |
| @Override |
| public SourcePath apply(BuildRule input) { |
| return new BuildTargetSourcePath(projectFilesystem, input.getBuildTarget()); |
| } |
| }; |
| } |
| } |