| /* |
| * Copyright 2014-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.DirectoryTraverser; |
| import com.facebook.buck.io.DirectoryTraversers; |
| import com.facebook.buck.model.BuildTarget; |
| import com.facebook.buck.util.HumanReadableException; |
| import com.google.common.base.Optional; |
| import com.google.common.collect.ImmutableSortedSet; |
| |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import java.util.Set; |
| |
| import javax.annotation.Nullable; |
| |
| public class BuildRules { |
| |
| private BuildRules() { |
| // Utility class. |
| } |
| |
| public static ImmutableSortedSet<BuildRule> toBuildRulesFor( |
| BuildTarget invokingBuildTarget, |
| BuildRuleResolver ruleResolver, |
| Iterable<BuildTarget> buildTargets, |
| boolean allowNonExistentRule) { |
| ImmutableSortedSet.Builder<BuildRule> buildRules = ImmutableSortedSet.naturalOrder(); |
| |
| for (BuildTarget target : buildTargets) { |
| Optional<BuildRule> buildRule = ruleResolver.getRuleOptional(target); |
| if (buildRule.isPresent()) { |
| buildRules.add(buildRule.get()); |
| } else if (!allowNonExistentRule) { |
| throw new HumanReadableException("No rule for %s found when processing %s", |
| target, invokingBuildTarget.getFullyQualifiedName()); |
| } |
| } |
| |
| return buildRules.build(); |
| } |
| |
| /** |
| * Helper function for {@link BuildRule}s to create their lists of files for caching. |
| */ |
| public static void addInputsToSortedSet( |
| @Nullable Path pathToDirectory, |
| ImmutableSortedSet.Builder<Path> inputsToConsiderForCachingPurposes, |
| DirectoryTraverser traverser) { |
| if (pathToDirectory == null) { |
| return; |
| } |
| |
| Set<Path> files; |
| try { |
| files = DirectoryTraversers.getInstance().findFiles(pathToDirectory.toString(), traverser); |
| } catch (IOException e) { |
| throw new RuntimeException("Exception while traversing " + pathToDirectory + ".", e); |
| } |
| |
| inputsToConsiderForCachingPurposes.addAll(files); |
| } |
| } |