| /* |
| * Copyright 2015-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.android; |
| |
| import com.facebook.buck.rules.BuildRule; |
| import com.google.common.base.Function; |
| import com.google.common.base.Predicates; |
| import com.google.common.collect.FluentIterable; |
| import com.google.common.collect.ImmutableSortedSet; |
| import com.google.common.collect.Iterables; |
| |
| import javax.annotation.Nullable; |
| |
| public class AndroidResourceHelper { |
| |
| private AndroidResourceHelper() {} |
| /** |
| * Filters out the set of {@code android_resource()} dependencies from {@code deps}. As a special |
| * case, if an {@code android_prebuilt_aar()} appears in the deps, the {@code android_resource()} |
| * that corresponds to the AAR will also be included in the output. |
| * <p> |
| * Note that if we allowed developers to depend on a flavored build target (in this case, the |
| * {@link AndroidPrebuiltAarGraphEnhancer#AAR_ANDROID_RESOURCE_FLAVOR} flavor), then we could |
| * require them to depend on the flavored dep explicitly in their build files. Then we could |
| * eliminate this special case, though it would be more burdensome for developers to have to |
| * keep track of when they could depend on an ordinary build rule vs. a flavored one. |
| */ |
| public static ImmutableSortedSet<BuildRule> androidResOnly(ImmutableSortedSet<BuildRule> deps) { |
| return FluentIterable |
| .from(deps) |
| .transform(new Function<BuildRule, BuildRule>() { |
| @Override |
| @Nullable |
| public BuildRule apply(BuildRule buildRule) { |
| if (buildRule instanceof AndroidResource) { |
| return buildRule; |
| } else if (buildRule instanceof AndroidLibrary && |
| ((AndroidLibrary) buildRule).isPrebuiltAar()) { |
| // An AndroidLibrary that is created via graph enhancement from an |
| // android_prebuilt_aar() should always have exactly one dependency that is an |
| // AndroidResource. |
| return Iterables.getOnlyElement( |
| FluentIterable.from(buildRule.getDeps()) |
| .filter(Predicates.instanceOf(AndroidResource.class)) |
| .toList()); |
| } |
| return null; |
| } |
| }) |
| .filter(Predicates.notNull()) |
| .toSortedSet(deps.comparator()); |
| } |
| } |