| // Copyright 2017 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.android; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder; |
| import com.google.devtools.build.lib.packages.RuleClass.ConfiguredTargetFactory.RuleErrorException; |
| import com.google.devtools.build.lib.packages.RuleErrorConsumer; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.function.Consumer; |
| import java.util.stream.Collectors; |
| |
| /** Filters containers of android resources. */ |
| public class ResourceFilter { |
| private final ImmutableSet<Artifact> acceptedResources; |
| private final Consumer<Artifact> filteredDependencyConsumer; |
| private final boolean isEmpty; |
| |
| static final ResourceFilter empty() { |
| return new ResourceFilter(ImmutableSet.of(), (artifact -> {}), /* isEmpty= */ true); |
| } |
| |
| static final ResourceFilter of( |
| ImmutableSet<Artifact> acceptedResources, Consumer<Artifact> filteredDependencyConsumer) { |
| return new ResourceFilter(acceptedResources, filteredDependencyConsumer, /* isEmpty= */ false); |
| } |
| |
| private ResourceFilter( |
| ImmutableSet<Artifact> acceptedResources, |
| Consumer<Artifact> filteredDependencyConsumer, |
| boolean isEmpty) { |
| this.acceptedResources = acceptedResources; |
| this.filteredDependencyConsumer = filteredDependencyConsumer; |
| this.isEmpty = isEmpty; |
| } |
| |
| public Optional<NestedSet<Artifact>> maybeFilterDependencies(NestedSet<Artifact> artifacts) { |
| if (isEmpty) { |
| return Optional.empty(); |
| } |
| |
| List<Artifact> asList = artifacts.toList(); |
| List<Artifact> filtered = |
| asList.stream().filter(acceptedResources::contains).collect(Collectors.toList()); |
| if (filtered.size() == asList.size()) { |
| // No filtering needs to be done |
| return Optional.empty(); |
| } |
| |
| return Optional.of(NestedSetBuilder.wrap(artifacts.getOrder(), filtered)); |
| } |
| |
| public NestedSet<ValidatedAndroidResources> filterDependencyContainers( |
| RuleErrorConsumer errorConsumer, NestedSet<ValidatedAndroidResources> resourceContainers) |
| throws RuleErrorException { |
| if (isEmpty) { |
| return resourceContainers; |
| } |
| |
| NestedSetBuilder<ValidatedAndroidResources> builder = |
| new NestedSetBuilder<>(resourceContainers.getOrder()); |
| |
| for (ValidatedAndroidResources container : resourceContainers.toList()) { |
| builder.add(container.filter(errorConsumer, this, /* isDependency = */ true)); |
| } |
| |
| return builder.build(); |
| } |
| |
| Optional<ImmutableList<Artifact>> maybeFilter( |
| ImmutableList<Artifact> artifacts, boolean isDependency) { |
| if (isEmpty) { |
| return Optional.empty(); |
| } |
| |
| boolean removedAny = false; |
| ImmutableList.Builder<Artifact> filtered = ImmutableList.builder(); |
| |
| for (Artifact artifact : artifacts) { |
| if (acceptedResources.contains(artifact)) { |
| filtered.add(artifact); |
| } else { |
| removedAny = true; |
| if (isDependency) { |
| filteredDependencyConsumer.accept(artifact); |
| } |
| } |
| } |
| |
| if (!removedAny) { |
| // No filtering was done, return the original |
| return Optional.empty(); |
| } |
| |
| return Optional.of(filtered.build()); |
| } |
| } |