| // Copyright 2018 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.bazel.rules; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.devtools.build.lib.analysis.config.BuildOptions; |
| import com.google.devtools.build.lib.analysis.config.FragmentOptions; |
| import com.google.devtools.common.options.OptionsParsingException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Provides default {@link BuildOptions} based on the Fragment Classes provided. These default |
| * BuildOptions are used to create {@link BuildOptions.OptionsDiffForReconstruction} to store in |
| * {@link BuildConfigurationValue.Key}. |
| */ |
| public class DefaultBuildOptionsForDiffing { |
| |
| private static final ImmutableMap<Class<? extends FragmentOptions>, List<String>> |
| DEFAULT_OPTIONS_MAP = ImmutableMap.of(); |
| |
| public static BuildOptions getDefaultBuildOptionsForFragments( |
| List<Class<? extends FragmentOptions>> fragmentClasses) { |
| ArrayList<String> collector = new ArrayList<>(); |
| for (Class<? extends FragmentOptions> clazz : fragmentClasses) { |
| List<String> options = DEFAULT_OPTIONS_MAP.get(clazz); |
| if (options != null) { |
| collector.addAll(options); |
| } |
| } |
| try { |
| String[] stringCollector = new String[collector.size()]; |
| return BuildOptions.of(fragmentClasses, collector.toArray(stringCollector)); |
| } catch (OptionsParsingException e) { |
| throw new IllegalArgumentException("Failed to parse default options", e); |
| } |
| } |
| } |