| // Copyright 2016 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.cpp.proto; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget.Mode.TARGET; |
| |
| import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException; |
| import com.google.devtools.build.lib.analysis.ConfiguredTarget; |
| import com.google.devtools.build.lib.analysis.RuleConfiguredTargetBuilder; |
| import com.google.devtools.build.lib.analysis.RuleConfiguredTargetFactory; |
| import com.google.devtools.build.lib.analysis.RuleContext; |
| import com.google.devtools.build.lib.analysis.Runfiles; |
| import com.google.devtools.build.lib.analysis.RunfilesProvider; |
| import com.google.devtools.build.lib.rules.cpp.CcCommon; |
| import com.google.devtools.build.lib.rules.cpp.CcSkylarkApiProvider; |
| |
| /** Part of the implementation of cc_proto_library. */ |
| public class CcProtoLibrary implements RuleConfiguredTargetFactory { |
| @Override |
| public ConfiguredTarget create(RuleContext ruleContext) |
| throws InterruptedException, RuleErrorException, ActionConflictException { |
| CcCommon.checkRuleLoadedThroughMacro(ruleContext); |
| if (ruleContext.getPrerequisites("deps", TARGET).size() != 1) { |
| ruleContext.throwWithAttributeError( |
| "deps", |
| "'deps' attribute must contain exactly one label " |
| + "(we didn't name it 'dep' for consistency). " |
| + "The main use-case for multiple deps is to create a rule that contains several " |
| + "other targets. This makes dependency bloat more likely. It also makes it harder" |
| + "to remove unused deps."); |
| } |
| |
| CcProtoLibraryProviders depProviders = |
| checkNotNull(ruleContext.getPrerequisite("deps", TARGET)) |
| .getProvider(CcProtoLibraryProviders.class); |
| |
| RuleConfiguredTargetBuilder ruleConfiguredTargetBuilder = new RuleConfiguredTargetBuilder( |
| ruleContext) |
| .setFilesToBuild(depProviders.filesBuilder) |
| .addProvider( |
| RunfilesProvider.class, RunfilesProvider.withData(Runfiles.EMPTY, Runfiles.EMPTY)) |
| .addProviders(depProviders.providerMap); |
| |
| for (String groupName : depProviders.outputGroupInfo) { |
| ruleConfiguredTargetBuilder.addOutputGroup(groupName, |
| depProviders.outputGroupInfo.getOutputGroup(groupName)); |
| } |
| |
| CcSkylarkApiProvider.maybeAdd(ruleContext, ruleConfiguredTargetBuilder); |
| return ruleConfiguredTargetBuilder.build(); |
| } |
| } |