| // Copyright 2014 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.objc; |
| |
| import com.google.common.collect.Iterables; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException; |
| import com.google.devtools.build.lib.analysis.ConfiguredTarget; |
| import com.google.devtools.build.lib.analysis.RuleConfiguredTargetFactory; |
| import com.google.devtools.build.lib.analysis.RuleContext; |
| import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget.Mode; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder; |
| import com.google.devtools.build.lib.rules.proto.ProtoInfo; |
| |
| /** |
| * Implementation for the "objc_proto_library" rule. |
| */ |
| public class ObjcProtoLibrary implements RuleConfiguredTargetFactory { |
| @Override |
| public ConfiguredTarget create(final RuleContext ruleContext) |
| throws InterruptedException, RuleErrorException, ActionConflictException { |
| new ProtoAttributes(ruleContext).validate(); |
| return createProtobufTarget(ruleContext); |
| } |
| |
| private ConfiguredTarget createProtobufTarget(RuleContext ruleContext) |
| throws InterruptedException, RuleErrorException, ActionConflictException { |
| NestedSetBuilder<Artifact> filesToBuild = NestedSetBuilder.stableOrder(); |
| |
| Iterable<ProtoInfo> protoInfos = |
| ruleContext.getPrerequisites("deps", Mode.TARGET, ProtoInfo.PROVIDER); |
| |
| Iterable<ObjcProtoProvider> objcProtoProviders = |
| ruleContext.getPrerequisites("deps", Mode.TARGET, ObjcProtoProvider.SKYLARK_CONSTRUCTOR); |
| |
| ProtobufSupport protoSupport = |
| new ProtobufSupport( |
| ruleContext, |
| ruleContext.getConfiguration(), |
| protoInfos, |
| objcProtoProviders, |
| getPortableProtoFilters(ruleContext, objcProtoProviders, protoInfos)) |
| .registerGenerationActions() |
| .addFilesToBuild(filesToBuild); |
| |
| return ObjcRuleClasses.ruleConfiguredTarget(ruleContext, filesToBuild.build()) |
| .addNativeDeclaredProvider(protoSupport.getObjcProvider().get()) |
| .build(); |
| } |
| |
| private static NestedSet<Artifact> getPortableProtoFilters( |
| RuleContext ruleContext, |
| Iterable<ObjcProtoProvider> objcProtoProviders, |
| Iterable<ProtoInfo> protoInfos) { |
| ProtoAttributes attributes = new ProtoAttributes(ruleContext); |
| NestedSetBuilder<Artifact> portableProtoFilters = NestedSetBuilder.stableOrder(); |
| |
| portableProtoFilters.addTransitive( |
| ProtobufSupport.getTransitivePortableProtoFilters(objcProtoProviders)); |
| |
| // If this target specifies filters, use those. If not, generate a filter only if there are |
| // direct proto_library targets, and generate a filter only for those files. |
| if (attributes.hasPortableProtoFilters()) { |
| portableProtoFilters.addAll(attributes.getPortableProtoFilters()); |
| } else if (!Iterables.isEmpty(protoInfos)) { |
| Artifact generatedFilter = ProtobufSupport.getGeneratedPortableFilter(ruleContext, |
| ruleContext.getConfiguration()); |
| ProtobufSupport.registerPortableFilterGenerationAction( |
| ruleContext, generatedFilter, protoInfos); |
| portableProtoFilters.add(generatedFilter); |
| } |
| |
| return portableProtoFilters.build(); |
| } |
| } |