| // 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.proto; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoProvider; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.skylarkbuildapi.ProtoSourcesProviderApi; |
| |
| // TODO(carmi): Rename the class to ProtoInfoProvider. |
| /** |
| * Configured target classes that implement this class can contribute .proto files to the |
| * compilation of proto_library rules. |
| */ |
| @AutoValue |
| @Immutable |
| @AutoCodec |
| public abstract class ProtoSourcesProvider |
| implements TransitiveInfoProvider, ProtoSourcesProviderApi<Artifact> { |
| /** The name of the field in Skylark used to access this class. */ |
| public static final String SKYLARK_NAME = "proto"; |
| |
| @AutoCodec.Instantiator |
| public static ProtoSourcesProvider create( |
| NestedSet<Artifact> transitiveImports, |
| NestedSet<Artifact> transitiveProtoSources, |
| ImmutableList<Artifact> directProtoSources, |
| NestedSet<Artifact> checkDepsProtoSources, |
| Artifact directDescriptorSet, |
| NestedSet<Artifact> transitiveDescriptorSets, |
| NestedSet<String> transitiveProtoPathFlags, |
| String protoSourceRoot) { |
| return new AutoValue_ProtoSourcesProvider( |
| transitiveImports, |
| transitiveProtoSources, |
| directProtoSources, |
| checkDepsProtoSources, |
| directDescriptorSet, |
| transitiveDescriptorSets, |
| transitiveProtoPathFlags, |
| protoSourceRoot); |
| } |
| |
| /** |
| * Transitive imports including weak dependencies This determines the order of "-I" arguments to |
| * the protocol compiler, and that is probably important |
| */ |
| @Override |
| public abstract NestedSet<Artifact> getTransitiveImports(); |
| |
| /** Returns the proto sources for this rule and all its dependent protocol buffer rules. */ |
| @Override |
| // TODO(bazel-team): The difference between transitive imports and transitive proto sources |
| // should never be used by Skylark or by an Aspect. One of these two should be removed, |
| // preferably soon, before Skylark users start depending on them. |
| public abstract NestedSet<Artifact> getTransitiveProtoSources(); |
| |
| /** Returns the proto sources from the 'srcs' attribute. */ |
| @Override |
| public abstract ImmutableList<Artifact> getDirectProtoSources(); |
| |
| /** |
| * Returns the proto sources from the 'srcs' attribute. If the library is a proxy library that has |
| * no sources, return the sources from the direct deps. |
| * |
| * <p>This must be a set to avoid collecting the same source twice when depending on 2 proxy |
| * proto_library's that depend on the same proto_library. |
| */ |
| @Override |
| public abstract NestedSet<Artifact> getCheckDepsProtoSources(); |
| |
| /** |
| * Be careful while using this artifact - it is the parsing of the transitive set of .proto files. |
| * It's possible to cause a O(n^2) behavior, where n is the length of a proto chain-graph. |
| * (remember that proto-compiler reads all transitive .proto files, even when producing the |
| * direct-srcs descriptor set) |
| */ |
| @Override |
| public abstract Artifact directDescriptorSet(); |
| |
| /** |
| * Be careful while using this artifact - it is the parsing of the transitive set of .proto files. |
| * It's possible to cause a O(n^2) behavior, where n is the length of a proto chain-graph. |
| * (remember that proto-compiler reads all transitive .proto files, even when producing the |
| * direct-srcs descriptor set) |
| */ |
| @Override |
| public abstract NestedSet<Artifact> transitiveDescriptorSets(); |
| |
| /** |
| * Directories of .proto sources collected from the transitive closure. These flags will be passed |
| * to {@code protoc} in the specified order, via the {@code --proto_path} flag. |
| */ |
| @Override |
| public abstract NestedSet<String> getTransitiveProtoPathFlags(); |
| |
| /** The {@code proto_source_root} of the current library. */ |
| public abstract String getProtoSourceRoot(); |
| |
| ProtoSourcesProvider() {} |
| } |