1 /*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 // Generates Ruby gRPC service interface out of Protobuf IDL.
20
21 #include <memory>
22
23 #include "src/compiler/config.h"
24 #include "src/compiler/ruby_generator.h"
25 #include "src/compiler/ruby_generator_helpers-inl.h"
26
27 class RubyGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
28 public:
RubyGrpcGenerator()29 RubyGrpcGenerator() {}
~RubyGrpcGenerator()30 ~RubyGrpcGenerator() {}
31
GetSupportedFeatures() const32 uint64_t GetSupportedFeatures() const override {
33 return FEATURE_PROTO3_OPTIONAL;
34 }
35
Generate(const grpc::protobuf::FileDescriptor * file,const std::string &,grpc::protobuf::compiler::GeneratorContext * context,std::string *) const36 bool Generate(const grpc::protobuf::FileDescriptor* file,
37 const std::string& /*parameter*/,
38 grpc::protobuf::compiler::GeneratorContext* context,
39 std::string* /*error*/) const override {
40 std::string code = grpc_ruby_generator::GetServices(file);
41 if (code.size() == 0) {
42 return true; // don't generate a file if there are no services
43 }
44
45 // Get output file name.
46 std::string file_name;
47 if (!grpc_ruby_generator::ServicesFilename(file, &file_name)) {
48 return false;
49 }
50 std::unique_ptr<grpc::protobuf::io::ZeroCopyOutputStream> output(
51 context->Open(file_name));
52 grpc::protobuf::io::CodedOutputStream coded_out(output.get());
53 coded_out.WriteRaw(code.data(), code.size());
54 return true;
55 }
56 };
57
main(int argc,char * argv[])58 int main(int argc, char* argv[]) {
59 RubyGrpcGenerator generator;
60 return grpc::protobuf::compiler::PluginMain(argc, argv, &generator);
61 }
62