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 #ifdef GRPC_PROTOBUF_EDITION_SUPPORT
35 | FEATURE_SUPPORTS_EDITIONS
36 #endif
37 ;
38 }
39
40 #ifdef GRPC_PROTOBUF_EDITION_SUPPORT
GetMinimumEdition() const41 grpc::protobuf::Edition GetMinimumEdition() const override {
42 return grpc::protobuf::Edition::EDITION_PROTO2;
43 }
GetMaximumEdition() const44 grpc::protobuf::Edition GetMaximumEdition() const override {
45 return grpc::protobuf::Edition::EDITION_2023;
46 }
47 #endif
48
Generate(const grpc::protobuf::FileDescriptor * file,const std::string &,grpc::protobuf::compiler::GeneratorContext * context,std::string *) const49 bool Generate(const grpc::protobuf::FileDescriptor* file,
50 const std::string& /*parameter*/,
51 grpc::protobuf::compiler::GeneratorContext* context,
52 std::string* /*error*/) const override {
53 std::string code = grpc_ruby_generator::GetServices(file);
54 if (code.size() == 0) {
55 return true; // don't generate a file if there are no services
56 }
57
58 // Get output file name.
59 std::string file_name;
60 if (!grpc_ruby_generator::ServicesFilename(file, &file_name)) {
61 return false;
62 }
63 std::unique_ptr<grpc::protobuf::io::ZeroCopyOutputStream> output(
64 context->Open(file_name));
65 grpc::protobuf::io::CodedOutputStream coded_out(output.get());
66 coded_out.WriteRaw(code.data(), code.size());
67 return true;
68 }
69 };
70
main(int argc,char * argv[])71 int main(int argc, char* argv[]) {
72 RubyGrpcGenerator generator;
73 return grpc::protobuf::compiler::PluginMain(argc, argv, &generator);
74 }
75