text: /*
   *
   * Copyright 2015 gRPC authors.
   *
   * 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.
   *
   */
  
  // Generates C# gRPC service interface out of Protobuf IDL.
  
  #include <memory>
  
  #include "src/compiler/config.h"
  #include "src/compiler/csharp_generator.h"
  #include "src/compiler/csharp_generator_helpers.h"
  
  class CSharpGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
   public:
    CSharpGrpcGenerator() {}
    ~CSharpGrpcGenerator() {}
  
    uint64_t GetSupportedFeatures() const override {
      return FEATURE_PROTO3_OPTIONAL;
    }
  
    bool Generate(const grpc::protobuf::FileDescriptor* file,
                  const grpc::string& parameter,
                  grpc::protobuf::compiler::GeneratorContext* context,
                  grpc::string* error) const override {
      std::vector<std::pair<grpc::string, grpc::string> > options;
      grpc::protobuf::compiler::ParseGeneratorParameter(parameter, &options);
  
      bool generate_client = true;
      bool generate_server = true;
      bool internal_access = false;
      for (size_t i = 0; i < options.size(); i++) {
        if (options[i].first == "no_client") {
          generate_client = false;
        } else if (options[i].first == "no_server") {
          generate_server = false;
        } else if (options[i].first == "internal_access") {
          internal_access = true;
        } else {
          *error = "Unknown generator option: " + options[i].first;
          return false;
        }
      }
  
      grpc::string code = grpc_csharp_generator::GetServices(
          file, generate_client, generate_server, internal_access);
      if (code.size() == 0) {
        return true;  // don't generate a file if there are no services
      }
  
      // Get output file name.
      grpc::string file_name;
      if (!grpc_csharp_generator::ServicesFilename(file, &file_name)) {
        return false;
      }
      std::unique_ptr<grpc::protobuf::io::ZeroCopyOutputStream> output(
          context->Open(file_name));
      grpc::protobuf::io::CodedOutputStream coded_out(output.get());
      coded_out.WriteRaw(code.data(), code.size());
      return true;
    }
  };
  
  int main(int argc, char* argv[]) {
    CSharpGrpcGenerator generator;
    return grpc::protobuf::compiler::PluginMain(argc, argv, &generator);
  }
  