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 C# gRPC service interface out of Protobuf IDL.
20
21 #include <memory>
22
23 #include "src/compiler/config.h"
24 #include "src/compiler/csharp_generator.h"
25 #include "src/compiler/csharp_generator_helpers.h"
26
27 class CSharpGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
28 public:
CSharpGrpcGenerator()29 CSharpGrpcGenerator() {}
~CSharpGrpcGenerator()30 ~CSharpGrpcGenerator() {}
31
GetSupportedFeatures() const32 uint64_t GetSupportedFeatures() const override {
33 return FEATURE_PROTO3_OPTIONAL;
34 }
35
Generate(const grpc::protobuf::FileDescriptor * file,const std::string & parameter,grpc::protobuf::compiler::GeneratorContext * context,std::string * error) 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::vector<std::pair<std::string, std::string> > options;
41 grpc::protobuf::compiler::ParseGeneratorParameter(parameter, &options);
42
43 bool generate_client = true;
44 bool generate_server = true;
45 bool internal_access = false;
46 // the suffix that will get appended to the name generated from the name
47 // of the original .proto file
48 std::string file_suffix = "Grpc.cs";
49 for (size_t i = 0; i < options.size(); i++) {
50 if (options[i].first == "no_client") {
51 generate_client = false;
52 } else if (options[i].first == "no_server") {
53 generate_server = false;
54 } else if (options[i].first == "internal_access") {
55 internal_access = true;
56 } else if (options[i].first == "file_suffix") {
57 file_suffix = options[i].second;
58 } else {
59 *error = "Unknown generator option: " + options[i].first;
60 return false;
61 }
62 }
63
64 std::string code = grpc_csharp_generator::GetServices(
65 file, generate_client, generate_server, internal_access);
66 if (code.size() == 0) {
67 return true; // don't generate a file if there are no services
68 }
69
70 // Get output file name.
71 std::string file_name;
72 if (!grpc_csharp_generator::ServicesFilename(file, file_suffix,
73 file_name)) {
74 return false;
75 }
76 std::unique_ptr<grpc::protobuf::io::ZeroCopyOutputStream> output(
77 context->Open(file_name));
78 grpc::protobuf::io::CodedOutputStream coded_out(output.get());
79 coded_out.WriteRaw(code.data(), code.size());
80 return true;
81 }
82 };
83
main(int argc,char * argv[])84 int main(int argc, char* argv[]) {
85 CSharpGrpcGenerator generator;
86 return grpc::protobuf::compiler::PluginMain(argc, argv, &generator);
87 }
88