Chih-Hung Hsieh | cfc3a23 | 2020-06-10 20:13:05 -0700 | [diff] [blame^] | 1 | // TODO: move into separate crate |
| 2 | #![doc(hidden)] |
| 3 | |
| 4 | use plugin::*; |
| 5 | use protobuf::descriptor::FileDescriptorProto; |
| 6 | use protobuf::parse_from_reader; |
| 7 | use protobuf::Message; |
| 8 | use std::io::stdin; |
| 9 | use std::io::stdout; |
| 10 | use std::str; |
| 11 | |
| 12 | pub struct GenRequest<'a> { |
| 13 | pub file_descriptors: &'a [FileDescriptorProto], |
| 14 | pub files_to_generate: &'a [String], |
| 15 | pub parameter: &'a str, |
| 16 | } |
| 17 | |
| 18 | pub struct GenResult { |
| 19 | pub name: String, |
| 20 | pub content: Vec<u8>, |
| 21 | } |
| 22 | |
| 23 | pub fn plugin_main<F>(gen: F) |
| 24 | where |
| 25 | F: Fn(&[FileDescriptorProto], &[String]) -> Vec<GenResult>, |
| 26 | { |
| 27 | plugin_main_2(|r| gen(r.file_descriptors, r.files_to_generate)) |
| 28 | } |
| 29 | |
| 30 | pub fn plugin_main_2<F>(gen: F) |
| 31 | where |
| 32 | F: Fn(&GenRequest) -> Vec<GenResult>, |
| 33 | { |
| 34 | let req = parse_from_reader::<CodeGeneratorRequest>(&mut stdin()).unwrap(); |
| 35 | let result = gen(&GenRequest { |
| 36 | file_descriptors: &req.get_proto_file(), |
| 37 | files_to_generate: &req.get_file_to_generate(), |
| 38 | parameter: req.get_parameter(), |
| 39 | }); |
| 40 | let mut resp = CodeGeneratorResponse::new(); |
| 41 | resp.set_file( |
| 42 | result |
| 43 | .iter() |
| 44 | .map(|file| { |
| 45 | let mut r = CodeGeneratorResponse_File::new(); |
| 46 | r.set_name(file.name.to_string()); |
| 47 | r.set_content(str::from_utf8(file.content.as_ref()).unwrap().to_string()); |
| 48 | r |
| 49 | }) |
| 50 | .collect(), |
| 51 | ); |
| 52 | resp.write_to_writer(&mut stdout()).unwrap(); |
| 53 | } |