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
plugin_main<F>(gen: F) where F: Fn(&[FileDescriptorProto], &[String]) -> Vec<GenResult>,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
plugin_main_2<F>(gen: F) where F: Fn(&GenRequest) -> Vec<GenResult>,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 }
54