54 lines
1.6 KiB
Rust
54 lines
1.6 KiB
Rust
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use ra_proc_macro::msg::{self, Message};
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use ra_proc_macro_srv::{expand_task, list_macros};
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use std::io;
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fn read_request() -> Result<Option<msg::Request>, io::Error> {
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let stdin = io::stdin();
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let mut stdin = stdin.lock();
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msg::Request::read(&mut stdin)
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}
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fn write_response(res: Result<msg::Response, String>) -> Result<(), io::Error> {
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let msg: msg::Response = match res {
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Ok(res) => res,
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Err(err) => msg::Response::Error(msg::ResponseError {
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code: msg::ErrorCode::ExpansionError,
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message: err,
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}),
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};
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let stdout = io::stdout();
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let mut stdout = stdout.lock();
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msg.write(&mut stdout)
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}
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fn main() {
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loop {
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let req = match read_request() {
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Err(err) => {
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eprintln!("Read message error on ra_proc_macro_srv: {}", err.to_string());
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continue;
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}
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Ok(None) => continue,
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Ok(Some(req)) => req,
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};
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match req {
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msg::Request::ListMacro(task) => {
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if let Err(err) =
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write_response(list_macros(&task).map(|it| msg::Response::ListMacro(it)))
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{
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eprintln!("Write message error on list macro: {}", err);
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}
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}
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msg::Request::ExpansionMacro(task) => {
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if let Err(err) =
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write_response(expand_task(&task).map(|it| msg::Response::ExpansionMacro(it)))
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{
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eprintln!("Write message error on expansion macro: {}", err);
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}
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}
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}
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}
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}
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