87 lines
2.6 KiB
Rust
87 lines
2.6 KiB
Rust
#[macro_use]
|
|
extern crate failure;
|
|
#[macro_use]
|
|
extern crate log;
|
|
extern crate serde;
|
|
extern crate serde_json;
|
|
#[macro_use]
|
|
extern crate serde_derive;
|
|
extern crate crossbeam_channel;
|
|
extern crate languageserver_types;
|
|
|
|
mod msg;
|
|
mod stdio;
|
|
|
|
use crossbeam_channel::{Sender, Receiver};
|
|
use languageserver_types::{
|
|
ServerCapabilities, InitializeResult,
|
|
request::{Initialize, Shutdown},
|
|
notification::{Initialized, Exit},
|
|
};
|
|
|
|
pub type Result<T> = ::std::result::Result<T, failure::Error>;
|
|
pub use {
|
|
msg::{RawMessage, RawRequest, RawResponse, RawResponseError, RawNotification, ErrorCode},
|
|
stdio::{stdio_transport, Threads},
|
|
};
|
|
|
|
pub fn run_server(
|
|
caps: ServerCapabilities,
|
|
server: impl FnOnce(&mut Receiver<RawMessage>, &mut Sender<RawMessage>) -> Result<()>,
|
|
mut receiver: Receiver<RawMessage>,
|
|
mut sender: Sender<RawMessage>,
|
|
) -> Result<()> {
|
|
info!("lsp server initializes");
|
|
initialize(&mut receiver, &mut sender, caps)?;
|
|
info!("lsp server initialized, serving requests");
|
|
server(&mut receiver, &mut sender)?;
|
|
info!("lsp server waiting for exit notification");
|
|
match receiver.recv() {
|
|
Some(RawMessage::Notification(n)) => {
|
|
n.cast::<Exit>().map_err(|n| format_err!(
|
|
"unexpected notification during shutdown: {:?}", n
|
|
))?
|
|
}
|
|
m => bail!("unexpected message during shutdown: {:?}", m)
|
|
}
|
|
info!("lsp server shutdown complete");
|
|
Ok(())
|
|
}
|
|
|
|
pub fn handle_shutdown(req: RawRequest, sender: &Sender<RawMessage>) -> Option<RawRequest> {
|
|
match req.cast::<Shutdown>() {
|
|
Ok((id, ())) => {
|
|
let resp = RawResponse::ok::<Shutdown>(id, &());
|
|
sender.send(RawMessage::Response(resp));
|
|
None
|
|
}
|
|
Err(req) => Some(req),
|
|
}
|
|
}
|
|
|
|
fn initialize(
|
|
receiver: &mut Receiver<RawMessage>,
|
|
sender: &mut Sender<RawMessage>,
|
|
caps: ServerCapabilities,
|
|
) -> Result<()> {
|
|
let id = match receiver.recv() {
|
|
Some(RawMessage::Request(req)) => match req.cast::<Initialize>() {
|
|
Err(req) => bail!("expected initialize request, got {:?}", req),
|
|
Ok(req) => req.0,
|
|
}
|
|
msg =>
|
|
bail!("expected initialize request, got {:?}", msg),
|
|
};
|
|
let resp = RawResponse::ok::<Initialize>(id, &InitializeResult { capabilities: caps });
|
|
sender.send(RawMessage::Response(resp));
|
|
match receiver.recv() {
|
|
Some(RawMessage::Notification(n)) => {
|
|
n.cast::<Initialized>().map_err(|_| format_err!(
|
|
"expected initialized notification"
|
|
))?;
|
|
}
|
|
_ => bail!("expected initialized notification"),
|
|
}
|
|
Ok(())
|
|
}
|