lsp_server/
req_queue.rs

1use std::collections::HashMap;
2
3use crate::{ErrorCode, Request, RequestId, Response, ResponseError};
4
5/// Manages the set of pending requests, both incoming and outgoing.
6#[derive(Debug)]
7pub struct ReqQueue<I, O> {
8    pub incoming: Incoming<I>,
9    pub outgoing: Outgoing<O>,
10}
11
12impl<I, O> Default for ReqQueue<I, O> {
13    fn default() -> ReqQueue<I, O> {
14        ReqQueue {
15            incoming: Incoming { pending: HashMap::default() },
16            outgoing: Outgoing { next_id: 0, pending: HashMap::default() },
17        }
18    }
19}
20
21#[derive(Debug)]
22pub struct Incoming<I> {
23    pending: HashMap<RequestId, I>,
24}
25
26#[derive(Debug)]
27pub struct Outgoing<O> {
28    next_id: i32,
29    pending: HashMap<RequestId, O>,
30}
31
32impl<I> Incoming<I> {
33    pub fn register(&mut self, id: RequestId, data: I) {
34        self.pending.insert(id, data);
35    }
36
37    pub fn cancel(&mut self, id: RequestId) -> Option<Response> {
38        let _data = self.complete(&id)?;
39        let error = ResponseError {
40            code: ErrorCode::RequestCanceled as i32,
41            message: "canceled by client".to_owned(),
42            data: None,
43        };
44        Some(Response { id, result: None, error: Some(error) })
45    }
46
47    pub fn complete(&mut self, id: &RequestId) -> Option<I> {
48        self.pending.remove(id)
49    }
50
51    pub fn is_completed(&self, id: &RequestId) -> bool {
52        !self.pending.contains_key(id)
53    }
54}
55
56impl<O> Outgoing<O> {
57    pub fn register<P: serde::Serialize>(&mut self, method: String, params: P, data: O) -> Request {
58        let id = RequestId::from(self.next_id);
59        self.pending.insert(id.clone(), data);
60        self.next_id += 1;
61        Request::new(id, method, params)
62    }
63
64    pub fn complete(&mut self, id: RequestId) -> Option<O> {
65        self.pending.remove(&id)
66    }
67}
lsp_server/req_queue.rs

lsp_server/
req_queue.rs
