diff options
Diffstat (limited to 'helix-lsp/src/client.rs')
| -rw-r--r-- | helix-lsp/src/client.rs | 137 |
1 files changed, 127 insertions, 10 deletions
diff --git a/helix-lsp/src/client.rs b/helix-lsp/src/client.rs index 56413768..3c2c1ce0 100644 --- a/helix-lsp/src/client.rs +++ b/helix-lsp/src/client.rs @@ -1,11 +1,11 @@ use crate::{ transport::{Payload, Transport}, - Error, Notification, + Call, Error, }; type Result<T> = core::result::Result<T, Error>; -use helix_core::{State, Transaction}; +use helix_core::{ChangeSet, Transaction}; use helix_view::Document; // use std::collections::HashMap; @@ -27,7 +27,7 @@ pub struct Client { stderr: BufReader<ChildStderr>, outgoing: Sender<Payload>, - pub incoming: Receiver<Notification>, + pub incoming: Receiver<Call>, pub request_counter: u64, @@ -87,6 +87,7 @@ impl Client { Ok(params) } + /// Execute a RPC request on the language server. pub async fn request<R: lsp::request::Request>( &mut self, params: R::Params, @@ -126,6 +127,7 @@ impl Client { Ok(response) } + /// Send a RPC notification to the language server. pub async fn notify<R: lsp::notification::Notification>( &mut self, params: R::Params, @@ -149,6 +151,35 @@ impl Client { Ok(()) } + /// Reply to a language server RPC call. + pub async fn reply( + &mut self, + id: jsonrpc::Id, + result: core::result::Result<Value, jsonrpc::Error>, + ) -> Result<()> { + use jsonrpc::{Failure, Output, Success, Version}; + + let output = match result { + Ok(result) => Output::Success(Success { + jsonrpc: Some(Version::V2), + id, + result, + }), + Err(error) => Output::Failure(Failure { + jsonrpc: Some(Version::V2), + id, + error, + }), + }; + + self.outgoing + .send(Payload::Response(output)) + .await + .map_err(|e| Error::Other(e.into()))?; + + Ok(()) + } + // ------------------------------------------------------------------------------------------- // General messages // ------------------------------------------------------------------------------------------- @@ -163,7 +194,9 @@ impl Client { // root_uri: Some(lsp_types::Url::parse("file://localhost/")?), root_uri: None, // set to project root in the future initialization_options: None, - capabilities: lsp::ClientCapabilities::default(), + capabilities: lsp::ClientCapabilities { + ..Default::default() + }, trace: None, workspace_folders: None, client_info: None, @@ -203,23 +236,107 @@ impl Client { .await } + fn to_changes(changeset: &ChangeSet) -> Vec<lsp::TextDocumentContentChangeEvent> { + let mut iter = changeset.changes().iter().peekable(); + let mut old_pos = 0; + + let mut changes = Vec::new(); + + use crate::util::pos_to_lsp_pos; + use helix_core::Operation::*; + + // TEMP + let rope = helix_core::Rope::from(""); + let old_text = rope.slice(..); + + while let Some(change) = iter.next() { + let len = match change { + Delete(i) | Retain(i) => *i, + Insert(_) => 0, + }; + let old_end = old_pos + len; + + match change { + Retain(_) => {} + Delete(_) => { + let start = pos_to_lsp_pos(&old_text, old_pos); + let end = pos_to_lsp_pos(&old_text, old_end); + + // a subsequent ins means a replace, consume it + if let Some(Insert(s)) = iter.peek() { + iter.next(); + + // replacement + changes.push(lsp::TextDocumentContentChangeEvent { + range: Some(lsp::Range::new(start, end)), + text: s.into(), + range_length: None, + }); + } else { + // deletion + changes.push(lsp::TextDocumentContentChangeEvent { + range: Some(lsp::Range::new(start, end)), + text: "".to_string(), + range_length: None, + }); + }; + } + Insert(s) => { + let start = pos_to_lsp_pos(&old_text, old_pos); + + // insert + changes.push(lsp::TextDocumentContentChangeEvent { + range: Some(lsp::Range::new(start, start)), + text: s.into(), + range_length: None, + }); + } + } + old_pos = old_end; + } + + changes + } + // TODO: trigger any time history.commit_revision happens pub async fn text_document_did_change( &mut self, doc: &Document, transaction: &Transaction, ) -> Result<()> { + // figure out what kind of sync the server supports + + let capabilities = self.capabilities.as_ref().unwrap(); // TODO: needs post init + + let sync_capabilities = match capabilities.text_document_sync { + Some(lsp::TextDocumentSyncCapability::Kind(kind)) => kind, + Some(lsp::TextDocumentSyncCapability::Options(lsp::TextDocumentSyncOptions { + change: Some(kind), + .. + })) => kind, + // None | SyncOptions { changes: None } + _ => return Ok(()), + }; + + let changes = match sync_capabilities { + lsp::TextDocumentSyncKind::Full => { + vec![lsp::TextDocumentContentChangeEvent { + // range = None -> whole document + range: None, //Some(Range) + range_length: None, // u64 apparently deprecated + text: "".to_string(), + }] // TODO: probably need old_state here too? + } + lsp::TextDocumentSyncKind::Incremental => Self::to_changes(transaction.changes()), + lsp::TextDocumentSyncKind::None => return Ok(()), + }; + self.notify::<lsp::notification::DidChangeTextDocument>(lsp::DidChangeTextDocumentParams { text_document: lsp::VersionedTextDocumentIdentifier::new( lsp::Url::from_file_path(doc.path().unwrap()).unwrap(), doc.version, ), - content_changes: vec![lsp::TextDocumentContentChangeEvent { - // range = None -> whole document - range: None, //Some(Range) - range_length: None, // u64 apparently deprecated - text: "".to_string(), - }], // TODO: probably need old_state here too? + content_changes: changes, }) .await } |