diff options
Diffstat (limited to 'helix-lsp')
| -rw-r--r-- | helix-lsp/Cargo.toml | 2 | ||||
| -rw-r--r-- | helix-lsp/log | 45 | ||||
| -rw-r--r-- | helix-lsp/src/lib.rs | 243 | ||||
| -rw-r--r-- | helix-lsp/src/transport.rs | 189 |
4 files changed, 301 insertions, 178 deletions
diff --git a/helix-lsp/Cargo.toml b/helix-lsp/Cargo.toml index 1942fc24..b34c139f 100644 --- a/helix-lsp/Cargo.toml +++ b/helix-lsp/Cargo.toml @@ -7,6 +7,8 @@ edition = "2018" # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html [dependencies] +helix-core = { path = "../helix-core" } + lsp-types = { version = "0.82", features = ["proposed"] } smol = "1.2" url = "2" diff --git a/helix-lsp/log b/helix-lsp/log new file mode 100644 index 00000000..d8370f16 --- /dev/null +++ b/helix-lsp/log @@ -0,0 +1,45 @@ +Sun Oct 18 21:15:33 2020:["lsp#register_server", "server registered", "typescript-language-server"] +Sun Oct 18 21:15:33 2020:["lsp#register_server", "server registered", "elixir-ls"] +Sun Oct 18 21:15:33 2020:["lsp#register_server", "server registered", "vue-language-server"] +Sun Oct 18 21:15:33 2020:["lsp#register_server", "server registered", "rust-analyzer"] +Sun Oct 18 21:15:33 2020:["s:on_text_document_did_open()", 1, "", "/Users/speed/src/helix/helix-lsp", ""] +Sun Oct 18 21:15:34 2020:["s:on_text_document_did_close()", 1] +Sun Oct 18 21:15:34 2020:["s:on_text_document_did_open()", 1, "rust", "/Users/speed/src/helix", "file:///Users/speed/src/helix/helix-lsp/src/lib.rs"] +Sun Oct 18 21:15:34 2020:["Starting server", "rust-analyzer", ["rust-analyzer"]] +Sun Oct 18 21:15:34 2020:[{"response": {"data": {"__data__": "vim-lsp", "lsp_id": 7, "server_name": "rust-analyzer"}, "message": "started lsp server successfully"}}] +Sun Oct 18 21:15:34 2020:["--->", 7, "rust-analyzer", {"method": "initialize", "params": {"rootUri": "file:///Users/speed/src/helix/helix-lsp", "capabilities": {"workspace": {"configuration": true, "applyEdit": true}, "textDocument": {"implementation": {"linkSupport": true}, "documentSymbol": {"symbolKind": {"valueSet": [10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 1, 2, 3, 4, 5, 6, 7, 8, 9]}, "hierarchicalDocumentSymbolSupport": false}, "semanticHighlightingCapabilities": {"semanticHighlighting": false}, "codeAction": {"codeActionLiteralSupport": {"codeActionKind": {"valueSet": ["", "quickfix", "refactor", "refactor.extract", "refactor.inline", "refactor.rewrite", "source", "source.organizeImports"]}}, "dynamicRegistration": false}, "completion": {"completionItem": {"snippetSupport": false, "documentationFormat": ["plaintext"]}, "completionItemKind": {"valueSet": [10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 1, 2, 3, 4, 5, 6, 7, 8, 9]}}, "foldingRange": {"lineFoldingOnly": true}, "typeDefinition": {"linkSupport": true}, "typeHierarchy": false, "declaration": {"linkSupport": true}, "definition": {"linkSupport": true}}}, "rootPath": "/Users/speed/src/helix/helix-lsp", "processId": 22973, "trace": "off"}}] +Sun Oct 18 21:15:34 2020:["<---", 7, "rust-analyzer", {"response": {"id": 1, "jsonrpc": "2.0", "result": {"capabilities": {"documentHighlightProvider": true, "hoverProvider": true, "typeDefinitionProvider": true, "workspaceSymbolProvider": true, "referencesProvider": true, "signatureHelpProvider": {"triggerCharacters": ["(", ","]}, "foldingRangeProvider": true, "callHierarchyProvider": true, "codeActionProvider": {"codeActionKinds": ["", "quickfix", "refactor", "refactor.extract", "refactor.inline", "refactor.rewrite"]}, "textDocumentSync": {"save": {}, "change": 2, "openClose": true}, "codeLensProvider": {"resolveProvider": true}, "implementationProvider": true, "documentOnTypeFormattingProvider": {"moreTriggerCharacter": [".", ">"], "firstTriggerCharacter": "="}, "definitionProvider": true, "selectionRangeProvider": true, "semanticTokensProvider": {"legend": {"tokenTypes": ["comment", "keyword", "string", "number", "regexp", "operator", "namespace", "type", "struct", "class", "interface", "enum", "typeParameter", "function", "member", "property", "macro", "variable", "parameter", "label", "attribute", "boolean", "builtinType", "enumMember", "escapeSequence", "formatSpecifier", "generic", "lifetime", "punctuation", "selfKeyword", "typeAlias", "union", "unresolvedReference"], "tokenModifiers": ["documentation", "declaration", "definition", "static", "abstract", "deprecated", "readonly", "constant", "controlFlow", "injected", "mutable", "unsafe", "attribute"]}, "documentProvider": true, "rangeProvider": true}, "documentFormattingProvider": true, "documentSymbolProvider": true, "experimental": {"parentModule": true, "onEnter": true, "runnables": {"kinds": ["cargo"]}, "ssr": true, "joinLines": true}, "renameProvider": {"prepareProvider": true}, "completionProvider": {"triggerCharacters": [":", "."]}}, "serverInfo": {"version": "???????", "name": "rust-analyzer"}}}, "request": {"id": 1, "jsonrpc": "2.0", "method": "initialize", "params": {"rootUri": "file:///Users/speed/src/helix/helix-lsp", "capabilities": {"workspace": {"configuration": true, "applyEdit": true}, "textDocument": {"implementation": {"linkSupport": true}, "documentSymbol": {"symbolKind": {"valueSet": [10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 1, 2, 3, 4, 5, 6, 7, 8, 9]}, "hierarchicalDocumentSymbolSupport": false}, "semanticHighlightingCapabilities": {"semanticHighlighting": false}, "codeAction": {"codeActionLiteralSupport": {"codeActionKind": {"valueSet": ["", "quickfix", "refactor", "refactor.extract", "refactor.inline", "refactor.rewrite", "source", "source.organizeImports"]}}, "dynamicRegistration": false}, "completion": {"completionItem": {"snippetSupport": false, "documentationFormat": ["plaintext"]}, "completionItemKind": {"valueSet": [10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 1, 2, 3, 4, 5, 6, 7, 8, 9]}}, "foldingRange": {"lineFoldingOnly": true}, "typeDefinition": {"linkSupport": true}, "typeHierarchy": false, "declaration": {"linkSupport": true}, "definition": {"linkSupport": true}}}, "rootPath": "/Users/speed/src/helix/helix-lsp", "processId": 22973, "trace": "off"}}}] +Sun Oct 18 21:15:34 2020:["--->", 7, "rust-analyzer", {"method": "initialized", "params": {}}] +Sun Oct 18 21:15:34 2020:[{"response": {"data": {"__data__": "vim-lsp", "server_name": "rust-analyzer"}, "message": "configuration sent"}}] +Sun Oct 18 21:15:34 2020:["s:update_file_content()", 1] +Sun Oct 18 21:15:34 2020:["--->", 7, "rust-analyzer", {"method": "textDocument/didOpen", "params": {"textDocument": {"uri": "file:///Users/speed/src/helix/helix-lsp/src/lib.rs", "version": 1, "languageId": "rust", "text": "use std::collections::HashMap;\n\nuse jsonrpc_core as jsonrpc;\nuse lsp_types as lsp;\n\nuse serde::{Deserialize, Serialize};\nuse serde_json::Value;\n\nuse smol::channel::{Receiver, Sender};\nuse smol::io::{BufReader, BufWriter};\nuse smol::prelude::*;\nuse smol::process::{Child, ChildStderr, ChildStdin, ChildStdout, Command, Stdio};\nuse smol::Executor;\n\nuse futures_util::{select, FutureExt};\n\n/// A type representing all possible values sent from the server to the client.\n#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]\n#[serde(deny_unknown_fields)]\n#[serde(untagged)]\nenum Message {\n /// A regular JSON-RPC request output (single response).\n Output(jsonrpc::Output),\n /// A notification.\n Notification(jsonrpc::Notification),\n /// A JSON-RPC request\n Call(jsonrpc::Call),\n}\n\npub struct Client {\n process: Child,\n stderr: BufReader<ChildStderr>,\n outgoing: Sender<Payload>,\n\n pub request_counter: u64,\n\n capabilities: Option<lsp::ServerCapabilities>,\n}\n\nimpl Client {\n pub fn start(ex: &Executor, cmd: &str, args: &[String]) -> Self {\n let mut process = Command::new(cmd)\n .args(args)\n .stdin(Stdio::piped())\n .stdout(Stdio::piped())\n .stderr(Stdio::piped())\n .spawn()\n .expect(\"Failed to start language server\");\n // smol makes sure the process is reaped on drop, but using kill_on_drop(true) maybe?\n\n // TODO: do we need bufreader/writer here? or do we use async wrappers on unblock?\n let writer = BufWriter::new(process.stdin.take().expect(\"Failed to open stdin\"));\n let reader = BufReader::new(process.stdout.take().expect(\"Failed to open stdout\"));\n let stderr = BufReader::new(process.stderr.take().expect(\"Failed to open stderr\"));\n\n let (incoming, outgoing) = Transport::start(ex, reader, writer);\n\n Client {\n process,\n stderr,\n outgoing,\n\n request_counter: 0,\n\n capabilities: None,\n }\n }\n\n fn next_request_id(&mut self) -> jsonrpc::Id {\n let id = jsonrpc::Id::Num(self.request_counter);\n self.request_counter += 1;\n id\n }\n\n fn to_params(value: Value) -> anyhow::Result<jsonrpc::Params> {\n use jsonrpc::Params;\n\n let params = match value {\n Value::Null => Params::None,\n Value::Bool(_) | Value::Number(_) | Value::String(_) => Params::Array(vec![value]),\n Value::Array(vec) => Params::Array(vec),\n Value::Object(map) => Params::Map(map),\n };\n\n Ok(params)\n }\n\n pub async fn request<R: lsp::request::Request>(\n &mut self,\n params: R::Params,\n ) -> anyhow::Result<R::Result>\n where\n R::Params: serde::Serialize,\n R::Result: core::fmt::Debug, // TODO: temporary\n {\n let params = serde_json::to_value(params)?;\n\n let request = jsonrpc::MethodCall {\n jsonrpc: Some(jsonrpc::Version::V2),\n id: self.next_request_id(),\n method: R::METHOD.to_string(),\n params: Self::to_params(params)?,\n };\n\n let (tx, rx) = smol::channel::bounded::<anyhow::Result<Value>>(1);\n\n self.outgoing\n .send(Payload::Request {\n chan: tx,\n value: request,\n })\n .await?;\n\n let response = rx.recv().await??;\n\n let response = serde_json::from_value(response)?;\n\n // TODO: we should pass request to a sender thread via a channel\n // so it can't be interleaved\n\n // TODO: responses can be out of order, we need to register a single shot response channel\n\n Ok(response)\n }\n\n pub async fn notify<R: lsp::notification::Notification>(\n &mut self,\n params: R::Params,\n ) -> anyhow::Result<()>\n where\n R::Params: serde::Serialize,\n {\n let params = serde_json::to_value(params)?;\n\n let notification = jsonrpc::Notification {\n jsonrpc: Some(jsonrpc::Version::V2),\n method: R::METHOD.to_string(),\n params: Self::to_params(params)?,\n };\n\n self.outgoing\n .send(Payload::Notification(notification))\n .await?;\n\n Ok(())\n }\n\n // -------------------------------------------------------------------------------------------\n // General messages\n // -------------------------------------------------------------------------------------------\n\n pub async fn initialize(&mut self) -> anyhow::Result<()> {\n // TODO: delay any requests that are triggered prior to initialize\n\n #[allow(deprecated)]\n let params = lsp::InitializeParams {\n process_id: Some(u64::from(std::process::id())),\n root_path: None,\n // root_uri: Some(lsp_types::Url::parse(\"file://localhost/\")?),\n root_uri: None, // set to project root in the future\n initialization_options: None,\n capabilities: lsp::ClientCapabilities::default(),\n trace: None,\n workspace_folders: None,\n client_info: None,\n };\n\n let response = self.request::<lsp::request::Initialize>(params).await?;\n self.capabilities = Some(response.capabilities);\n\n // next up, notify<initialized>\n self.notify::<lsp::notification::Initialized>(lsp::InitializedParams {})\n .await?;\n\n Ok(())\n }\n\n pub async fn shutdown(&mut self) -> anyhow::Result<()> {\n self.request::<lsp::request::Shutdown>(()).await\n }\n\n pub async fn exit(&mut self) -> anyhow::Result<()> {\n self.notify::<lsp::notification::Exit>(()).await\n }\n\n // -------------------------------------------------------------------------------------------\n // Text document\n // -------------------------------------------------------------------------------------------\n\n pub async fn text_document_did_open(\n &mut self,\n state: &helix_core::State,\n ) -> anyhow::Result<()> {\n self.notify::<lsp::notification::DidOpenTextDocument>(lsp::DidOpenTextDocumentParams {\n text_document: lsp::TextDocumentItem {\n uri: lsp::Url::from_file_path(\n std::fs::canonicalize(state.path.as_ref().unwrap()).unwrap(),\n )\n .unwrap(),\n language_id: \"rust\".to_string(), // TODO: hardcoded for now\n version: 0,\n text: String::from(&state.doc),\n },\n })\n .await\n }\n\n // TODO: trigger any time history.commit_revision happens\n pub async fn text_document_did_change(\n &mut self,\n state: &helix_core::State,\n ) -> anyhow::Result<()> {\n self.notify::<lsp::notification::DidSaveTextDocument>(lsp::DidSaveTextDocumentParams {\n text_document: lsp::TextDocumentIdentifier::new(\n lsp::Url::from_file_path(state.path.as_ref().unwrap()).unwrap(),\n ),\n text: None, // TODO?\n })\n .await\n }\n\n pub async fn text_document_did_close(&mut self) -> anyhow::Result<()> {\n unimplemented!()\n }\n\n // will_save / will_save_wait_until\n\n pub async fn text_document_did_save(&mut self) -> anyhow::Result<()> {\n unimplemented!()\n }\n}\n\nenum Payload {\n Request {\n chan: Sender<anyhow::Result<Value>>,\n value: jsonrpc::MethodCall,\n },\n Notification(jsonrpc::Notification),\n}\n\nstruct Transport {\n incoming: Sender<Message>,\n outgoing: Receiver<Payload>,\n\n pending_requests: HashMap<jsonrpc::Id, Sender<anyhow::Result<Value>>>,\n headers: HashMap<String, String>,\n\n writer: BufWriter<ChildStdin>,\n reader: BufReader<ChildStdout>,\n}\n\nimpl Transport {\n pub fn start(\n ex: &Executor,\n reader: BufReader<ChildStdout>,\n writer: BufWriter<ChildStdin>,\n ) -> (Receiver<Message>, Sender<Payload>) {\n let (incoming, rx) = smol::channel::unbounded();\n let (tx, outgoing) = smol::channel::unbounded();\n\n let transport = Self {\n reader,\n writer,\n incoming,\n outgoing,\n pending_requests: Default::default(),\n headers: Default::default(),\n };\n\n ex.spawn(transport.duplex()).detach();\n\n (rx, tx)\n }\n\n async fn recv(\n reader: &mut (impl AsyncBufRead + Unpin),\n headers: &mut HashMap<String, String>,\n ) -> Result<Message, std::io::Error> {\n // read headers\n loop {\n let mut header = String::new();\n // detect pipe closed if 0\n reader.read_line(&mut header).await?;\n let header = header.trim();\n\n if header.is_empty() {\n break;\n }\n\n let parts: Vec<&str> = header.split(\": \").collect();\n if parts.len() != 2 {\n // return Err(Error::new(ErrorKind::Other, \"Failed to parse header\"));\n panic!()\n }\n headers.insert(parts[0].to_string(), parts[1].to_string());\n }\n\n // find content-length\n let content_length = headers.get(\"Content-Length\").unwrap().parse().unwrap();\n\n let mut content = vec![0; content_length];\n reader.read_exact(&mut content).await?;\n let msg = String::from_utf8(content).unwrap();\n\n // read data\n\n // try parsing as output (server response) or call (server request)\n let output: serde_json::Result<Message> = serde_json::from_str(&msg);\n\n Ok(output?)\n }\n\n pub async fn send_payload(&mut self, payload: Payload) -> anyhow::Result<()> {\n match payload {\n Payload::Request { chan, value } => {\n self.pending_requests.insert(value.id.clone(), chan);\n\n let json = serde_json::to_string(&value)?;\n self.send(json).await\n }\n Payload::Notification(value) => {\n let json = serde_json::to_string(&value)?;\n self.send(json).await\n }\n }\n }\n\n pub async fn send(&mut self, request: String) -> anyhow::Result<()> {\n println!(\"-> {}\", request);\n\n // send the headers\n self.writer\n .write_all(format!(\"Content-Length: {}\\r\\n\\r\\n\", request.len()).as_bytes())\n .await?;\n\n // send the body\n self.writer.write_all(request.as_bytes()).await?;\n\n self.writer.flush().await?;\n\n Ok(())\n }\n\n pub async fn recv_response(&mut self, output: jsonrpc::Output) -> anyhow::Result<()> {\n match output {\n jsonrpc::Output::Success(jsonrpc::Success { id, result, .. }) => {\n println!(\"<- {}\", result);\n\n let tx = self\n .pending_requests\n .remove(&id)\n .expect(\"pending_request with id not found!\");\n tx.send(Ok(result)).await?;\n }\n jsonrpc::Output::Failure(_) => panic!(\"recv fail\"),\n msg => unimplemented!(\"{:?}\", msg),\n }\n Ok(())\n }\n\n pub async fn duplex(mut self) {\n loop {\n select! {\n // client -> server\n msg = self.outgoing.next().fuse() => {\n if msg.is_none() {\n break;\n }\n let msg = msg.unwrap();\n\n self.send_payload(msg).await.unwrap();\n }\n // server <- client\n msg = Self::recv(&mut self.reader, &mut self.headers).fuse() => {\n if msg.is_err() {\n break;\n }\n let msg = msg.unwrap();\n\n match msg {\n Message::Output(output) => self.recv_response(output).await.unwrap(),\n Message::Notification(_) => {\n // dispatch\n }\n Message::Call(_) => {\n // dispatch\n }\n };\n }\n }\n }\n }\n}\n"}}}] +Sun Oct 18 21:15:34 2020:[{"response": {"data": {"__data__": "vim-lsp", "server_name": "rust-analyzer"}, "message": "server already started"}}] +Sun Oct 18 21:15:34 2020:[{"response": {"data": {"__data__": "vim-lsp", "init_result": {"id": 1, "jsonrpc": "2.0", "result": {"capabilities": {"documentHighlightProvider": true, "hoverProvider": true, 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diff --git a/helix-lsp/src/lib.rs b/helix-lsp/src/lib.rs index b371f337..41b3fdb2 100644 --- a/helix-lsp/src/lib.rs +++ b/helix-lsp/src/lib.rs @@ -1,18 +1,22 @@ +mod transport; + +use transport::{Payload, Transport}; + use std::collections::HashMap; use jsonrpc_core as jsonrpc; use lsp_types as lsp; +use serde_json::Value; use serde::{Deserialize, Serialize}; -use serde_json::Value; -use smol::channel::{Receiver, Sender}; -use smol::io::{BufReader, BufWriter}; use smol::prelude::*; -use smol::process::{Child, ChildStderr, ChildStdin, ChildStdout, Command, Stdio}; -use smol::Executor; - -use futures_util::{select, FutureExt}; +use smol::{ + channel::{Receiver, Sender}, + io::{BufReader, BufWriter}, + process::{Child, ChildStderr, Command, Stdio}, + Executor, +}; /// A type representing all possible values sent from the server to the client. #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)] @@ -27,14 +31,40 @@ enum Message { Call(jsonrpc::Call), } +#[derive(Debug, PartialEq, Clone)] +enum Notification {} + +impl Notification { + pub fn parse(method: &str, params: jsonrpc::Params) { + use lsp::notification::Notification as _; + + match method { + lsp::notification::PublishDiagnostics::METHOD => { + let params: lsp::PublishDiagnosticsParams = params + .parse() + .expect("Failed to parse PublishDiagnostics params"); + + println!("{:?}", params); + + // TODO: need to loop over diagnostics and distinguish them by URI + } + _ => println!("unhandled notification: {}", method), + } + } +} + pub struct Client { process: Child, stderr: BufReader<ChildStderr>, + outgoing: Sender<Payload>, + incoming: Receiver<Message>, pub request_counter: u64, capabilities: Option<lsp::ServerCapabilities>, + // TODO: handle PublishDiagnostics Version + diagnostics: HashMap<lsp::Url, Vec<lsp::Diagnostic>>, } impl Client { @@ -58,11 +88,14 @@ impl Client { Client { process, stderr, + outgoing, + incoming, request_counter: 0, capabilities: None, + diagnostics: HashMap::new(), } } @@ -187,191 +220,45 @@ impl Client { // Text document // ------------------------------------------------------------------------------------------- - pub async fn text_document_did_open(&mut self) -> anyhow::Result<()> { + pub async fn text_document_did_open( + &mut self, + state: &helix_core::State, + ) -> anyhow::Result<()> { self.notify::<lsp::notification::DidOpenTextDocument>(lsp::DidOpenTextDocumentParams { text_document: lsp::TextDocumentItem { - uri: lsp::Url::parse(".")?, - language_id: "rust".to_string(), + uri: lsp::Url::from_file_path( + std::fs::canonicalize(state.path.as_ref().unwrap()).unwrap(), + ) + .unwrap(), + language_id: "rust".to_string(), // TODO: hardcoded for now version: 0, - text: "".to_string(), + text: String::from(&state.doc), }, }) .await } - pub async fn text_document_did_change(&mut self) -> anyhow::Result<()> { - unimplemented!() - } - - // will_save / will_save_wait_until - - pub async fn text_document_did_save(&mut self) -> anyhow::Result<()> { - unimplemented!() + // TODO: trigger any time history.commit_revision happens + pub async fn text_document_did_change( + &mut self, + state: &helix_core::State, + ) -> anyhow::Result<()> { + self.notify::<lsp::notification::DidSaveTextDocument>(lsp::DidSaveTextDocumentParams { + text_document: lsp::TextDocumentIdentifier::new( + lsp::Url::from_file_path(state.path.as_ref().unwrap()).unwrap(), + ), + text: None, // TODO? + }) + .await } pub async fn text_document_did_close(&mut self) -> anyhow::Result<()> { unimplemented!() } -} - -enum Payload { - Request { - chan: Sender<anyhow::Result<Value>>, - value: jsonrpc::MethodCall, - }, - Notification(jsonrpc::Notification), -} - -struct Transport { - incoming: Sender<Message>, - outgoing: Receiver<Payload>, - - pending_requests: HashMap<jsonrpc::Id, Sender<anyhow::Result<Value>>>, - headers: HashMap<String, String>, - - writer: BufWriter<ChildStdin>, - reader: BufReader<ChildStdout>, -} - -impl Transport { - pub fn start( - ex: &Executor, - reader: BufReader<ChildStdout>, - writer: BufWriter<ChildStdin>, - ) -> (Receiver<Message>, Sender<Payload>) { - let (incoming, rx) = smol::channel::unbounded(); - let (tx, outgoing) = smol::channel::unbounded(); - - let transport = Self { - reader, - writer, - incoming, - outgoing, - pending_requests: Default::default(), - headers: Default::default(), - }; - - ex.spawn(transport.duplex()).detach(); - - (rx, tx) - } - - async fn recv( - reader: &mut (impl AsyncBufRead + Unpin), - headers: &mut HashMap<String, String>, - ) -> Result<Message, std::io::Error> { - // read headers - loop { - let mut header = String::new(); - // detect pipe closed if 0 - reader.read_line(&mut header).await?; - let header = header.trim(); - - if header.is_empty() { - break; - } - - let parts: Vec<&str> = header.split(": ").collect(); - if parts.len() != 2 { - // return Err(Error::new(ErrorKind::Other, "Failed to parse header")); - panic!() - } - headers.insert(parts[0].to_string(), parts[1].to_string()); - } - - // find content-length - let content_length = headers.get("Content-Length").unwrap().parse().unwrap(); - - let mut content = vec![0; content_length]; - reader.read_exact(&mut content).await?; - let msg = String::from_utf8(content).unwrap(); - - // read data - - // try parsing as output (server response) or call (server request) - let output: serde_json::Result<Message> = serde_json::from_str(&msg); - - Ok(output?) - } - pub async fn send_payload(&mut self, payload: Payload) -> anyhow::Result<()> { - match payload { - Payload::Request { chan, value } => { - self.pending_requests.insert(value.id.clone(), chan); - - let json = serde_json::to_string(&value)?; - self.send(json).await - } - Payload::Notification(value) => { - let json = serde_json::to_string(&value)?; - self.send(json).await - } - } - } - - pub async fn send(&mut self, request: String) -> anyhow::Result<()> { - println!("-> {}", request); - - // send the headers - self.writer - .write_all(format!("Content-Length: {}\r\n\r\n", request.len()).as_bytes()) - .await?; - - // send the body - self.writer.write_all(request.as_bytes()).await?; - - self.writer.flush().await?; - - Ok(()) - } - - pub async fn recv_response(&mut self, output: jsonrpc::Output) -> anyhow::Result<()> { - match output { - jsonrpc::Output::Success(jsonrpc::Success { id, result, .. }) => { - println!("<- {}", result); - - let tx = self - .pending_requests - .remove(&id) - .expect("pending_request with id not found!"); - tx.send(Ok(result)).await?; - } - jsonrpc::Output::Failure(_) => panic!("recv fail"), - msg => unimplemented!("{:?}", msg), - } - Ok(()) - } + // will_save / will_save_wait_until - pub async fn duplex(mut self) { - loop { - select! { - // client -> server - msg = self.outgoing.next().fuse() => { - if msg.is_none() { - break; - } - let msg = msg.unwrap(); - - self.send_payload(msg).await.unwrap(); - } - // server <- client - msg = Self::recv(&mut self.reader, &mut self.headers).fuse() => { - if msg.is_err() { - break; - } - let msg = msg.unwrap(); - - match msg { - Message::Output(output) => self.recv_response(output).await.unwrap(), - Message::Notification(_) => { - // dispatch - } - Message::Call(_) => { - // dispatch - } - }; - } - } - } + pub async fn text_document_did_save(&mut self) -> anyhow::Result<()> { + unimplemented!() } } diff --git a/helix-lsp/src/transport.rs b/helix-lsp/src/transport.rs new file mode 100644 index 00000000..c44ffa91 --- /dev/null +++ b/helix-lsp/src/transport.rs @@ -0,0 +1,189 @@ +use std::collections::HashMap; + +use crate::{Message, Notification}; + +use jsonrpc_core as jsonrpc; +use lsp_types as lsp; +use serde_json::Value; + +use smol::prelude::*; + +use smol::{ + channel::{Receiver, Sender}, + io::{BufReader, BufWriter}, + process::{ChildStderr, ChildStdin, ChildStdout}, + Executor, +}; + +pub(crate) enum Payload { + Request { + chan: Sender<anyhow::Result<Value>>, + value: jsonrpc::MethodCall, + }, + Notification(jsonrpc::Notification), +} + +pub(crate) struct Transport { + incoming: Sender<Message>, + outgoing: Receiver<Payload>, + + pending_requests: HashMap<jsonrpc::Id, Sender<anyhow::Result<Value>>>, + headers: HashMap<String, String>, + + writer: BufWriter<ChildStdin>, + reader: BufReader<ChildStdout>, +} + +impl Transport { + pub fn start( + ex: &Executor, + reader: BufReader<ChildStdout>, + writer: BufWriter<ChildStdin>, + ) -> (Receiver<Message>, Sender<Payload>) { + let (incoming, rx) = smol::channel::unbounded(); + let (tx, outgoing) = smol::channel::unbounded(); + + let transport = Self { + reader, + writer, + incoming, + outgoing, + pending_requests: Default::default(), + headers: Default::default(), + }; + + ex.spawn(transport.duplex()).detach(); + + (rx, tx) + } + + async fn recv( + reader: &mut (impl AsyncBufRead + Unpin), + headers: &mut HashMap<String, String>, + ) -> Result<Message, std::io::Error> { + // read headers + loop { + let mut header = String::new(); + // detect pipe closed if 0 + reader.read_line(&mut header).await?; + let header = header.trim(); + + if header.is_empty() { + break; + } + + let parts: Vec<&str> = header.split(": ").collect(); + if parts.len() != 2 { + // return Err(Error::new(ErrorKind::Other, "Failed to parse header")); + panic!() + } + headers.insert(parts[0].to_string(), parts[1].to_string()); + } + + // find content-length + let content_length = headers.get("Content-Length").unwrap().parse().unwrap(); + + let mut content = vec![0; content_length]; + reader.read_exact(&mut content).await?; + let msg = String::from_utf8(content).unwrap(); + + // read data + + // try parsing as output (server response) or call (server request) + let output: serde_json::Result<Message> = serde_json::from_str(&msg); + + Ok(output?) + } + + pub async fn send_payload(&mut self, payload: Payload) -> anyhow::Result<()> { + match payload { + Payload::Request { chan, value } => { + self.pending_requests.insert(value.id.clone(), chan); + + let json = serde_json::to_string(&value)?; + self.send(json).await + } + Payload::Notification(value) => { + let json = serde_json::to_string(&value)?; + self.send(json).await + } + } + } + + pub async fn send(&mut self, request: String) -> anyhow::Result<()> { + println!("-> {}", request); + + // send the headers + self.writer + .write_all(format!("Content-Length: {}\r\n\r\n", request.len()).as_bytes()) + .await?; + + // send the body + self.writer.write_all(request.as_bytes()).await?; + + self.writer.flush().await?; + + Ok(()) + } + + pub async fn recv_msg(&mut self, msg: Message) -> anyhow::Result<()> { + match msg { + Message::Output(output) => self.recv_response(output).await?, + Message::Notification(jsonrpc::Notification { method, params, .. }) => { + let notification = Notification::parse(&method, params); + + println!("<- {} {:?}", method, notification); + // dispatch + } + Message::Call(call) => { + println!("<- {:?}", call); + // dispatch + } + _ => unreachable!(), + }; + Ok(()) + } + + pub async fn recv_response(&mut self, output: jsonrpc::Output) -> anyhow::Result<()> { + match output { + jsonrpc::Output::Success(jsonrpc::Success { id, result, .. }) => { + println!("<- {}", result); + + let tx = self + .pending_requests + .remove(&id) + .expect("pending_request with id not found!"); + tx.send(Ok(result)).await?; + } + jsonrpc::Output::Failure(_) => panic!("recv fail"), + msg => unimplemented!("{:?}", msg), + } + Ok(()) + } + + pub async fn duplex(mut self) { + use futures_util::{select, FutureExt}; + loop { + select! { + // client -> server + msg = self.outgoing.next().fuse() => { + if msg.is_none() { + break; + } + let msg = msg.unwrap(); + + self.send_payload(msg).await.unwrap(); + } + // server <- client + msg = Self::recv(&mut self.reader, &mut self.headers).fuse() => { + if msg.is_err() { + break; + } + let msg = msg.unwrap(); + + self.recv_msg(msg).await.unwrap(); + } + } + } + } +} |