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|
import { spawn } from "child_process";
import path from "path";
import {
createMessageConnection,
StreamMessageReader,
StreamMessageWriter,
} from "vscode-jsonrpc/node";
import type { Diagnostic as VSCodeDiagnostic } from "vscode-languageserver-types";
import { App } from "../app/app";
import { Log } from "../util/log";
import { LANGUAGE_EXTENSIONS } from "./language";
import { Bus } from "../bus";
import z from "zod";
export namespace LSPClient {
const log = Log.create({ service: "lsp.client" });
export type Info = Awaited<ReturnType<typeof create>>;
export type Diagnostic = VSCodeDiagnostic;
export const Event = {
Diagnostics: Bus.event(
"lsp.client.diagnostics",
z.object({
serverID: z.string(),
path: z.string(),
}),
),
};
export async function create(input: { cmd: string[]; serverID: string }) {
log.info("starting client", input);
const app = await App.use();
const [command, ...args] = input.cmd;
const server = spawn(command, args, {
stdio: ["pipe", "pipe", "pipe"],
cwd: app.root,
});
const connection = createMessageConnection(
new StreamMessageReader(server.stdout),
new StreamMessageWriter(server.stdin),
);
const diagnostics = new Map<string, Diagnostic[]>();
connection.onNotification("textDocument/publishDiagnostics", (params) => {
const path = new URL(params.uri).pathname;
log.info("textDocument/publishDiagnostics", {
path,
});
const exists = diagnostics.has(path);
diagnostics.set(path, params.diagnostics);
// servers seem to send one blank publishDiagnostics event before the first real one
if (!exists && !params.diagnostics.length) return;
Bus.publish(Event.Diagnostics, { path, serverID: input.serverID });
});
connection.listen();
await connection.sendRequest("initialize", {
processId: server.pid,
initializationOptions: {
workspaceFolders: [
{
name: "workspace",
uri: "file://" + app.root,
},
],
tsserver: {
path: require.resolve("typescript/lib/tsserver.js"),
},
},
capabilities: {
workspace: {
configuration: true,
didChangeConfiguration: {
dynamicRegistration: true,
},
didChangeWatchedFiles: {
dynamicRegistration: true,
relativePatternSupport: true,
},
},
textDocument: {
synchronization: {
dynamicRegistration: true,
didSave: true,
},
completion: {
completionItem: {},
},
codeLens: {
dynamicRegistration: true,
},
documentSymbol: {},
codeAction: {
codeActionLiteralSupport: {
codeActionKind: {
valueSet: [],
},
},
},
publishDiagnostics: {
versionSupport: true,
},
semanticTokens: {
requests: {
range: {},
full: {},
},
tokenTypes: [],
tokenModifiers: [],
formats: [],
},
},
window: {},
},
});
await connection.sendNotification("initialized", {});
log.info("initialized");
const files = new Set<string>();
const result = {
get clientID() {
return input.serverID;
},
get connection() {
return connection;
},
notify: {
async open(input: { path: string }) {
const file = Bun.file(input.path);
const text = await file.text();
const opened = files.has(input.path);
if (!opened) {
log.info("textDocument/didOpen", input);
diagnostics.delete(input.path);
const extension = path.extname(input.path);
const languageId = LANGUAGE_EXTENSIONS[extension] ?? "plaintext";
await connection.sendNotification("textDocument/didOpen", {
textDocument: {
uri: `file://` + input.path,
languageId,
version: Date.now(),
text,
},
});
files.add(input.path);
return;
}
log.info("textDocument/didChange", input);
diagnostics.delete(input.path);
await connection.sendNotification("textDocument/didChange", {
textDocument: {
uri: `file://` + input.path,
version: Date.now(),
},
contentChanges: [
{
text,
},
],
});
},
},
get diagnostics() {
return diagnostics;
},
async waitForDiagnostics(input: { path: string }) {
log.info("waiting for diagnostics", input);
let unsub: () => void;
let timeout: NodeJS.Timeout;
return await Promise.race([
new Promise<void>(async (resolve) => {
unsub = Bus.subscribe(Event.Diagnostics, (event) => {
if (
event.properties.path === input.path &&
event.properties.serverID === result.clientID
) {
log.info("got diagnostics", input);
clearTimeout(timeout);
unsub?.();
resolve();
}
});
}),
new Promise<void>((resolve) => {
timeout = setTimeout(() => {
log.info("timed out refreshing diagnostics", input);
unsub?.();
resolve();
}, 5000);
}),
]);
},
async shutdown() {
log.info("shutting down");
connection.end();
connection.dispose();
},
};
return result;
}
}
|
