microsoft/typespec
Publicmirrored from https://github.com/microsoft/typespecAvailable
packages/compiler/server/server.ts
151lines · modecode
| 1 | import { Console } from "console"; |
| 2 | import { writeFile } from "fs/promises"; |
| 3 | import inspector from "inspector"; |
| 4 | import mkdirp from "mkdirp"; |
| 5 | import { join } from "path"; |
| 6 | import { fileURLToPath } from "url"; |
| 7 | import { TextDocument } from "vscode-languageserver-textdocument"; |
| 8 | import { |
| 9 | createConnection, |
| 10 | ProposedFeatures, |
| 11 | PublishDiagnosticsParams, |
| 12 | TextDocuments, |
| 13 | } from "vscode-languageserver/node.js"; |
| 14 | import { NodeHost } from "../core/node-host.js"; |
| 15 | import { typespecVersion } from "../core/util.js"; |
| 16 | import { createServer, Server, ServerHost } from "./serverlib.js"; |
| 17 | |
| 18 | let server: Server | undefined = undefined; |
| 19 | |
| 20 | const profileDir = process.env.TYPESPEC_SERVER_PROFILE_DIR; |
| 21 | const logTiming = process.env.TYPESPEC_SERVER_LOG_TIMING === "true"; |
| 22 | let profileSession: inspector.Session | undefined; |
| 23 | |
| 24 | process.on("unhandledRejection", fatalError); |
| 25 | try { |
| 26 | main(); |
| 27 | } catch (e) { |
| 28 | fatalError(e); |
| 29 | } |
| 30 | |
| 31 | function main() { |
| 32 | // Redirect all console stdout output to stderr since LSP pipe uses stdout |
| 33 | // and writing to stdout for anything other than LSP protocol will break |
| 34 | // things badly. |
| 35 | global.console = new Console(process.stderr, process.stderr); |
| 36 | |
| 37 | let clientHasWorkspaceFolderCapability = false; |
| 38 | const connection = createConnection(ProposedFeatures.all); |
| 39 | const documents = new TextDocuments(TextDocument); |
| 40 | |
| 41 | const host: ServerHost = { |
| 42 | compilerHost: NodeHost, |
| 43 | sendDiagnostics(params: PublishDiagnosticsParams) { |
| 44 | void connection.sendDiagnostics(params); |
| 45 | }, |
| 46 | log(message: string) { |
| 47 | connection.console.log(message); |
| 48 | }, |
| 49 | getOpenDocumentByURL(url: string) { |
| 50 | return documents.get(url); |
| 51 | }, |
| 52 | }; |
| 53 | |
| 54 | const s = createServer(host); |
| 55 | server = s; |
| 56 | s.log(`TypeSpec language server v${typespecVersion}`); |
| 57 | s.log("Module", fileURLToPath(import.meta.url)); |
| 58 | s.log("Process ID", process.pid); |
| 59 | s.log("Command Line", process.argv); |
| 60 | |
| 61 | if (profileDir) { |
| 62 | s.log("CPU profiling enabled", profileDir); |
| 63 | profileSession = new inspector.Session(); |
| 64 | profileSession.connect(); |
| 65 | } |
| 66 | |
| 67 | connection.onInitialize(async (params) => { |
| 68 | if (params.capabilities.workspace?.workspaceFolders) { |
| 69 | clientHasWorkspaceFolderCapability = true; |
| 70 | } |
| 71 | return await s.initialize(params); |
| 72 | }); |
| 73 | |
| 74 | connection.onInitialized((params) => { |
| 75 | if (clientHasWorkspaceFolderCapability) { |
| 76 | connection.workspace.onDidChangeWorkspaceFolders(s.workspaceFoldersChanged); |
| 77 | } |
| 78 | s.initialized(params); |
| 79 | }); |
| 80 | |
| 81 | connection.onDocumentFormatting(profile(s.formatDocument)); |
| 82 | connection.onDidChangeWatchedFiles(profile(s.watchedFilesChanged)); |
| 83 | connection.onDefinition(profile(s.gotoDefinition)); |
| 84 | connection.onCompletion(profile(s.complete)); |
| 85 | connection.onReferences(profile(s.findReferences)); |
| 86 | connection.onRenameRequest(profile(s.rename)); |
| 87 | connection.onPrepareRename(profile(s.prepareRename)); |
| 88 | connection.onFoldingRanges(profile(s.getFoldingRanges)); |
| 89 | connection.onDocumentSymbol(profile(s.getDocumentSymbols)); |
| 90 | connection.onDocumentHighlight(profile(s.findDocumentHighlight)); |
| 91 | connection.onHover(profile(s.getHover)); |
| 92 | connection.onSignatureHelp(profile(s.getSignatureHelp)); |
| 93 | connection.languages.semanticTokens.on(profile(s.buildSemanticTokens)); |
| 94 | |
| 95 | documents.onDidChangeContent(profile(s.checkChange)); |
| 96 | documents.onDidClose(profile(s.documentClosed)); |
| 97 | |
| 98 | documents.listen(connection); |
| 99 | connection.listen(); |
| 100 | } |
| 101 | |
| 102 | function fatalError(e: unknown) { |
| 103 | // If we failed to send any log messages over LSP pipe, send them to |
| 104 | // stderr before exiting. |
| 105 | for (const pending of server?.pendingMessages ?? []) { |
| 106 | // eslint-disable-next-line no-console |
| 107 | console.error(pending); |
| 108 | } |
| 109 | // eslint-disable-next-line no-console |
| 110 | console.error(e); |
| 111 | process.exit(1); |
| 112 | } |
| 113 | |
| 114 | function profile<T extends (...args: any) => any>(func: T): T { |
| 115 | const name = func.name; |
| 116 | |
| 117 | if (logTiming) { |
| 118 | func = time(func); |
| 119 | } |
| 120 | |
| 121 | if (!profileDir) { |
| 122 | return func; |
| 123 | } |
| 124 | |
| 125 | return (async (...args: any[]) => { |
| 126 | profileSession!.post("Profiler.enable", () => { |
| 127 | // eslint-disable-next-line @typescript-eslint/no-misused-promises |
| 128 | profileSession!.post("Profiler.start", async () => { |
| 129 | const ret = await func.apply(undefined!, args); |
| 130 | // eslint-disable-next-line @typescript-eslint/no-misused-promises |
| 131 | profileSession!.post("Profiler.stop", async (err, args) => { |
| 132 | if (!err && args.profile) { |
| 133 | await mkdirp(profileDir!); |
| 134 | await writeFile(join(profileDir!, name + ".cpuprofile"), JSON.stringify(args.profile)); |
| 135 | } |
| 136 | }); |
| 137 | return ret; |
| 138 | }); |
| 139 | }); |
| 140 | }) as T; |
| 141 | } |
| 142 | |
| 143 | function time<T extends (...args: any) => any>(func: T): T { |
| 144 | return (async (...args: any[]) => { |
| 145 | const start = Date.now(); |
| 146 | const ret = await func.apply(undefined!, args); |
| 147 | const end = Date.now(); |
| 148 | server!.log(func.name, end - start + " ms"); |
| 149 | return ret; |
| 150 | }) as T; |
| 151 | } |
| 152 | |