Function initialize

client/src/client.ts:2583–2660

(connection: IConnection)

	}

	private initialize(connection: IConnection): Thenable<InitializeResult> {
		this.refreshTrace(connection, false);
		let initOption = this._clientOptions.initializationOptions;
		let rootPath = this._clientOptions.workspaceFolder
			? this._clientOptions.workspaceFolder.uri.fsPath
			: this._clientGetRootPath();
		let initParams: InitializeParams = {
			processId: process.pid,
			rootPath: rootPath ? rootPath : null,
			rootUri: rootPath ? this._c2p.asUri(Uri.file(rootPath)) : null,
			capabilities: this.computeClientCapabilities(),
			initializationOptions: Is.func(initOption) ? initOption() : initOption,
			trace: Trace.toString(this._trace),
			workspaceFolders: null
		};
		this.fillInitializeParams(initParams);
		return connection.initialize(initParams).then((result) => {
			this._resolvedConnection = connection;
			this._initializeResult = result;
			this.state = ClientState.Running;

			let textDocumentSyncOptions: TextDocumentSyncOptions | undefined = undefined;
			if (Is.number(result.capabilities.textDocumentSync) && result.capabilities.textDocumentSync !== TextDocumentSyncKind.None) {
				textDocumentSyncOptions = {
					openClose: true,
					change: result.capabilities.textDocumentSync,
					save: {
						includeText: false
					}
				};
			} else if (result.capabilities.textDocumentSync !== void 0 && result.capabilities.textDocumentSync !== null) {
				textDocumentSyncOptions = result.capabilities.textDocumentSync as TextDocumentSyncOptions;
			}
			this._capabilities = Object.assign({}, result.capabilities, { resolvedTextDocumentSync: textDocumentSyncOptions });

			connection.onDiagnostics(params => this.handleDiagnostics(params));
			connection.onRequest(RegistrationRequest.type, params => this.handleRegistrationRequest(params));
			// See https://github.com/Microsoft/vscode-languageserver-node/issues/199
			connection.onRequest('client/registerFeature', params => this.handleRegistrationRequest(params));
			connection.onRequest(UnregistrationRequest.type, params => this.handleUnregistrationRequest(params));
			// See https://github.com/Microsoft/vscode-languageserver-node/issues/199
			connection.onRequest('client/unregisterFeature', params => this.handleUnregistrationRequest(params));
			connection.onRequest(ApplyWorkspaceEditRequest.type, params => this.handleApplyWorkspaceEdit(params));

			connection.sendNotification(InitializedNotification.type, {});

			this.hookFileEvents(connection);
			this.hookConfigurationChanged(connection);
			this.initializeFeatures(connection);
			this._onReadyCallbacks.resolve();
			return result;
		}, (error: any) => {
			if (this._clientOptions.initializationFailedHandler) {
				if (this._clientOptions.initializationFailedHandler(error)) {
					this.initialize(connection);
				} else {
					this.stop();
					this._onReadyCallbacks.reject(error);