fix handling of shutdown request and exit notification

vhdl_ls did not quit/exit after receiving the shutdown request and exit
notification, because the lsp_server handle_shutdown request already
waits for the exit notification and only returns true, if it is
received. With the old setup the handler for the exit notification was
never called, because handle_shutdown consumed the notification.

fixes #142

Author: Gaweringo

vhdl_ls/src/stdio_server.rs

@@ -88,9 +88,10 @@ impl ConnectionRpcChannel {
             match message {
                 lsp_server::Message::Request(request) => {
                     match self.connection.handle_shutdown(&request) {
-                        Ok(shutdown) => {
-                            if shutdown {
+                        Ok(should_exit) => {
+                            if should_exit {
                                 server.shutdown_server();
+                                server.exit_notification();
                             } else {
                                 self.handle_request(&mut server, request)
                             }
@@ -272,11 +273,6 @@ impl ConnectionRpcChannel {
             Ok(params) => return server.workspace_did_change_watched_files(&params),
             Err(notification) => notification,
         };
-        // exit
-        let notification = match extract::<notification::Exit>(notification) {
-            Ok(_params) => return server.exit_notification(),
-            Err(notification) => notification,
-        };
 
         if !notification.method.starts_with("$/") {
             debug!("Unhandled notification: {notification:?}");