Fix CPU blocking async

src/handler.rs

@@ -12,6 +12,7 @@ use std::borrow::Cow;
 use std::collections::HashMap;
 use std::str::FromStr;
 use std::sync::{Arc, Mutex};
+use tokio::task;
 use xbasic::basic_io::BasicIO;
 use xbasic::expr::ExprValue;
 use xbasic::xbasic::XBasicBuilder;
@@ -204,7 +205,7 @@ impl Handler {
 		let code = self.programs.lock().unwrap()[&msg.author.id].stringify();
 		let io = DiscordIO::new();
 
-		let (output, fb, errors) = {
+		let (output, fb, errors) = task::spawn_blocking(move || {
 			let mut xbb = XBasicBuilder::new(io);
 			xbb.compute_limit(1000000000);
 
@@ -247,7 +248,9 @@ impl Handler {
 			};
 
 			(xb.get_io().s.clone(), xb.get_io().frame.clone(), errors)
-		};
+		})
+		.await
+		.unwrap();
 
 		if !output.is_empty() {
 			msg.channel_id.say(&ctx, output).await.unwrap();