[SYNTAX] Result<Self, Box<dyn Error>> throws off syntax highlighting

[adamierymenko]

Describe what doesn't look right It looks like certain template constructs throw off the highlighter. Can't figure out exactly what it is but I can reproduce.

Screenshots

How would you expect the features to be highlighted? It should highlight Box<dyn Error> and other things after it normally

Sample code

impl Service {
    pub async fn new(base_path: &str) -> Result<Self, Box<dyn Error>> {
        let mut svc = Self {
            rt: tokio::runtime::Handle::current(),
            data: DataDir::open(base_path).await.map_err(|e| Box::new(e))?,
            udp_sockets: parking_lot::RwLock::new(UdpSocketCollection {
                id_assignment_counter: 1,
                sockets: HashMap::with_capacity(16),
                socket_ids: Vec::with_capacity(4),
            }),
            core: None,
        };
        let _ = svc.core.insert(NetworkHypervisor::new(&svc, true).map_err(|e| Box::new(e))?);

        let config = svc.data.config().await;

        Ok(svc)
    }
}

Additional Information

[kilbd]

Thank you for submitting this issue! You managed to uncover TWO syntax issues with the above snippet. First, as you noted, is that return types weren't parsing generics and I don't know how this hasn't come up before. Second, I had overlooked the async keyword for methods, which was breaking parsing.

I added fixes in the v2.0.2 patch release that I just submitted to the Extension Library.