Struct Msg

pub struct Msg(/* private fields */);

A message returned by BastionContext::recv or BastionContext::try_recv that should be passed to the [msg!] macro to try to match what its real type is.

Example

Bastion::children(|children| {
    children.with_exec(|ctx: BastionContext| {
        async move {
            loop {
                let msg: SignedMessage = ctx.recv().await?;
                msg! { msg,
                    // We match a broadcasted `&'static str`s...
                    ref msg: &'static str => {
                        // Note that `msg` will actually be a `&&'static str`.
                        assert_eq!(msg, &"A message containing data.");

                        // Handle the message...
                    };
                    // We match a `&'static str`s "told" to this child...
                    msg: &'static str => {
                        assert_eq!(msg, "A message containing data.");
                        // Handle the message...

                        // get message signature
                        let sign = signature!();
                        ctx.tell(&sign, "A message containing reply").unwrap();
                    };
                    // We match a `&'static str`s "asked" to this child...
                    msg: &'static str =!> {
                        assert_eq!(msg, "A message containing data.");
                        // Handle the message...

                        // ...and eventually answer to it...
                        answer!(ctx, "An answer message containing data.");
                    };
                    // We match a message that wasn't previously matched...
                    _: _ => ();
                }
            }
        }
    })
}).expect("Couldn't start the children group.");

Trait Implementations

impl AsRef<dyn Any> for Msg

fn as_ref(&self) -> &dyn Any

Converts this type into a shared reference of the (usually inferred) input type.

impl Debug for Msg

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.