Macro pyri_state::state

macro_rules! state {
    ($state:pat $(if $guard:expr)? $(,)?) => { ... };
    ($old:pat => $new:pat $(if $guard:expr)? $(,)?) => { ... };
}

A macro for building pattern-matching FnStatePattern and FnStateTransPattern instances.

Examples

State pattern-matching:

state!(Level(4 | 7 | 10)).on_enter(save_checkpoint)

State transition pattern-matching:

state!(Level(x @ 1..=3) => y if y.0 == 10 - x).on_trans(do_something_cool)