#fsm #state #state-machine

nightly no-std sm

💋 SM – a static State Machine library

4 releases (breaking)

0.4.0 Sep 4, 2018
0.3.0 Sep 3, 2018
0.2.0 Sep 3, 2018
0.1.0 Sep 1, 2018

#5 in #fsm

Download history 41/week @ 2018-09-04

13 downloads per month

MIT/Apache

18KB
73 lines

SM aims to be a safe, fast and simple state machine library.

  • safe — Rust's type system, ownership model and exhaustive pattern matching prevent you from mis-using your state machines

  • fast — zero runtime overhead, the machine is 100% static, all validation happens at compile-time

  • simple — five traits, and one optional declarative macro, control-flow only, no business logic attached


You might be looking for:

Quick Example

extern crate sm;
use sm::sm;

sm! {
    Lock {
        States { Locked, Unlocked, Broken }

        TurnKey {
            Locked => Unlocked
            Unlocked => Locked
        }

        Break {
            Locked, Unlocked => Broken
        }
    }
}

fn main() {
    use Lock::*;
    let lock = Machine::new(Locked);
    let lock = lock.transition(TurnKey);

    assert_eq!(lock.state(), Unlocked);
}

Dependencies

~140KB