Struct FsmBuilder 

pub struct FsmBuilder<S: Clone + Eq + Hash + 'static, D: Clone + 'static, M: 'static> { /* private fields */ }

Builder for a closure-driven FSM.

When(Idle) { case Go => goto(Running) using d+1 }
When(Running) { case Stop => goto(Idle) }
WhenUnhandled { case _ => stay() }
OnTransition { case Idle -> Running => log("starting") }
OnTermination { case _ => log("done") }

Each when_state / whenever handler returns:

• Some(FsmTransition) to transition.
• None to fall through to whenever, then to drop the message.

Implementations

impl<S, D, M> FsmBuilder<S, D, M>

where S: Clone + Eq + Hash + 'static, D: Clone + 'static, M: 'static,

pub fn new() -> Self

pub fn start_with(self, state: S, data: D) -> Self

pub fn when_state<F>(self, state: S, handler: F) -> Self

where F: FnMut(&S, &D, M) -> Option<FsmTransition<S, D>> + Send + 'static,

Register a per-state handler. Overrides any existing handler for the same state.

pub fn whenever<F>(self, handler: F) -> Self

where F: FnMut(&S, &D, M) -> Option<FsmTransition<S, D>> + Send + 'static,

Fallback handler. Runs when the per-state handler returns None.

pub fn on_transition<F>(self, hook: F) -> Self

where F: FnMut(&S, &S) + Send + 'static,

pub fn on_termination<F>(self, hook: F) -> Self

where F: FnMut(&S, &D) + Send + 'static,

pub fn build(self) -> Fsm<S, D, M>

Trait Implementations

impl<S, D, M> Default for FsmBuilder<S, D, M>

where S: Clone + Eq + Hash + 'static, D: Clone + 'static, M: 'static,

fn default() -> Self

Returns the “default value” for a type.