Struct StateMachine 

pub struct StateMachine { /* private fields */ }

Minimal state machine based on explicit transitions.

Implementations

impl StateMachine

pub fn new(initial: StateName) -> Self

Creates a state machine without registered transitions.

pub fn current(&self) -> &StateName

Returns the current state.

pub fn add_transition( &mut self, transition: StateTransition, ) -> RuntimeResult<()>

Registers one deterministic transition, rejecting duplicate source/event pairs.

pub fn can_apply(&self, event: &EventName) -> bool

Reports whether event can be applied from the current state.

pub fn apply(&mut self, event: &EventName) -> RuntimeResult<&StateName>

Applies event and returns the new current state.

pub fn transitions(&self) -> &[StateTransition]

Returns all transitions in registration order.

Trait Implementations

impl Clone for StateMachine

fn clone(&self) -> StateMachine

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StateMachine

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

Formats the value using the given formatter.