Struct StateRegistry 

pub struct StateRegistry { /* private fields */ }

Ordered registry of declared state names.

Implementations

impl StateRegistry

pub fn new() -> Self

Creates an empty state registry.

pub fn register(&mut self, name: StateName) -> RuntimeResult<()>

Registers a state name, rejecting duplicates.

pub fn contains(&self, name: &StateName) -> bool

Reports whether a state name is registered.

pub fn len(&self) -> usize

Returns the number of registered state names.

pub fn is_empty(&self) -> bool

Reports whether no states are registered.

pub fn list(&self) -> &[StateName]

Returns state names in registration order.

Trait Implementations

impl Debug for StateRegistry

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

Formats the value using the given formatter.

impl Default for StateRegistry

fn default() -> StateRegistry

Returns the “default value” for a type.