Struct CallbackRegistry 

pub struct CallbackRegistry<SM: StateMachine> { /* private fields */ }

Callback registry for state machine events

This structure manages callbacks for state machine events including:

• State entry callbacks: triggered when entering a state
• State exit callbacks: triggered when leaving a state
• Transition callbacks: triggered during state transitions

Implementations

impl<SM: StateMachine> CallbackRegistry<SM>

pub fn new() -> Self

Create a new callback registry

pub fn on_state_entry<F>(&mut self, state: SM::State, callback: F)

where F: Fn(&SM::State) + Send + Sync + 'static,

Register a callback for when entering a specific state

Arguments

• state - The state to monitor for entry
• callback - The callback function to execute

pub fn on_state_exit<F>(&mut self, state: SM::State, callback: F)

where F: Fn(&SM::State) + Send + Sync + 'static,

Register a callback for when exiting a specific state

Arguments

• state - The state to monitor for exit
• callback - The callback function to execute

pub fn on_transition<F>( &mut self, from_state: SM::State, input: SM::Input, callback: F, )

where F: Fn(&SM::State, &SM::Input, &SM::State) + Send + Sync + 'static,

Register a callback for a specific transition

Arguments

• from_state - The source state
• input - The input that triggers the transition
• callback - The callback function to execute

pub fn on_any_state_entry<F>(&mut self, callback: F)

where F: Fn(&SM::State) + Send + Sync + 'static,

Register a global callback that triggers on any state entry

Arguments

• callback - The callback function to execute

pub fn on_any_state_exit<F>(&mut self, callback: F)

where F: Fn(&SM::State) + Send + Sync + 'static,

Register a global callback that triggers on any state exit

Arguments

• callback - The callback function to execute

pub fn on_any_transition<F>(&mut self, callback: F)

where F: Fn(&SM::State, &SM::Input, &SM::State) + Send + Sync + 'static,

Register a global callback that triggers on any transition

Arguments

• callback - The callback function to execute

pub fn clear(&mut self)

Clear all callbacks

pub fn callback_count(&self) -> usize

Get the number of registered callbacks

Trait Implementations

impl<SM: StateMachine> Debug for CallbackRegistry<SM>

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

Formats the value using the given formatter.

impl<SM: StateMachine> Default for CallbackRegistry<SM>

fn default() -> Self

Returns the “default value” for a type.