Struct InputStateMachine 

pub struct InputStateMachine;

Validates and applies lifecycle state transitions on InputState.

Implementations

impl InputStateMachine

pub fn is_valid_transition( from: InputLifecycleState, to: InputLifecycleState, ) -> bool

Check if a transition from from to to is valid per §15.

pub fn transition( state: &mut InputState, to: InputLifecycleState, reason: Option<String>, ) -> Result<(), InputStateMachineError>

Transition the input state, recording history.

Returns an error if the transition is invalid or the state is terminal.

pub fn set_terminal_outcome( state: &mut InputState, outcome: InputTerminalOutcome, )

Set the terminal outcome explicitly (for Superseded/Coalesced which need extra data).

pub fn abandon( state: &mut InputState, reason: InputAbandonReason, ) -> Result<(), InputStateMachineError>

Transition to Abandoned with a specific reason.