Enum FastStateMachineError 

pub enum FastStateMachineError {
    UnknownState {
        state: usize,
    },
    UnknownTransition {
        source_state: usize,
        event: usize,
    },
    CasConflict {
        attempts: u32,
    },
}

Error returned when applying an event through a crate::FastStateMachine.

Variants

UnknownState

The current state code is not configured in the state machine.

Fields

state: usize

The unregistered current state code.

UnknownTransition

No transition is configured for the (state, event) pair.

Fields

source_state: usize

The source state code.

event: usize

The triggering event code.

CasConflict

CAS conflicts were exhausted before the update could be installed.

Fields

attempts: u32

The total number of CAS attempts executed.

Trait Implementations

impl Clone for FastStateMachineError

fn clone(&self) -> FastStateMachineError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FastStateMachineError

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

Formats the value using the given formatter.

impl Display for FastStateMachineError

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

Formats the value using the given formatter.

impl Error for FastStateMachineError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for FastStateMachineError

fn eq(&self, other: &FastStateMachineError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FastStateMachineError

impl Eq for FastStateMachineError

impl StructuralPartialEq for FastStateMachineError