Enum ControlError 

#[non_exhaustive]
pub enum ControlError {
    UnknownDevice(DeviceUid),
    UnknownBay(BayUid),
    UnknownSource(String),
    Unsupported(&'static str),
    InvalidRequest(&'static str),
    NotReported(&'static str),
    Send(SendError),
}

Why a control method did nothing.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

UnknownDevice(DeviceUid)

No device with this identifier has been heard from.

UnknownBay(BayUid)

The device has reported no bay on this port.

UnknownSource(String)

No input bay on the device carries this user-assigned name.

Unsupported(&'static str)

The addressee does not do what was asked of it.

InvalidRequest(&'static str)

The request breaks a rule the device is not guaranteed to check.

Nothing was sent. This is the caller’s to fix, and it is separate from ControlError::Unsupported because the device would have taken the frame: refusing here is this library declining to let a bad value reach hardware that may store it rather than reject it.

NotReported(&'static str)

The device has not reported something the request is assembled from.

Unlike ControlError::Unsupported, the same call may succeed once it has: this says the value is missing, not that it cannot exist.

Send(SendError)

The frame could not be sent.

Trait Implementations

impl Debug for ControlError

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

Formats the value using the given formatter.

impl Display for ControlError

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

Formats the value using the given formatter.

impl Error for ControlError

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 From<SendError> for ControlError

fn from(e: SendError) -> Self

Converts to this type from the input type.