Enum InvalidControlFunction

pub enum InvalidControlFunction {
    InvalidAsciiError,
    InvalidFunctionValueError,
    InvalidIntermediateByteError,
    InvalidPrivateUseError,
}

Possible errors when specifying a custom control function.

It is possible to define custom control functions, so called private-use or experimental functions. These private-use functions still need to follow some rules. If they violate the rules, one of these variants is returned as an error.

Variants

InvalidAsciiError

All control function values must be valid ASCII.

InvalidFunctionValueError

All control functions must have a one- or two-byte function identifier.

InvalidIntermediateByteError

If the function has an intermediate byte, it must by 02 / 00. All other intermediate bytes are invalid.

InvalidPrivateUseError

All private-use functions must be in the range 07 / 00 to 07 / 15.

Trait Implementations

impl Debug for InvalidControlFunction

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

Formats the value using the given formatter.

impl Display for InvalidControlFunction

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

Formats the value using the given formatter.

impl Error for InvalidControlFunction

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.