Struct capnp::Error

pub struct Error {
    pub kind: ErrorKind,
    pub extra: String,
}

Describes an arbitrary error that prevented an operation from completing.

Fields

kind: ErrorKind

The general kind of the error. Code that decides how to respond to an error should read only this field in making its decision.

extra: String

Extra context about error

Implementations

impl Error

pub fn write_fmt(&mut self, fmt: Arguments<'_>)

Writes to the extra field. Does nothing if the “alloc” feature is not enabled. This is intended to be used with the write!() macro from core.

pub fn failed(description: String) -> Self

pub fn from_kind(kind: ErrorKind) -> Self

pub fn overloaded(description: String) -> Self

pub fn disconnected(description: String) -> Self

pub fn unimplemented(description: String) -> Self

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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

The lower-level source of this error, if any.

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<Error> for Error

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<FromUtf8Error> for Error

fn from(err: FromUtf8Error) -> Self

Converts to this type from the input type.

impl From<NotInSchema> for Error

fn from(e: NotInSchema) -> Self

Converts to this type from the input type.

impl From<Utf8Error> for Error

fn from(err: Utf8Error) -> Self

Converts to this type from the input type.