Struct OpaqueError

pub struct OpaqueError(/* private fields */);

A type-erased error type that can be used as a trait object.

Note this type is not intended to be used directly, it is used by rama to hide the concrete error type.

See the module level documentation for more information.

Implementations

impl OpaqueError

pub fn from_std(error: impl Error + Send + Sync + 'static) -> Self

create an OpaqueError from an std error

pub fn from_display(msg: impl Display + Debug + Send + Sync + 'static) -> Self

create an OpaqueError from a display object

pub fn from_boxed(inner: BoxError) -> Self

create an OpaqueError from a boxed error

pub fn is<T>(&self) -> bool

where T: Error + 'static,

Returns true if the underlying error is of type T.

pub fn into_boxed(self) -> BoxError

Consumes the OpaqueError and returns it as a BoxError.

pub fn downcast<T>(self) -> Result<T, Self>

where T: Error + 'static,

Attempts to downcast the error to the concrete type T.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: Error + 'static,

Attempts to downcast the error to a shared reference of the concrete type T.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T>

where T: Error + 'static,

Attempts to downcast the error to the exclusive reference of the concrete type T.

Trait Implementations

impl Debug for OpaqueError

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

Formats the value using the given formatter.

impl Display for OpaqueError

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

Formats the value using the given formatter.

impl Error for OpaqueError

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<Box<dyn Error + Send + Sync>> for OpaqueError

fn from(error: BoxError) -> Self

Converts to this type from the input type.