Enum OrUserError 

pub enum OrUserError<T, U> {
    Base(T),
    User(U),
}

A value that may be an error or a user-generated error.

Variants

Base(T)

An error.

User(U)

A user-generated error.

Implementations

impl<T, U> OrUserError<T, U>

pub fn convert_with<E, F>(self, f: F) -> E

where T: Into<E>, F: FnOnce(U) -> E,

Converts this error into another error. The new error type E must implement From<T>. Additionally takes a closure allowing the user to decide how to convert the user error.

pub fn convert<E>(self) -> E

where T: Into<E>, U: Into<E>,

Converts this error into another error. The new error type E must implement From<T> and From<U>.

impl<T> OrUserError<T, Infallible>

pub fn into_base(self) -> T

Converts this error to T (the base error variant), given that U (the user error variant) is Infallible.

impl<U> OrUserError<Infallible, U>

pub fn into_user(self) -> U

Converts this error to U (the user error variant), given that T (the base error variant) is Infallible.

Trait Implementations

impl<T: Debug, U: Debug> Debug for OrUserError<T, U>

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

Formats the value using the given formatter.

impl<T, U> Display for OrUserError<T, U>

where T: Display, U: Display,

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

Formats the value using the given formatter.

impl<T, U> Error for OrUserError<T, U>

where T: Error, Self: Debug + Display,

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<T, U> From<T> for OrUserError<T, U>

fn from(err: T) -> Self

Converts to this type from the input type.