Enum ReadError

pub enum ReadError<Decode, Read = Error> {
    Read(Read),
    Decode(Decode),
}

Returned when either reading or decoding fails.

Note that the Read type param only defaults to std::io::Error with std feature enabled.

Variants

Read(Read)

Reading from a reader failed.

Decode(Decode)

Decoding the value failed.

Implementations

impl<D, R> ReadError<D, R>

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

where D: Into<E>, R: Into<E>,

Converts the inner errors to another type E.

pub fn map_read<E, F>(self, map: F) -> ReadError<D, E>

where F: FnOnce(R) -> E,

Converts the read error using a closure.

This is analogous to Result::map/Result::map_err and leaves Decode intact.

pub fn map_decode<E, F>(self, map: F) -> ReadError<E, R>

where F: FnOnce(D) -> E,

Converts the decode error using a closure.

This is analogous to Result::map/Result::map_err and leaves Read intact.

impl<E> ReadError<E, Infallible>

pub fn into_decode(self) -> E

Statically proves that reading is infallible and converts to decode error.

impl<E> ReadError<Infallible, E>

pub fn into_read(self) -> E

Statically proves that decoding is infallible and converts to read error.

Trait Implementations

impl<Decode: Clone, Read: Clone> Clone for ReadError<Decode, Read>

fn clone(&self) -> ReadError<Decode, Read>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Decode: Debug, Read: Debug> Debug for ReadError<Decode, Read>

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

Formats the value using the given formatter.

impl<D, R> Display for ReadError<D, R>

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

Formats the value using the given formatter.

impl<D: Error + 'static, R: Error + 'static> Error for ReadError<D, R>

Available on crate feature std only.

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<E: Error + Send + Sync + 'static> From<ReadError<E>> for Error

Available on crate feature std only.

fn from(error: ReadError<E, Error>) -> Self

Converts to this type from the input type.

impl From<ReadError<Infallible, Infallible>> for Infallible

fn from(error: ReadError<Infallible, Infallible>) -> Self

Converts to this type from the input type.

impl<Decode: Hash, Read: Hash> Hash for ReadError<Decode, Read>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<Decode: PartialEq, Read: PartialEq> PartialEq for ReadError<Decode, Read>

fn eq(&self, other: &ReadError<Decode, Read>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Decode: Copy, Read: Copy> Copy for ReadError<Decode, Read>

impl<Decode: Eq, Read: Eq> Eq for ReadError<Decode, Read>

impl<Decode, Read> StructuralPartialEq for ReadError<Decode, Read>