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

Returned when either reading or decoding fails.

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

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Read(Read)

Reading from a reader failed.

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Decode(Decode)

Decoding the value failed.

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

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pub fn convert_either<E>(self) -> E
where D: Into<E>, R: Into<E>,

Converts the inner errors to another type E.

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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.

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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.

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impl<E> ReadError<E, Infallible>

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pub fn into_decode(self) -> E

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

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impl<E> ReadError<Infallible, E>

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pub fn into_read(self) -> E

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

Trait Implementations§

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

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<Decode: Debug, Read: Debug> Debug for ReadError<Decode, Read>

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

Formats the value using the given formatter. Read more
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impl<D, R> Display for ReadError<D, R>

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

Formats the value using the given formatter. Read more
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impl<D: Error + 'static, R: Error + 'static> Error for ReadError<D, R>

Available on crate feature std only.
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fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any. Read more
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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
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fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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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. Read more
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impl<E: Error + Send + Sync + 'static> From<ReadError<E>> for Error

Available on crate feature std only.
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fn from(error: ReadError<E, Error>) -> Self

Converts to this type from the input type.
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impl From<ReadError<Infallible, Infallible>> for Infallible

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

Converts to this type from the input type.
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impl<Decode: Hash, Read: Hash> Hash for ReadError<Decode, Read>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<Decode: PartialEq, Read: PartialEq> PartialEq for ReadError<Decode, Read>

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<Decode: Copy, Read: Copy> Copy for ReadError<Decode, Read>

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

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

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

Auto Trait Implementations§

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impl<Decode, Read> RefUnwindSafe for ReadError<Decode, Read>
where Decode: RefUnwindSafe, Read: RefUnwindSafe,

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impl<Decode, Read> Send for ReadError<Decode, Read>
where Decode: Send, Read: Send,

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impl<Decode, Read> Sync for ReadError<Decode, Read>
where Decode: Sync, Read: Sync,

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impl<Decode, Read> Unpin for ReadError<Decode, Read>
where Decode: Unpin, Read: Unpin,

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impl<Decode, Read> UnwindSafe for ReadError<Decode, Read>
where Decode: UnwindSafe, Read: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.