Enum DecodeError 

#[non_exhaustive]
pub enum DecodeError {
    Expected(&'static str),
    UnknownKey(String),
    DuplicateKey(String),
    MissingField(&'static str),
    Source(SourceError),
}

Why a typed target refused what it was given.

Non-exhaustive, so a target can add refusals without a breaking change.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Expected(&'static str)

The ciphertext holds something other than the named kind.

UnknownKey(String)

A map holds a key the target has no field for.

DuplicateKey(String)

A map holds the same key twice.

MissingField(&'static str)

A map is missing the named field.

Source(SourceError)

The source stopped the walk (only reachable through a passthrough).

Implementations

impl DecodeError

pub fn unknown_key(key: &str) -> Self

A map holds key, which the target has no field for.

pub fn duplicate_key(key: &str) -> Self

A map holds key twice.

Trait Implementations

impl Debug for DecodeError

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

Formats the value using the given formatter.

impl Display for DecodeError

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

Formats the value using the given formatter.

impl Error for DecodeError

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 Error for DecodeError

fn source(error: SourceError) -> Self

Wrap a failure that came from the source, not the sink.