Enum DecodeFixedLengthBytesError 

pub enum DecodeFixedLengthBytesError {
    InvalidChar(InvalidCharError),
    InvalidLength(InvalidLengthError),
}

Error returned when hex decoding bytes whose length is known at compile time.

This error differs from DecodeVariableLengthBytesError in that the number of bytes is known at compile time - e.g. when decoding to an array of bytes.

Variants

InvalidChar(InvalidCharError)

Non-hexadecimal character.

InvalidLength(InvalidLengthError)

Tried to parse fixed-length hash from a string with the wrong length.

Implementations

impl DecodeFixedLengthBytesError

pub fn offset(self, by_bytes: usize) -> Self

Adds by_bytes to all character positions stored inside.

If you’re parsing a larger string that consists of multiple hex sub-strings and want to return InvalidCharError you may need to use this function so that the callers of your parsing function can tell the exact position where decoding failed relative to the start of the string passed into your parsing function.

Note that this function has the standard Rust overflow behavior because you should only ever pass in the position of the parsed hex string relative to the start of the entire input. In that case overflow is impossible.

This method consumes and returns self so that calling it inside a closure passed into Result::map_err is convenient.

Trait Implementations

impl Clone for DecodeFixedLengthBytesError

fn clone(&self) -> DecodeFixedLengthBytesError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DecodeFixedLengthBytesError

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

Formats the value using the given formatter.

impl Display for DecodeFixedLengthBytesError

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

Formats the value using the given formatter.

impl Error for DecodeFixedLengthBytesError

Available on crate feature std, or crate feature newer-rust-version and rust_version=>= 1.81.0 only.

fn source(&self) -> Option<&(dyn StdError + '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<Infallible> for DecodeFixedLengthBytesError

fn from(never: Infallible) -> Self

Converts to this type from the input type.

impl From<InvalidCharError> for DecodeFixedLengthBytesError

fn from(e: InvalidCharError) -> Self

Converts to this type from the input type.

impl From<InvalidLengthError> for DecodeFixedLengthBytesError

fn from(e: InvalidLengthError) -> Self

Converts to this type from the input type.

impl PartialEq for DecodeFixedLengthBytesError

fn eq(&self, other: &DecodeFixedLengthBytesError) -> 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 Eq for DecodeFixedLengthBytesError

impl StructuralPartialEq for DecodeFixedLengthBytesError