Enum der::ErrorKind

#[non_exhaustive]pub enum ErrorKind {
    Failed,
    Length {
        tag: Tag,
    },
    Noncanonical,
    Oid,
    Overflow,
    Overlength,
    TrailingData {
        decoded: Length,
        remaining: Length,
    },
    Truncated,
    Underlength {
        expected: Length,
        actual: Length,
    },
    UnexpectedTag {
        expected: Option<Tag>,
        actual: Tag,
    },
    UnknownTag {
        byte: u8,
    },
    Value {
        tag: Tag,
    },
}

Error type.

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.

Failed

Operation failed due to previous error

Length

Incorrect length for a given field

Fields of Length

tag: Tag

Tag type of the value being decoded

Noncanonical

Message is not canonically encoded

Oid

Malformed OID

Overflow

Integer overflow occurred (library bug!)

Overlength

Message is longer than this library's internal limits support

TrailingData

Undecoded trailing data at end of message

Fields of TrailingData

decoded: Length

Length of the decoded data

remaining: Length

Total length of the remaining data left in the buffer

Truncated

Unexpected end-of-message/nested field when decoding

Underlength

Encoded message is shorter than the expected length (i.e. an Encodable impl on a particular type has a buggy encoded_len)

Fields of Underlength

expected: Length

Expected length

actual: Length

Actual length

UnexpectedTag

Unexpected tag

Fields of UnexpectedTag

expected: Option<Tag>

Tag the decoder was expecting (if there is a single such tag).

None if multiple tags are expected/allowed, but the actual tag does not match any of them.

actual: Tag

Actual tag encountered in the message

UnknownTag

Unknown/unsupported tag

Fields of UnknownTag

byte: u8

Raw byte value of the tag

Value

Unexpected value

Fields of Value

tag: Tag

Tag of the unexpected value

Implementations

impl ErrorKind

pub fn at(self, position: Length) -> Error

Annotate an ErrorKind with context about where it occurred, returning an error.

Trait Implementations

impl Clone for ErrorKind

pub fn clone(&self) -> ErrorKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for ErrorKind

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Display for ErrorKind

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

Formats the value using the given formatter.

impl Eq for ErrorKind

impl Error for ErrorKind

pub fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

pub fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

pub fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<ErrorKind> for Error

pub fn from(kind: ErrorKind) -> Error

Performs the conversion.

impl PartialEq<ErrorKind> for ErrorKind

pub fn eq(&self, other: &ErrorKind) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralEq for ErrorKind

impl StructuralPartialEq for ErrorKind