Struct DecodeError 

pub struct DecodeError {
    pub offset: usize,
    pub reason: Reason,
    pub address: Option<u32>,
}

Nibbles that are not an object, and where they stop being one.

offset is in the coordinates of the function that failed: the nibble index into the slice given to crate::decode, crate::prolog’s walks, crate::Real::from_body and crate::Integer::from_nibbles; for an object read from memory (crate::decode_at, a ROM pointer’s target) the nibble index from the start of the object at address. For the budget reasons (Reason::TooManyObjects and the like) the offset is 0: the budget covers the whole decode.

Fields

offset: usize

Nibble offset where decoding failed (see above).

reason: Reason

Why.

address: Option<u32>

The memory address of the object offset counts in, when it was read from memory; None when offset indexes the caller’s slice.

Implementations

impl DecodeError

pub fn new(offset: usize, reason: Reason) -> Self

The error reason at nibble offset of the caller’s slice.

pub fn is_budget(&self) -> bool

Whether a decode budget ran out (the object is too big, not malformed).

Trait Implementations

impl Clone for DecodeError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for DecodeError

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 From<DecodeError> for Error

fn from(e: DecodeError) -> Self

Converts to this type from the input type.

impl PartialEq for DecodeError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DecodeError