Enum DecodeError 

pub enum DecodeError {
    Truncated {
        needed: usize,
        available: usize,
    },
    ArrayTooLarge {
        kind: &'static str,
        count: usize,
        limit: usize,
    },
    CountExceedsBuffer {
        count: usize,
        min_bytes: usize,
        available: usize,
    },
    MessageTooLarge {
        total: usize,
        limit: usize,
    },
    UnexpectedSegment {
        flags: u8,
    },
    SegmentInterrupted {
        expected: u8,
        got: u8,
    },
    SegmentCommandMismatch {
        expected: u8,
        got: u8,
    },
    UnknownTypeTag(u8),
    UnresolvedTypeId(u16),
    UnknownUnionSelector {
        selector: usize,
        len: usize,
    },
    Malformed(&'static str),
}

Everything that can go wrong decoding a PVA frame or a PVD value.

Replaces the bare None the decoders used to return, which could not distinguish “buffer ran out” from “this array is implausibly large”.

Variants

Truncated

The buffer ended before the field did.

Fields

needed: usize

available: usize

ArrayTooLarge

An array’s element count exceeds the configured DecodeLimits entry.

Fields

kind: &'static str

count: usize

limit: usize

CountExceedsBuffer

An array’s element count cannot fit in the bytes that remain, so the count itself is corrupt. Caught before allocating.

Fields

count: usize

min_bytes: usize

available: usize

MessageTooLarge

Reassembly exceeded SegmentReassembler’s byte cap.

Fields

total: usize

limit: usize

UnexpectedSegment

A middle or last segment arrived with no message in progress, or a first segment arrived while one was already in progress.

Fields

flags: u8

SegmentInterrupted

An unsegmented application message arrived mid-reassembly.

Fields

expected: u8

got: u8

SegmentCommandMismatch

Segments of one message disagree on command byte or direction.

Fields

expected: u8

got: u8

UnknownTypeTag(u8)

An introspection tag byte we do not recognise.

UnresolvedTypeId(u16)

A 0xFE “only id” reference with no matching cached type. Usually means the PvdDecoder was not reused across the connection.

UnknownUnionSelector

A union selector outside the union’s field list.

Fields

selector: usize

len: usize

Malformed(&'static str)

Structurally invalid input that needs no parameters to explain.

Trait Implementations

impl Clone for DecodeError

fn clone(&self) -> DecodeError

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<(), Error>

Formats the value using the given formatter.

impl Display for DecodeError

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

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 PvGetError

fn from(value: DecodeError) -> Self

Converts to this type from the input type.

impl PartialEq for DecodeError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DecodeError