Enum DeltaCorruption 

#[non_exhaustive]
pub enum DeltaCorruption {
    BaseLenMismatch {
        declared: u32,
        actual: usize,
    },
    ReservedOpcodeBits(u8),
    ZeroOpcode,
    ZeroLengthCopy,
    CopyPastBase {
        offset: u32,
        length: u16,
        base_len: usize,
    },
    ResultLenOverrun {
        emitted: usize,
        requested: usize,
        result_len: usize,
    },
    ResultLenUnderrun {
        expected: usize,
        actual: usize,
    },
}

The specific kind of structural corruption a v1 delta stream failed on (MKIT-13), carried by MkitError::DeltaCorrupt. #[non_exhaustive] so a future delta-stream kind (v2, say) can add a corruption variant without that being a breaking change for downstream matches.

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.

BaseLenMismatch

The stream’s declared base_len header field does not match the actual length of the base object passed to decode.

Fields

declared: u32

actual: usize

ReservedOpcodeBits(u8)

A COPY opcode had one or more of its reserved low 7 bits set.

ZeroOpcode

The reserved 0x00 opcode appeared in the instruction stream.

ZeroLengthCopy

A COPY opcode declared a zero-length copy, which SPEC-DELTA §3 forbids (length MUST be >= 1).

CopyPastBase

A COPY opcode’s offset + length exceeds the base length (or overflows while computing it), reading past the end of the base.

Fields

offset: u32

length: u16

base_len: usize

ResultLenOverrun

Applying the next instruction would emit more bytes than the stream’s declared result_len.

Fields

emitted: usize

requested: usize

result_len: usize

ResultLenUnderrun

The instruction stream ended having emitted fewer bytes than the declared result_len.

Fields

expected: usize

actual: usize

Trait Implementations

impl Clone for DeltaCorruption

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 DeltaCorruption

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

Formats the value using the given formatter.

impl Display for DeltaCorruption

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

Formats the value using the given formatter.

impl Eq for DeltaCorruption

impl Error for DeltaCorruption

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 PartialEq for DeltaCorruption

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DeltaCorruption