Enum DeltaError 

pub enum DeltaError {
    Empty,
    InvalidOpcode(u8),
    Truncated {
        opcode: u8,
        needed: usize,
        got: usize,
    },
    InvalidInstruction(u8),
    CopyOutOfRange {
        base_offset: u64,
        length: u32,
        base_len: usize,
    },
    InsertOutOfRange {
        declared: u32,
        remaining: usize,
    },
    TargetLengthMismatch {
        side: MismatchSide,
        declared: usize,
        reconstructed: usize,
    },
    ChecksumMismatch {
        side: MismatchSide,
    },
    Decompression(String),
    ZstdDisabled,
}

Errors produced while applying a delta.

compute_delta is total and cannot fail; only apply_delta validates.

Variants

Empty

The delta was empty (no opcode byte).

InvalidOpcode(u8)

The top-level opcode is not one of 0x00..=0x03.

Truncated

A header or record ended before the format requires.

Fields

opcode: u8

The encoding opcode being decoded.

needed: usize

Minimum bytes the format requires at this point.

got: usize

Bytes actually available.

InvalidInstruction(u8)

An instruction byte inside a 0x02 stream is not 0x01/0x02.

CopyOutOfRange

A Copy instruction referenced bytes outside the base.

Fields

base_offset: u64

Declared start offset into the base.

length: u32

Declared copy length.

base_len: usize

Actual base length.

InsertOutOfRange

An Insert instruction declared more data than the delta holds.

Fields

declared: u32

Declared insert length.

remaining: usize

Bytes remaining in the delta.

TargetLengthMismatch

The reconstructed output did not match the declared target length.

Fields

side: MismatchSide

Which declared length was contradicted.

declared: usize

The length declared in the delta.

reconstructed: usize

The length actually reconstructed.

ChecksumMismatch

A blake3 prefix checksum of a 0x03 binary delta did not match.

Fields

side: MismatchSide

Which half failed (base or reconstructed target).

Decompression(String)

The embedded Zstd frame failed to decompress.

ZstdDisabled

A 0x03 binary delta was received by a build compiled without the zstd feature; it cannot be decoded.

Trait Implementations

impl Clone for DeltaError

fn clone(&self) -> DeltaError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DeltaError

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

Formats the value using the given formatter.

impl Display for DeltaError

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

Formats the value using the given formatter.

impl Eq for DeltaError

impl Error for DeltaError

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 DeltaError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DeltaError