Enum ContentChecksum 

pub enum ContentChecksum {
    None,
    EmitOnly,
    Verify,
}

How the decoder treats a frame’s optional XXH64 content checksum (RFC 8878 Content_Checksum_flag). The XXH64 pass over the decompressed output is a measurable share of decode time, so it is made skippable.

use structured_zstd::decoding::{ContentChecksum, FrameDecoder};
let mut decoder = FrameDecoder::new();
decoder.set_content_checksum(ContentChecksum::Verify);

Variants

None

Skip the XXH64 pass entirely: no compute, no verify. get_calculated_checksum() returns None.

EmitOnly

Compute the checksum and expose it via the accessors, but do not error on a mismatch. This is the default and matches the historical behaviour (callers verify manually if they wish).

Verify

Compute the checksum and compare it against the frame’s stored value; a disagreement fails the decode with FrameDecoderError::ChecksumMismatch. Without the hash feature there is no way to compute a digest, so Verify cannot detect a mismatch and behaves like None.

Trait Implementations

impl Clone for ContentChecksum

fn clone(&self) -> ContentChecksum

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ContentChecksum

impl Debug for ContentChecksum

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

Formats the value using the given formatter.

impl Default for ContentChecksum

fn default() -> ContentChecksum

Returns the “default value” for a type.

impl Eq for ContentChecksum

impl PartialEq for ContentChecksum

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ContentChecksum