Enum LeopardMode 

#[non_exhaustive]
pub enum LeopardMode {
    Disabled,
    AsNeeded,
    PreferGF16,
    PreferLeopard,
}

Controls optional automatic selection of a Leopard codec when the requested CodecFamily is Classic.

Auto-selection only takes effect on a byte-oriented field (where size_of::<Field::Elem>() == 1, i.e. the GF(2^8) field the Leopard codecs are built on); on any other field the mode is ignored and the codec stays Classic. When the caller sets an explicit non-Classic codec_family, this mode is likewise ignored — the explicit family wins.

The resolution, as a function of total = data + parity shards, mirrors the klauspost/reedsolomon New() behaviour:

total	AsNeeded	PreferLeopard	PreferGF16
≤ 256	Classic	LeopardGF8¹	LeopardGF16
257..=65536	LeopardGF16	LeopardGF16	LeopardGF16

¹ PreferLeopard selects LeopardGF8 only when total ≤ 256 and parity ≤ 128; otherwise it falls back to LeopardGF16.

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.

Disabled

Never auto-select Leopard. The codec behaves exactly as an explicit CodecFamily::Classic construction — byte-for-byte identical to releases before auto-activation existed. This is the default.

AsNeeded

Use Classic while it can represent the configuration (total ≤ 256), and automatically switch to LeopardGF16 once the shard count exceeds what GF(2^8) can address.

PreferGF16

Always use LeopardGF16 (for any supported shard count up to 65536).

PreferLeopard

Prefer a Leopard codec whenever possible: LeopardGF8 for small byte-friendly configurations (total ≤ 256 and parity ≤ 128), otherwise LeopardGF16.

Trait Implementations

impl Clone for LeopardMode

fn clone(&self) -> LeopardMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LeopardMode

impl Debug for LeopardMode

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

Formats the value using the given formatter.

impl Default for LeopardMode

fn default() -> LeopardMode

Returns the “default value” for a type.

impl Eq for LeopardMode

impl PartialEq for LeopardMode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LeopardMode