Struct AdaptiveKey 

pub struct AdaptiveKey {
    pub default: KeyOutput,
    pub rules: [AltRepeatRule; 8],
}

Per-site adaptive key.

Holds a default output and a table of last-output → emit rules.

Fields

default: KeyOutput

Output when no rule matches (or history is empty).

rules: [AltRepeatRule; 8]

Sparse last-output → emit mappings for this key site.

Implementations

impl AdaptiveKey

pub const EMPTY: AdaptiveKey

Empty adaptive key (no-op default, no rules).

pub const fn new(default: KeyOutput, rules: [AltRepeatRule; 8]) -> AdaptiveKey

Constructs an adaptive key from a default and a padded rule array.

pub fn lookup(&self, prev: &KeyOutput) -> Option<KeyOutput>

Looks up prev in this key’s rule table.

Trait Implementations

impl Clone for AdaptiveKey

fn clone(&self) -> AdaptiveKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AdaptiveKey

impl Debug for AdaptiveKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AdaptiveKey

fn deserialize<__D>( __deserializer: __D, ) -> Result<AdaptiveKey, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for AdaptiveKey

fn eq(&self, other: &AdaptiveKey) -> 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 AdaptiveKey