Enum Method 

pub enum Method {
    Autoregressive,
    Vanilla,
    Medusa,
    Eagle2,
    Eagle3,
}

Identifier for which Speculative Decoding algorithm to use.

Variants

Autoregressive

Plain autoregressive — no speculation, useful as a baseline.

Vanilla

Leviathan et al. 2023 — separate draft model + rejection sampling.

Medusa

Cai et al. 2024 — multiple decoding heads, no separate draft model.

Eagle2

Li et al. 2024 — feature-level draft + dynamic tree.

Eagle3

Li et al. 2025 — multi-layer feature draft.

Implementations

impl Method

pub const fn name(self) -> &'static str

Human-readable name (matches the published paper convention).

pub const fn needs_draft_model(self) -> bool

Whether this method requires a separate draft / heads asset loaded alongside the target. Medusa counts even though its heads aren’t a “draft model” in the Leviathan sense — they’re still a separate artifact that must be attached.

Trait Implementations

impl Clone for Method

fn clone(&self) -> Method

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Method

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Method

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Method

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Method

fn eq(&self, other: &Method) -> 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 Serialize for Method

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Method

impl Eq for Method

impl StructuralPartialEq for Method