Enum FeatureKind 

pub enum FeatureKind {
    StatementWindow,
    Subtree,
    Cfg,
    ApiCallSequence,
    ApiCallMultiset,
}

The kind of a persisted feature hash.

These name the hash-valued feature families the candidate index keys on. Unlike a stable identifier, a feature hash is only meaningful within one FEATURE_SCHEMA_VERSION; the persistence layer stores that version alongside the hash so hashes from incompatible recipes never merge.

The CharacteristicVector is deliberately absent: it is a count vector, not a single hash, and is persisted as scalars rather than an index key.

Variants

StatementWindow

A WindowFeature: a fixed-length run of adjacent statements.

Subtree

A SubtreeFeature: a Merkle hash over an IR subtree.

Cfg

A CfgFeature: the approximate control-flow op sequence.

ApiCallSequence

An ApiCallFeature::sequence_hash: callee names in source order.

ApiCallMultiset

An ApiCallFeature::multiset_hash: the order-independent callee set.

Implementations

impl FeatureKind

pub const ALL: [Self; 5]

Every kind, in declaration order.

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

The stable snake-case name used in storage and reports.

pub fn from_name(name: &str) -> Option<Self>

Parse a name back into its kind.

Trait Implementations

impl Clone for FeatureKind

fn clone(&self) -> FeatureKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FeatureKind

impl Debug for FeatureKind

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

Formats the value using the given formatter.

impl Eq for FeatureKind

impl Hash for FeatureKind

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 Ord for FeatureKind

fn cmp(&self, other: &FeatureKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FeatureKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for FeatureKind

fn partial_cmp(&self, other: &FeatureKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for FeatureKind