Struct PatternFingerprint 

pub struct PatternFingerprint(/* private fields */);

Pattern fingerprint type — re-exported from sdivi-patterns for WASM embedders. A keyed blake3 digest representing the structural shape of a pattern.

Fingerprints are computed from the node_kind of a [sdivi_parsing::feature_record::PatternHint], producing a stable, content-independent shape identifier. Two pattern instances with the same node_kind produce the same PatternFingerprint.

Serialized as a 64-character lowercase hex string for JSON key compatibility.

Examples

use sdivi_patterns::fingerprint::fingerprint_node_kind;

let fp1 = fingerprint_node_kind("try_expression");
let fp2 = fingerprint_node_kind("try_expression");
let fp3 = fingerprint_node_kind("match_expression");

assert_eq!(fp1, fp2);
assert_ne!(fp1, fp3);
assert_eq!(fp1.to_hex().len(), 64);

Implementations

impl PatternFingerprint

pub fn from_bytes(bytes: [u8; 32]) -> PatternFingerprint

Constructs a PatternFingerprint from raw digest bytes.

pub fn from_hex(hex: &str) -> Option<PatternFingerprint>

Parses a PatternFingerprint from a 64-character lowercase hex string.

Returns None if the string is not exactly 64 hex characters.

Examples

use sdivi_patterns::fingerprint::{fingerprint_node_kind, PatternFingerprint};

let fp = fingerprint_node_kind("try_expression");
let hex = fp.to_hex();
let parsed = PatternFingerprint::from_hex(&hex).unwrap();
assert_eq!(fp, parsed);

pub fn as_bytes(&self) -> &[u8; 32]

Returns the raw digest bytes.

pub fn to_hex(&self) -> String

Returns a 64-character lowercase hex string.

Examples

use sdivi_patterns::fingerprint::fingerprint_node_kind;

let fp = fingerprint_node_kind("try_expression");
assert_eq!(fp.to_hex().len(), 64);

Trait Implementations

impl Clone for PatternFingerprint

fn clone(&self) -> PatternFingerprint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatternFingerprint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PatternFingerprint

fn deserialize<D>( d: D, ) -> Result<PatternFingerprint, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for PatternFingerprint

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

where __H: Hasher,

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 PatternFingerprint

fn cmp(&self, other: &PatternFingerprint) -> 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 PatternFingerprint

fn eq(&self, other: &PatternFingerprint) -> 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 PartialOrd for PatternFingerprint

fn partial_cmp(&self, other: &PatternFingerprint) -> 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 Serialize for PatternFingerprint

fn serialize<S>( &self, s: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for PatternFingerprint

impl Eq for PatternFingerprint

impl StructuralPartialEq for PatternFingerprint