Struct StructureFingerprint 

pub struct StructureFingerprint {
    pub hash: String,
    pub nodes: u32,
}

A subtree’s structural fingerprint: what the fold covered, and how much of it.

Computed host-side in one walk, so a rule does not pay a per-node boundary crossing to inspect a tree’s shape — the exact cost invariant 3 (docs/architecture.md §4) exists to prevent. See NodeArena::structure_fingerprint for the normalization contract.

Fields

hash: String

blake3 of the normalized fold, lowercase hex.

nodes: u32

How many nodes the fold covered. Exact, not approximate: it is the thresholding input, so a rule knows whether a match is trivially small without a second traversal.

Trait Implementations

impl Clone for StructureFingerprint

fn clone(&self) -> StructureFingerprint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StructureFingerprint

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

Formats the value using the given formatter.

impl Eq for StructureFingerprint

impl PartialEq for StructureFingerprint

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for StructureFingerprint