Struct Measure 

pub struct Measure { /* private fields */ }

Node similarity measurement calculator.

This struct calculates the content, child list and matched child list distance between nodes using the Q-gram distance algorithm.

Implementations

impl Measure

pub fn new() -> Self

Creates a new Measure instance.

pub fn get_distance(&mut self, a: Option<&NodeRef>, b: Option<&NodeRef>) -> f64

Returns content distance between nodes.

The distance is normalized between 0.0 and 1.0 (MAX_DIST). Returns 1.0 if node types are incompatible (element vs text).

pub fn string_dist_str(&mut self, a: &str, b: &str) -> i32

Calculates string distance using Q-gram algorithm.

pub fn string_dist_chars(&mut self, a: &[char], b: &[char]) -> i32

Calculates string distance for char arrays using Q-gram algorithm.

pub fn child_list_distance(&mut self, a: &NodeRef, b: &NodeRef) -> f64

Calculates child list distance between nodes.

This compares children by their content hashes to measure structural similarity. Returns ZERO_CHILDREN_MATCH (1.0) if both nodes have no children.

pub fn matched_child_list_distance( &mut self, base: &NodeRef, branch: &NodeRef, _is_left: bool, ) -> i32

Calculates matched child list distance.

This measures how well children of a base node match children of a branch node, based on their matching relationships (not content hashes).

Arguments

• base - The base node
• branch - The branch node
• _is_left - Whether the branch is the left branch (unused, for API compatibility)

Trait Implementations

impl Default for Measure

fn default() -> Self

Returns the “default value” for a type.