Struct RuleRegistry 

pub struct RuleRegistry { /* private fields */ }

A registry of differentiation rules, keyed by (lower-cased) function name.

Built-ins populate it; users extend it with RuleRegistry::register (design.md §3.2 — the “extensible rule registry” decision).

Implementations

impl RuleRegistry

pub fn new() -> Self

A registry populated with the built-in v1 rule set: + - * /, the unary chain rule for the trig / inverse-trig / exp / log / hyperbolic set plus abs, and power with a constant base or exponent (design.md §3.6).

pub fn unary_names(&self) -> Vec<String>

The unary function names this registry has a rule for, sorted.

Read out of the registry rather than restated, so it cannot fall behind what is implemented — and so a test asking “is every rule covered?” is asking the engine instead of a second list that has to be maintained alongside the first. Includes rules a caller registered.

pub fn register(&mut self, name: &str, rule: Rule)

Register (or override) a unary differentiation rule under name. The name is matched case-insensitively.

Trait Implementations

impl Clone for RuleRegistry

fn clone(&self) -> RuleRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for RuleRegistry

fn default() -> Self

Returns the “default value” for a type.