Struct Registry 

pub struct Registry {
    pub functions: HashMap<String, FunctionKind>,
    pub metadata: HashMap<String, FunctionMeta>,
}

The runtime registry of built-in and user-registered spreadsheet functions.

Fields

functions: HashMap<String, FunctionKind>

metadata: HashMap<String, FunctionMeta>

Implementations

impl Registry

pub fn new() -> Self

pub fn register_eager(&mut self, name: &str, f: EagerFn, meta: FunctionMeta)

Register a user-facing eager function with metadata. Appears in list_functions(). Panics if name is already registered (duplicate registration).

pub fn register_lazy(&mut self, name: &str, f: LazyFn, meta: FunctionMeta)

Register a user-facing lazy function with metadata. Appears in list_functions(). Panics if name is already registered (duplicate registration).

pub fn register_alias(&mut self, alias: &str, canonical: &str)

Register alias as an alternate name for canonical. The alias shares the same handler but does NOT appear in function metadata (it will not show up in list_functions() or autocomplete). Panics if alias is already registered or canonical is not yet registered.

pub fn register_internal(&mut self, name: &str, f: EagerFn)

Register an internal/compiler-only eager function without metadata. Never appears in list_functions().

pub fn register_internal_lazy(&mut self, name: &str, f: LazyFn)

Register an internal/compiler-only lazy function without metadata. Never appears in list_functions().

pub fn get(&self, name: &str) -> Option<&FunctionKind>

pub fn list_functions(&self) -> impl Iterator<Item = (&str, &FunctionMeta)>

Iterate all user-facing functions with their metadata. The registry is the single source of truth — this can never drift.

pub fn get_metadata(&self) -> Vec<FunctionMetaEntry<'_>>

Return all function metadata entries as a Vec of named structs. Used for inspection (e.g. counting functions, verifying aliases are absent).

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

Return all user-facing function names (from metadata, not aliases).

impl Registry

pub const VOLATILE_FUNCTIONS: &'static [&'static str]

Volatile functions — outputs change on every evaluation. Excluded from conformance fixtures; covered by property tests instead.

Trait Implementations

impl Default for Registry

fn default() -> Self

Returns the “default value” for a type.