Method add_callable

std/src/lib.rs:290–299

Registers the given builtin callable, which must not yet be registered.

(&mut self, callable: Rc<dyn Callable>)

    /// Registers the given builtin callable, which must not yet be registered.
    pub fn add_callable(&mut self, callable: Rc<dyn Callable>) {
        let metadata = callable.metadata();
        let key = SymbolKey::from(metadata.name());

        let previous = self.callables.insert(key.clone(), callable);
        debug_assert!(previous.is_none(), "Cannot insert a callable twice");

        let previous = self.callables_metadata.borrow_mut().insert(key, metadata);
        debug_assert!(previous.is_none(), "Cannot insert callable metadata twice");
    }

    /// Returns metadata for all callables currently registered in the builder.
    pub fn callables_metadata(&self) -> Rc<RefCell<HashMap<SymbolKey, Rc<CallableMetadata>>>> {