Struct Function 

pub struct Function { /* private fields */ }

Implementations

impl Function

pub fn new(parent_scope: Weak<dyn Scope>, function: FunctionDef) -> Rc<Self>

Creates a function from its parsed definition.

pub fn name(&self) -> &str

pub fn return_type(&self) -> Option<&[String]>

pub fn args(&self) -> &[(Vec<String>, String)]

pub fn statements(&self) -> &[Statement]

pub fn call( &self, env: Rc<dyn Env>, args: Vec<Slot>, ) -> Result<Option<Slot>, RiddleError>

Invokes the function in a fresh local environment.

The call validates argument count and type compatibility, executes all function statements, and checks the declared return type (if any).

Trait Implementations

impl Scope for Function

fn core(&self) -> Rc<dyn Core>

fn scope(&self) -> Option<Rc<dyn Scope>>

fn get_fields(&self) -> Vec<Rc<Field>>

fn get_field(&self, name: &str) -> Option<Rc<Field>>

fn get_function( &self, name: &str, types: &[Rc<dyn Type>], ) -> Option<Rc<Function>>

fn get_type(&self, name: &str) -> Option<Rc<dyn Type>>

fn get_predicate(&self, name: &str) -> Option<Rc<Predicate>>

fn as_class(self: Rc<Self>) -> Option<Rc<dyn Class>>