Trait callisp::ast::LispCallable

pub trait LispCallable: Debug + DynClone {
    fn arity(&self) -> &FunctionArity;
    fn call(
        &self,
        args: Vec<Ast>,
        env: &mut Environment
    ) -> Result<Ast, LispError>;
}

Trait used to define Lisp functions.

Required Methods

fn arity(&self) -> &FunctionArity

Return the arity of the function.

fn call(&self, args: Vec<Ast>, env: &mut Environment) -> Result<Ast, LispError>

Call the function and return the result.

Trait Implementations

impl Clone for Box<dyn LispCallable>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

Implementors

impl LispCallable for LispLambda