Struct fungi_lang::ast::HostEvalFn

pub struct HostEvalFn {
    pub path: String,
    pub arity: usize,
    pub eval: Rc<Fn(Vec<RtVal>) -> ExpTerm>,
}

Host-language evaluation function (extend Rust-based Fungi interpreter).

For use as a trapdoor for many different primitives in Fungi's standard library (e.g., vectors, strings, etc.).

Fields

path: String

arity: usize

eval: Rc<Fn(Vec<RtVal>) -> ExpTerm>

Trait Implementations

impl Clone for HostEvalFn

fn clone(&self) -> HostEvalFn

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Hash for HostEvalFn

fn hash<H: Hasher>(&self, _hasher: &mut H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Debug for HostEvalFn

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for HostEvalFn

fn eq(&self, _other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Eq for HostEvalFn