Struct yksom::vm::objects::UpVar

pub struct UpVar { /* fields omitted */ }

An UpVar references either a variable on the stack or, if the UpVar is closed, a copy of that variable inside the struct itself (the closed field). This scheme is very similar to that used in Lua; the best explanation I know of can be found at: http://www.craftinginterpreters.com/closures.html.

Implementations

impl UpVar

pub fn new(prev: Option<Gc<UpVar>>, ptr: Gc<Val>) -> Self

pub fn to_gc(&self) -> Gc<Val>

pub fn close(&self)

pub fn is_closed(&self) -> bool

pub fn prev(&self) -> Option<Gc<UpVar>>

pub fn set_prev(&self, prev: Option<Gc<UpVar>>)

Trait Implementations

impl Clone for UpVar

fn clone(&self) -> UpVar

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UpVar

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

Formats the value using the given formatter.