Enum UpvalState 

pub enum UpvalState {
    Open {
        slot: u32,
        thread: Option<Gc<Coro>>,
    },
    Closed(Value),
}

Open / closed state of an upvalue cell.

Variants

Open

references slot slot of thread’s value stack (None = the main thread). The owning thread is tracked so the cell still resolves to the right stack after a coroutine swap (P05).

Fields

slot: u32

Stack slot of the captured local on the owning thread.

thread: Option<Gc<Coro>>

Owning thread, or None for the main thread.

Closed(Value)

Captured value has been hoisted into the cell.

Tuple Fields

0: Value

The closed-over value.

Trait Implementations

impl Clone for UpvalState

fn clone(&self) -> UpvalState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for UpvalState