Struct YieldedVal

pub struct YieldedVal { /* private fields */ }

The value yielded by an instance through a Vmctx and returned to the host.

Implementations

impl YieldedVal

pub fn is_none(&self) -> bool

Returns true if the guest yielded without a value.

pub fn is_some(&self) -> bool

Returns true if the guest yielded with a value.

pub fn downcast<A: Any + 'static>(self) -> Result<Box<A>, YieldedVal>

Attempt to downcast the yielded value to a concrete type, returning the original YieldedVal if unsuccessful.

pub fn downcast_ref<A: Any + 'static>(&self) -> Option<&A>

Returns a reference to the yielded value if it is present and of type A, or None if it isn’t.

Trait Implementations

impl Debug for YieldedVal

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

Formats the value using the given formatter.