Struct ExceptionRef 

pub struct ExceptionRef(/* private fields */);

An opaque reference to some data. This reference can be passed through Wasm.

Implementations

impl ExceptionRef

pub fn new<T>(store: &mut impl AsStoreMut, value: T) -> ExceptionRef

where T: Any + Send + Sync + 'static,

Make a new extern reference

pub fn downcast<'a, T>(&self, store: &'a impl AsStoreRef) -> Option<&'a T>

where T: Any + Send + Sync + 'static,

Try to downcast to the given value.

pub fn is_from_store(&self, store: &impl AsStoreRef) -> bool

Checks whether this ExceptionRef can be used with the given context.

Primitive (i32, i64, etc) and null funcref/externref values are not tied to a context and can be freely shared between contexts.

Externref and funcref values are tied to a context and can only be used with that context.

Trait Implementations

impl Clone for ExceptionRef

fn clone(&self) -> ExceptionRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExceptionRef

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

Formats the value using the given formatter.

impl From<BackendExceptionRef> for ExceptionRef

fn from(value: BackendExceptionRef) -> ExceptionRef

Converts to this type from the input type.

impl From<ExceptionRef> for Value

fn from(val: ExceptionRef) -> Value

Converts to this type from the input type.