Struct ExternRef

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

Newtype wrapper around wasmi::ExternRef, which ensures it is always Some.

Implementations

impl ExternRef

pub fn new(inner: ExternRef) -> Option<Self>

Create an optional wasm_runtime_layer::ExternRef-compatible ExternRef from a wasmi::ExternRef.

pub fn into_inner(self) -> ExternRef

Consume an ExternRef to obtain the inner wasmi::ExternRef.

Methods from Deref<Target = ExternRef>

pub fn is_null(&self) -> bool

Returns true if ExternRef is null.

pub fn data<'a, T>( &self, ctx: impl Into<StoreContext<'a, T>>, ) -> Option<&'a (dyn Any + 'static)>

where T: 'a,

Returns a shared reference to the underlying data for this ExternRef.

Panics

Panics if ctx does not own this ExternRef.

Trait Implementations

impl AsRef<ExternRef> for ExternRef

fn as_ref(&self) -> &ExternRef

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for ExternRef

fn clone(&self) -> ExternRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Deref for ExternRef

type Target = ExternRef

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl From<ExternRef> for ExternRef

fn from(wrapper: ExternRef) -> Self

Converts to this type from the input type.

impl WasmExternRef<Engine> for ExternRef

fn new<T: 'static + Send + Sync>( ctx: impl AsContextMut<Engine>, object: T, ) -> Self

Creates a new reference wrapping the given value.

fn downcast<'a, 's: 'a, T: 'static, S: 'a>( &'a self, store: StoreContext<'s, S>, ) -> Result<&'a T>

Returns a shared reference to the underlying data.