Struct ExternRef

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

Newtype wrapper around wasmer::ExternRef.

Implementations

impl ExternRef

pub fn new(inner: ExternRef) -> Self

Create a wasm_runtime_layer::ExternRef-compatible ExternRef from a wasmer::ExternRef.

pub fn into_inner(self) -> ExternRef

Consume a ExternRef to obtain the inner wasmer::ExternRef.

Methods from Deref<Target = ExternRef>

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 ExternRef 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 AsMut<ExternRef> for ExternRef

fn as_mut(&mut self) -> &mut ExternRef

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

impl AsMut<ExternRef> for ExternRef

fn as_mut(&mut self) -> &mut ExternRef

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

impl AsRef<ExternRef> for ExternRef

fn as_ref(&self) -> &ExternRef

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

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 DerefMut for ExternRef

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl From<ExternRef> for ExternRef

fn from(inner: ExternRef) -> Self

Converts to this type from the input type.

impl From<ExternRef> for ExternRef

fn from(wrapper: ExternRef) -> Self

Converts to this type from the input type.

impl RefCast for ExternRef

type From = ExternRef

fn ref_cast(_from: &Self::From) -> &Self

fn ref_cast_mut(_from: &mut Self::From) -> &mut Self

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: 's>( &'a self, ctx: StoreContext<'s, S>, ) -> Result<&'a T>

Returns a shared reference to the underlying data.