Struct wasm_runtime_layer::ExternRef

pub struct ExternRef { /* private fields */ }

Represents a nullable opaque reference to any data within WebAssembly.

Implementations

impl ExternRef

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

Creates a new ExternRef wrapping the given value.

pub fn downcast<'a, T: 'static, S: 'a, E: WasmEngine>( &self, ctx: StoreContext<'a, S, E> ) -> Result<Option<&'a T>>

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

Trait Implementations

impl Clone for ExternRef

fn clone(&self) -> ExternRef

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExternRef

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

Formats the value using the given formatter.