Trait WasmExternRef

pub trait WasmExternRef<E: WasmEngine>:
    Clone
    + Sized
    + Send
    + Sync {
    // Required methods
    fn new<T: 'static + Send + Sync>(
        ctx: impl AsContextMut<E>,
        object: T,
    ) -> Self;
    fn downcast<'a, 's: 'a, T: 'static, S: 'static>(
        &'a self,
        store: E::StoreContext<'s, S>,
    ) -> Result<&'a T>;
}

Provides an opaque reference to any data within WebAssembly.

Required Methods

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

Creates a new reference wrapping the given value.

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

Returns a shared reference to the underlying data.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors