Method try_wrap

crates/wasmtime/src/runtime/func.rs:829–843

Fallible version of [`Func::wrap`] that returns an error on out-of-memory instead of panicking. # Errors This function will return an [`OutOfMemory`][crate::OutOfMemory] error when memory allocation fails. See the `OutOfMemory` type's documentation for details on Wasmtime's out-of-memory handling.

(
        mut store: impl AsContextMut<Data = T>,
        func: impl IntoFunc<T, Params, Results>,
    )

    /// memory allocation fails. See the `OutOfMemory` type's documentation for
    /// details on Wasmtime's out-of-memory handling.
    pub fn try_wrap<T, Params, Results>(
        mut store: impl AsContextMut<Data = T>,
        func: impl IntoFunc<T, Params, Results>,
    ) -> Result<Func>
    where
        T: 'static,
    {
        let store = store.as_context_mut().0;
        let engine = store.engine();
        let host = func.into_func(engine)?;

        // SAFETY: The `T` the closure takes is the same as the `T` of the store
        // we're inserting into via the type signature above.
        Ok(unsafe { host.into_func(store)? })
    }

    /// Same as [`Func::wrap`], except the closure asynchronously produces the
    /// result and the arguments are passed within a tuple. For more information