Function host_function_wrapper

pub fn host_function_wrapper<Params: InteropValueList, Results: InteropValueList>(
    params: Vec<Value>,
    f: impl FnOnce(Params) -> Results,
) -> Vec<Value>

Helper function to quickly construct host functions without worrying about wasm to Rust type conversion. For user data, simply move the mutable reference into the passed closure.

Example

use wasm::{validate, RuntimeInstance, host_function_wrapper, Value};
fn my_wrapped_host_func(user_data: &mut (), params: Vec<Value>) -> Vec<Value> {
    host_function_wrapper(params, |(x, y): (u32, i32)| -> u32 {
        let _user_data = user_data;
        x + (y as u32)
 })
}
fn main() {
    let mut instance = RuntimeInstance::new(());
    let foo_bar = instance.add_host_function_typed::<(u32,i32),u32>("foo", "bar", my_wrapped_host_func).unwrap();
}