Function translate_args

crates/c-api/src/func.rs:121–133

Places the `args` into `dst` and additionally reserves space in `dst` for `results_size` returns. The params/results slices are then returned separately.

(
    dst: &'a mut Vec<Val>,
    args: impl ExactSizeIterator<Item = Val>,
    results_size: usize,
)

/// Places the `args` into `dst` and additionally reserves space in `dst` for `results_size`
/// returns. The params/results slices are then returned separately.
pub(crate) fn translate_args<'a>(
    dst: &'a mut Vec<Val>,
    args: impl ExactSizeIterator<Item = Val>,
    results_size: usize,
) -> (&'a [Val], &'a mut [Val]) {
    debug_assert!(dst.is_empty());
    let num_args = args.len();
    dst.reserve(args.len() + results_size);
    dst.extend(args);
    dst.extend((0..results_size).map(|_| Val::null_func_ref()));
    let (a, b) = dst.split_at_mut(num_args);
    (a, b)
}

#[unsafe(no_mangle)]
pub unsafe extern "C" fn wasm_func_call(