Macro faithe::function

macro_rules! function {
    (
        $(
            $vs:vis $name:ident: $(extern $($cc:literal)?)? fn($($arg_id:ident: $arg_ty:ty),*) $(-> $ret_ty:ty)? = $lib_name:tt$sep:tt$var:tt$([$add:tt])?;
        )*
    ) => { ... };
}

Creates function that resolves its address on the first call.

function! {
    // Explicitly defined RVA offset relative to `01-hello` module.
    FUNC: extern fn(a: i32) = "01-hello.exe"#0x1900;
}
FUNC.call(5);