luaur-vm 0.1.3

The Luau register virtual machine and standard library (Rust).
Documentation 
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use core::ffi::{c_int, c_void};

use crate::functions::index_2_addr::index2addr;
use crate::macros::lightuserdatatag::lightuserdatatag;
use crate::macros::ttislightuserdata::ttislightuserdata;
use crate::type_aliases::lua_state::lua_State;
use crate::type_aliases::stk_id::StkId;

#[allow(non_snake_case)]
pub unsafe fn lua_tolightuserdatatagged(L: *mut lua_State, idx: c_int, tag: c_int) -> *mut c_void {
    let o: StkId = index2addr(L, idx);

    if !ttislightuserdata!(o) || lightuserdatatag!(o) != tag {
        core::ptr::null_mut()
    } else {
        (*o).value.p
    }
}