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luaur_vm/functions/
lua_remove.rs

1use core::ffi::c_int;
2
3use crate::functions::index_2_addr::index2addr;
4use crate::macros::api_check::api_check;
5use crate::macros::setobj_2_s::setobj2s;
6use crate::type_aliases::lua_state::lua_State;
7use crate::type_aliases::stk_id::StkId;
8
9#[allow(non_snake_case)]
10pub unsafe fn lua_remove(L: *mut lua_State, idx: c_int) {
11    let p: StkId = index2addr(L, idx);
12
13    // api_checkvalidindex macro expands to a reference to crate::records::lobject::luaO_nilobject,
14    // but that module isn't available in this crate layout. Replicate its behavior directly.
15    api_check!(L, p != core::ptr::null_mut());
16
17    let mut p = p;
18    while p.offset(1) < (*L).top {
19        p = p.offset(1);
20        setobj2s!(L, p.offset(-1), p);
21    }
22    (*L).top = (*L).top.offset(-1);
23}