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luaur_vm/functions/
lua_getfield.rs

1use core::ffi::{c_char, c_int};
2
3use crate::functions::index_2_addr::index2addr;
4use crate::functions::lua_concat::lua_c_threadbarrier_lapi;
5use crate::functions::lua_v_gettable::lua_v_gettable;
6use crate::macros::api_check::api_check;
7use crate::macros::api_incr_top::api_incr_top;
8use crate::macros::lua_o_nilobject::luaO_nilobject;
9use crate::macros::lua_s_new::luaS_new;
10use crate::macros::setsvalue::setsvalue;
11use crate::macros::ttype::ttype;
12use crate::records::lua_state::lua_State;
13use crate::records::lua_t_value::TValue;
14use crate::type_aliases::stk_id::StkId;
15
16#[allow(non_snake_case)]
17pub unsafe fn lua_getfield(L: *mut lua_State, idx: c_int, k: *const c_char) -> c_int {
18    lua_c_threadbarrier_lapi(L);
19
20    let t: StkId = index2addr(L, idx);
21    api_check!(L, t != luaO_nilobject as StkId);
22
23    let mut key = TValue::default();
24    setsvalue!(L, &mut key, luaS_new(L, k));
25    lua_v_gettable(L, t, &mut key, (*L).top);
26    api_incr_top!(L);
27
28    ttype!((*L).top.sub(1))
29}