Function lua_getlocal

src/Chain/libraries/glua/ldebug.cpp:194–215

LUA_API const char *lua_getlocal(lua_State *L, const lua_Debug *ar, int n) {
    const char *name;
    lua_lock(L);
    swapextra(L);
    if (ar == nullptr) {  /* information about non-active function? */
        if (!isLfunction(L->top - 1))  /* not a Lua function? */
            name = nullptr;
        else  /* consider live variables at function start (parameters) */
            name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0);
    }
    else {  /* active function; get information through 'ar' */
        StkId pos = nullptr;  /* to avoid warnings */
        name = findlocal(L, ar->i_ci, n, &pos);
        if (name) {
            setobj2s(L, L->top, pos);
            api_incr_top(L);
        }
    }
    swapextra(L);
    lua_unlock(L);
    return name;
}


LUA_API const char *lua_setlocal(lua_State *L, const lua_Debug *ar, int n) {