Function luaL_testudata

modules/engine/lua/src/build.skr_lua.cpp:303–317

}

void *luaL_testudata (lua_State *L, int i, const char *tname) {
  void *p = lua_touserdata(L, i);
  luaL_checkstack(L, 2, "not enough stack slots");
  if (p == NULL || !lua_getmetatable(L, i))
    return NULL;
  else {
    int res = 0;
    luaL_getmetatable(L, tname);
    res = lua_rawequal(L, -1, -2);
    lua_pop(L, 2);
    if (!res)
      p = NULL;
  }
  return p;
}

void luaL_setmetatable (lua_State *L, const char *tname) {
  luaL_checkstack(L, 1, "not enough stack slots");