Function db_setmetatable

third-party/lua-5.2.4/src/ldblib.c:45–52

static int db_setmetatable (lua_State *L) {
  int t = lua_type(L, 2);
  luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
                    "nil or table expected");
  lua_settop(L, 2);
  lua_setmetatable(L, 1);
  return 1;  /* return 1st argument */
}


static int db_getuservalue (lua_State *L) {