588   const TValue *obj;  in lua_getmetatable()  local
592   obj = index2adr(L, objindex);  in lua_getmetatable()
593   switch (ttype(obj)) {  in lua_getmetatable()
595       mt = hvalue(obj)->metatable;  in lua_getmetatable()
598       mt = uvalue(obj)->metatable;  in lua_getmetatable()
601       mt = G(L)->mt[ttype(obj)];  in lua_getmetatable()
698   TValue *obj;  in lua_setmetatable()  local
702   obj = index2adr(L, objindex);  in lua_setmetatable()
703   api_checkvalidindex(L, obj);  in lua_setmetatable()
710   switch (ttype(obj)) {  in lua_setmetatable()
712       hvalue(obj)->metatable = mt;  in lua_setmetatable()
714         luaC_objbarriert(L, hvalue(obj), mt);  in lua_setmetatable()
718       uvalue(obj)->metatable = mt;  in lua_setmetatable()
720         luaC_objbarrier(L, rawuvalue(obj), mt);  in lua_setmetatable()
724       G(L)->mt[ttype(obj)] = mt;  in lua_setmetatable()