Function luaT_objtypename

extlibs/lua/src/ltm.c:91–100

** Return the name of the type of an object. For tables and userdata ** with metatable, use their '__name' metafield, if present. */

** with metatable, use their '__name' metafield, if present.
*/
const char *luaT_objtypename (lua_State *L, const TValue *o) {
  Table *mt;
  if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
      (ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
    const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
    if (ttisstring(name))  /* is '__name' a string? */
      return getstr(tsvalue(name));  /* use it as type name */
  }
  return ttypename(ttype(o));  /* else use standard type name */
}


void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,