enum privilege_t: unsigned long long

{

  NO_ACL                = (0),

  SELECT_ACL            = (1UL << 0),

  INSERT_ACL            = (1UL << 1),

  UPDATE_ACL            = (1UL << 2),

  DELETE_ACL            = (1UL << 3),

  CREATE_ACL            = (1UL << 4),

  DROP_ACL              = (1UL << 5),

  RELOAD_ACL            = (1UL << 6),

  SHUTDOWN_ACL          = (1UL << 7),

  PROCESS_ACL           = (1UL << 8),

  FILE_ACL              = (1UL << 9),

  GRANT_ACL             = (1UL << 10),

  REFERENCES_ACL        = (1UL << 11),

  INDEX_ACL             = (1UL << 12),

  ALTER_ACL             = (1UL << 13),

  SHOW_DB_ACL           = (1UL << 14),

  SUPER_ACL             = (1UL << 15),

  CREATE_TMP_ACL        = (1UL << 16),

  LOCK_TABLES_ACL       = (1UL << 17),

  EXECUTE_ACL           = (1UL << 18),

  REPL_SLAVE_ACL        = (1UL << 19),

  REPL_CLIENT_ACL       = (1UL << 20),

  CREATE_VIEW_ACL       = (1UL << 21),

  SHOW_VIEW_ACL         = (1UL << 22),

  CREATE_PROC_ACL       = (1UL << 23),

  ALTER_PROC_ACL        = (1UL << 24),

  CREATE_USER_ACL       = (1UL << 25),

  EVENT_ACL             = (1UL << 26),

  TRIGGER_ACL           = (1UL << 27),

  CREATE_TABLESPACE_ACL = (1UL << 28),

  DELETE_HISTORY_ACL    = (1UL << 29),

  ALL_KNOWN_ACL         = (1UL << 30) - 1 // A combination of all defined bits

};

static inline constexpr privilege_t operator&(privilege_t a, privilege_t b)

{

  return static_cast<privilege_t>(static_cast<ulonglong>(a) &

                                  static_cast<ulonglong>(b));

}