const bool r
        = qi::parse(beg, end,
                     no_case[(
                         (string("LOCK")     [ph::ref(command) = ct_lock]     >> *space >> construct<std::string>(+(char_ - eoi))[ph::ref(lock_name) = _1])
                       | (string("TRY_LOCK") [ph::ref(command) = ct_try_lock] >> *space >> construct<std::string>(+(char_ - eoi))[ph::ref(lock_name) = _1])
                       | (string("UNLOCK")   [ph::ref(command) = ct_unlock]   >> eoi)
                       | (string("VERSION")  [ph::ref(command) = ct_version]  >> eoi)
                       | (string("INFO")     [ph::ref(command) = ct_info]     >> eoi)
                       | (string("QUIT")     [ph::ref(command) = ct_quit]     >> eoi)
                     )]);