Containing X3 rules in user namespaces

Hello,

Is it possible to contain rules in user namespaces? i.e.

namespace Kmsg {

    namespace IPv4 {

        using namespace boost::spirit;
        using namespace boost::spirit::x3;


        x3::rule<class octet, std::uint8_t> const octet = "octet";

        auto const octet_def = digit
            | (char_('1', '9') >> digit[repeat(1, 2)])
            | (char_('2') >> char_('0', '4') >> digit)
            | ("25" >> char_('0', '5'))
            ;
    }
}

BOOST_SPIRIT_DEFINE(Kmsg::IPv4::octet);

Untested at the moment. Just wanted to propose the question for now.

Cheers,

Michael Powell

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot