Re: [Boost-users] boost-spirit: need help with simple parser

Thanks, I changed it to a lazy function as suggested, and then it works. Just for the record: struct Ipv4Address : qi::grammar { Ipv4Address() : Ipv4Address::base_type(start) { start = ( octet >> qi::lit('.') >> octet >> qi::lit('.') >> octet >> qi::lit('.') >> octet ) [ qi::_val = phx::bind(&make_ipv4, qi::_1, qi::_2, qi::_3, qi::_4 ) ] ; } qi::rule start; } ipv4_address; On Tue, Jul 3, 2012 at 2:29 PM, Igor R wrote:

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Sorry for not providing the simplest possible code to reproduce my problem, but I'm still new to spirit, I think I will miss some details in the conversion.

I tried add the inclusion you suggested, but it did not help.

Sorry, although it works for boost::tuple, it won't work for your Ipv4 struct... But a simple workaround can solve this issue: in Ipv4Address grammar change attribute to boost::tuple, and in your parse() function use tuple type as temporary, then copy it to Ipv4 argument (you use a temporary anyway). Like this: bool parse(const const_string& s, Ipv4& i) { boost::tuple _i; const char * iter = s.begin(); bool r = qi::parse(iter, s.end(), ipv4_address, _i);

if( !r || iter != s.end() ) return false;

i = Ipv4(_i); return true; } _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users