#include <boost/config/warning_disable.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>

#include <string>

namespace qi = boost::spirit::qi;

template <typename Iterator>
struct grammar_format : qi::grammar<Iterator, unsigned()>
{
   grammar_format():
      grammar_format::base_type(term)
   {
      using qi::lit;
      using qi::_val;

      term = lit('M')[_val = 0];
   }

   qi::rule<Iterator, unsigned()> term;
};


int main()
{
   grammar_format<std::string::const_iterator> grammar;

   return 0;
}