#include <boost/spirit/core.hpp>

#include <boost/spirit/attribute.hpp>

#include <boost/spirit/phoenix.hpp>

#include <iostream>

#include <string>

using namespace std;

using namespace boost::spirit;

using namespace phoenix;

phoenix::actor<phoenix::argument<0> > const _1 = phoenix::argument<0>();

phoenix::actor<phoenix::argument<1> > const _2 = phoenix::argument<1>();

phoenix::actor<phoenix::argument<2> > const _3 = phoenix::argument<2>();

struct vars : boost::spirit::closure<vars, double>

{

member1 val;

};

struct calculator : public grammar<calculator, vars::context_t>

};

main()

}