Re: [Boost-users] [spirit] first steps

Subject: Re: [Boost-users] [spirit] first steps
From: Igor R (boost.lists_at_[hidden])
Date: 2010-02-18 18:09:37

> Yeah, now your skip parser (space) is eating the eol characters. Use
> qi::blank instead (which matches space and tab only).

Then it doesn't compile (msvc9.0).

#include <boost/config/warning_disable.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
#include <boost/spirit/include/phoenix_object.hpp>
#include <boost/fusion/include/adapt_struct.hpp>
#include <string>

namespace qi = boost::spirit::qi;
namespace ascii = boost::spirit::ascii;

namespace details
{
        struct sensor
        {
                int id;
                std::string type;
                int cam;
                int group;
                std::string name;
                int state;
                std::string regs;
        };
}

BOOST_FUSION_ADAPT_STRUCT
(
  details::sensor,
                (int, id)
                (std::string, type)
                (int, cam)
                (int, group)
                (std::string, name)
                (int, state)
                (std::string, regs)
)

namespace details
{
template <typename Iterator>
struct sensor_parser : qi::grammar<Iterator, details::sensor(),
ascii::space_type>
{
  sensor_parser() : sensor_parser::base_type(start)
  {
    using qi::int_;
    using qi::lit;
    using qi::double_;
    using qi::lexeme;
    using qi::eol;
    using ascii::char_;

                text %= lexeme[+~char_("\r\n:")];

    start %=
                        int_ >> ':'
			>> text >> ':'
			>> int_ >> ':'
			>> int_ >> ':'
			>> text >>
                        -(':' >> int_) >>
                        -(':' >> text)
			>> eol
      ;
  }

  qi::rule<Iterator, std::string(), ascii::space_type> text;
  qi::rule<Iterator, sensor(), ascii::space_type> start;
};
}

int main()
{
        typedef std::string::const_iterator iterator_type;
        typedef details::sensor_parser<iterator_type> sensor_parser;

        std::string str = "3:abcd:4:5:My name:6:33333333333\r\n";
        details::sensor sens;
        std::string::const_iterator iter = str.begin();
        std::string::const_iterator end = str.end();

        sensor_parser g;
        using qi::blank;
        bool r = phrase_parse(iter, end, g, blank, sens);
}