#include <boost/spirit/tree/common.hpp>
#include <boost/spirit/tree/parse_tree.hpp>
#include <boost/spirit/iterator/multi_pass.hpp>
#include <boost/spirit/iterator/position_iterator.hpp>
#include <boost/spirit/utility/chset.hpp>

#include <string>

using namespace boost::spirit;

int main(int, char**)
{
  const std::string text("want to parse. this");

  typedef position_iterator<const char*> piterator_t;
  piterator_t pbeg(text.c_str(), text.c_str()+text.size());
  piterator_t pend;

#define MULTIPASSDBG
//#undef MULTIPASSDBG

#ifdef MULTIPASSDBG
  typedef multi_pass<piterator_t> iterator_t;
  iterator_t ibeg(make_multi_pass(pbeg));
  iterator_t iend(make_multi_pass(pend));

  tree_parse_info<iterator_t> info =
    pt_parse(ibeg, iend, chset_p("a-z"), space_p);
#else
  tree_parse_info<piterator_t> info =
    pt_parse(pbeg, pend, chset_p("a-z"), space_p);
#endif

  if( !info.full )
    std::cerr << "error at position " << info.stop.get_position().line << std::endl;
  return 0;
}