position_iterator and skip parser

[olafvdspek@…]

This prints 1 while the error is on line 2.

#include <boost/spirit/include/classic.hpp>
#include <cassert>
#include <iostream>

using namespace boost::spirit::classic;
using namespace std;

int main()
{
       typedef position_iterator<const char*> iterator_t;
       const char* str = "1\nA";
       parse_info<iterator_t> info = parse(iterator_t(str, str +
strlen(str)), iterator_t(), int_p >> !end_p, space_p);
       cout << info.stop.get_position().line << endl;
   return 0;
}

[anonymous]

Sure, it needs to give you a line number of 1, because the parse fails before the end_p parser, which leaves the position of the last valid match at the point before the skip of the failed match (IOW, right after the last successful match).

Regards Hartmut