Re: [Boost-users] [spirit] how to get_position() from a multi_pass<position_iterator <const char*> >

On Thu, Aug 20, 2009 at 22:42, Hartmut Kaiser wrote:

...

I use a position_iterator for parsing with boost::spirit.

Because I need the regex_p feature, I have to wrap this iterator using a multi_pass iterator.

I call pt_parse and get a

boost::spirit::tree_parse_info >, ...> parse_info.

Now I have problems calling the get_position() method on "parse_info.stop".

I guess this is the case because multi_pass does not store my iterator but wraps it using boost::iterator which loses the position features of position_iterators and only keeps the const char* pointer.

Do you have an advice for me?

It's difficult to tell from here as you didn't provide too much information. Would you mind posting a small example exposing your problem?

I have attached a minimal example. If you do not define MULTIPASSDBG, it builds but you are not allowed to use regex_p in the parser. If you define it, you are allowed to use regex_p, but the get_position does no longer compile and so the iterator becomes a bit useless. I read something about a "base()" method for wrapping iterators, but could not find one in the multi_pass sources. Thanks and regards, Peter