Please provide an example for parsing a file

[octopus-prime]

In spirit x3 we could use

#include <boost/spirit/include/support_istream_iterator.hpp>

typedef boost::spirit::istream_iterator iterator_t;

std::ifstream stream(file);
iterator_t iterator(stream);

const bool ok = x3::phrase_parse
(
	iterator, iterator_t(),
	<rule>,
	<skipper>,
	<object_to_parse_into>
);

What is your design to do this job in boost::parser now?
The solution should be part of the documentation.

Thanks!