I used the classic spirit in the past. Now I want to migrate to Spirit 2.4 but I don't get the things together.Reading the different docus in the web did not help. What I want to do at first is to parse a simple string into a QString: My pseudo code looks like:
QString t; qi::rule<string::iterator, QString()> r1 = (+qi::char_)(qi::_val = qi::_1); qi::rule<string::iterator , void()> r = r1[ref(t) = _1]; std::string temp("Hallo"); phrase_parse(temp.begin(), temp.end(), r, qi::space);
But the compiler does no like this. Can anybody help me?
Please note, I don't know anything about QString. But in order to be usable in places where Spirit expects to see a container, any data type needs to conform to certain concepts. In particular the type is expected to expose a STL compatible insert() function, expose the embedded types 'value_type', 'iterator', 'size_type', and 'reference'. IOW, it needs to be a STL compatible container.
If the required interfaces are not exposed, you'll need to specialize Spirit's customization points for your data type (see the docs and examples for that, for instance: http://www.boost.org/doc/libs/1_44_0/libs/spirit/doc/html/spirit/advanced/ customize/is_container.html).
If you write such customization points for QString we would love to get them back and having it added to the Spirit repository.
For the sake of it I added an example to Spirit ($BOOST_ROOT/libs/spirit/example/qi/custom_string.cpp) showing how to parse directly into a QString. HTH Regards Hartmut --------------- Meet me at BoostCon www.boostcon.com