RE: [Spirit-general] Problems with Spirit 1.6.0.

[<har...@t-...>]

Jeff Holle wrote:

There are the following changed nessecary to make it work as expected:

> The program:
> 
> #include <iostream>
> #include <fstream>
> #include <string>
> #include <boost/spirit.hpp>
> using std::cout;
> using std::cerr;
> using std::endl;
> using std::string;
> using std::ifstream;
> using std::getline;
> using namespace boost::spirit;
> 
> struct name
> {
>    template <typename IteratorT>
>    void operator()(IteratorT const & first,IteratorT const & last)
const
>    {
>      string s(first,last);
>      cout << s << endl;
>    }

   // you need the one argument operator() for alnum_p
   // because this parser has an own result_type defined
   template <typename ValueT>
   void operator() (ValueT const &val)
   {
        cout << val << endl;
   }

> };
> 
> 
> struct ini_grammar : public grammar<ini_grammar>
> {
>    template <typename ScannerT>
>    struct definition
>    {
>      definition(ini_grammar const& self)
>      {
>        expression = *alnum_p[name] >> *space_p >> '=' >> *space_p >> 
> *alnum_p; << this is line 31 and the source of the compiler error

    // you have to pass an instance of the required functor as the 
    // semantic action, not a type
        expression = *alnum_p[name()] >> ...

>      };
>      rule<ScannerT> expression;
>      rule<ScannerT> const&
>      start() const { return expression; }
>    };
> };
> 
> int
> main(int argc, char **argv)
> {
>    if (argc < 2) {
>      cerr << "usage: testParser \"win ini file\"" << endl;
>      exit(0);
>    }
>    ifstream( in(argv[1]));

    // this seems to be a typo
    ifstream in(argv[1]);

>    if (!in) {
>      cerr << "Can't open \"" << argv[1] << "\"" << endl;
>      exit(0);
>    }
>    ini_grammar ini;
>    string str;
>    while (getline(in, str))
>    {
>      parse_info<> info = parse(str.c_str(), ini, space_p);
>       if (info.full)
>        cout << "parsing succeeded" << endl;
>       else
>        cout << "parsing failed" << endl;
>    }
> }

HTH
Regards Hartmut