Ticket #13093: rule.cpp

#include <boost/any.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/fusion/adapted/std_pair.hpp>
#include <boost/fusion/adapted/boost_tuple.hpp>

#include <vector>
#include <map>
#include <iostream>

namespace json {

namespace qi = boost::spirit::qi;
namespace ascii = boost::spirit::ascii;

struct nullptr_t_ : qi::symbols< char, void * > {
        nullptr_t_() {
                add( "null", NULL );
        }
} nullptr_;

typedef std::map<std::string, boost::any> map_any;
typedef std::vector<boost::any> vector_any;
typedef std::pair<std::string, boost::any> pair_any;

template< typename Iterator >
struct Grammar : qi::grammar< Iterator, boost::any(), ascii::space_type > {
Grammar(): Grammar::base_type( start ) {
                using qi::lexeme;
                using qi::double_;
                using qi::bool_;
                using ascii::char_;

                start = value_rule.alias();
                object_rule = '{' >> pair_rule % ',' >> '}';
                pair_rule = string_rule >> ':' >> value_rule;
                value_rule = object_rule | array_rule | string_rule | nullptr_ | double_ | bool_;
                array_rule = '[' >> value_rule % ',' >> ']';
                string_rule = lexeme[ '\"' >> *( char_ - '\"' ) >> '\"' ];
        }

        qi::rule<Iterator, boost::any(), ascii::space_type>   start;
        qi::rule<Iterator, map_any(), ascii::space_type>      object_rule;
        qi::rule<Iterator, pair_any(), ascii::space_type>     pair_rule;
        qi::rule<Iterator, boost::any(), ascii::space_type>   value_rule;
        qi::rule<Iterator, vector_any(), ascii::space_type>   array_rule;
        qi::rule<Iterator, std::string(), ascii::space_type>  string_rule;
};

}

int main(int argc, char** argv) {
  //"{\"name\":10}"
        const std::string source(argv[1]);
        json::Grammar< std::string::const_iterator > g;
        boost::any v;
  json::map_any ma;
  json::vector_any va;
  json::pair_any pa;
        std::string::const_iterator  bit = source.begin();
        std::string::const_iterator  eit = source.end();
        bool r = boost::spirit::qi::phrase_parse( bit, eit, g, boost::spirit::ascii::space, v );
        if( r ) {
    std::cout << BOOST_LIB_VERSION << std::endl;
    std::cout << v.type().name() << std::endl;
    std::cout << typeid(ma).name() << std::endl;
    std::cout << typeid(va).name() << std::endl;
    std::cout << typeid(pa).name() << std::endl;
    return 0;
                std::vector< boost::any> a = boost::any_cast< std::vector< boost::any> >( v );
                for( std::vector< boost::any>::iterator it = a.begin(); it != a.end(); ++it ) {
      if(it->type() == typeid(char*)) {
                                std::cout << boost::any_cast< char*>( *it ) << std::endl;
      } else if(it->type() == typeid(const char*)) {
                                std::cout << boost::any_cast< const char*>( *it ) << std::endl;
      } else if(it->type() == typeid(std::string)) {
                                std::cout << boost::any_cast< std::string>( *it ) << std::endl;
      } else if(it->type() == typeid(double)) {
                                std::cout << boost::any_cast< double>( *it ) << std::endl;
      } else if(it->type() == typeid(bool)) {
                                std::cout << boost::any_cast< bool>( *it ) << std::endl;
      } else {
                                std::cout << boost::any_cast< void * >( *it ) << std::endl;
      }
                }
        } else {
    std::cout << "not found" << std::endl;
  }
        return 0;
}