literal_datatypes.hpp

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#ifndef LITERAL_DATATYPES_HPP_
#define LITERAL_DATATYPES_HPP_
#include <string>
#include "boost/cstdint.hpp"
#include "boost/lexical_cast.hpp"
#include "boost/numeric/conversion/cast.hpp"

#include "owlcpp/terms/node_tags_owl.hpp"
#include "owlcpp/terms/node_tags_system.hpp"
#include "owlcpp/terms/term_methods.hpp"
#include "owlcpp/rdf/exception.hpp"

namespace owlcpp{ namespace detail{

/*
*******************************************************************************/
struct Datatype_bool {
   typedef bool value_type;
   typedef owlcpp::terms::xsd_boolean default_datatype;

   static value_type convert(std::string const& str, const Node_id dt) {
      if( str == "true" ) return true;
      if( str == "false" ) return false;
      return boost::lexical_cast<value_type>(str);
   }

   template<class T> static value_type convert(const T x, const Node_id) {
      return boost::numeric_cast<value_type>(x);
   }

   static std::string const& name_str(const Node_id) {
      static const std::string name(to_string_pref(default_datatype()));
      return name;
   }

   static std::string to_string(value_type const v, const Node_id) {
      return v ? "true" : "false";
   }
};

/*
*******************************************************************************/
struct Datatype_int{
   typedef boost::intmax_t value_type;
   typedef owlcpp::terms::xsd_int default_datatype;

   static value_type convert(std::string const& str, const Node_id dt) {
      return boost::lexical_cast<value_type>(str);
   }

   template<class T> static value_type convert(const T x, const Node_id) {
      return boost::numeric_cast<value_type>(x);
   }

   static std::string const& name_str(const Node_id) {
      static const std::string name(to_string_pref(default_datatype()));
      return name;
   }

   static std::string to_string(value_type const v, const Node_id) {
      return boost::lexical_cast<std::string>(v);
   }
};

/*
*******************************************************************************/
struct Datatype_unsigned{
   typedef boost::uintmax_t value_type;
   typedef owlcpp::terms::xsd_unsignedInt default_datatype;

   static value_type convert(std::string const& str, const Node_id dt) {
      return boost::numeric_cast<value_type>(
               boost::lexical_cast<Datatype_int::value_type>(str)
      );
   }

   template<class T> static value_type convert(const T x, const Node_id) {
      return boost::numeric_cast<value_type>(x);
   }

   static std::string const& name_str(const Node_id) {
      static const std::string name(to_string_pref(default_datatype()));
      return name;
   }

   static std::string to_string(value_type const v, const Node_id) {
      return boost::lexical_cast<std::string>(v);
   }
};

/*
*******************************************************************************/
struct Datatype_real{
   typedef double value_type;
   typedef owlcpp::terms::xsd_double default_datatype;

   static value_type convert(std::string const& str, const Node_id dt) {
      return boost::lexical_cast<value_type>(str);
   }

   template<class T> static value_type convert(const T x, const Node_id) {
      return boost::numeric_cast<value_type>(x);
   }

   static std::string const& name_str(const Node_id) {
      static const std::string name(to_string_pref(default_datatype()));
      return name;
   }

   static std::string to_string(value_type const v, const Node_id) {
      return boost::lexical_cast<std::string>(v);
   }
};

/*
*******************************************************************************/
struct Datatype_string{
   typedef std::string value_type;
   typedef owlcpp::terms::xsd_string default_datatype;

   static value_type const& convert(std::string const& str, const Node_id dt) {
      return str;
   }

   template<class T> static value_type convert(const T x) {return x;}

   static std::string const& name_str(const Node_id) {
      static const std::string name(to_string_pref(default_datatype()));
      return name;
   }
};

}//namespace detail
}//namespace owlcpp
#endif /* LITERAL_DATATYPES_HPP_ */