fp_type_index.h

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#ifndef FP_TYPE_INDEX_H
#define FP_TYPE_INDEX_H
#include <cstring>
#include <typeinfo>
#include <boost/operators.hpp>

namespace FullPhysics {
class null_type {
};

/****************************************************************/
class type_index : public boost::totally_ordered<type_index> {
public:

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------

  type_index() : id(&typeid(null_type)) {}

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------

  type_index(std::type_info const& id) : id(&id) {}

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------

  bool operator==(type_index const& other) const 
  { return std::strcmp(id->name(), other.id->name()) == 0;}

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------

  bool operator<(type_index const& other) const 
  {return std::strcmp(id->name(), other.id->name()) < 0;}

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------

  std::string name() const {return id->name();}
private:
  std::type_info const* id;
};
}
#endif