OPENTREP_Abstract.hpp

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#ifndef __OPENTREP_OPENTREP_ABSTRACT_HPP
#define __OPENTREP_OPENTREP_ABSTRACT_HPP

// //////////////////////////////////////////////////////////////////////
// Import section
// //////////////////////////////////////////////////////////////////////
// STL
#include <iosfwd>
#include <string>

namespace OPENTREP {

  struct OPENTREP_Abstract {
  public:
    // /////////// Display support methods /////////
    virtual void toStream (std::ostream& ioOut) const = 0;

    virtual void fromStream (std::istream& ioIn) = 0;

    virtual std::string toString() const = 0;
    

  protected:
    OPENTREP_Abstract () {}
    OPENTREP_Abstract (const OPENTREP_Abstract&) {}

    virtual ~OPENTREP_Abstract() {}
  };
}

template <class charT, class traits>
inline
std::basic_ostream<charT, traits>&
operator<< (std::basic_ostream<charT, traits>& ioOut,
            const OPENTREP::OPENTREP_Abstract& iStructure) {
  std::basic_ostringstream<charT,traits> ostr;
  ostr.copyfmt (ioOut);
  ostr.width (0);

  // Fill string stream
  iStructure.toStream (ostr);

  // Print string stream
  ioOut << ostr.str();

  return ioOut;
}

template <class charT, class traits>
inline
std::basic_istream<charT, traits>&
operator>> (std::basic_istream<charT, traits>& ioIn,
            OPENTREP::OPENTREP_Abstract& ioStucture) {
  // Fill Bom object with input stream
  ioStucture.fromStream (ioIn);
  return ioIn;
}

#endif // __OPENTREP_OPENTREP_ABSTRACT_HPP