StructAbstract.hpp

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#ifndef __OPENTREP_BAS_STRUCTABSTRACT_HPP
#define __OPENTREP_BAS_STRUCTABSTRACT_HPP
 
// //////////////////////////////////////////////////////////////////////
// Import section
// //////////////////////////////////////////////////////////////////////
// STL
#include <iosfwd>
#include <string>
 
namespace OPENTREP {

  struct StructAbstract {
  public:

    virtual ~StructAbstract() {}

    void toStream (std::ostream& ioOut) const {
      ioOut << describe();
    }

    virtual void fromStream (std::istream& ioIn) {}

    virtual std::string describe() const = 0;
 
  protected:
    StructAbstract() {}
  };
}

template <class charT, class traits>
inline
std::basic_ostream<charT, traits>&
operator<< (std::basic_ostream<charT, traits>& ioOut,
            const OPENTREP::StructAbstract& iStruct) {
  std::basic_ostringstream<charT,traits> ostr;
  ostr.copyfmt (ioOut);
  ostr.width (0);
 
  // Fill string stream
  iStruct.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::StructAbstract& ioStruct) {
  // Fill the Structure object with the input stream.
  ioStruct.fromStream (ioIn);
  return ioIn;
 
}
#endif // __OPENTREP_BAS_STRUCTABSTRACT_HPP