///////////////////////////////////////////////////////////////
//  addOp.cpp - defines wrapper used to add an operation     //
//  Exam1:Q10                                                 //
//  Jim Fawcett, CSE687 - Object Oriented Design, Spring 05  //
///////////////////////////////////////////////////////////////

#include <iostream>
#include <string>

template <typename T>
class addOp : public T
{
public:
  addOp(const T& t) : T(t) {}
  operator T () { return static_cast<T>(*this); }
  void op() const { std::cout << "\n  I'm an added operation"; }
};

template <typename T>
class revisedAddOp : public T
{
public:
  revisedAddOp(const T& t) : T(t) {}
  operator T () { return static_cast<T>(*this); }
  template <typename U>
  void op(const U& u) 
  { 
    std::cout << "\n  I'm a revised added operation"; 
    u.op();
  }
};

void main()
{
  addOp<std::string> ao = std::string("I'm a string");

  std::cout << "\n  " << ao.c_str();
  ao.op();

  std::cout << "\n\n";

  revisedAddOp<std::string> rao = std::string("I'm a revised string");
  std::cout << "\n  " << rao.c_str();
  rao.op(ao);

  std::cout << "\n\n";
}