#ifndef NOISY_H
#define NOISY_H

#include <iostream>

// Noisy class that reports when it is being created, copied, assigned
// or destroyed.
//
// Copyright (c) 2005 by Curtis Krauskopf
//                       http://www.decompile.com
// Permission to use, copy, modify, distribute and sell this software for any
//     purpose is hereby granted without fee, provided that the above copyright
//     notice appears in all copies of this file and in all modified versions
//     of this file.
// The author makes no representations about the suitability of this
//     software for any purpose. It is provided "as is" without express
//     or implied warranty.
// Created:  March 26, 2005 by Curtis Krauskopf (cdk)
//                             http://www.decompile.com
//
//
// Noisy is debugging tool.  When added to a class or struct, it
// reports when the data elements of the class or struct are automatically
// being created, copied, assigned or destroyed.  This is a non-intrusive
// way of being able to detect those situations.  In the below example,
// a Payload struct contains a std::string.
//
// This technique is designed to detect automatic copying and assignment.
//
// This technique fails when the struct or class defines its own
// copy constructor or assignment operator unless that copy constructor
// or assignment operator also copy or assign the Noisy member.
//
// Example:
//
//    struct Payload {
//      std::string name;
//      Noisy x;   // the Noisy variable name doesn't matter.
//    };
//
//    ...
//    {
//      Payload p1;        // emits "Noisy c'tor"
//      Payload p2 = p1;   // emits "Noisy copy"
//    }                    // emits "Noisy destructor" twice

class Noisy {
public:
  Noisy() { std::cout << "Noisy c'tor" << std::endl; }
  Noisy(const Noisy &)
  {
    std::cout << "Noisy copy" << std::endl;
    // Nothing to copy
  }
  ~Noisy() { std::cout << "Noisy destructor" << std::endl; }
  Noisy & operator=(const Noisy &rhs)
  {
    std::cout << "Noisy =" << std::endl;
    if (this != &rhs) {
      // Nothing to do
    }
    return *this;
  }
};

#endif