// File: scope_detector.h
// Author: Chris Gill
// Purpose: header file for memory management profiling classes
//          (See exercise 2 of the basic memory management studio)

#ifndef SCOPE_DETECTOR_H
#define SCOPE_DETECTOR_H

#include <iostream> 

// Symbols used from standard namespace.
using namespace std;

class ScopeDetector {

  // note controlled violation of encapsulation: reference counted guard class and
  // ostream insertion operator are both designed to work closely with this class
  friend class SafeRefCountedGuard;
  friend ostream & operator << (ostream &, const ScopeDetector &);

  public: 

    ScopeDetector (); // default constructor
    ScopeDetector (const ScopeDetector &sd); // copy constructor

    ~ScopeDetector (); // destructor

    ScopeDetector & operator= (const ScopeDetector &sd); // assignment operator

    bool operator== (const ScopeDetector &sd) const; // equivalence comparison operator
    bool operator< (const ScopeDetector &sd) const; // less than comparison operator

  private:

    static unsigned int count_;
    unsigned int i_;
    unsigned int ref_count_;

};


ostream & operator << (ostream &, const ScopeDetector &);


#endif /* SCOPE_DETECTOR_H */