CVariableIter.h

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// -*- c++ -*-
//*****************************************************************************
//*****************************************************************************

// include basic definitions
#include "pbori_defs.h"

#ifndef CVariableIter_h_
#define CVariableIter_h_

BEGIN_NAMESPACE_PBORI

template <class Iterator, class VariableType> 
class CVariableIter {
public:
  typedef Iterator iterator_type;

  typedef VariableType var_type;

  typedef typename var_type::ring_type ring_type;

  typedef var_type value_type;


  typedef typename iterator_type::iterator_category iterator_category;
  //   typedef std::iterator_traits<iterator_type>::difference_type difference_type;
typedef int difference_type;
  typedef void pointer;
  typedef value_type reference;

  typedef CVariableIter<iterator_type, var_type> self;

  CVariableIter(): m_iter(), m_ring() {}

  CVariableIter(const iterator_type& rhs, const ring_type& ring): 
    m_iter(rhs), m_ring(ring) {}

  self& operator++() {
    ++m_iter;
    return *this;
  }

  self operator++(int) {  
      self copy=*this;
      ++(*this);
      return copy; }

  reference operator*() const {  return var_type(*m_iter, m_ring); }

  bool operator==(const self& rhs) const { 
    return  m_iter == rhs.m_iter;
  }

  bool operator!=(const self& rhs) const { 
    return m_iter != rhs.m_iter;
  }

protected:
  iterator_type m_iter;

  ring_type m_ring;
};

END_NAMESPACE_PBORI


#endif // CVariableIter_h_

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