#ifndef TCG_PTR_WRAPPER

#define TCG_PTR_WRAPPER

// STD includes

#include <iterator></iterator>

namespace tcg

{

/*!

  \brief    The ptr_wrapper class implements the basic functions necessary

            to wrap a generic pointer object. The use case for this class

            is to allow pointer inheritance.

*/

template <typename t=""></typename>

class ptr

{

public:

	typedef T *ptr_type;

	typedef typename std::iterator_traits<ptr_type>::iterator_category iterator_category;</ptr_type>

	typedef typename std::iterator_traits<ptr_type>::value_type value_type;</ptr_type>

	typedef typename std::iterator_traits<ptr_type>::difference_type difference_type;</ptr_type>

	typedef typename std::iterator_traits<ptr_type>::pointer pointer;</ptr_type>

	typedef typename std::iterator_traits<ptr_type>::reference reference;</ptr_type>

public:

	explicit ptr(ptr_type p = ptr_type()) : m_ptr(p) {}

	operator bool() const { return m_ptr; } // There should be no need to use

											// the Safe Bool idiom

	bool operator==(const ptr &other) const { return (m_ptr == other.m_ptr); }

	bool operator!=(const ptr &other) const { return (m_ptr != other.m_ptr); }

	bool operator<(const ptr &other) const { return (m_ptr < other.m_ptr); }

	bool operator>(const ptr &other) const { return (m_ptr > other.m_ptr); }

	bool operator<=(const ptr &other) const { return (m_ptr <= other.m_ptr); }

	bool operator>=(const ptr &other) const { return (m_ptr >= other.m_ptr); }

	ptr &operator++()

	{

		++m_ptr;

		return *this;

	}

	ptr operator++(int) { return ptr(m_ptr++, *this); }

	ptr &operator--()

	{

		--m_ptr;

		return *this;

	}

	ptr operator--(int) { return ptr(m_ptr--, *this); }

	ptr operator+(difference_type d) const { return ptr(m_ptr + d, *this); }

	ptr &operator+=(difference_type d)

	{

		m_ptr += d;

		return *this;

	}

	ptr operator-(difference_type d) const { return ptr(m_ptr - d, *this); }

	ptr &operator-=(difference_type d)

	{

		m_ptr -= d;

		return *this;

	}

	difference_type operator-(const ptr &other) const { return m_ptr - other.m_ptr; }

	pointer operator->() const { return m_ptr; }

	reference operator*() const { return *m_ptr; }

	reference operator[](difference_type d) const { return m_ptr[d]; }

protected:

	ptr_type m_ptr;

};

//=======================================================

template <typename t=""></typename>

ptr<t> make_ptr(T *p) { return ptr<t>(p); }</t></t>

} // namespace tcg

#endif // TCG_PTR_WRAPPER