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// Copyright (c) 1999 Max-Planck-Institute Saarbruecken (Germany).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1.1/Convex_hull_2/include/CGAL/IO/Tee_for_output_iterator.h $
// $Id: include/CGAL/IO/Tee_for_output_iterator.h 08b27d3db14 $
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Stefan Schirra
#ifndef CGAL_IO_TEE_FOR_OUTPUT_ITERATOR_H
#define CGAL_IO_TEE_FOR_OUTPUT_ITERATOR_H
#include <CGAL/license/Convex_hull_2.h>
#include <CGAL/basic.h>
#include <iterator>
#include <vector>
#include <CGAL/Handle.h>
namespace CGAL {
template <class T> class _Tee_for_output_iterator_rep;
template <class OutputIterator, class T>
class Tee_for_output_iterator
: public Handle
{
typedef std::vector<T> container;
typedef typename container::iterator iterator;
typedef T value_type;
typedef std::output_iterator_tag iterator_category;
typedef std::iterator_traits<iterator> iter_traits;
typedef typename iter_traits::pointer pointer;
typedef typename iter_traits::reference reference;
public:
Tee_for_output_iterator(const OutputIterator& o) : o_it(o)
{ PTR = (Rep*) new _Tee_for_output_iterator_rep<T>(); }
Tee_for_output_iterator<OutputIterator,T>&
operator=(const T& value)
{
ptr()->output_so_far.push_back(value);
*o_it = value;
return *this;
}
Tee_for_output_iterator<OutputIterator,T>&
operator*()
{ return *this; }
Tee_for_output_iterator<OutputIterator,T>&
operator++()
{
++o_it;
return *this;
}
Tee_for_output_iterator<OutputIterator,T>
operator++(int)
{
Tee_for_output_iterator<OutputIterator,T> tmp = *this;
o_it++;
return tmp;
}
iterator
output_so_far_begin()
{ return ptr()->output_so_far.begin(); }
iterator
output_so_far_end()
{ return ptr()->output_so_far.end(); }
OutputIterator&
to_output_iterator()
{ return o_it; }
_Tee_for_output_iterator_rep<T>*
ptr()
{ return (_Tee_for_output_iterator_rep<T>*)PTR; }
protected:
OutputIterator o_it;
};
template <class T>
class _Tee_for_output_iterator_rep : public Rep
{
public:
std::vector<T> output_so_far;
};
} //namespace CGAL
#endif // CGAL_IO_TEE_FOR_OUTPUT_ITERATOR_H
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