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// Copyright (c) 1997
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1/Stream_support/include/CGAL/IO/Ostream_iterator.h $
// $Id: include/CGAL/IO/Ostream_iterator.h b26b07a1242 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Lutz Kettner <kettner@inf.ethz.ch>
#ifndef CGAL_IO_OSTREAM_ITERATOR_H
#define CGAL_IO_OSTREAM_ITERATOR_H
#include <CGAL/circulator.h>
namespace CGAL {
namespace Stream_support {
namespace internal {
// This proxy is for the Ostream_iterator.
template <class T, class Stream>
class Ostream_proxy
{
Stream& stream;
public:
Ostream_proxy(Stream& s) : stream(s) {}
Ostream_proxy<T, Stream>& operator=( const T& t)
{
stream << t;
return *this;
}
};
} // namespace Stream_support
} // namespace internal
/*!
\ingroup PkgStreamSupportRef
The class `Ostream_iterator` is an output iterator adaptor for the
output stream class `Stream` and value type `T`.
\cgalModels{OutputIterator}
\cgalHeading{Implementation}
The `operator*()` in class `Ostream_iterator` uses a proxy class.
*/
template <class T, class Stream>
class Ostream_iterator
{
Stream* stream;
public:
typedef T value_type;
typedef T& reference;
typedef const T& const_reference;
typedef T* pointer;
typedef const T* const_pointer;
typedef std::ptrdiff_t difference_type;
typedef std::output_iterator_tag iterator_category;
typedef Stream_support::internal::Ostream_proxy<T, Stream> Ostream_proxy;
/// \name Creation
/// @{
/*!
creates an output iterator writing to `s`.
*/
Ostream_iterator(Stream& s) : stream(&s) {}
/// @}
Ostream_iterator<T,Stream>& operator++() { return *this;}
Ostream_iterator<T,Stream> operator++(int) { return *this;}
Ostream_proxy operator*() const { return Ostream_proxy(*stream); }
};
} // namespace CGAL
#endif // CGAL_IO_OSTREAM_ITERATOR_H
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