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// Copyright (c) 2005 INRIA (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/next/Surface_mesh_parameterization/include/CGAL/Convertible_iterator_project.h $
// $Id: Convertible_iterator_project.h 67117 2012-01-13 18:14:48Z lrineau $
//
//
// Author(s) : Laurent Saboret, Pierre Alliez, Bruno Levy
#ifndef CGAL_CONVERTIBLE_ITERATOR_PROJECT_H
#define CGAL_CONVERTIBLE_ITERATOR_PROJECT_H
#include <CGAL/Iterator_project.h>
namespace CGAL {
/// This class inherits from Iterator_project<> +
/// adds a conversion to handle/const handle.
/// See Iterator_project<> documentation.
template<class I, ///< Internal iterator.
class Fct, ///< Conversion functor.
class ConstHandle, ///< Const-handle type to convert to.
class Handle = void* ///< Non-const-handle type to convert to (void*=none).
>
class Convertible_iterator_project
: public Iterator_project<I, Fct>
{
typedef Iterator_project<I, Fct> Base;
typedef Convertible_iterator_project Self;
public:
/// CREATION
/// --------
Convertible_iterator_project() {}
Convertible_iterator_project(Base base) : Base(base) {}
Convertible_iterator_project(const Self& it) : Base(it) {}
Self& operator=(const Self& it) { Base::operator=(it); return *this; }
/// OPERATIONS Forward Category
/// ---------------------------
bool operator==(Nullptr_t ptr) const { return (const Base&)*this == ptr; }
bool operator!=(Nullptr_t ptr) const { return ! (*this == ptr); }
bool operator==(const Self& it) const { return (const Base&)*this == it; }
bool operator!=(const Self& it) const { return ! (*this == it); }
Self& operator++() { Base::operator++(); return *this; }
Self operator++(int) { Self tmp(*this); ++(*this); return tmp; }
/// OPERATIONS Bidirectional Category
/// ---------------------------------
Self& operator--() { Base::operator--(); return *this; }
Self operator--(int) { Self tmp(*this); --(*this); return tmp; }
/// EXTRA CASTS
/// -----------
operator Handle() { return Base::operator->(); }
operator ConstHandle() const { return Base::operator->(); }
};
} //namespace CGAL
#endif //CGAL_CONVERTIBLE_ITERATOR_PROJECT_H
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