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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#ifndef DUNE_COMMON_DUMMYITERATOR_HH
#define DUNE_COMMON_DUMMYITERATOR_HH
#include <cstddef>
#include <type_traits>
#include <dune/common/iteratorfacades.hh>
template<typename T>
class dummyiterator
: public Dune::BidirectionalIteratorFacade<dummyiterator<T>, T, T&,
std::ptrdiff_t>
{
friend class dummyiterator<const typename std::remove_const<T>::type>;
T *value;
public:
dummyiterator(T& value_)
: value(&value_)
{}
template<typename T2>
dummyiterator
( const dummyiterator<T2>& o,
typename std::enable_if<std::is_convertible<T2&, T&>::value>::type* = 0)
: value(o.value)
{}
T& dereference() const {
return *value;
}
bool equals(const dummyiterator& o) const {
return value == o.value;
}
void increment() {}
void decrement() {}
};
#endif // DUNE_COMMON_DUMMYITERATOR_HH
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