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iterator_array.hh
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/**
* @file iterator_array.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date Thu Sep 06 20:05:31 2012
*
* @brief Iterator over contiguous arrays
*
* @section LICENSE
*
* Copyright INRIA and CEA
*
* The LibMultiScale is a C++ parallel framework for the multiscale
* coupling methods dedicated to material simulations. This framework
* provides an API which makes it possible to program coupled simulations
* and integration of already existing codes.
*
* This Project was initiated in a collaboration between INRIA Futurs Bordeaux
* within ScAlApplix team and CEA/DPTA Ile de France.
* The project is now continued at the Ecole Polytechnique Fédérale de Lausanne
* within the LSMS/ENAC laboratory.
*
* This software is governed by the CeCILL-C license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/ or redistribute the software under the terms of the CeCILL-C
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty and the software's author, the holder of the
* economic rights, and the successive licensors have only limited
* liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading, using, modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean that it is complicated to manipulate, and that also
* therefore means that it is reserved for developers and experienced
* professionals having in-depth computer knowledge. Users are therefore
* encouraged to load and test the software's suitability as regards their
* requirements in conditions enabling the security of their systems and/or
* data to be ensured and, more generally, to use and operate it in the
* same conditions as regards security.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL-C license and that you accept its terms.
*
*/
#ifndef __LIBMULTISCALE_ITERATOR_ARRAY_HH__
#define __LIBMULTISCALE_ITERATOR_ARRAY_HH__
/* -------------------------------------------------------------------------- */
#include "container_array.hh"
#include "lm_common.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_LIBMULTISCALE__
/**
* Class IteratorArray
* Generic iterator over array containers
*/
template <typename T> class ContainerArrayIterator : public iterator_base<T> {
public:
using iterator_category = std::random_access_iterator_tag;
using value_type = T;
using iterator = ContainerArrayIterator<T>;
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
ContainerArrayIterator(T *ptr);
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
//! get fist item
T &operator*() { return *ptr; }
//! get next item in course
iterator_base<T> &operator++() override;
iterator_base<T> &operator--();
bool operator!=(const iterator_base<T> &) const override;
bool operator==(const iterator_base<T> &) const override;
iterator operator+(UInt n) { return iterator(ptr + n); };
iterator operator-(UInt n) { return ptr - n; };
int operator-(const iterator &it) { return ptr - it.ptr; };
bool operator<(const iterator &it) { return ptr < it.ptr; };
bool operator>(const iterator &it) { return ptr > it.ptr; };
iterator operator[](UInt n) { return ptr[n]; };
private:
T *ptr;
};
/* -------------------------------------------------------------------------- */
template <typename T>
ContainerArrayIterator<T>::ContainerArrayIterator(T *ptr) {
this->ptr = ptr;
}
/* -------------------------------------------------------------------------- */
template <typename T>
iterator_base<T> &ContainerArrayIterator<T>::operator++() {
++ptr;
return *this;
}
/* -------------------------------------------------------------------------- */
template <typename T>
iterator_base<T> &ContainerArrayIterator<T>::operator--() {
--ptr;
return *this;
}
/* -------------------------------------------------------------------------- */
template <typename T>
bool ContainerArrayIterator<T>::operator!=(const iterator_base<T> &it) const {
return (this->ptr != static_cast<const iterator &>(it).ptr);
}
/* -------------------------------------------------------------------------- */
template <typename T>
bool ContainerArrayIterator<T>::operator==(const iterator_base<T> &it) const {
return (this->ptr == static_cast<const iterator &>(it).ptr);
}
/* -------------------------------------------------------------------------- */
__END_LIBMULTISCALE__
namespace std {
template <typename T>
struct iterator_traits<::libmultiscale::ContainerArrayIterator<T>> {
using value_type = T;
using iterator_category = random_access_iterator_tag;
using difference_type = int;
using pointer = T *;
using reference = T &;
};
} // namespace std
#endif /* __LIBMULTISCALE_ITERATOR_ARRAY_HH__ */

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