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https://gitlab.kitware.com/vtk/vtk-m
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c3a3184d51
Sandia National Laboratories recently changed management from the Sandia Corporation to the National Technology & Engineering Solutions of Sandia, LLC (NTESS). The copyright statements need to be updated accordingly.
195 lines
5.8 KiB
C++
195 lines
5.8 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_cont_internal_IteratorFromArrayPortal_h
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#define vtk_m_cont_internal_IteratorFromArrayPortal_h
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#include <vtkm/Assert.h>
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#include <vtkm/cont/ArrayPortal.h>
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#include <vtkm/internal/ArrayPortalValueReference.h>
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namespace vtkm
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{
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namespace cont
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{
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namespace internal
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{
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template <class ArrayPortalType>
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class IteratorFromArrayPortal
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{
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public:
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using value_type = typename std::remove_const<typename ArrayPortalType::ValueType>::type;
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using reference = vtkm::internal::ArrayPortalValueReference<ArrayPortalType>;
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using pointer = typename std::add_pointer<value_type>::type;
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using difference_type = std::ptrdiff_t;
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using iterator_category = std::random_access_iterator_tag;
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using iter = IteratorFromArrayPortal<ArrayPortalType>;
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IteratorFromArrayPortal()
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: Portal()
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, Index(0)
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{
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}
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explicit IteratorFromArrayPortal(const ArrayPortalType& portal, vtkm::Id index = 0)
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: Portal(portal)
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, Index(index)
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{
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VTKM_ASSERT(index >= 0);
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VTKM_ASSERT(index <= portal.GetNumberOfValues());
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}
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reference operator*() const { return reference(this->Portal, this->Index); }
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reference operator->() const { return reference(this->Portal, this->Index); }
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reference operator[](difference_type idx) const
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{
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return reference(this->Portal, this->Index + static_cast<vtkm::Id>(idx));
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}
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iter& operator++()
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{
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this->Index++;
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VTKM_ASSERT(this->Index <= this->Portal.GetNumberOfValues());
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return *this;
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}
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iter operator++(int) { return iter(this->Portal, this->Index++); }
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iter& operator--()
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{
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this->Index--;
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VTKM_ASSERT(this->Index >= 0);
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return *this;
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}
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iter operator--(int) { return iter(this->Portal, this->Index--); }
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iter& operator+=(difference_type n)
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{
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this->Index += static_cast<vtkm::Id>(n);
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VTKM_ASSERT(this->Index <= this->Portal.GetNumberOfValues());
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return *this;
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}
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iter& operator-=(difference_type n)
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{
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this->Index += static_cast<vtkm::Id>(n);
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VTKM_ASSERT(this->Index >= 0);
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return *this;
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}
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iter operator-(difference_type n) const
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{
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return iter(this->Portal, this->Index - static_cast<vtkm::Id>(n));
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}
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ArrayPortalType Portal;
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vtkm::Id Index;
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};
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template <class ArrayPortalType>
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IteratorFromArrayPortal<ArrayPortalType> make_IteratorBegin(const ArrayPortalType& portal)
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{
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return IteratorFromArrayPortal<ArrayPortalType>(portal, 0);
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}
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template <class ArrayPortalType>
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IteratorFromArrayPortal<ArrayPortalType> make_IteratorEnd(const ArrayPortalType& portal)
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{
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return IteratorFromArrayPortal<ArrayPortalType>(portal, portal.GetNumberOfValues());
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}
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template <typename PortalType>
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bool operator==(vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& lhs,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& rhs)
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{
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return lhs.Index == rhs.Index;
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}
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template <typename PortalType>
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bool operator!=(vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& lhs,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& rhs)
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{
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return lhs.Index != rhs.Index;
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}
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template <typename PortalType>
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bool operator<(vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& lhs,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& rhs)
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{
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return lhs.Index < rhs.Index;
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}
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template <typename PortalType>
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bool operator<=(vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& lhs,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& rhs)
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{
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return lhs.Index <= rhs.Index;
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}
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template <typename PortalType>
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bool operator>(vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& lhs,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& rhs)
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{
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return lhs.Index > rhs.Index;
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}
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template <typename PortalType>
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bool operator>=(vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& lhs,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& rhs)
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{
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return lhs.Index >= rhs.Index;
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}
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template <typename PortalType>
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std::ptrdiff_t operator-(vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& lhs,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& rhs)
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{
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return lhs.Index - rhs.Index;
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}
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template <typename PortalType>
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> operator+(
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& iter,
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std::ptrdiff_t n)
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{
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return vtkm::cont::internal::IteratorFromArrayPortal<PortalType>(
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iter.Portal, iter.Index + static_cast<vtkm::Id>(n));
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}
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template <typename PortalType>
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> operator+(
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std::ptrdiff_t n,
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vtkm::cont::internal::IteratorFromArrayPortal<PortalType> const& iter)
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{
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return vtkm::cont::internal::IteratorFromArrayPortal<PortalType>(
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iter.Portal, iter.Index + static_cast<vtkm::Id>(n));
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}
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}
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}
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} // namespace vtkm::cont::internal
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#endif //vtk_m_cont_internal_IteratorFromArrayPortal_h
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