mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-16 17:22:55 +00:00
106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//
|
|
// Copyright 2014 Sandia Corporation.
|
|
// Copyright 2014 UT-Battelle, LLC.
|
|
// Copyright 2014. Los Alamos National Security
|
|
//
|
|
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
|
|
// the U.S. Government retains certain rights in this software.
|
|
//
|
|
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
|
|
// Laboratory (LANL), the U.S. Government retains certain rights in
|
|
// this software.
|
|
//============================================================================
|
|
#ifndef vtk_m_cont_internal_ArrayPortalFromIterators_h
|
|
#define vtk_m_cont_internal_ArrayPortalFromIterators_h
|
|
|
|
#include <vtkm/Types.h>
|
|
#include <vtkm/cont/ArrayPortal.h>
|
|
#include <vtkm/cont/Assert.h>
|
|
|
|
#include <iterator>
|
|
|
|
namespace vtkm {
|
|
namespace cont {
|
|
namespace internal {
|
|
|
|
/// This templated implementation of an ArrayPortal allows you to adapt a pair
|
|
/// of begin/end iterators to an ArrayPortal interface.
|
|
///
|
|
template<class IteratorT>
|
|
class ArrayPortalFromIterators
|
|
{
|
|
public:
|
|
typedef IteratorT IteratorType;
|
|
typedef typename std::iterator_traits<IteratorType>::value_type ValueType;
|
|
|
|
VTKM_CONT_EXPORT ArrayPortalFromIterators() { }
|
|
|
|
VTKM_CONT_EXPORT
|
|
ArrayPortalFromIterators(IteratorType begin, IteratorType end)
|
|
: BeginIterator(begin), EndIterator(end)
|
|
{
|
|
VTKM_ASSERT_CONT(this->GetNumberOfValues() >= 0);
|
|
}
|
|
|
|
/// Copy constructor for any other ArrayPortalFromIterators with an iterator
|
|
/// type that can be copied to this iterator type. This allows us to do any
|
|
/// type casting that the iterators do (like the non-const to const cast).
|
|
///
|
|
template<class OtherIteratorT>
|
|
VTKM_CONT_EXPORT
|
|
ArrayPortalFromIterators(const ArrayPortalFromIterators<OtherIteratorT> &src)
|
|
: BeginIterator(src.GetIteratorBegin()),
|
|
EndIterator(src.GetIteratorEnd())
|
|
{ }
|
|
|
|
VTKM_CONT_EXPORT
|
|
vtkm::Id GetNumberOfValues() const
|
|
{
|
|
return std::distance(this->BeginIterator, this->EndIterator);
|
|
}
|
|
|
|
VTKM_CONT_EXPORT
|
|
ValueType Get(vtkm::Id index) const
|
|
{
|
|
return *this->IteratorAt(index);
|
|
}
|
|
|
|
VTKM_CONT_EXPORT
|
|
void Set(vtkm::Id index, ValueType value) const
|
|
{
|
|
*this->IteratorAt(index) = value;
|
|
}
|
|
|
|
VTKM_CONT_EXPORT
|
|
IteratorType GetIteratorBegin() const { return this->BeginIterator; }
|
|
|
|
VTKM_CONT_EXPORT
|
|
IteratorType GetIteratorEnd() const { return this->EndIterator; }
|
|
|
|
private:
|
|
IteratorType BeginIterator;
|
|
IteratorType EndIterator;
|
|
|
|
VTKM_CONT_EXPORT
|
|
IteratorType IteratorAt(vtkm::Id index) const
|
|
{
|
|
VTKM_ASSERT_CONT(index >= 0);
|
|
VTKM_ASSERT_CONT(index < this->GetNumberOfValues());
|
|
|
|
return this->BeginIterator + index;
|
|
}
|
|
};
|
|
|
|
}
|
|
}
|
|
} // namespace vtkm::cont::internal
|
|
|
|
#endif //vtkm_cont_internal_ArrayPortalFromIterators_h
|