mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
5ef4e7eeee
What was previously declared as `ArrayHandleNewStyle` is now just the implementation of `ArrayHandle`. The old implementation of `ArrayHandle` has been moved to `ArrayHandleDeprecated`, and `ArrayHandle`s still using this implementation must declare `VTKM_ARRAY_HANDLE_DEPRECATED` to use it.
302 lines
8.7 KiB
C++
302 lines
8.7 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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//
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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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#ifndef vtk_m_cont_ArrayHandleReverse_h
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#define vtk_m_cont_ArrayHandleReverse_h
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#include <vtkm/cont/ArrayExtractComponent.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ErrorBadType.h>
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#include <vtkm/cont/ErrorBadValue.h>
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#include <vtkm/Deprecated.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 <typename PortalType>
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class VTKM_ALWAYS_EXPORT ArrayPortalReverse
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{
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using Writable = vtkm::internal::PortalSupportsSets<PortalType>;
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public:
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using ValueType = typename PortalType::ValueType;
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VTKM_EXEC_CONT
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ArrayPortalReverse()
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: portal()
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{
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}
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VTKM_EXEC_CONT
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ArrayPortalReverse(const PortalType& p)
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: portal(p)
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{
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}
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template <typename OtherPortal>
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VTKM_EXEC_CONT ArrayPortalReverse(const ArrayPortalReverse<OtherPortal>& src)
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: portal(src.GetPortal())
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{
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}
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VTKM_EXEC_CONT
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vtkm::Id GetNumberOfValues() const { return this->portal.GetNumberOfValues(); }
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VTKM_EXEC_CONT
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ValueType Get(vtkm::Id index) const
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{
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return this->portal.Get(portal.GetNumberOfValues() - index - 1);
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}
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template <typename Writable_ = Writable,
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typename = typename std::enable_if<Writable_::value>::type>
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VTKM_EXEC_CONT void Set(vtkm::Id index, const ValueType& value) const
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{
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this->portal.Set(portal.GetNumberOfValues() - index - 1, value);
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}
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private:
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PortalType portal;
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};
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}
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template <typename StorageTag>
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class VTKM_ALWAYS_EXPORT StorageTagReverse
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{
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};
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namespace internal
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{
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namespace detail
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{
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template <typename T, typename ArrayOrStorage, bool IsArrayType>
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struct ReverseTypeArgImpl;
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template <typename T, typename Storage>
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struct ReverseTypeArgImpl<T, Storage, false>
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{
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using StorageTag = Storage;
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using ArrayHandle = vtkm::cont::ArrayHandle<T, StorageTag>;
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};
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template <typename T, typename Array>
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struct ReverseTypeArgImpl<T, Array, true>
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{
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VTKM_STATIC_ASSERT_MSG((std::is_same<T, typename Array::ValueType>::value),
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"Used array with wrong type in ArrayHandleReverse.");
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using StorageTag VTKM_DEPRECATED(
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1.6,
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"Use storage tag instead of array handle in StorageTagReverse.") = typename Array::StorageTag;
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using ArrayHandle VTKM_DEPRECATED(
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1.6,
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"Use storage tag instead of array handle in StorageTagReverse.") =
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vtkm::cont::ArrayHandle<T, typename Array::StorageTag>;
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};
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template <typename T, typename ArrayOrStorage>
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struct ReverseTypeArg
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: ReverseTypeArgImpl<T,
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ArrayOrStorage,
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vtkm::cont::internal::ArrayHandleCheck<ArrayOrStorage>::type::value>
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{
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};
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} // namespace detail
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template <typename T, typename ST>
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class Storage<T, StorageTagReverse<ST>>
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{
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using SourceStorage = Storage<T, typename detail::ReverseTypeArg<T, ST>::StorageTag>;
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public:
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using ArrayHandleType = typename detail::ReverseTypeArg<T, ST>::ArrayHandle;
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using ReadPortalType = ArrayPortalReverse<typename ArrayHandleType::ReadPortalType>;
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using WritePortalType = ArrayPortalReverse<typename ArrayHandleType::WritePortalType>;
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VTKM_CONT constexpr static vtkm::IdComponent GetNumberOfBuffers()
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{
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return SourceStorage::GetNumberOfBuffers();
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}
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VTKM_CONT static void ResizeBuffers(vtkm::Id numValues,
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vtkm::cont::internal::Buffer* buffers,
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vtkm::CopyFlag preserve,
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vtkm::cont::Token& token)
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{
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SourceStorage::ResizeBuffers(numValues, buffers, preserve, token);
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}
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VTKM_CONT static vtkm::Id GetNumberOfValues(const vtkm::cont::internal::Buffer* buffers)
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{
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return SourceStorage::GetNumberOfValues(buffers);
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}
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VTKM_CONT static ReadPortalType CreateReadPortal(const vtkm::cont::internal::Buffer* buffers,
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vtkm::cont::DeviceAdapterId device,
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vtkm::cont::Token& token)
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{
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return ReadPortalType(SourceStorage::CreateReadPortal(buffers, device, token));
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}
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VTKM_CONT static WritePortalType CreateWritePortal(vtkm::cont::internal::Buffer* buffers,
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vtkm::cont::DeviceAdapterId device,
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vtkm::cont::Token& token)
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{
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return WritePortalType(SourceStorage::CreateWritePortal(buffers, device, token));
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}
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}; // class storage
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} // namespace internal
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/// \brief Reverse the order of an array, on demand.
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///
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/// ArrayHandleReverse is a specialization of ArrayHandle. Given an ArrayHandle,
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/// it creates a new handle that returns the elements of the array in reverse
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/// order (i.e. from end to beginning).
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///
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template <typename ArrayHandleType>
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class ArrayHandleReverse
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: public vtkm::cont::ArrayHandle<typename ArrayHandleType::ValueType,
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StorageTagReverse<typename ArrayHandleType::StorageTag>>
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{
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public:
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VTKM_ARRAY_HANDLE_SUBCLASS(
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ArrayHandleReverse,
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(ArrayHandleReverse<ArrayHandleType>),
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(vtkm::cont::ArrayHandle<typename ArrayHandleType::ValueType,
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StorageTagReverse<typename ArrayHandleType::StorageTag>>));
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public:
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ArrayHandleReverse(const ArrayHandleType& handle)
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: Superclass(handle.GetBuffers())
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{
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}
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VTKM_CONT ArrayHandleType GetSourceArray() const
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{
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return vtkm::cont::ArrayHandle<ValueType, typename ArrayHandleType::StorageTag>(
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this->GetBuffers());
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}
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};
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/// make_ArrayHandleReverse is convenience function to generate an
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/// ArrayHandleReverse.
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///
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template <typename HandleType>
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VTKM_CONT ArrayHandleReverse<HandleType> make_ArrayHandleReverse(const HandleType& handle)
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{
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return ArrayHandleReverse<HandleType>(handle);
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}
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namespace internal
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{
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template <typename StorageTag>
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struct ArrayExtractComponentImpl<vtkm::cont::StorageTagReverse<StorageTag>>
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{
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template <typename T>
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using StrideArrayType =
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vtkm::cont::ArrayHandleStride<typename vtkm::VecTraits<T>::BaseComponentType>;
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template <typename T>
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StrideArrayType<T> operator()(
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const vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagReverse<StorageTag>>& src,
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vtkm::IdComponent componentIndex,
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vtkm::CopyFlag allowCopy) const
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{
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vtkm::cont::ArrayHandleReverse<vtkm::cont::ArrayHandle<T, StorageTag>> srcArray(src);
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StrideArrayType<T> subArray =
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ArrayExtractComponentImpl<StorageTag>{}(srcArray.GetSourceArray(), componentIndex, allowCopy);
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// Reverse the array by starting at the end and striding backward
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return StrideArrayType<T>(subArray.GetBasicArray(),
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srcArray.GetNumberOfValues(),
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-subArray.GetStride(),
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subArray.GetOffset() +
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(subArray.GetStride() * (subArray.GetNumberOfValues() - 1)),
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subArray.GetModulo(),
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subArray.GetDivisor());
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}
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};
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} // namespace internal
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}
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} // namespace vtkm::cont
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//=============================================================================
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// Specializations of serialization related classes
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/// @cond SERIALIZATION
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namespace vtkm
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{
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namespace cont
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{
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template <typename AH>
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struct SerializableTypeString<vtkm::cont::ArrayHandleReverse<AH>>
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{
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static VTKM_CONT const std::string& Get()
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{
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static std::string name = "AH_Reverse<" + SerializableTypeString<AH>::Get() + ">";
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return name;
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}
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};
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template <typename T, typename ST>
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struct SerializableTypeString<vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagReverse<ST>>>
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: SerializableTypeString<vtkm::cont::ArrayHandleReverse<vtkm::cont::ArrayHandle<T, ST>>>
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{
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};
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}
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} // vtkm::cont
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namespace mangled_diy_namespace
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{
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template <typename AH>
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struct Serialization<vtkm::cont::ArrayHandleReverse<AH>>
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{
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private:
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using Type = vtkm::cont::ArrayHandleReverse<AH>;
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using BaseType = vtkm::cont::ArrayHandle<typename Type::ValueType, typename Type::StorageTag>;
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public:
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static VTKM_CONT void save(BinaryBuffer& bb, const Type& obj)
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{
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vtkmdiy::save(bb, obj.GetSourceArray());
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}
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static VTKM_CONT void load(BinaryBuffer& bb, BaseType& obj)
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{
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AH array;
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vtkmdiy::load(bb, array);
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obj = vtkm::cont::make_ArrayHandleReverse(array);
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}
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};
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template <typename T, typename ST>
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struct Serialization<vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagReverse<ST>>>
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: Serialization<vtkm::cont::ArrayHandleReverse<vtkm::cont::ArrayHandle<T, ST>>>
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{
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};
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} // diy
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/// @endcond SERIALIZATION
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#endif // vtk_m_cont_ArrayHandleReverse_h
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