mirror of
https://gitlab.kitware.com/vtk/vtk-m
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122 lines
3.9 KiB
C++
122 lines
3.9 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 Sandia Corporation.
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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-AC04-94AL85000 with Sandia Corporation,
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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_ListTag_h
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#define vtk_m_ListTag_h
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#include <vtkm/internal/ListTagDetail.h>
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#include <vtkm/StaticAssert.h>
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#include <vtkm/internal/ExportMacros.h>
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#include <type_traits>
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namespace vtkm {
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namespace internal {
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template<typename ListTag>
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struct ListTagCheck : std::is_base_of<vtkm::detail::ListRoot,ListTag>
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{
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static VTKM_CONSTEXPR bool Valid = std::is_base_of<vtkm::detail::ListRoot,
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ListTag>::value;
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};
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} // namespace internal
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/// Checks that the argument is a proper list tag. This is a handy concept
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/// check for functions and classes to make sure that a template argument is
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/// actually a device adapter tag. (You can get weird errors elsewhere in the
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/// code when a mistake is made.)
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///
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#define VTKM_IS_LIST_TAG(tag) \
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VTKM_STATIC_ASSERT_MSG( \
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(::vtkm::internal::ListTagCheck<tag>::value), \
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"Provided type is not a valid VTK-m list tag.")
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/// A special tag for a list that represents holding all potential values
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///
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/// Note: Can not be used with ForEach for obvious reasons.
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struct ListTagUniversal : detail::ListRoot {
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using list = vtkm::detail::ListBase<vtkm::detail::UniversalTag>;
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};
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/// A special tag for an empty list.
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///
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struct ListTagEmpty : detail::ListRoot {
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using list = vtkm::detail::ListBase<>;
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};
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/// A tag that is a construction of two other tags joined together. This struct
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/// can be subclassed and still behave like a list tag.
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template<typename ListTag1, typename ListTag2>
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struct ListTagJoin : detail::ListRoot {
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using list = typename detail::ListJoin<
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typename ListTag1::list,
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typename ListTag2::list>::type;
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};
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/// A tag that consits of elements that are found in both tags. This struct
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/// can be subclassed and still behave like a list tag.
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template<typename ListTag1, typename ListTag2>
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struct ListTagIntersect : detail::ListRoot {
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using list = typename detail::ListIntersect<
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typename ListTag1::list,
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typename ListTag2::list>::type;
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};
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/// For each typename represented by the list tag, call the functor with a
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/// default instance of that type.
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///
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template<typename Functor, typename ListTag>
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VTKM_CONT
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void ListForEach(Functor &f, ListTag)
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{
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VTKM_IS_LIST_TAG(ListTag);
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detail::ListForEachImpl(f, typename ListTag::list());
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}
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/// For each typename represented by the list tag, call the functor with a
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/// default instance of that type.
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///
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template<typename Functor, typename ListTag>
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VTKM_CONT
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void ListForEach(const Functor &f, ListTag)
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{
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VTKM_IS_LIST_TAG(ListTag);
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detail::ListForEachImpl(f, typename ListTag::list());
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}
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/// Checks to see if the given \c Type is in the list pointed to by \c ListTag.
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/// There is a static boolean named \c value that is set to true if the type is
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/// contained in the list and false otherwise.
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///
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template<typename ListTag, typename Type>
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struct ListContains
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{
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VTKM_IS_LIST_TAG(ListTag);
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static VTKM_CONSTEXPR bool value =
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detail::ListContainsImpl<Type,typename ListTag::list>::value;
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};
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} // namespace vtkm
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#endif //vtk_m_ListTag_h
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