ControlSignatureTagBase.h

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//============================================================================
//  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.
//============================================================================
#ifndef vtk_m_cont_arg_ControlSignatureTagBase_h
#define vtk_m_cont_arg_ControlSignatureTagBase_h
 
#include <vtkm/StaticAssert.h>
#include <vtkm/internal/ExportMacros.h>
 
#include <type_traits>
 
namespace vtkm
{
namespace cont
{
namespace arg
{
 
struct ControlSignatureTagBase
{
};
 
namespace internal
{
 
template <typename ControlSignatureTag>
struct ControlSignatureTagCheck
{
  static constexpr bool Valid =
    std::is_base_of<vtkm::cont::arg::ControlSignatureTagBase, ControlSignatureTag>::value;
};
 
} // namespace internal
 
#define VTKM_IS_CONTROL_SIGNATURE_TAG(tag)                                                  \
  VTKM_STATIC_ASSERT_MSG(::vtkm::cont::arg::internal::ControlSignatureTagCheck<tag>::Valid, \
                         "Provided a type that is not a valid ControlSignature tag.")
}
}
} // namespace vtkm::cont::arg
 
#endif //vtk_m_cont_arg_ControlSignatureTagBase_h