typeutilities.hh

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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#ifndef DUNE_COMMON_TYPEUTILITIES_HH
#define DUNE_COMMON_TYPEUTILITIES_HH
 
#include <cstddef>
#include <type_traits>
#include <tuple>
 
 
namespace Dune {
 
  namespace Impl
  {
 
    template<class This, class... T>
    struct disableCopyMoveHelper : public std::is_base_of<This, std::tuple_element_t<0, std::tuple<std::decay_t<T>...>>>
    {};
 
    template<class This>
    struct disableCopyMoveHelper<This> : public std::false_type
    {};
 
  } // namespace Impl
 
 
  template<class This, class... T>
  using disableCopyMove = std::enable_if_t< not Impl::disableCopyMoveHelper<This, T...>::value, int>;
 
 
 
  template<std::size_t priority>
  struct PriorityTag : public PriorityTag<priority-1>
  {
    static constexpr std::size_t value = priority;
  };
 
  template<>
  struct PriorityTag<0>
  {
    static constexpr std::size_t value = 0;
  };
 
 
 
} // namespace Dune
 
 
 
#endif // DUNE_COMMON_TYPEUTILITIES_HH