staticforloop.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-FileCopyrightText: Copyright © DUNE Project contributors, see file AUTHORS.md
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception OR LGPL-3.0-or-later
 
#ifndef DUNE_FUNCTIONS_COMMON_STATICFORLOOP_HH
#define DUNE_FUNCTIONS_COMMON_STATICFORLOOP_HH
 
 
#include <dune/common/concept.hh>
 
#include <dune/functions/common/type_traits.hh>
#include <dune/functions/functionspacebases/concepts.hh>
 
 
namespace Dune {
namespace Functions {
 
namespace Imp {
 
template<class ST, ST begin, ST end>
struct StaticFindInRange
{
  template<class F, class...Args>
  static void apply(F&& f, Args&&... args)
  {
    if (f(std::integral_constant<ST, begin>(), std::forward<Args>(args)...))
      return;
    StaticFindInRange<ST, begin+1, end>::apply(std::forward<F>(f), std::forward<Args>(args)...);
  }
};
 
template<class ST, ST end>
struct StaticFindInRange<ST, end, end>
{
  template<class F, class...Args>
  static void apply(F&& f, Args&&...)
  {}
};
 
} //end namespace Imp
 
 
 
template<std::size_t begin_t, std::size_t end_t, class F, class... Args>
void staticFindInRange(F&& f, Args&&... args)
{
  Imp::StaticFindInRange<std::size_t, begin_t, end_t>::apply(std::forward<F>(f), std::forward<Args>(args)...);
}
 
 
} // namespace Dune::Functions
} // namespace Dune
 
 
 
#endif //DUNE_FUNCTIONS_COMMON_STATICFORLOOP_HH