Program Listing for File padding_loader.hpp

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#ifndef RIPPLE_PADDING_PADDING_LOADER_HPP
#define RIPPLE_PADDING_PADDING_LOADER_HPP

#include <ripple/iterator/iterator_traits.hpp>
#include <ripple/utility/portability.hpp>

namespace ripple {

template <typename Impl>
class PaddingLoader {
  ripple_all constexpr auto impl() const noexcept -> const Impl* {
    return static_cast<const Impl*>(this);
  }

 protected:
  template <typename Iterator>
  ripple_all auto
  static_assert_iterator(Iterator&&) const noexcept -> void {
    static_assert(
      is_iterator_v<Iterator>,
      "Padding loader requires a parameter which is an iterator!");
  }

 public:
  template <typename Iterator, typename Dim, typename... Args>
  ripple_all constexpr auto
  load_front(Iterator&& it, int index, Dim&& dim, Args&&... args) const noexcept
    -> void {
    impl()->load_front(
      ripple_forward(it), index, ripple_forward(dim), ripple_forward(args)...);
  }

  template <typename Iterator, typename Dim, typename... Args>
  ripple_all constexpr auto
  load_back(Iterator&& it, int index, Dim&& dim, Args&&... args) const noexcept
    -> void {
    impl()->load_back(
      ripple_forward(it), index, ripple_forward(dim), ripple_forward(args)...);
  }
};

template <typename T>
static constexpr bool is_loader_v =
  std::is_base_of_v<PaddingLoader<std::decay_t<T>>, std::decay_t<T>>;

} // namespace ripple

#endif // RIPPLE_PADDING_PADDING_LOADER_HPP