integer_sequence.hpp

// Copyright (c) 2000-2023 TeamDev Ltd. All rights reserved.
// TeamDev PROPRIETARY and CONFIDENTIAL.
// Use is subject to license terms.
 
#ifndef MOLYBDEN_INTEGER_SEQUENCE_HPP
#define MOLYBDEN_INTEGER_SEQUENCE_HPP
 
#include <cstddef>
 
namespace molybden {
namespace internal {
 
template <typename T, T... Ints>
struct integer_sequence {
  using value_type = T;
 
  static constexpr std::size_t size() { return sizeof...(Ints); }
};
 
template <std::size_t... Ints>
using index_sequence = integer_sequence<std::size_t, Ints...>;
 
template <typename T, std::size_t N, T... Is>
struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Is...> {};
 
template <typename T, T... Is>
struct make_integer_sequence<T, 0, Is...> : integer_sequence<T, Is...> {};
 
template <std::size_t N>
using make_index_sequence = make_integer_sequence<std::size_t, N>;
 
template <typename... T>
using index_sequence_for = make_index_sequence<sizeof...(T)>;
 
}  // namespace internal
}  // namespace molybden
 
#endif  // MOLYBDEN_INTEGER_SEQUENCE_HPP