sized_random_access_range.hpp

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/* This file is part of OpenKalman, a header-only C++ library for
 * Kalman filters and other recursive filters.
 *
 * Copyright (c) 2024-2025 Christopher Lee Ogden <ogden@gatech.edu>
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#ifndef OPENKALMAN_COLLECTIONS_SIZED_RANDOM_ACCESS_RANGE_HPP
#define OPENKALMAN_COLLECTIONS_SIZED_RANDOM_ACCESS_RANGE_HPP

#include <type_traits>
#ifdef __cpp_lib_ranges
#include <ranges>
#else
#include "basics/compatibility/ranges.hpp"
#endif
#include "sized.hpp"

namespace OpenKalman::collections
{
#if defined(__cpp_concepts) and defined(__cpp_lib_remove_cvref)
  template<typename T>
  concept sized_random_access_range = std::ranges::random_access_range<std::remove_cvref_t<T>> and sized<T>;
#else
  template<typename T>
  constexpr bool sized_random_access_range = ranges::random_access_range<remove_cvref_t<T>> and sized<T>;
#endif

} // OpenKalman::collections

#endif //OPENKALMAN_COLLECTIONS_SIZED_RANDOM_ACCESS_RANGE_HPP