traits.hpp

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/**
 * @file
 * @ingroup ipcq_detail
 * @brief Basic implementation detail traits
 * @copyright
 *   SPDX-FileCopyrightText: 2019-2020 European Southern Observatory (ESO)
 *
 *   SPDX-License-Identifier: LGPL-3.0-only
 */
#ifndef IPCQ_DETAIL_TRAITS_HPP_
#define IPCQ_DETAIL_TRAITS_HPP_
 
namespace ipcq::detail {
 
/**
 * Shared memory queue iterator trait for non-const iterator.
 *
 * @ingroup ipcq_detail
 */
template <class T>
struct NonConstTraits {
    using value_type = T;
    using pointer = value_type*;
    using reference = value_type&;
    using size_type = size_t;
    using difference_type = std::ptrdiff_t;
};
 
/**
 * Shared memory queue iterator trait for const iterator.
 *
 * @ingroup ipcq_detail
 */
template <class T>
struct ConstTraits {
    using value_type = T;
    using pointer = const value_type*;
    using reference = const value_type&;
    using size_type = size_t;
    using difference_type = std::ptrdiff_t;
};
}  // namespace ipcq::detail
#endif  // #ifndef IPCQ_DETAIL_TRAITS_HPP_