cppcore/include/cppcore/conversion/time.h

#pragma once

#include <chrono>
#include <utility>

namespace cppcore
{

    namespace __impl
    {

        /**
         * @brief Helper class to convert time values.
         */
        template<class From, class To>
        struct op_convert_time;

    }

    /**
     * @brief Cast a chrono duration to a timeval.
     *
     * @param[in] d     Chrono duration to cast.
     *
     * @return          Casted timeval.
     */
    template<typename T, typename Rep, typename Period>
    inline auto duration_cast(const std::chrono::duration<Rep, Period>& d)
        -> std::enable_if_t<std::is_same<T, ::timeval>::value, ::timeval>;


    /**
     * @brief Cast a chrono duration to a timespec.
     *
     * @param[in] d     Chrono duration to cast.
     *
     * @return          Casted timespec.
     */
    template<typename T, typename Rep, typename Period>
    inline auto duration_cast(const std::chrono::duration<Rep, Period>& d)
        -> std::enable_if_t<std::is_same<T, ::timespec>::value, ::timespec>;

    /**
     * @brief Cast a timeval to a chrono duration.
     *
     * @param[in] tv    Timeval to cast to chrono duration.
     *
     * @return          Casted chrono duration.
     */
    template<typename Duration>
    Duration duration_cast(const ::timeval& tv);

    /**
     * @brief Cast a timespec to a chrono duration.
     *
     * @param[in] ts    Timespec to cast to chrono duration.
     *
     * @return          Casted chrono duration.
     */
    template<typename Duration>
    Duration duration_cast(const ::timespec& ts);

}

#include "time.inl"