timestamp.hh

#ifndef VTESTBED_IGES_TIMESTAMP_HH
#define VTESTBED_IGES_TIMESTAMP_HH

#include <chrono>
#include <iosfwd>

#include <vtestbed/iges/types.hh>

namespace vtb {

    namespace iges {

        struct timestamp: public std::chrono::system_clock::time_point {

            typedef std::chrono::system_clock clock;
            typedef clock::time_point time_point;
            typedef clock::duration duration;
            using time_point::time_point;

            struct iges_date_pp {
                const timestamp& date;
            };

            timestamp() = default;
            ~timestamp() = default;

            inline
            timestamp(const time_point& tp):
            time_point(tp) {}

            timestamp&
            operator=(const time_point& rhs) {
                time_point::operator=(rhs);
                return *this;
            }

            inline void
            clear() {
                *this = time_point{duration::zero()};
            }

            inline bool
            empty() const noexcept {
                return *this == time_point{duration::zero()};
            }

            inline iges_date_pp
            print() const {
                return {*this};
            }

        };

        std::ostream&
        operator<<(std::ostream& out, const timestamp& rhs);

        std::istream&
        operator>>(std::istream& in, timestamp& rhs);

        std::ostream&
        operator<<(std::ostream& out, const timestamp::iges_date_pp& rhs);

        iges_ostream&
        operator<<(iges_ostream& out, const timestamp& rhs);

    }

}

#endif // vim:filetype=cpp