95 class Time;      // Defined below  variable
100 constexpr Time FromUnixDuration(Duration d);
101 constexpr Duration ToUnixDuration(Time t);
602 class Time {
615   constexpr Time() = default;
618   constexpr Time(const Time& t) = default;
619   Time& operator=(const Time& t) = default;
622   Time& operator+=(Duration d) {
626   Time& operator-=(Duration d) {
670   friend H AbslHashValue(H h, Time t) {  in AbslHashValue()
675   friend constexpr Time time_internal::FromUnixDuration(Duration d);
676   friend constexpr Duration time_internal::ToUnixDuration(Time t);
677   friend constexpr bool operator<(Time lhs, Time rhs);
678   friend constexpr bool operator==(Time lhs, Time rhs);
679   friend Duration operator-(Time lhs, Time rhs);
680   friend constexpr Time UniversalEpoch();
681   friend constexpr Time InfiniteFuture();
682   friend constexpr Time InfinitePast();
683   constexpr explicit Time(Duration rep) : rep_(rep) {}  in Time()  function
688 constexpr bool operator<(Time lhs, Time rhs) { return lhs.rep_ < rhs.rep_; }
689 constexpr bool operator>(Time lhs, Time rhs) { return rhs < lhs; }
690 constexpr bool operator>=(Time lhs, Time rhs) { return !(lhs < rhs); }
691 constexpr bool operator<=(Time lhs, Time rhs) { return !(rhs < lhs); }
692 constexpr bool operator==(Time lhs, Time rhs) { return lhs.rep_ == rhs.rep_; }
693 constexpr bool operator!=(Time lhs, Time rhs) { return !(lhs == rhs); }
696 inline Time operator+(Time lhs, Duration rhs) { return lhs += rhs; }
697 inline Time operator+(Duration lhs, Time rhs) { return rhs += lhs; }
698 inline Time operator-(Time lhs, Duration rhs) { return lhs -= rhs; }
699 inline Duration operator-(Time lhs, Time rhs) { return lhs.rep_ - rhs.rep_; }
704 constexpr Time UnixEpoch() { return Time(); }  in UnixEpoch()
710 constexpr Time UniversalEpoch() {  in UniversalEpoch()
713   return Time(time_internal::MakeDuration(-24 * 719162 * int64_t{3600}, 0U));  in UniversalEpoch()
719 constexpr Time InfiniteFuture() {  in InfiniteFuture()
720   return Time(  in InfiniteFuture()
727 constexpr Time InfinitePast() {  in InfinitePast()
728   return Time(  in InfinitePast()
741 constexpr Time FromUnixNanos(int64_t ns);
742 constexpr Time FromUnixMicros(int64_t us);
743 constexpr Time FromUnixMillis(int64_t ms);
744 constexpr Time FromUnixSeconds(int64_t s);
745 constexpr Time FromTimeT(time_t t);
746 Time FromUDate(double udate);
747 Time FromUniversal(int64_t universal);
761 int64_t ToUnixNanos(Time t);
762 int64_t ToUnixMicros(Time t);
763 int64_t ToUnixMillis(Time t);
764 int64_t ToUnixSeconds(Time t);
765 time_t ToTimeT(Time t);
766 double ToUDate(Time t);
767 int64_t ToUniversal(Time t);
787 Time TimeFromTimespec(timespec ts);
788 Time TimeFromTimeval(timeval tv);
789 timespec ToTimespec(Time t);
790 timeval ToTimeval(Time t);
801 Time FromChrono(const std::chrono::system_clock::time_point& tp);
814 std::chrono::system_clock::time_point ToChronoTime(Time);
826 bool AbslParseFlag(absl::string_view text, Time* t, std::string* error);
827 std::string AbslUnparseFlag(Time t);
829 bool ParseFlag(const std::string& text, Time* t, std::string* error);
831 std::string UnparseFlag(Time t);
908   CivilInfo At(Time t) const;
930     Time pre;    // time calculated using the pre-transition offset
931     Time trans;  // when the civil-time discontinuity occurred
932     Time post;   // time calculated using the post-transition offset
1001   bool NextTransition(Time t, CivilTransition* trans) const;
1002   bool PrevTransition(Time t, CivilTransition* trans) const;
1076 inline CivilSecond ToCivilSecond(Time t, TimeZone tz) {  in ToCivilSecond()
1079 inline CivilMinute ToCivilMinute(Time t, TimeZone tz) {  in ToCivilMinute()
1082 inline CivilHour ToCivilHour(Time t, TimeZone tz) {  in ToCivilHour()
1085 inline CivilDay ToCivilDay(Time t, TimeZone tz) {  in ToCivilDay()
1088 inline CivilMonth ToCivilMonth(Time t, TimeZone tz) {  in ToCivilMonth()
1091 inline CivilYear ToCivilYear(Time t, TimeZone tz) {  in ToCivilYear()
1107 inline Time FromCivil(CivilSecond ct, TimeZone tz) {  in FromCivil()
1123   Time pre;    // time calculated using the pre-transition offset
1124   Time trans;  // when the civil-time discontinuity occurred
1125   Time post;   // time calculated using the post-transition offset
1174 inline Time FromDateTime(int64_t year, int mon, int day, int hour,  in FromDateTime()
1188 Time FromTM(const struct tm& tm, TimeZone tz);
1194 struct tm ToTM(Time t, TimeZone tz);
1255 std::string FormatTime(const std::string& format, Time t, TimeZone tz);
1260 std::string FormatTime(Time t, TimeZone tz);
1261 std::string FormatTime(Time t);
1264 inline std::ostream& operator<<(std::ostream& os, Time t) {
1316 bool ParseTime(const std::string& format, const std::string& input, Time* time,
1327                Time* time, std::string* err);
1393 constexpr Time FromUnixDuration(Duration d) { return Time(d); }  in FromUnixDuration()
1394 constexpr Duration ToUnixDuration(Time t) { return t.rep_; }  in ToUnixDuration()
1561 constexpr Time FromUnixNanos(int64_t ns) {  in FromUnixNanos()
1565 constexpr Time FromUnixMicros(int64_t us) {  in FromUnixMicros()
1569 constexpr Time FromUnixMillis(int64_t ms) {  in FromUnixMillis()
1573 constexpr Time FromUnixSeconds(int64_t s) {  in FromUnixSeconds()
1577 constexpr Time FromTimeT(time_t t) {  in FromTimeT()