From 3ad39e9878310e5317ee73c9b353c1e2c1c5c4ee Mon Sep 17 00:00:00 2001 From: Richard Qin Date: Sat, 11 Jul 2026 22:48:30 +0800 Subject: lib: establish Zircon libc++ and KTL foundation --- third_party/libcxx/include/c++/v1/chrono | 1176 ++++++++++++++++++++++++++++++ 1 file changed, 1176 insertions(+) create mode 100644 third_party/libcxx/include/c++/v1/chrono (limited to 'third_party/libcxx/include/c++/v1/chrono') diff --git a/third_party/libcxx/include/c++/v1/chrono b/third_party/libcxx/include/c++/v1/chrono new file mode 100644 index 0000000..abb678e --- /dev/null +++ b/third_party/libcxx/include/c++/v1/chrono @@ -0,0 +1,1176 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP_CHRONO +#define _LIBCPP_CHRONO + +// clang-format off + +/* + chrono synopsis + +#include // C++20 + +namespace std +{ +namespace chrono +{ + +template +constexpr +ToDuration +duration_cast(const duration& fd); + +template struct treat_as_floating_point : is_floating_point {}; + +template inline constexpr bool treat_as_floating_point_v + = treat_as_floating_point::value; // C++17 + +template +struct duration_values +{ +public: + static constexpr Rep zero(); // noexcept in C++20 + static constexpr Rep max(); // noexcept in C++20 + static constexpr Rep min(); // noexcept in C++20 +}; + +// duration + +template > +class duration +{ + static_assert(!__is_duration::value, "A duration representation can not be a duration"); + static_assert(__is_ratio::value, "Second template parameter of duration must be a std::ratio"); + static_assert(Period::num > 0, "duration period must be positive"); +public: + typedef Rep rep; + typedef typename _Period::type period; + + constexpr duration() = default; + template + constexpr explicit duration(const Rep2& r, + typename enable_if + < + is_convertible::value && + (treat_as_floating_point::value || + !treat_as_floating_point::value && !treat_as_floating_point::value) + >::type* = 0); + + // conversions + template + constexpr duration(const duration& d, + typename enable_if + < + treat_as_floating_point::value || + ratio_divide::type::den == 1 + >::type* = 0); + + // observer + + constexpr rep count() const; + + // arithmetic + + constexpr common_type::type operator+() const; + constexpr common_type::type operator-() const; + constexpr duration& operator++(); // constexpr in C++17 + constexpr duration operator++(int); // constexpr in C++17 + constexpr duration& operator--(); // constexpr in C++17 + constexpr duration operator--(int); // constexpr in C++17 + + constexpr duration& operator+=(const duration& d); // constexpr in C++17 + constexpr duration& operator-=(const duration& d); // constexpr in C++17 + + duration& operator*=(const rep& rhs); // constexpr in C++17 + duration& operator/=(const rep& rhs); // constexpr in C++17 + duration& operator%=(const rep& rhs); // constexpr in C++17 + duration& operator%=(const duration& rhs); // constexpr in C++17 + + // special values + + static constexpr duration zero(); // noexcept in C++20 + static constexpr duration min(); // noexcept in C++20 + static constexpr duration max(); // noexcept in C++20 +}; + +typedef duration nanoseconds; +typedef duration microseconds; +typedef duration milliseconds; +typedef duration seconds; +typedef duration< long, ratio< 60> > minutes; +typedef duration< long, ratio<3600> > hours; + +template +class time_point +{ +public: + typedef Clock clock; + typedef Duration duration; + typedef typename duration::rep rep; + typedef typename duration::period period; +private: + duration d_; // exposition only + +public: + time_point(); // has value "epoch" // constexpr in C++14 + explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14 + + // conversions + template + time_point(const time_point& t); // constexpr in C++14 + + // observer + + duration time_since_epoch() const; // constexpr in C++14 + + // arithmetic + + constexpr time_point& operator++(); // C++20 + constexpr time_point operator++(int); // C++20 + constexpr time_point& operator--(); // C++20 + constexpr time_point operator--(int); // C++20 + + time_point& operator+=(const duration& d); // constexpr in C++17 + time_point& operator-=(const duration& d); // constexpr in C++17 + + // special values + + static constexpr time_point min(); // noexcept in C++20 + static constexpr time_point max(); // noexcept in C++20 +}; + +} // chrono + +// common_type traits +template + struct common_type, chrono::duration>; + +template + struct common_type, chrono::time_point>; + +namespace chrono { + +// duration arithmetic +template + constexpr + typename common_type, duration>::type + operator+(const duration& lhs, const duration& rhs); +template + constexpr + typename common_type, duration>::type + operator-(const duration& lhs, const duration& rhs); +template + constexpr + duration::type, Period> + operator*(const duration& d, const Rep2& s); +template + constexpr + duration::type, Period> + operator*(const Rep1& s, const duration& d); +template + constexpr + duration::type, Period> + operator/(const duration& d, const Rep2& s); +template + constexpr + typename common_type::type + operator/(const duration& lhs, const duration& rhs); + +// duration comparisons +template + constexpr + bool operator==(const duration& lhs, const duration& rhs); +template + constexpr + bool operator!=(const duration& lhs, const duration& rhs); // removed in C++20 +template + constexpr + bool operator< (const duration& lhs, const duration& rhs); +template + constexpr + bool operator<=(const duration& lhs, const duration& rhs); +template + constexpr + bool operator> (const duration& lhs, const duration& rhs); +template + constexpr + bool operator>=(const duration& lhs, const duration& rhs); +template + requires three_way_comparable + constexpr auto operator<=>(const duration& lhs, + const duration& rhs); // since C++20 + +// duration_cast +template + ToDuration duration_cast(const duration& d); + +template + constexpr ToDuration floor(const duration& d); // C++17 +template + constexpr ToDuration ceil(const duration& d); // C++17 +template + constexpr ToDuration round(const duration& d); // C++17 + +template struct is_clock; // C++20 +template inline constexpr bool is_clock_v = is_clock::value; // C++20 + +// duration I/O +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, + const duration& d); + +// time_point arithmetic (all constexpr in C++14) +template + time_point>::type> + operator+(const time_point& lhs, const duration& rhs); +template + time_point, Duration2>::type> + operator+(const duration& lhs, const time_point& rhs); +template + time_point>::type> + operator-(const time_point& lhs, const duration& rhs); +template + typename common_type::type + operator-(const time_point& lhs, const time_point& rhs); + +// time_point comparisons (all constexpr in C++14) +template + bool operator==(const time_point& lhs, const time_point& rhs); +template + bool operator!=(const time_point& lhs, const time_point& rhs); // removed in C++20 +template + bool operator< (const time_point& lhs, const time_point& rhs); +template + bool operator<=(const time_point& lhs, const time_point& rhs); +template + bool operator> (const time_point& lhs, const time_point& rhs); +template + bool operator>=(const time_point& lhs, const time_point& rhs); +template Duration2> + constexpr auto operator<=>(const time_point& lhs, + const time_point& rhs); // since C++20 + +// time_point_cast (constexpr in C++14) + +template + time_point time_point_cast(const time_point& t); + +template + constexpr time_point + floor(const time_point& tp); // C++17 + +template + constexpr time_point + ceil(const time_point& tp); // C++17 + +template + constexpr time_point + round(const time_point& tp); // C++17 + +template + constexpr duration abs(duration d); // C++17 + +// Clocks + +class system_clock +{ +public: + typedef microseconds duration; + typedef duration::rep rep; + typedef duration::period period; + typedef chrono::time_point time_point; + static const bool is_steady = false; // constexpr in C++14 + + static time_point now() noexcept; + static time_t to_time_t (const time_point& __t) noexcept; + static time_point from_time_t(time_t __t) noexcept; +}; + +template + using sys_time = time_point; // C++20 +using sys_seconds = sys_time; // C++20 +using sys_days = sys_time; // C++20 + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const sys_time& tp); + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const sys_days& dp); + +// [time.clock.utc], class utc_clock +class utc_clock { // C++20 +public: + using rep = a signed arithmetic type; + using period = ratio; + using duration = chrono::duration; + using time_point = chrono::time_point; + static constexpr bool is_steady = unspecified; + + static time_point now(); + + template + static sys_time> + to_sys(const utc_time& t); + template + static utc_time> + from_sys(const sys_time& t); +}; + +template +using utc_time = time_point; // C++20 +using utc_seconds = utc_time; // C++20 + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const utc_time& t); + +struct leap_second_info { // C++20 + bool is_leap_second; + seconds elapsed; +}; + +template // C++20 + leap_second_info get_leap_second_info(const utc_time& ut); + + +// [time.clock.tai], class tai_clock +class tai_clock { // C++20 +public: + using rep = a signed arithmetic type; + using period = ratio; + using duration = chrono::duration; + using time_point = chrono::time_point; + static constexpr bool is_steady = unspecified; + + static time_point now(); + + template + static utc_time> + to_utc(const tai_time& t); + template + static tai_time> + from_utc(const utc_time& t); +}; + +template +using tai_time = time_point; // C++20 +using tai_seconds = tai_time; // C++20 + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const tai_time& t); + +// [time.clock.gps], class gps_clock +class gps_clock { // C++20 +public: + using rep = a signed arithmetic type; + using period = ratio; + using duration = chrono::duration; + using time_point = chrono::time_point; + static constexpr bool is_steady = unspecified; + + static time_point now(); + + template + static utc_time> + to_utc(const gps_time& t); + template + static gps_time> + from_utc(const utc_time& t); +}; + +template +using gps_time = time_point; // C++20 +using gps_seconds = gps_time; // C++20 + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const gps_time& t); + +class file_clock // C++20 +{ +public: + typedef see-below rep; + typedef nano period; + typedef chrono::duration duration; + typedef chrono::time_point time_point; + static constexpr bool is_steady = false; + + static time_point now() noexcept; + + template + static sys_time to_sys(const file_time&); + + template + static file_time from_sys(const sys_time&); +}; + +template + using file_time = time_point; // C++20 + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const file_time& tp); + +class steady_clock +{ +public: + typedef nanoseconds duration; + typedef duration::rep rep; + typedef duration::period period; + typedef chrono::time_point time_point; + static const bool is_steady = true; // constexpr in C++14 + + static time_point now() noexcept; +}; + +typedef steady_clock high_resolution_clock; + +// [time.clock.local] local time // C++20 +struct local_t {}; +template + using local_time = time_point; +using local_seconds = local_time; +using local_days = local_time; + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const local_time& tp); + +// [time.cal.last] class last_spec // C++20 +struct last_spec; + +// [time.cal.day] class day // C++20 + +class day; +constexpr bool operator==(const day& x, const day& y) noexcept; +constexpr strong_ordering operator<=>(const day& x, const day& y) noexcept; +constexpr day operator+(const day& x, const days& y) noexcept; +constexpr day operator+(const days& x, const day& y) noexcept; +constexpr day operator-(const day& x, const days& y) noexcept; +constexpr days operator-(const day& x, const day& y) noexcept; +template + basic_ostream& + operator<<(basic_ostream& os, const day& d); + +// [time.cal.month] class month // C++20 +class month; +constexpr bool operator==(const month& x, const month& y) noexcept; +constexpr strong_ordering operator<=>(const month& x, const month& y) noexcept; + +constexpr month operator+(const month& x, const months& y) noexcept; +constexpr month operator+(const months& x, const month& y) noexcept; +constexpr month operator-(const month& x, const months& y) noexcept; +constexpr months operator-(const month& x, const month& y) noexcept; +template + basic_ostream& + operator<<(basic_ostream& os, const month& m); + +// [time.cal.year] class year // C++20 +class year; +constexpr bool operator==(const year& x, const year& y) noexcept; +constexpr strong_ordering operator<=>(const year& x, const year& y) noexcept; + +constexpr year operator+(const year& x, const years& y) noexcept; +constexpr year operator+(const years& x, const year& y) noexcept; +constexpr year operator-(const year& x, const years& y) noexcept; +constexpr years operator-(const year& x, const year& y) noexcept; +template + basic_ostream& + operator<<(basic_ostream& os, const year& y); + +// [time.cal.wd] class weekday // C++20 +class weekday; + +constexpr bool operator==(const weekday& x, const weekday& y) noexcept; +constexpr weekday operator+(const weekday& x, const days& y) noexcept; +constexpr weekday operator+(const days& x, const weekday& y) noexcept; +constexpr weekday operator-(const weekday& x, const days& y) noexcept; +constexpr days operator-(const weekday& x, const weekday& y) noexcept; +template + basic_ostream& + operator<<(basic_ostream& os, const weekday& wd); + +// [time.cal.wdidx] class weekday_indexed // C++20 + +class weekday_indexed; +constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const weekday_indexed& wdi); + +// [time.cal.wdlast] class weekday_last // C++20 +class weekday_last; + +constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const weekday_last& wdl); + +// [time.cal.md] class month_day // C++20 +class month_day; + +constexpr bool operator==(const month_day& x, const month_day& y) noexcept; +constexpr strong_ordering operator<=>(const month_day& x, const month_day& y) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const month_day& md); + +// [time.cal.mdlast] class month_day_last // C++20 +class month_day_last; + +constexpr bool operator==(const month_day_last& x, const month_day_last& y) noexcept; +constexpr strong_ordering operator<=>(const month_day_last& x, const month_day_last& y) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const month_day_last& mdl); + +// [time.cal.mwd] class month_weekday // C++20 +class month_weekday; + +constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const month_weekday& mwd); + +// [time.cal.mwdlast] class month_weekday_last // C++20 +class month_weekday_last; + +constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const month_weekday_last& mwdl); + + +// [time.cal.ym] class year_month // C++20 +class year_month; + +constexpr bool operator==(const year_month& x, const year_month& y) noexcept; +constexpr strong_ordering operator<=>(const year_month& x, const year_month& y) noexcept; + +constexpr year_month operator+(const year_month& ym, const months& dm) noexcept; +constexpr year_month operator+(const months& dm, const year_month& ym) noexcept; +constexpr year_month operator-(const year_month& ym, const months& dm) noexcept; +constexpr months operator-(const year_month& x, const year_month& y) noexcept; +constexpr year_month operator+(const year_month& ym, const years& dy) noexcept; +constexpr year_month operator+(const years& dy, const year_month& ym) noexcept; +constexpr year_month operator-(const year_month& ym, const years& dy) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const year_month& ym); + +// [time.cal.ymd] class year_month_day class // C++20 +year_month_day; + +constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept; +constexpr strong_ordering operator<=>(const year_month_day& x, const year_month_day& y) noexcept; + +constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept; +constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept; +constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept; +constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept; +constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept; +constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const year_month_day& ymd); + +// [time.cal.ymdlast] class year_month_day_last // C++20 +class year_month_day_last; + +constexpr bool operator==(const year_month_day_last& x, const year_month_day_last& y) noexcept; +constexpr strong_ordering operator<=>(const year_month_day_last_day& x, const year_month_day_last_day& y) noexcept; + +constexpr year_month_day_last + operator+(const year_month_day_last& ymdl, const months& dm) noexcept; +constexpr year_month_day_last + operator+(const months& dm, const year_month_day_last& ymdl) noexcept; +constexpr year_month_day_last + operator+(const year_month_day_last& ymdl, const years& dy) noexcept; +constexpr year_month_day_last + operator+(const years& dy, const year_month_day_last& ymdl) noexcept; +constexpr year_month_day_last + operator-(const year_month_day_last& ymdl, const months& dm) noexcept; +constexpr year_month_day_last + operator-(const year_month_day_last& ymdl, const years& dy) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const year_month_day_last& ymdl); + +// [time.cal.ymwd] class year_month_weekday // C++20 +class year_month_weekday; + +constexpr bool operator==(const year_month_weekday& x, + const year_month_weekday& y) noexcept; + +constexpr year_month_weekday + operator+(const year_month_weekday& ymwd, const months& dm) noexcept; +constexpr year_month_weekday + operator+(const months& dm, const year_month_weekday& ymwd) noexcept; +constexpr year_month_weekday + operator+(const year_month_weekday& ymwd, const years& dy) noexcept; +constexpr year_month_weekday + operator+(const years& dy, const year_month_weekday& ymwd) noexcept; +constexpr year_month_weekday + operator-(const year_month_weekday& ymwd, const months& dm) noexcept; +constexpr year_month_weekday + operator-(const year_month_weekday& ymwd, const years& dy) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const year_month_weekday& ymwd); + +// [time.cal.ymwdlast] class year_month_weekday_last // C++20 +class year_month_weekday_last; + +constexpr bool operator==(const year_month_weekday_last& x, + const year_month_weekday_last& y) noexcept; +constexpr year_month_weekday_last + operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept; +constexpr year_month_weekday_last + operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept; +constexpr year_month_weekday_last + operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept; +constexpr year_month_weekday_last + operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept; +constexpr year_month_weekday_last + operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept; +constexpr year_month_weekday_last + operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept; + +template + basic_ostream& + operator<<(basic_ostream& os, const year_month_weekday_last& ymwdl); + +// [time.cal.operators] civil calendar conventional syntax operators // C++20 +constexpr year_month + operator/(const year& y, const month& m) noexcept; +constexpr year_month + operator/(const year& y, int m) noexcept; +constexpr month_day + operator/(const month& m, const day& d) noexcept; +constexpr month_day + operator/(const month& m, int d) noexcept; +constexpr month_day + operator/(int m, const day& d) noexcept; +constexpr month_day + operator/(const day& d, const month& m) noexcept; +constexpr month_day + operator/(const day& d, int m) noexcept; +constexpr month_day_last + operator/(const month& m, last_spec) noexcept; +constexpr month_day_last + operator/(int m, last_spec) noexcept; +constexpr month_day_last + operator/(last_spec, const month& m) noexcept; +constexpr month_day_last + operator/(last_spec, int m) noexcept; +constexpr month_weekday + operator/(const month& m, const weekday_indexed& wdi) noexcept; +constexpr month_weekday + operator/(int m, const weekday_indexed& wdi) noexcept; +constexpr month_weekday + operator/(const weekday_indexed& wdi, const month& m) noexcept; +constexpr month_weekday + operator/(const weekday_indexed& wdi, int m) noexcept; +constexpr month_weekday_last + operator/(const month& m, const weekday_last& wdl) noexcept; +constexpr month_weekday_last + operator/(int m, const weekday_last& wdl) noexcept; +constexpr month_weekday_last + operator/(const weekday_last& wdl, const month& m) noexcept; +constexpr month_weekday_last + operator/(const weekday_last& wdl, int m) noexcept; +constexpr year_month_day + operator/(const year_month& ym, const day& d) noexcept; +constexpr year_month_day + operator/(const year_month& ym, int d) noexcept; +constexpr year_month_day + operator/(const year& y, const month_day& md) noexcept; +constexpr year_month_day + operator/(int y, const month_day& md) noexcept; +constexpr year_month_day + operator/(const month_day& md, const year& y) noexcept; +constexpr year_month_day + operator/(const month_day& md, int y) noexcept; +constexpr year_month_day_last + operator/(const year_month& ym, last_spec) noexcept; +constexpr year_month_day_last + operator/(const year& y, const month_day_last& mdl) noexcept; +constexpr year_month_day_last + operator/(int y, const month_day_last& mdl) noexcept; +constexpr year_month_day_last + operator/(const month_day_last& mdl, const year& y) noexcept; +constexpr year_month_day_last + operator/(const month_day_last& mdl, int y) noexcept; +constexpr year_month_weekday + operator/(const year_month& ym, const weekday_indexed& wdi) noexcept; +constexpr year_month_weekday + operator/(const year& y, const month_weekday& mwd) noexcept; +constexpr year_month_weekday + operator/(int y, const month_weekday& mwd) noexcept; +constexpr year_month_weekday + operator/(const month_weekday& mwd, const year& y) noexcept; +constexpr year_month_weekday + operator/(const month_weekday& mwd, int y) noexcept; +constexpr year_month_weekday_last + operator/(const year_month& ym, const weekday_last& wdl) noexcept; +constexpr year_month_weekday_last + operator/(const year& y, const month_weekday_last& mwdl) noexcept; +constexpr year_month_weekday_last + operator/(int y, const month_weekday_last& mwdl) noexcept; +constexpr year_month_weekday_last + operator/(const month_weekday_last& mwdl, const year& y) noexcept; +constexpr year_month_weekday_last + operator/(const month_weekday_last& mwdl, int y) noexcept; + +// 26.9, class template hh_mm_ss +template +class hh_mm_ss +{ + bool is_neg; // exposition only + chrono::hours h; // exposition only + chrono::minutes m; // exposition only + chrono::seconds s; // exposition only + precision ss; // exposition only + +public: + static unsigned constexpr fractional_width = see below; + using precision = see below; + + constexpr hh_mm_ss() noexcept : hh_mm_ss{Duration::zero()} {} + constexpr explicit hh_mm_ss(Duration d) noexcept; + + constexpr bool is_negative() const noexcept; + constexpr chrono::hours hours() const noexcept; + constexpr chrono::minutes minutes() const noexcept; + constexpr chrono::seconds seconds() const noexcept; + constexpr precision subseconds() const noexcept; + + constexpr explicit operator precision() const noexcept; + constexpr precision to_duration() const noexcept; +}; + +template + basic_ostream& + operator<<(basic_ostream& os, const hh_mm_ss& hms); // C++20 + +// 26.10, 12/24 hour functions +constexpr bool is_am(hours const& h) noexcept; +constexpr bool is_pm(hours const& h) noexcept; +constexpr hours make12(const hours& h) noexcept; +constexpr hours make24(const hours& h, bool is_pm) noexcept; + +// [time.zone.db], time zone database +struct tzdb { // C++20 + string version; + vector zones; + vector links; + vector leap_seconds; + + const time_zone* locate_zone(string_view tz_name) const; + const time_zone* current_zone() const; +}; + +class tzdb_list { // C++20 +public: + tzdb_list(const tzdb_list&) = delete; + tzdb_list& operator=(const tzdb_list&) = delete; + + // unspecified additional constructors + + class const_iterator; + + const tzdb& front() const noexcept; + + const_iterator erase_after(const_iterator p); + + const_iterator begin() const noexcept; + const_iterator end() const noexcept; + + const_iterator cbegin() const noexcept; + const_iterator cend() const noexcept; +}; + +// [time.zone.db.access], time zone database access +const tzdb& get_tzdb(); // C++20 +tzdb_list& get_tzdb_list(); // C++20 +const time_zone* locate_zone(string_view tz_name); // C++20 +const time_zone* current_zone() // C++20 + +// [time.zone.db.remote], remote time zone database support +const tzdb& reload_tzdb(); // C++20 +string remote_version(); // C++20 + +// [time.zone.exception], exception classes +class nonexistent_local_time; // C++20 +class ambiguous_local_time; // C++20 + +// [time.zone.info], information classes +struct sys_info { // C++20 + sys_seconds begin; + sys_seconds end; + seconds offset; + minutes save; + string abbrev; +}; + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const sys_info& si); + +struct local_info { // C++20 + static constexpr int unique = 0; + static constexpr int nonexistent = 1; + static constexpr int ambiguous = 2; + + int result; + sys_info first; + sys_info second; +}; + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, const local_info& li); + +// [time.zone.timezone] class time_zone // C++20 +enum class choose {earliest, latest}; +class time_zone { + time_zone(time_zone&&) = default; + time_zone& operator=(time_zone&&) = default; + + // unspecified additional constructors + + string_view name() const noexcept; + + template + sys_info get_info(const sys_time& st) const; + + template + local_info get_info(const local_time& tp) const; + + template + sys_time> + to_sys(const local_time& tp) const; + + template + sys_time> + to_sys(const local_time& tp, choose z) const; + + template + local_time> + to_local(const sys_time& tp) const; +}; +bool operator==(const time_zone& x, const time_zone& y) noexcept; // C++20 +strong_ordering operator<=>(const time_zone& x, const time_zone& y) noexcept; // C++20 + +// [time.zone.zonedtraits], class template zoned_traits +template struct zoned_traits; // C++20 + +// [time.zone.zonedtime], class template zoned_time +template // C++20 +class zoned_time; + +using zoned_seconds = zoned_time; // C++20 + +template // C++20 + bool operator==(const zoned_time& x, + const zoned_time& y); + +template // C++20 + basic_ostream& + operator<<(basic_ostream& os, + const zoned_time& t); + +// [time.zone.leap], leap second support +class leap_second { // C++20 +public: + leap_second(const leap_second&) = default; + leap_second& operator=(const leap_second&) = default; + + // unspecified additional constructors + + constexpr sys_seconds date() const noexcept; + constexpr seconds value() const noexcept; +}; + +constexpr bool operator==(const leap_second& x, const leap_second& y); // C++20 +constexpr strong_ordering operator<=>(const leap_second& x, const leap_second& y); + +template // C++20 + constexpr bool operator==(const leap_second& x, const sys_time& y); +template // C++20 + constexpr bool operator< (const leap_second& x, const sys_time& y); +template // C++20 + constexpr bool operator< (const sys_time& x, const leap_second& y); +template // C++20 + constexpr bool operator> (const leap_second& x, const sys_time& y); +template // C++20 + constexpr bool operator> (const sys_time& x, const leap_second& y); +template // C++20 + constexpr bool operator<=(const leap_second& x, const sys_time& y); +template // C++20 + constexpr bool operator<=(const sys_time& x, const leap_second& y); +template // C++20 + constexpr bool operator>=(const leap_second& x, const sys_time& y); +template // C++20 + constexpr bool operator>=(const sys_time& x, const leap_second& y); +template // C++20 + requires three_way_comparable_with> + constexpr auto operator<=>(const leap_second& x, const sys_time& y); + +// [time.zone.link], class time_zone_link +class time_zone_link { // C++20 +public: + time_zone_link(time_zone_link&&) = default; + time_zone_link& operator=(time_zone_link&&) = default; + + // unspecified additional constructors + + string_view name() const noexcept; + string_view target() const noexcept; +}; + +bool operator==(const time_zone_link& x, const time_zone_link& y); // C++20 +strong_ordering operator<=>(const time_zone_link& x, const time_zone_link& y); // C++20 + +} // chrono + +namespace std { + template + struct formatter, charT>; // C++20 + template + struct formatter, charT>; // C++20 + template + struct formatter, charT>; // C++20 + template + struct formatter, charT>; // C++20 + template + struct formatter, charT>; // C++20 + template + struct formatter, charT>; // C++20 + template + struct formatter, charT>; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template + struct formatter>, charT>; // C++20 + template struct formatter; // C++20 + template struct formatter; // C++20 + template // C++20 + struct formatter, charT>; +} // namespace std + +namespace chrono { +// calendrical constants +inline constexpr last_spec last{}; // C++20 +inline constexpr chrono::weekday Sunday{0}; // C++20 +inline constexpr chrono::weekday Monday{1}; // C++20 +inline constexpr chrono::weekday Tuesday{2}; // C++20 +inline constexpr chrono::weekday Wednesday{3}; // C++20 +inline constexpr chrono::weekday Thursday{4}; // C++20 +inline constexpr chrono::weekday Friday{5}; // C++20 +inline constexpr chrono::weekday Saturday{6}; // C++20 + +inline constexpr chrono::month January{1}; // C++20 +inline constexpr chrono::month February{2}; // C++20 +inline constexpr chrono::month March{3}; // C++20 +inline constexpr chrono::month April{4}; // C++20 +inline constexpr chrono::month May{5}; // C++20 +inline constexpr chrono::month June{6}; // C++20 +inline constexpr chrono::month July{7}; // C++20 +inline constexpr chrono::month August{8}; // C++20 +inline constexpr chrono::month September{9}; // C++20 +inline constexpr chrono::month October{10}; // C++20 +inline constexpr chrono::month November{11}; // C++20 +inline constexpr chrono::month December{12}; // C++20 +} // chrono + +inline namespace literals { + inline namespace chrono_literals { +constexpr chrono::hours operator ""h(unsigned long long); // C++14 +constexpr chrono::duration> operator ""h(long double); // C++14 +constexpr chrono::minutes operator ""min(unsigned long long); // C++14 +constexpr chrono::duration> operator ""min(long double); // C++14 +constexpr chrono::seconds operator ""s(unsigned long long); // C++14 +constexpr chrono::duration operator ""s(long double); // C++14 +constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14 +constexpr chrono::duration operator ""ms(long double); // C++14 +constexpr chrono::microseconds operator ""us(unsigned long long); // C++14 +constexpr chrono::duration operator ""us(long double); // C++14 +constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14 +constexpr chrono::duration operator ""ns(long double); // C++14 +constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20 +constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20 +} // chrono_literals +} // literals + +namespace std { + template + struct hash; // C++26 + template + struct hash>; // C++26 + template + struct hash>; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template<> + struct hash; // C++26 + template + struct hash>; // C++26 + template<> + struct hash; // C++26 +} // namespace std + +} // std +*/ + +// clang-format on + +#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) +# include <__cxx03/chrono> +#else +# include <__config> + +# include <__chrono/duration.h> +# include <__chrono/file_clock.h> +# include <__chrono/high_resolution_clock.h> +# include <__chrono/steady_clock.h> +# include <__chrono/system_clock.h> +# include <__chrono/time_point.h> + +# if _LIBCPP_STD_VER >= 20 +# include <__chrono/calendar.h> +# include <__chrono/day.h> +# include <__chrono/exception.h> +# include <__chrono/hh_mm_ss.h> +# include <__chrono/is_clock.h> +# include <__chrono/literals.h> +# include <__chrono/local_info.h> +# include <__chrono/month.h> +# include <__chrono/month_weekday.h> +# include <__chrono/monthday.h> +# include <__chrono/sys_info.h> +# include <__chrono/weekday.h> +# include <__chrono/year.h> +# include <__chrono/year_month.h> +# include <__chrono/year_month_day.h> +# include <__chrono/year_month_weekday.h> + +# if _LIBCPP_HAS_LOCALIZATION +# include <__chrono/formatter.h> +# include <__chrono/ostream.h> +# include <__chrono/parser_std_format_spec.h> +# include <__chrono/statically_widen.h> +# endif + +# if _LIBCPP_HAS_TIME_ZONE_DATABASE && _LIBCPP_HAS_FILESYSTEM && _LIBCPP_HAS_LOCALIZATION +# include <__chrono/gps_clock.h> +# include <__chrono/leap_second.h> +# include <__chrono/tai_clock.h> +# include <__chrono/time_zone.h> +# include <__chrono/time_zone_link.h> +# include <__chrono/tzdb.h> +# include <__chrono/tzdb_list.h> +# include <__chrono/utc_clock.h> +# include <__chrono/zoned_time.h> +# endif + +# endif + +# include + +// standard-mandated includes + +// [time.syn] +# include + +# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +# endif + +# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 17 +# include +# include +# include +# endif + +# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 +# include +# include +# include +# include +# include +# include +# include +# endif + +# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER == 20 +# include +# if _LIBCPP_HAS_LOCALIZATION +# include +# include +# endif +# endif +#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) + +#endif // _LIBCPP_CHRONO -- cgit v1.2.3