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date/date.h
Howard Hinnant 9b79ad2ce2 Add tests for time_of_day and make_time
2015-08-15 14:21:43 -04:00

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#ifndef DATE_H
#define DATE_H
// The MIT License (MIT)
//
// Copyright (c) 2015 Howard Hinnant
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#include <chrono>
#include <climits>
#if !(__cplusplus >= 201402)
# include <cmath>
#endif
#include <limits>
#include <ostream>
#include <ratio>
#include <stdexcept>
namespace date
{
//---------------+
// Configuration |
//---------------+
// MSVC's constexpr support is still a WIP, even in VS2015.
// Fall back to a lesser mode to support it.
// TODO: Remove this or retest later once MSVC's constexpr improves.
#if defined(_MSC_VER) && ! defined(__clang__) && ! defined( __GNUG__)
# define CONSTDATA const
# define CONSTCD11
# define CONSTCD14
#elif __cplusplus >= 201402
# define CONSTDATA constexpr
# define CONSTCD11 constexpr
# define CONSTCD14 constexpr
#else
# define CONSTDATA constexpr
# define CONSTCD11 constexpr
# define CONSTCD14
#endif
//-----------+
// Interface |
//-----------+
// durations
using days = std::chrono::duration
<int, std::ratio_multiply<std::ratio<24>, std::chrono::hours::period>>;
using weeks = std::chrono::duration
<int, std::ratio_multiply<std::ratio<7>, days::period>>;
using years = std::chrono::duration
<int, std::ratio_multiply<std::ratio<146097, 400>, days::period>>;
using months = std::chrono::duration
<int, std::ratio_divide<years::period, std::ratio<12>>>;
// time_point
using day_point = std::chrono::time_point<std::chrono::system_clock, days>;
// types
CONSTDATA struct last_spec {} last{};
class day;
class month;
class year;
class weekday;
class weekday_indexed;
class weekday_last;
class month_day;
class month_day_last;
class month_weekday;
class month_weekday_last;
class year_month;
class year_month_day;
class year_month_day_last;
class year_month_weekday;
class year_month_weekday_last;
// date composition operators
CONSTCD11 year_month operator/(const year& y, const month& m) noexcept;
CONSTCD11 year_month operator/(const year& y, int m) noexcept;
CONSTCD11 month_day operator/(const day& d, const month& m) noexcept;
CONSTCD11 month_day operator/(const day& d, int m) noexcept;
CONSTCD11 month_day operator/(const month& m, const day& d) noexcept;
CONSTCD11 month_day operator/(const month& m, int d) noexcept;
CONSTCD11 month_day operator/(int m, const day& d) noexcept;
CONSTCD11 month_day_last operator/(const month& m, last_spec) noexcept;
CONSTCD11 month_day_last operator/(int m, last_spec) noexcept;
CONSTCD11 month_day_last operator/(last_spec, const month& m) noexcept;
CONSTCD11 month_day_last operator/(last_spec, int m) noexcept;
CONSTCD11 month_weekday operator/(const month& m, const weekday_indexed& wdi) noexcept;
CONSTCD11 month_weekday operator/(int m, const weekday_indexed& wdi) noexcept;
CONSTCD11 month_weekday operator/(const weekday_indexed& wdi, const month& m) noexcept;
CONSTCD11 month_weekday operator/(const weekday_indexed& wdi, int m) noexcept;
CONSTCD11 month_weekday_last operator/(const month& m, const weekday_last& wdl) noexcept;
CONSTCD11 month_weekday_last operator/(int m, const weekday_last& wdl) noexcept;
CONSTCD11 month_weekday_last operator/(const weekday_last& wdl, const month& m) noexcept;
CONSTCD11 month_weekday_last operator/(const weekday_last& wdl, int m) noexcept;
CONSTCD11 year_month_day operator/(const year_month& ym, const day& d) noexcept;
CONSTCD11 year_month_day operator/(const year_month& ym, int d) noexcept;
CONSTCD11 year_month_day operator/(const year& y, const month_day& md) noexcept;
CONSTCD11 year_month_day operator/(int y, const month_day& md) noexcept;
CONSTCD11 year_month_day operator/(const month_day& md, const year& y) noexcept;
CONSTCD11 year_month_day operator/(const month_day& md, int y) noexcept;
CONSTCD11
year_month_day_last operator/(const year_month& ym, last_spec) noexcept;
CONSTCD11
year_month_day_last operator/(const year& y, const month_day_last& mdl) noexcept;
CONSTCD11
year_month_day_last operator/(int y, const month_day_last& mdl) noexcept;
CONSTCD11
year_month_day_last operator/(const month_day_last& mdl, const year& y) noexcept;
CONSTCD11
year_month_day_last operator/(const month_day_last& mdl, int y) noexcept;
CONSTCD11
year_month_weekday
operator/(const year_month& ym, const weekday_indexed& wdi) noexcept;
CONSTCD11
year_month_weekday
operator/(const year& y, const month_weekday& mwd) noexcept;
CONSTCD11
year_month_weekday
operator/(int y, const month_weekday& mwd) noexcept;
CONSTCD11
year_month_weekday
operator/(const month_weekday& mwd, const year& y) noexcept;
CONSTCD11
year_month_weekday
operator/(const month_weekday& mwd, int y) noexcept;
CONSTCD11
year_month_weekday_last
operator/(const year_month& ym, const weekday_last& wdl) noexcept;
CONSTCD11
year_month_weekday_last
operator/(const year& y, const month_weekday_last& mwdl) noexcept;
CONSTCD11
year_month_weekday_last
operator/(int y, const month_weekday_last& mwdl) noexcept;
CONSTCD11
year_month_weekday_last
operator/(const month_weekday_last& mwdl, const year& y) noexcept;
CONSTCD11
year_month_weekday_last
operator/(const month_weekday_last& mwdl, int y) noexcept;
// Detailed interface
// day
class day
{
unsigned char d_;
public:
explicit CONSTCD11 day(unsigned d) noexcept;
day& operator++() noexcept;
day operator++(int) noexcept;
day& operator--() noexcept;
day operator--(int) noexcept;
day& operator+=(const days& d) noexcept;
day& operator-=(const days& d) noexcept;
CONSTCD11 explicit operator unsigned() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const day& x, const day& y) noexcept;
CONSTCD11 bool operator!=(const day& x, const day& y) noexcept;
CONSTCD11 bool operator< (const day& x, const day& y) noexcept;
CONSTCD11 bool operator> (const day& x, const day& y) noexcept;
CONSTCD11 bool operator<=(const day& x, const day& y) noexcept;
CONSTCD11 bool operator>=(const day& x, const day& y) noexcept;
CONSTCD11 day operator+(const day& x, const days& y) noexcept;
CONSTCD11 day operator+(const days& x, const day& y) noexcept;
CONSTCD11 day operator-(const day& x, const days& y) noexcept;
CONSTCD11 days operator-(const day& x, const day& y) noexcept;
CONSTCD11 day operator "" _d(unsigned long long d) noexcept;
std::ostream& operator<<(std::ostream& os, const day& d);
// month
class month
{
unsigned char m_;
public:
explicit CONSTCD11 month(unsigned m) noexcept;
month& operator++() noexcept;
month operator++(int) noexcept;
month& operator--() noexcept;
month operator--(int) noexcept;
month& operator+=(const months& m) noexcept;
month& operator-=(const months& m) noexcept;
CONSTCD11 explicit operator unsigned() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const month& x, const month& y) noexcept;
CONSTCD11 bool operator!=(const month& x, const month& y) noexcept;
CONSTCD11 bool operator< (const month& x, const month& y) noexcept;
CONSTCD11 bool operator> (const month& x, const month& y) noexcept;
CONSTCD11 bool operator<=(const month& x, const month& y) noexcept;
CONSTCD11 bool operator>=(const month& x, const month& y) noexcept;
CONSTCD14 month operator+(const month& x, const months& y) noexcept;
CONSTCD14 month operator+(const months& x, const month& y) noexcept;
CONSTCD14 month operator-(const month& x, const months& y) noexcept;
CONSTCD14 months operator-(const month& x, const month& y) noexcept;
std::ostream& operator<<(std::ostream& os, const month& m);
// constexpr month jan{1};
// constexpr month feb{2};
// constexpr month mar{3};
// constexpr month apr{4};
// constexpr month may{5};
// constexpr month jun{6};
// constexpr month jul{7};
// constexpr month aug{8};
// constexpr month sep{9};
// constexpr month oct{10};
// constexpr month nov{11};
// constexpr month dec{12};
// year
class year
{
short y_;
public:
explicit CONSTCD11 year(int y) noexcept;
year& operator++() noexcept;
year operator++(int) noexcept;
year& operator--() noexcept;
year operator--(int) noexcept;
year& operator+=(const years& y) noexcept;
year& operator-=(const years& y) noexcept;
CONSTCD11 bool is_leap() const noexcept;
CONSTCD11 explicit operator int() const noexcept;
CONSTCD11 bool ok() const noexcept;
static CONSTCD11 year min() noexcept;
static CONSTCD11 year max() noexcept;
};
CONSTCD11 bool operator==(const year& x, const year& y) noexcept;
CONSTCD11 bool operator!=(const year& x, const year& y) noexcept;
CONSTCD11 bool operator< (const year& x, const year& y) noexcept;
CONSTCD11 bool operator> (const year& x, const year& y) noexcept;
CONSTCD11 bool operator<=(const year& x, const year& y) noexcept;
CONSTCD11 bool operator>=(const year& x, const year& y) noexcept;
CONSTCD11 year operator+(const year& x, const years& y) noexcept;
CONSTCD11 year operator+(const years& x, const year& y) noexcept;
CONSTCD11 year operator-(const year& x, const years& y) noexcept;
CONSTCD11 years operator-(const year& x, const year& y) noexcept;
CONSTCD11 year operator "" _y(unsigned long long y) noexcept;
std::ostream& operator<<(std::ostream& os, const year& y);
// weekday
class weekday
{
unsigned char wd_;
public:
explicit CONSTCD11 weekday(unsigned wd) noexcept;
CONSTCD11 weekday(const day_point& dp) noexcept;
weekday& operator++() noexcept;
weekday operator++(int) noexcept;
weekday& operator--() noexcept;
weekday operator--(int) noexcept;
weekday& operator+=(const days& d) noexcept;
weekday& operator-=(const days& d) noexcept;
CONSTCD11 explicit operator unsigned() const noexcept;
CONSTCD11 bool ok() const noexcept;
CONSTCD11 weekday_indexed operator[](unsigned index) const noexcept;
CONSTCD11 weekday_last operator[](last_spec) const noexcept;
private:
static CONSTCD11 unsigned char weekday_from_days(int z) noexcept;
};
CONSTCD11 bool operator==(const weekday& x, const weekday& y) noexcept;
CONSTCD11 bool operator!=(const weekday& x, const weekday& y) noexcept;
CONSTCD14 weekday operator+(const weekday& x, const days& y) noexcept;
CONSTCD14 weekday operator+(const days& x, const weekday& y) noexcept;
CONSTCD14 weekday operator-(const weekday& x, const days& y) noexcept;
CONSTCD14 days operator-(const weekday& x, const weekday& y) noexcept;
std::ostream& operator<<(std::ostream& os, const weekday& wd);
// constexpr weekday sun{0};
// constexpr weekday mon{1};
// constexpr weekday tue{2};
// constexpr weekday wed{3};
// constexpr weekday thu{4};
// constexpr weekday fri{5};
// constexpr weekday sat{6};
// weekday_indexed
class weekday_indexed
{
unsigned char wd_ : 4;
unsigned char index_ : 4;
public:
CONSTCD11 weekday_indexed(const date::weekday& wd, unsigned index) noexcept;
CONSTCD11 date::weekday weekday() const noexcept;
CONSTCD11 unsigned index() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept;
CONSTCD11 bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept;
std::ostream& operator<<(std::ostream& os, const weekday_indexed& wdi);
// weekday_last
class weekday_last
{
date::weekday wd_;
public:
explicit CONSTCD11 weekday_last(const date::weekday& wd) noexcept;
CONSTCD11 date::weekday weekday() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const weekday_last& x, const weekday_last& y) noexcept;
CONSTCD11 bool operator!=(const weekday_last& x, const weekday_last& y) noexcept;
std::ostream& operator<<(std::ostream& os, const weekday_last& wdl);
// year_month
class year_month
{
date::year y_;
date::month m_;
public:
CONSTCD11 year_month(const date::year& y, const date::month& m) noexcept;
CONSTCD11 date::year year() const noexcept;
CONSTCD11 date::month month() const noexcept;
year_month& operator+=(const months& dm) noexcept;
year_month& operator-=(const months& dm) noexcept;
year_month& operator+=(const years& dy) noexcept;
year_month& operator-=(const years& dy) noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const year_month& x, const year_month& y) noexcept;
CONSTCD11 bool operator!=(const year_month& x, const year_month& y) noexcept;
CONSTCD11 bool operator< (const year_month& x, const year_month& y) noexcept;
CONSTCD11 bool operator> (const year_month& x, const year_month& y) noexcept;
CONSTCD11 bool operator<=(const year_month& x, const year_month& y) noexcept;
CONSTCD11 bool operator>=(const year_month& x, const year_month& y) noexcept;
CONSTCD14 year_month operator+(const year_month& ym, const months& dm) noexcept;
CONSTCD14 year_month operator+(const months& dm, const year_month& ym) noexcept;
CONSTCD14 year_month operator-(const year_month& ym, const months& dm) noexcept;
CONSTCD11 months operator-(const year_month& x, const year_month& y) noexcept;
CONSTCD11 year_month operator+(const year_month& ym, const years& dy) noexcept;
CONSTCD11 year_month operator+(const years& dy, const year_month& ym) noexcept;
CONSTCD11 year_month operator-(const year_month& ym, const years& dy) noexcept;
std::ostream& operator<<(std::ostream& os, const year_month& ym);
// month_day
class month_day
{
date::month m_;
date::day d_;
public:
CONSTCD11 month_day(const date::month& m, const date::day& d) noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 date::day day() const noexcept;
CONSTCD14 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const month_day& x, const month_day& y) noexcept;
CONSTCD11 bool operator!=(const month_day& x, const month_day& y) noexcept;
CONSTCD11 bool operator< (const month_day& x, const month_day& y) noexcept;
CONSTCD11 bool operator> (const month_day& x, const month_day& y) noexcept;
CONSTCD11 bool operator<=(const month_day& x, const month_day& y) noexcept;
CONSTCD11 bool operator>=(const month_day& x, const month_day& y) noexcept;
std::ostream& operator<<(std::ostream& os, const month_day& md);
// month_day_last
class month_day_last
{
date::month m_;
public:
CONSTCD11 explicit month_day_last(const date::month& m) noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const month_day_last& x, const month_day_last& y) noexcept;
CONSTCD11 bool operator!=(const month_day_last& x, const month_day_last& y) noexcept;
CONSTCD11 bool operator< (const month_day_last& x, const month_day_last& y) noexcept;
CONSTCD11 bool operator> (const month_day_last& x, const month_day_last& y) noexcept;
CONSTCD11 bool operator<=(const month_day_last& x, const month_day_last& y) noexcept;
CONSTCD11 bool operator>=(const month_day_last& x, const month_day_last& y) noexcept;
std::ostream& operator<<(std::ostream& os, const month_day_last& mdl);
// month_weekday
class month_weekday
{
date::month m_;
date::weekday_indexed wdi_;
public:
CONSTCD11 month_weekday(const date::month& m,
const date::weekday_indexed& wdi) noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 date::weekday_indexed weekday_indexed() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11 bool operator==(const month_weekday& x, const month_weekday& y) noexcept;
CONSTCD11 bool operator!=(const month_weekday& x, const month_weekday& y) noexcept;
std::ostream& operator<<(std::ostream& os, const month_weekday& mwd);
// month_weekday_last
class month_weekday_last
{
date::month m_;
date::weekday_last wdl_;
public:
CONSTCD11 month_weekday_last(const date::month& m,
const date::weekday_last& wd) noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 date::weekday_last weekday_last() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11
bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
CONSTCD11
bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept;
std::ostream& operator<<(std::ostream& os, const month_weekday_last& mwdl);
// class year_month_day
class year_month_day
{
date::year y_;
date::month m_;
date::day d_;
public:
CONSTCD11 year_month_day(const date::year& y, const date::month& m,
const date::day& d) noexcept;
CONSTCD14 year_month_day(const year_month_day_last& ymdl) noexcept;
CONSTCD14 year_month_day(const day_point& dp) noexcept;
year_month_day& operator+=(const months& m) noexcept;
year_month_day& operator-=(const months& m) noexcept;
year_month_day& operator+=(const years& y) noexcept;
year_month_day& operator-=(const years& y) noexcept;
CONSTCD11 date::year year() const noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 date::day day() const noexcept;
CONSTCD14 operator day_point() const noexcept;
CONSTCD14 bool ok() const noexcept;
private:
static CONSTCD14 year_month_day from_day_point(const day_point& dp) noexcept;
};
CONSTCD11 bool operator==(const year_month_day& x, const year_month_day& y) noexcept;
CONSTCD11 bool operator!=(const year_month_day& x, const year_month_day& y) noexcept;
CONSTCD11 bool operator< (const year_month_day& x, const year_month_day& y) noexcept;
CONSTCD11 bool operator> (const year_month_day& x, const year_month_day& y) noexcept;
CONSTCD11 bool operator<=(const year_month_day& x, const year_month_day& y) noexcept;
CONSTCD11 bool operator>=(const year_month_day& x, const year_month_day& y) noexcept;
CONSTCD14 year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept;
CONSTCD14 year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept;
CONSTCD14 year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept;
CONSTCD11 year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept;
CONSTCD11 year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept;
CONSTCD11 year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept;
std::ostream& operator<<(std::ostream& os, const year_month_day& ymd);
// year_month_day_last
class year_month_day_last
{
date::year y_;
date::month_day_last mdl_;
public:
CONSTCD11 year_month_day_last(const date::year& y,
const date::month_day_last& mdl) noexcept;
year_month_day_last& operator+=(const months& m) noexcept;
year_month_day_last& operator-=(const months& m) noexcept;
year_month_day_last& operator+=(const years& y) noexcept;
year_month_day_last& operator-=(const years& y) noexcept;
CONSTCD11 date::year year() const noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 date::month_day_last month_day_last() const noexcept;
CONSTCD14 date::day day() const noexcept;
CONSTCD14 operator day_point() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11
bool operator==(const year_month_day_last& x, const year_month_day_last& y) noexcept;
CONSTCD11
bool operator!=(const year_month_day_last& x, const year_month_day_last& y) noexcept;
CONSTCD11
bool operator< (const year_month_day_last& x, const year_month_day_last& y) noexcept;
CONSTCD11
bool operator> (const year_month_day_last& x, const year_month_day_last& y) noexcept;
CONSTCD11
bool operator<=(const year_month_day_last& x, const year_month_day_last& y) noexcept;
CONSTCD11
bool operator>=(const year_month_day_last& x, const year_month_day_last& y) noexcept;
CONSTCD14
year_month_day_last
operator+(const year_month_day_last& ymdl, const months& dm) noexcept;
CONSTCD14
year_month_day_last
operator+(const months& dm, const year_month_day_last& ymdl) noexcept;
CONSTCD11
year_month_day_last
operator+(const year_month_day_last& ymdl, const years& dy) noexcept;
CONSTCD11
year_month_day_last
operator+(const years& dy, const year_month_day_last& ymdl) noexcept;
CONSTCD14
year_month_day_last
operator-(const year_month_day_last& ymdl, const months& dm) noexcept;
CONSTCD11
year_month_day_last
operator-(const year_month_day_last& ymdl, const years& dy) noexcept;
std::ostream& operator<<(std::ostream& os, const year_month_day_last& ymdl);
// year_month_weekday
class year_month_weekday
{
date::year y_;
date::month m_;
date::weekday_indexed wdi_;
public:
CONSTCD11 year_month_weekday(const date::year& y, const date::month& m,
const date::weekday_indexed& wdi) noexcept;
CONSTCD14 year_month_weekday(const day_point& dp) noexcept;
year_month_weekday& operator+=(const months& m) noexcept;
year_month_weekday& operator-=(const months& m) noexcept;
year_month_weekday& operator+=(const years& y) noexcept;
year_month_weekday& operator-=(const years& y) noexcept;
CONSTCD11 date::year year() const noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 date::weekday_indexed weekday_indexed() const noexcept;
CONSTCD14 operator day_point() const noexcept;
CONSTCD14 bool ok() const noexcept;
private:
static CONSTCD14 year_month_weekday from_day_point(const day_point& dp) noexcept;
};
CONSTCD11
bool operator==(const year_month_weekday& x, const year_month_weekday& y) noexcept;
CONSTCD11
bool operator!=(const year_month_weekday& x, const year_month_weekday& y) noexcept;
CONSTCD14
year_month_weekday
operator+(const year_month_weekday& ymwd, const months& dm) noexcept;
CONSTCD14
year_month_weekday
operator+(const months& dm, const year_month_weekday& ymwd) noexcept;
CONSTCD11
year_month_weekday
operator+(const year_month_weekday& ymwd, const years& dy) noexcept;
CONSTCD11
year_month_weekday
operator+(const years& dy, const year_month_weekday& ymwd) noexcept;
CONSTCD14
year_month_weekday
operator-(const year_month_weekday& ymwd, const months& dm) noexcept;
CONSTCD11
year_month_weekday
operator-(const year_month_weekday& ymwd, const years& dy) noexcept;
std::ostream& operator<<(std::ostream& os, const year_month_weekday& ymwdi);
// year_month_weekday_last
class year_month_weekday_last
{
date::year y_;
date::month m_;
date::weekday_last wdl_;
public:
CONSTCD11 year_month_weekday_last(const date::year& y, const date::month& m,
const date::weekday_last& wdl) noexcept;
year_month_weekday_last& operator+=(const months& m) noexcept;
year_month_weekday_last& operator-=(const months& m) noexcept;
year_month_weekday_last& operator+=(const years& y) noexcept;
year_month_weekday_last& operator-=(const years& y) noexcept;
CONSTCD11 date::year year() const noexcept;
CONSTCD11 date::month month() const noexcept;
CONSTCD11 date::weekday_last weekday_last() const noexcept;
CONSTCD14 operator day_point() const noexcept;
CONSTCD11 bool ok() const noexcept;
};
CONSTCD11
bool
operator==(const year_month_weekday_last& x, const year_month_weekday_last& y) noexcept;
CONSTCD11
bool
operator!=(const year_month_weekday_last& x, const year_month_weekday_last& y) noexcept;
CONSTCD14
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
CONSTCD14
year_month_weekday_last
operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept;
CONSTCD11
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
CONSTCD11
year_month_weekday_last
operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept;
CONSTCD14
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
CONSTCD11
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
std::ostream& operator<<(std::ostream& os, const year_month_weekday_last& ymwdl);
//----------------+
// Implementation |
//----------------+
// utilities
class save_stream
{
std::ostream& os_;
char fill_;
std::ios::fmtflags flags_;
public:
~save_stream()
{
os_.fill(fill_);
os_.flags(flags_);
}
save_stream(const save_stream&) = delete;
save_stream& operator=(const save_stream&) = delete;
explicit save_stream(std::ostream& os)
: os_(os)
, fill_(os.fill())
, flags_(os.flags())
{}
};
// truncate towards zero
template <class To, class Rep, class Period>
CONSTCD11
inline
To
truncate(const std::chrono::duration<Rep, Period>& d)
{
return std::chrono::duration_cast<To>(d);
}
// round down
template <class To, class Rep, class Period>
CONSTCD14
inline
To
floor(const std::chrono::duration<Rep, Period>& d)
{
To t = std::chrono::duration_cast<To>(d);
if (t > d)
t = t - To{1};
return t;
}
// round to nearest, to even on tie
template <class To, class Rep, class Period>
CONSTCD14
inline
To
round(const std::chrono::duration<Rep, Period>& d)
{
To t0 = std::chrono::duration_cast<To>(d);
To t1 = t0 + To{1};
auto diff0 = d - t0;
auto diff1 = t1 - d;
if (diff0 == diff1)
{
if (t0.count() & 1)
return t1;
return t0;
}
else if (diff0 < diff1)
return t0;
return t1;
}
// round up
template <class To, class Rep, class Period>
CONSTCD14
inline
To
ceil(const std::chrono::duration<Rep, Period>& d)
{
To t = std::chrono::duration_cast<To>(d);
if (t < d)
t = t + To{1};
return t;
}
// truncate towards zero
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
truncate(const std::chrono::time_point<Clock, FromDuration>& tp)
{
return std::chrono::time_point_cast<To>(tp);
}
// round down
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
floor(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{floor<To>(tp.time_since_epoch())};
}
// round to nearest, to even on tie
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
round(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{round<To>(tp.time_since_epoch())};
}
// round up
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
ceil(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{ceil<To>(tp.time_since_epoch())};
}
// day
CONSTCD11 inline day::day(unsigned d) noexcept : d_(static_cast<unsigned char>(d)) {}
inline day& day::operator++() noexcept {++d_; return *this;}
inline day day::operator++(int) noexcept {auto tmp(*this); ++(*this); return tmp;}
inline day& day::operator--() noexcept {--d_; return *this;}
inline day day::operator--(int) noexcept {auto tmp(*this); --(*this); return tmp;}
inline day& day::operator+=(const days& d) noexcept {*this = *this + d; return *this;}
inline day& day::operator-=(const days& d) noexcept {*this = *this - d; return *this;}
CONSTCD11 inline day::operator unsigned() const noexcept {return d_;}
CONSTCD11 inline bool day::ok() const noexcept {return 1 <= d_ && d_ <= 31;}
CONSTCD11
inline
bool
operator==(const day& x, const day& y) noexcept
{
return static_cast<unsigned>(x) == static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator!=(const day& x, const day& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const day& x, const day& y) noexcept
{
return static_cast<unsigned>(x) < static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator>(const day& x, const day& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const day& x, const day& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const day& x, const day& y) noexcept
{
return !(x < y);
}
CONSTCD11
inline
days
operator-(const day& x, const day& y) noexcept
{
return days{static_cast<days::rep>(static_cast<unsigned>(x)
- static_cast<unsigned>(y))};
}
CONSTCD11
inline
day
operator+(const day& x, const days& y) noexcept
{
return day{static_cast<unsigned>(x) + static_cast<unsigned>(y.count())};
}
CONSTCD11
inline
day
operator+(const days& x, const day& y) noexcept
{
return y + x;
}
CONSTCD11
inline
day
operator-(const day& x, const days& y) noexcept
{
return x + -y;
}
inline
std::ostream&
operator<<(std::ostream& os, const day& d)
{
save_stream _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(2);
os << static_cast<unsigned>(d);
return os;
}
CONSTCD11
inline
day
operator "" _d(unsigned long long d) noexcept
{
return day{static_cast<unsigned>(d)};
}
// month
CONSTCD11 inline month::month(unsigned m) noexcept : m_(static_cast<decltype(m_)>(m)) {}
inline month& month::operator++() noexcept {if (++m_ == 13) m_ = 1; return *this;}
inline month month::operator++(int) noexcept {auto tmp(*this); ++(*this); return tmp;}
inline month& month::operator--() noexcept {if (--m_ == 0) m_ = 12; return *this;}
inline month month::operator--(int) noexcept {auto tmp(*this); --(*this); return tmp;}
inline
month&
month::operator+=(const months& m) noexcept
{
*this = *this + m;
return *this;
}
inline
month&
month::operator-=(const months& m) noexcept
{
*this = *this - m;
return *this;
}
CONSTCD11 inline month::operator unsigned() const noexcept {return m_;}
CONSTCD11 inline bool month::ok() const noexcept {return 1 <= m_ && m_ <= 12;}
CONSTCD11
inline
bool
operator==(const month& x, const month& y) noexcept
{
return static_cast<unsigned>(x) == static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator!=(const month& x, const month& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const month& x, const month& y) noexcept
{
return static_cast<unsigned>(x) < static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator>(const month& x, const month& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const month& x, const month& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const month& x, const month& y) noexcept
{
return !(x < y);
}
CONSTCD14
inline
months
operator-(const month& x, const month& y) noexcept
{
auto const d = static_cast<unsigned>(x) - static_cast<unsigned>(y);
return months(d <= 11 ? d : d + 12);
}
CONSTCD14
inline
month
operator+(const month& x, const months& y) noexcept
{
auto const mu = static_cast<long long>(static_cast<unsigned>(x)) - 1 + y.count();
auto const yr = (mu >= 0 ? mu : mu-11) / 12;
return month{static_cast<unsigned>(mu - yr * 12 + 1)};
}
CONSTCD14
inline
month
operator+(const months& x, const month& y) noexcept
{
return y + x;
}
CONSTCD14
inline
month
operator-(const month& x, const months& y) noexcept
{
return x + -y;
}
CONSTDATA month jan{1};
CONSTDATA month feb{2};
CONSTDATA month mar{3};
CONSTDATA month apr{4};
CONSTDATA month may{5};
CONSTDATA month jun{6};
CONSTDATA month jul{7};
CONSTDATA month aug{8};
CONSTDATA month sep{9};
CONSTDATA month oct{10};
CONSTDATA month nov{11};
CONSTDATA month dec{12};
inline
std::ostream&
operator<<(std::ostream& os, const month& m)
{
switch (static_cast<unsigned>(m))
{
case 1:
os << "Jan";
break;
case 2:
os << "Feb";
break;
case 3:
os << "Mar";
break;
case 4:
os << "Apr";
break;
case 5:
os << "May";
break;
case 6:
os << "Jun";
break;
case 7:
os << "Jul";
break;
case 8:
os << "Aug";
break;
case 9:
os << "Sep";
break;
case 10:
os << "Oct";
break;
case 11:
os << "Nov";
break;
case 12:
os << "Dec";
break;
default:
os << static_cast<unsigned>(m) << " is not a valid month";
break;
}
return os;
}
// year
CONSTCD11 inline year::year(int y) noexcept : y_(static_cast<decltype(y_)>(y)) {}
inline year& year::operator++() noexcept {++y_; return *this;}
inline year year::operator++(int) noexcept {auto tmp(*this); ++(*this); return tmp;}
inline year& year::operator--() noexcept {--y_; return *this;}
inline year year::operator--(int) noexcept {auto tmp(*this); --(*this); return tmp;}
inline year& year::operator+=(const years& y) noexcept {*this = *this + y; return *this;}
inline year& year::operator-=(const years& y) noexcept {*this = *this - y; return *this;}
CONSTCD11
inline
bool
year::is_leap() const noexcept
{
return y_ % 4 == 0 && (y_ % 100 != 0 || y_ % 400 == 0);
}
CONSTCD11 inline year::operator int() const noexcept {return y_;}
CONSTCD11 inline bool year::ok() const noexcept {return min() <= *this && *this <= max();}
CONSTCD11
inline
year
year::min() noexcept
{
using namespace std::chrono;
static_assert(sizeof(seconds)*CHAR_BIT >= 41, "seconds may overflow");
static_assert(sizeof(hours)*CHAR_BIT >= 30, "hours may overflow");
return sizeof(minutes)*CHAR_BIT < 34 ?
year{1970} + duration_cast<years>(minutes::min()) :
year{std::numeric_limits<short>::min()};
}
CONSTCD11
inline
year
year::max() noexcept
{
using namespace std::chrono;
static_assert(sizeof(seconds)*CHAR_BIT >= 41, "seconds may overflow");
static_assert(sizeof(hours)*CHAR_BIT >= 30, "hours may overflow");
return sizeof(minutes)*CHAR_BIT < 34 ?
year{1969} + duration_cast<years>(minutes::max()) :
year{std::numeric_limits<short>::max()};
}
CONSTCD11
inline
bool
operator==(const year& x, const year& y) noexcept
{
return static_cast<int>(x) == static_cast<int>(y);
}
CONSTCD11
inline
bool
operator!=(const year& x, const year& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year& x, const year& y) noexcept
{
return static_cast<int>(x) < static_cast<int>(y);
}
CONSTCD11
inline
bool
operator>(const year& x, const year& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year& x, const year& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year& x, const year& y) noexcept
{
return !(x < y);
}
CONSTCD11
inline
years
operator-(const year& x, const year& y) noexcept
{
return years{static_cast<int>(x) - static_cast<int>(y)};
}
CONSTCD11
inline
year
operator+(const year& x, const years& y) noexcept
{
return year{static_cast<int>(x) + y.count()};
}
CONSTCD11
inline
year
operator+(const years& x, const year& y) noexcept
{
return y + x;
}
CONSTCD11
inline
year
operator-(const year& x, const years& y) noexcept
{
return year{static_cast<int>(x) - y.count()};
}
inline
std::ostream&
operator<<(std::ostream& os, const year& y)
{
save_stream _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::internal);
os.width(4 + (y < year{0}));
os << static_cast<int>(y);
return os;
}
CONSTCD11
inline
year
operator "" _y(unsigned long long y) noexcept
{
return year(static_cast<int>(y));
}
// weekday
CONSTCD11
inline
unsigned char
weekday::weekday_from_days(int z) noexcept
{
return static_cast<unsigned char>(static_cast<unsigned>(
z >= -4 ? (z+4) % 7 : (z+5) % 7 + 6));
}
CONSTCD11
inline
weekday::weekday(unsigned wd) noexcept
: wd_(static_cast<decltype(wd_)>(wd))
{}
CONSTCD11
inline
weekday::weekday(const day_point& dp) noexcept
: wd_(weekday_from_days(dp.time_since_epoch().count()))
{}
inline weekday& weekday::operator++() noexcept {if (++wd_ == 7) wd_ = 0; return *this;}
inline weekday weekday::operator++(int) noexcept {auto tmp(*this); ++(*this); return tmp;}
inline weekday& weekday::operator--() noexcept {if (wd_-- == 0) wd_ = 6; return *this;}
inline weekday weekday::operator--(int) noexcept {auto tmp(*this); --(*this); return tmp;}
inline
weekday&
weekday::operator+=(const days& d) noexcept
{
*this = *this + d;
return *this;
}
inline
weekday&
weekday::operator-=(const days& d) noexcept
{
*this = *this - d;
return *this;
}
CONSTCD11
inline
weekday::operator unsigned() const noexcept
{
return static_cast<unsigned>(wd_);
}
CONSTCD11 inline bool weekday::ok() const noexcept {return wd_ <= 6;}
CONSTCD11
inline
bool
operator==(const weekday& x, const weekday& y) noexcept
{
return static_cast<unsigned>(x) == static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator!=(const weekday& x, const weekday& y) noexcept
{
return !(x == y);
}
CONSTCD14
inline
days
operator-(const weekday& x, const weekday& y) noexcept
{
auto const diff = static_cast<unsigned>(x) - static_cast<unsigned>(y);
return days{diff <= 6 ? diff : diff + 7};
}
CONSTCD14
inline
weekday
operator+(const weekday& x, const days& y) noexcept
{
auto const wdu = static_cast<long long>(static_cast<unsigned>(x)) + y.count();
auto const wk = (wdu >= 0 ? wdu : wdu-6) / 7;
return weekday{static_cast<unsigned>(wdu - wk * 7)};
}
CONSTCD14
inline
weekday
operator+(const days& x, const weekday& y) noexcept
{
return y + x;
}
CONSTCD14
inline
weekday
operator-(const weekday& x, const days& y) noexcept
{
return x + -y;
}
inline
std::ostream&
operator<<(std::ostream& os, const weekday& wd)
{
switch (static_cast<unsigned>(wd))
{
case 0:
os << "Sun";
break;
case 1:
os << "Mon";
break;
case 2:
os << "Tue";
break;
case 3:
os << "Wed";
break;
case 4:
os << "Thu";
break;
case 5:
os << "Fri";
break;
case 6:
os << "Sat";
break;
default:
os << static_cast<unsigned>(wd) << " is not a valid weekday";
break;
}
return os;
}
CONSTDATA weekday sun{0};
CONSTDATA weekday mon{1};
CONSTDATA weekday tue{2};
CONSTDATA weekday wed{3};
CONSTDATA weekday thu{4};
CONSTDATA weekday fri{5};
CONSTDATA weekday sat{6};
// weekday_indexed
CONSTCD11
inline
weekday
weekday_indexed::weekday() const noexcept
{
return date::weekday{wd_};
}
CONSTCD11 inline unsigned weekday_indexed::index() const noexcept {return index_;}
CONSTCD11
inline
bool
weekday_indexed::ok() const noexcept
{
return weekday().ok() && 1 <= index_ && index_ <= 5;
}
CONSTCD11
inline
weekday_indexed::weekday_indexed(const date::weekday& wd, unsigned index) noexcept
: wd_(static_cast<decltype(wd_)>(static_cast<unsigned>(wd)))
, index_(static_cast<decltype(index_)>(index))
{}
inline
std::ostream&
operator<<(std::ostream& os, const weekday_indexed& wdi)
{
return os << wdi.weekday() << '[' << wdi.index() << ']';
}
CONSTCD11
inline
weekday_indexed
weekday::operator[](unsigned index) const noexcept
{
return {*this, index};
}
CONSTCD11
inline
bool
operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept
{
return x.weekday() == y.weekday() && x.index() == y.index();
}
CONSTCD11
inline
bool
operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept
{
return !(x == y);
}
// weekday_last
CONSTCD11 inline date::weekday weekday_last::weekday() const noexcept {return wd_;}
CONSTCD11 inline bool weekday_last::ok() const noexcept {return wd_.ok();}
CONSTCD11 inline weekday_last::weekday_last(const date::weekday& wd) noexcept : wd_(wd) {}
CONSTCD11
inline
bool
operator==(const weekday_last& x, const weekday_last& y) noexcept
{
return x.weekday() == y.weekday();
}
CONSTCD11
inline
bool
operator!=(const weekday_last& x, const weekday_last& y) noexcept
{
return !(x == y);
}
inline
std::ostream&
operator<<(std::ostream& os, const weekday_last& wdl)
{
return os << wdl.weekday() << "[last]";
}
CONSTCD11
inline
weekday_last
weekday::operator[](last_spec) const noexcept
{
return weekday_last{*this};
}
// year_month
CONSTCD11
inline
year_month::year_month(const date::year& y, const date::month& m) noexcept
: y_(y)
, m_(m)
{}
CONSTCD11 inline year year_month::year() const noexcept {return y_;}
CONSTCD11 inline month year_month::month() const noexcept {return m_;}
CONSTCD11 inline bool year_month::ok() const noexcept {return y_.ok() && m_.ok();}
inline
year_month&
year_month::operator+=(const months& dm) noexcept
{
*this = *this + dm;
return *this;
}
inline
year_month&
year_month::operator-=(const months& dm) noexcept
{
*this = *this - dm;
return *this;
}
inline
year_month&
year_month::operator+=(const years& dy) noexcept
{
*this = *this + dy;
return *this;
}
inline
year_month&
year_month::operator-=(const years& dy) noexcept
{
*this = *this - dy;
return *this;
}
CONSTCD11
inline
bool
operator==(const year_month& x, const year_month& y) noexcept
{
return x.year() == y.year() && x.month() == y.month();
}
CONSTCD11
inline
bool
operator!=(const year_month& x, const year_month& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year_month& x, const year_month& y) noexcept
{
return x.year() < y.year() ? true
: (x.year() > y.year() ? false
: (x.month() < y.month()));
}
CONSTCD11
inline
bool
operator>(const year_month& x, const year_month& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year_month& x, const year_month& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year_month& x, const year_month& y) noexcept
{
return !(x < y);
}
CONSTCD14
inline
year_month
operator+(const year_month& ym, const months& dm) noexcept
{
auto dmi = static_cast<int>(static_cast<unsigned>(ym.month())) - 1 + dm.count();
auto dy = (dmi >= 0 ? dmi : dmi-11) / 12;
dmi = dmi - dy * 12 + 1;
return (ym.year() + years(dy)) / month(static_cast<unsigned>(dmi));
}
CONSTCD14
inline
year_month
operator+(const months& dm, const year_month& ym) noexcept
{
return ym + dm;
}
CONSTCD14
inline
year_month
operator-(const year_month& ym, const months& dm) noexcept
{
return ym + -dm;
}
CONSTCD11
inline
months
operator-(const year_month& x, const year_month& y) noexcept
{
return (x.year() - y.year()) +
months(static_cast<unsigned>(x.month()) - static_cast<unsigned>(y.month()));
}
CONSTCD11
inline
year_month
operator+(const year_month& ym, const years& dy) noexcept
{
return (ym.year() + dy) / ym.month();
}
CONSTCD11
inline
year_month
operator+(const years& dy, const year_month& ym) noexcept
{
return ym + dy;
}
CONSTCD11
inline
year_month
operator-(const year_month& ym, const years& dy) noexcept
{
return ym + -dy;
}
inline
std::ostream&
operator<<(std::ostream& os, const year_month& ym)
{
return os << ym.year() << '/' << ym.month();
}
// month_day
CONSTCD11
inline
month_day::month_day(const date::month& m, const date::day& d) noexcept
: m_(m)
, d_(d)
{}
CONSTCD11 inline date::month month_day::month() const noexcept {return m_;}
CONSTCD11 inline date::day month_day::day() const noexcept {return d_;}
CONSTCD14
inline
bool
month_day::ok() const noexcept
{
CONSTDATA date::day d[] =
{31_d, 29_d, 31_d, 30_d, 31_d, 30_d, 31_d, 31_d, 30_d, 31_d, 30_d, 31_d};
return m_.ok() && 1_d <= d_ && d_ <= d[static_cast<unsigned>(m_)-1];
}
CONSTCD11
inline
bool
operator==(const month_day& x, const month_day& y) noexcept
{
return x.month() == y.month() && x.day() == y.day();
}
CONSTCD11
inline
bool
operator!=(const month_day& x, const month_day& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const month_day& x, const month_day& y) noexcept
{
return x.month() < y.month() ? true
: (x.month() > y.month() ? false
: (x.day() < y.day()));
}
CONSTCD11
inline
bool
operator>(const month_day& x, const month_day& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const month_day& x, const month_day& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const month_day& x, const month_day& y) noexcept
{
return !(x < y);
}
inline
std::ostream&
operator<<(std::ostream& os, const month_day& md)
{
return os << md.month() << '/' << md.day();
}
// month_day_last
CONSTCD11 inline month month_day_last::month() const noexcept {return m_;}
CONSTCD11 inline bool month_day_last::ok() const noexcept {return m_.ok();}
CONSTCD11 inline month_day_last::month_day_last(const date::month& m) noexcept : m_(m) {}
CONSTCD11
inline
bool
operator==(const month_day_last& x, const month_day_last& y) noexcept
{
return x.month() == y.month();
}
CONSTCD11
inline
bool
operator!=(const month_day_last& x, const month_day_last& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const month_day_last& x, const month_day_last& y) noexcept
{
return x.month() < y.month();
}
CONSTCD11
inline
bool
operator>(const month_day_last& x, const month_day_last& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const month_day_last& x, const month_day_last& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const month_day_last& x, const month_day_last& y) noexcept
{
return !(x < y);
}
inline
std::ostream&
operator<<(std::ostream& os, const month_day_last& mdl)
{
return os << mdl.month() << "/last";
}
// month_weekday
CONSTCD11
inline
month_weekday::month_weekday(const date::month& m,
const date::weekday_indexed& wdi) noexcept
: m_(m)
, wdi_(wdi)
{}
CONSTCD11 inline month month_weekday::month() const noexcept {return m_;}
CONSTCD11
inline
weekday_indexed
month_weekday::weekday_indexed() const noexcept
{
return wdi_;
}
CONSTCD11
inline
bool
month_weekday::ok() const noexcept
{
return m_.ok() && wdi_.ok();
}
CONSTCD11
inline
bool
operator==(const month_weekday& x, const month_weekday& y) noexcept
{
return x.month() == y.month() && x.weekday_indexed() == y.weekday_indexed();
}
CONSTCD11
inline
bool
operator!=(const month_weekday& x, const month_weekday& y) noexcept
{
return !(x == y);
}
inline
std::ostream&
operator<<(std::ostream& os, const month_weekday& mwd)
{
return os << mwd.month() << '/' << mwd.weekday_indexed();
}
// month_weekday_last
CONSTCD11
inline
month_weekday_last::month_weekday_last(const date::month& m,
const date::weekday_last& wdl) noexcept
: m_(m)
, wdl_(wdl)
{}
CONSTCD11 inline month month_weekday_last::month() const noexcept {return m_;}
CONSTCD11
inline
weekday_last
month_weekday_last::weekday_last() const noexcept
{
return wdl_;
}
CONSTCD11
inline
bool
month_weekday_last::ok() const noexcept
{
return m_.ok() && wdl_.ok();
}
CONSTCD11
inline
bool
operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept
{
return x.month() == y.month() && x.weekday_last() == y.weekday_last();
}
CONSTCD11
inline
bool
operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept
{
return !(x == y);
}
inline
std::ostream&
operator<<(std::ostream& os, const month_weekday_last& mwdl)
{
return os << mwdl.month() << '/' << mwdl.weekday_last();
}
// year_month_day_last
CONSTCD11
inline
year_month_day_last::year_month_day_last(const date::year& y,
const date::month_day_last& mdl) noexcept
: y_(y)
, mdl_(mdl)
{}
inline
year_month_day_last&
year_month_day_last::operator+=(const months& m) noexcept
{
*this = *this + m;
return *this;
}
inline
year_month_day_last&
year_month_day_last::operator-=(const months& m) noexcept
{
*this = *this - m;
return *this;
}
inline
year_month_day_last&
year_month_day_last::operator+=(const years& y) noexcept
{
*this = *this + y;
return *this;
}
inline
year_month_day_last&
year_month_day_last::operator-=(const years& y) noexcept
{
*this = *this - y;
return *this;
}
CONSTCD11 inline year year_month_day_last::year() const noexcept {return y_;}
CONSTCD11 inline month year_month_day_last::month() const noexcept {return mdl_.month();}
CONSTCD11
inline
month_day_last
year_month_day_last::month_day_last() const noexcept
{
return mdl_;
}
CONSTCD14
inline
day
year_month_day_last::day() const noexcept
{
CONSTDATA date::day d[] =
{31_d, 28_d, 31_d, 30_d, 31_d, 30_d, 31_d, 31_d, 30_d, 31_d, 30_d, 31_d};
return month() != feb || !y_.is_leap() ? d[static_cast<unsigned>(month())-1] : 29_d;
}
CONSTCD11
inline
bool
year_month_day_last::ok() const noexcept
{
return y_.ok() && mdl_.ok();
}
CONSTCD11
inline
bool
operator==(const year_month_day_last& x, const year_month_day_last& y) noexcept
{
return x.year() == y.year() && x.month_day_last() == y.month_day_last();
}
CONSTCD11
inline
bool
operator!=(const year_month_day_last& x, const year_month_day_last& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year_month_day_last& x, const year_month_day_last& y) noexcept
{
return x.year() < y.year() ? true
: (x.year() > y.year() ? false
: (x.month_day_last() < y.month_day_last()));
}
CONSTCD11
inline
bool
operator>(const year_month_day_last& x, const year_month_day_last& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year_month_day_last& x, const year_month_day_last& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year_month_day_last& x, const year_month_day_last& y) noexcept
{
return !(x < y);
}
inline
std::ostream&
operator<<(std::ostream& os, const year_month_day_last& ymdl)
{
return os << ymdl.year() << '/' << ymdl.month_day_last();
}
CONSTCD14
inline
year_month_day_last
operator+(const year_month_day_last& ymdl, const months& dm) noexcept
{
return (ymdl.year() / ymdl.month() + dm) / last;
}
CONSTCD14
inline
year_month_day_last
operator+(const months& dm, const year_month_day_last& ymdl) noexcept
{
return ymdl + dm;
}
CONSTCD14
inline
year_month_day_last
operator-(const year_month_day_last& ymdl, const months& dm) noexcept
{
return ymdl + (-dm);
}
CONSTCD11
inline
year_month_day_last
operator+(const year_month_day_last& ymdl, const years& dy) noexcept
{
return {ymdl.year()+dy, ymdl.month_day_last()};
}
CONSTCD11
inline
year_month_day_last
operator+(const years& dy, const year_month_day_last& ymdl) noexcept
{
return ymdl + dy;
}
CONSTCD11
inline
year_month_day_last
operator-(const year_month_day_last& ymdl, const years& dy) noexcept
{
return ymdl + (-dy);
}
// year_month_day
CONSTCD11
inline
year_month_day::year_month_day(const date::year& y, const date::month& m,
const date::day& d) noexcept
: y_(y)
, m_(m)
, d_(d)
{}
CONSTCD14
inline
year_month_day::year_month_day(const year_month_day_last& ymdl) noexcept
: y_(ymdl.year())
, m_(ymdl.month())
, d_(ymdl.day())
{}
CONSTCD14
inline
year_month_day::year_month_day(const day_point& dp) noexcept
: year_month_day(from_day_point(dp))
{}
CONSTCD11 inline year year_month_day::year() const noexcept {return y_;}
CONSTCD11 inline month year_month_day::month() const noexcept {return m_;}
CONSTCD11 inline day year_month_day::day() const noexcept {return d_;}
inline
year_month_day&
year_month_day::operator+=(const months& m) noexcept
{
*this = *this + m;
return *this;
}
inline
year_month_day&
year_month_day::operator-=(const months& m) noexcept
{
*this = *this - m;
return *this;
}
inline
year_month_day&
year_month_day::operator+=(const years& y) noexcept
{
*this = *this + y;
return *this;
}
inline
year_month_day&
year_month_day::operator-=(const years& y) noexcept
{
*this = *this - y;
return *this;
}
CONSTCD14
inline
year_month_day::operator day_point() const noexcept
{
static_assert(std::numeric_limits<unsigned>::digits >= 18,
"This algorithm has not been ported to a 16 bit unsigned integer");
static_assert(std::numeric_limits<int>::digits >= 20,
"This algorithm has not been ported to a 16 bit signed integer");
auto const y = static_cast<int>(y_) - (m_ <= feb);
auto const m = static_cast<unsigned>(m_);
auto const d = static_cast<unsigned>(d_);
auto const era = (y >= 0 ? y : y-399) / 400;
auto const yoe = static_cast<unsigned>(y - era * 400); // [0, 399]
auto const doy = (153*(m + (m > 2 ? -3u : 9)) + 2)/5 + d-1; // [0, 365]
auto const doe = yoe * 365 + yoe/4 - yoe/100 + doy; // [0, 146096]
return day_point{days{era * 146097 + static_cast<int>(doe) - 719468}};
}
CONSTCD14
inline
year_month_day_last::operator day_point() const noexcept
{
return day_point(year()/month()/day());
}
CONSTCD14
inline
bool
year_month_day::ok() const noexcept
{
if (!(y_.ok() && m_.ok()))
return false;
return 1_d <= d_ && d_ <= (y_/m_/last).day();
}
CONSTCD11
inline
bool
operator==(const year_month_day& x, const year_month_day& y) noexcept
{
return x.year() == y.year() && x.month() == y.month() && x.day() == y.day();
}
CONSTCD11
inline
bool
operator!=(const year_month_day& x, const year_month_day& y) noexcept
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year_month_day& x, const year_month_day& y) noexcept
{
return x.year() < y.year() ? true
: (x.year() > y.year() ? false
: (x.month() < y.month() ? true
: (x.month() > y.month() ? false
: (x.day() < y.day()))));
}
CONSTCD11
inline
bool
operator>(const year_month_day& x, const year_month_day& y) noexcept
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year_month_day& x, const year_month_day& y) noexcept
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year_month_day& x, const year_month_day& y) noexcept
{
return !(x < y);
}
inline
std::ostream&
operator<<(std::ostream& os, const year_month_day& ymd)
{
save_stream _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os << ymd.year() << '-';
os.width(2);
os << static_cast<unsigned>(ymd.month()) << '-';
os << ymd.day();
return os;
}
CONSTCD14
inline
year_month_day
year_month_day::from_day_point(const day_point& dp) noexcept
{
static_assert(std::numeric_limits<unsigned>::digits >= 18,
"This algorithm has not been ported to a 16 bit unsigned integer");
static_assert(std::numeric_limits<int>::digits >= 20,
"This algorithm has not been ported to a 16 bit signed integer");
auto const z = dp.time_since_epoch().count() + 719468;
auto const era = (z >= 0 ? z : z - 146096) / 146097;
auto const doe = static_cast<unsigned>(z - era * 146097); // [0, 146096]
auto const yoe = (doe - doe/1460 + doe/36524 - doe/146096) / 365; // [0, 399]
auto const y = static_cast<day_point::rep>(yoe) + era * 400;
auto const doy = doe - (365*yoe + yoe/4 - yoe/100); // [0, 365]
auto const mp = (5*doy + 2)/153; // [0, 11]
auto const d = doy - (153*mp+2)/5 + 1; // [1, 31]
auto const m = mp + (mp < 10 ? 3 : -9u); // [1, 12]
return year_month_day{date::year{y + (m <= 2)}, date::month(m), date::day(d)};
}
CONSTCD14
inline
year_month_day
operator+(const year_month_day& ymd, const months& dm) noexcept
{
return (ymd.year() / ymd.month() + dm) / ymd.day();
}
CONSTCD14
inline
year_month_day
operator+(const months& dm, const year_month_day& ymd) noexcept
{
return ymd + dm;
}
CONSTCD14
inline
year_month_day
operator-(const year_month_day& ymd, const months& dm) noexcept
{
return ymd + (-dm);
}
CONSTCD11
inline
year_month_day
operator+(const year_month_day& ymd, const years& dy) noexcept
{
return (ymd.year() + dy) / ymd.month() / ymd.day();
}
CONSTCD11
inline
year_month_day
operator+(const years& dy, const year_month_day& ymd) noexcept
{
return ymd + dy;
}
CONSTCD11
inline
year_month_day
operator-(const year_month_day& ymd, const years& dy) noexcept
{
return ymd + (-dy);
}
// year_month_weekday
CONSTCD11
inline
year_month_weekday::year_month_weekday(const date::year& y, const date::month& m,
const date::weekday_indexed& wdi)
noexcept
: y_(y)
, m_(m)
, wdi_(wdi)
{}
CONSTCD14
inline
year_month_weekday::year_month_weekday(const day_point& dp) noexcept
: year_month_weekday(from_day_point(dp))
{}
inline
year_month_weekday&
year_month_weekday::operator+=(const months& m) noexcept
{
*this = *this + m;
return *this;
}
inline
year_month_weekday&
year_month_weekday::operator-=(const months& m) noexcept
{
*this = *this - m;
return *this;
}
inline
year_month_weekday&
year_month_weekday::operator+=(const years& y) noexcept
{
*this = *this + y;
return *this;
}
inline
year_month_weekday&
year_month_weekday::operator-=(const years& y) noexcept
{
*this = *this - y;
return *this;
}
CONSTCD11 inline year year_month_weekday::year() const noexcept {return y_;}
CONSTCD11 inline month year_month_weekday::month() const noexcept {return m_;}
CONSTCD11
inline
weekday_indexed
year_month_weekday::weekday_indexed() const noexcept
{
return wdi_;
}
CONSTCD14
inline
year_month_weekday::operator day_point() const noexcept
{
auto d = day_point(y_/m_/1);
return d + (wdi_.weekday() - weekday(d) + days{(wdi_.index()-1)*7});
}
CONSTCD14
inline
bool
year_month_weekday::ok() const noexcept
{
if (!y_.ok() || !m_.ok() || !wdi_.weekday().ok() || wdi_.index() < 1)
return false;
if (wdi_.index() <= 4)
return true;
auto d2 = wdi_.weekday() - weekday(y_/m_/1) + days((wdi_.index()-1)*7 + 1);
return static_cast<unsigned>(d2.count()) <= static_cast<unsigned>((y_/m_/last).day());
}
CONSTCD14
inline
year_month_weekday
year_month_weekday::from_day_point(const day_point& dp) noexcept
{
auto const wd = weekday(dp);
auto const ymd = year_month_day(dp);
return {ymd.year(), ymd.month(), wd[(static_cast<unsigned>(ymd.day())-1)/7+1]};
}
CONSTCD11
inline
bool
operator==(const year_month_weekday& x, const year_month_weekday& y) noexcept
{
return x.year() == y.year() && x.month() == y.month() &&
x.weekday_indexed() == y.weekday_indexed();
}
CONSTCD11
inline
bool
operator!=(const year_month_weekday& x, const year_month_weekday& y) noexcept
{
return !(x == y);
}
inline
std::ostream&
operator<<(std::ostream& os, const year_month_weekday& ymwdi)
{
return os << ymwdi.year() << '/' << ymwdi.month()
<< '/' << ymwdi.weekday_indexed();
}
CONSTCD14
inline
year_month_weekday
operator+(const year_month_weekday& ymwd, const months& dm) noexcept
{
return (ymwd.year() / ymwd.month() + dm) / ymwd.weekday_indexed();
}
CONSTCD14
inline
year_month_weekday
operator+(const months& dm, const year_month_weekday& ymwd) noexcept
{
return ymwd + dm;
}
CONSTCD14
inline
year_month_weekday
operator-(const year_month_weekday& ymwd, const months& dm) noexcept
{
return ymwd + (-dm);
}
CONSTCD11
inline
year_month_weekday
operator+(const year_month_weekday& ymwd, const years& dy) noexcept
{
return {ymwd.year()+dy, ymwd.month(), ymwd.weekday_indexed()};
}
CONSTCD11
inline
year_month_weekday
operator+(const years& dy, const year_month_weekday& ymwd) noexcept
{
return ymwd + dy;
}
CONSTCD11
inline
year_month_weekday
operator-(const year_month_weekday& ymwd, const years& dy) noexcept
{
return ymwd + (-dy);
}
// year_month_weekday_last
CONSTCD11
inline
year_month_weekday_last::year_month_weekday_last(const date::year& y,
const date::month& m,
const date::weekday_last& wdl) noexcept
: y_(y)
, m_(m)
, wdl_(wdl)
{}
inline
year_month_weekday_last&
year_month_weekday_last::operator+=(const months& m) noexcept
{
*this = *this + m;
return *this;
}
inline
year_month_weekday_last&
year_month_weekday_last::operator-=(const months& m) noexcept
{
*this = *this - m;
return *this;
}
inline
year_month_weekday_last&
year_month_weekday_last::operator+=(const years& y) noexcept
{
*this = *this + y;
return *this;
}
inline
year_month_weekday_last&
year_month_weekday_last::operator-=(const years& y) noexcept
{
*this = *this - y;
return *this;
}
CONSTCD11 inline year year_month_weekday_last::year() const noexcept {return y_;}
CONSTCD11 inline month year_month_weekday_last::month() const noexcept {return m_;}
CONSTCD11
inline
weekday_last
year_month_weekday_last::weekday_last() const noexcept
{
return wdl_;
}
CONSTCD14
inline
year_month_weekday_last::operator day_point() const noexcept
{
auto const d = day_point(y_/m_/last);
return d - (weekday{d} - wdl_.weekday());
}
CONSTCD11
inline
bool
year_month_weekday_last::ok() const noexcept
{
return y_.ok() && m_.ok() && wdl_.ok();
}
CONSTCD11
inline
bool
operator==(const year_month_weekday_last& x, const year_month_weekday_last& y) noexcept
{
return x.year() == y.year() && x.month() == y.month() &&
x.weekday_last() == y.weekday_last();
}
CONSTCD11
inline
bool
operator!=(const year_month_weekday_last& x, const year_month_weekday_last& y) noexcept
{
return !(x == y);
}
inline
std::ostream&
operator<<(std::ostream& os, const year_month_weekday_last& ymwdl)
{
return os << ymwdl.year() << '/' << ymwdl.month() << '/' << ymwdl.weekday_last();
}
CONSTCD14
inline
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept
{
return (ymwdl.year() / ymwdl.month() + dm) / ymwdl.weekday_last();
}
CONSTCD14
inline
year_month_weekday_last
operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept
{
return ymwdl + dm;
}
CONSTCD14
inline
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept
{
return ymwdl + (-dm);
}
CONSTCD11
inline
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept
{
return {ymwdl.year()+dy, ymwdl.month(), ymwdl.weekday_last()};
}
CONSTCD11
inline
year_month_weekday_last
operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept
{
return ymwdl + dy;
}
CONSTCD11
inline
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept
{
return ymwdl + (-dy);
}
// year_month from operator/()
CONSTCD11
inline
year_month
operator/(const year& y, const month& m) noexcept
{
return {y, m};
}
CONSTCD11
inline
year_month
operator/(const year& y, int m) noexcept
{
return y / month(static_cast<unsigned>(m));
}
// month_day from operator/()
CONSTCD11
inline
month_day
operator/(const month& m, const day& d) noexcept
{
return {m, d};
}
CONSTCD11
inline
month_day
operator/(const day& d, const month& m) noexcept
{
return m / d;
}
CONSTCD11
inline
month_day
operator/(const month& m, int d) noexcept
{
return m / day(static_cast<unsigned>(d));
}
CONSTCD11
inline
month_day
operator/(int m, const day& d) noexcept
{
return month(static_cast<unsigned>(m)) / d;
}
CONSTCD11 inline month_day operator/(const day& d, int m) noexcept {return m / d;}
// month_day_last from operator/()
CONSTCD11
inline
month_day_last
operator/(const month& m, last_spec) noexcept
{
return month_day_last{m};
}
CONSTCD11
inline
month_day_last
operator/(last_spec, const month& m) noexcept
{
return m/last;
}
CONSTCD11
inline
month_day_last
operator/(int m, last_spec) noexcept
{
return month(static_cast<unsigned>(m))/last;
}
CONSTCD11
inline
month_day_last
operator/(last_spec, int m) noexcept
{
return m/last;
}
// month_weekday from operator/()
CONSTCD11
inline
month_weekday
operator/(const month& m, const weekday_indexed& wdi) noexcept
{
return {m, wdi};
}
CONSTCD11
inline
month_weekday
operator/(const weekday_indexed& wdi, const month& m) noexcept
{
return m / wdi;
}
CONSTCD11
inline
month_weekday
operator/(int m, const weekday_indexed& wdi) noexcept
{
return month(static_cast<unsigned>(m)) / wdi;
}
CONSTCD11
inline
month_weekday
operator/(const weekday_indexed& wdi, int m) noexcept
{
return m / wdi;
}
// month_weekday_last from operator/()
CONSTCD11
inline
month_weekday_last
operator/(const month& m, const weekday_last& wdl) noexcept
{
return {m, wdl};
}
CONSTCD11
inline
month_weekday_last
operator/(const weekday_last& wdl, const month& m) noexcept
{
return m / wdl;
}
CONSTCD11
inline
month_weekday_last
operator/(int m, const weekday_last& wdl) noexcept
{
return month(static_cast<unsigned>(m)) / wdl;
}
CONSTCD11
inline
month_weekday_last
operator/(const weekday_last& wdl, int m) noexcept
{
return m / wdl;
}
// year_month_day from operator/()
CONSTCD11
inline
year_month_day
operator/(const year_month& ym, const day& d) noexcept
{
return {ym.year(), ym.month(), d};
}
CONSTCD11
inline
year_month_day
operator/(const year_month& ym, int d) noexcept
{
return ym / day(static_cast<unsigned>(d));
}
CONSTCD11
inline
year_month_day
operator/(const year& y, const month_day& md) noexcept
{
return y / md.month() / md.day();
}
CONSTCD11
inline
year_month_day
operator/(int y, const month_day& md) noexcept
{
return year(y) / md;
}
CONSTCD11
inline
year_month_day
operator/(const month_day& md, const year& y) noexcept
{
return y / md;
}
CONSTCD11
inline
year_month_day
operator/(const month_day& md, int y) noexcept
{
return year(y) / md;
}
// year_month_day_last from operator/()
CONSTCD11
inline
year_month_day_last
operator/(const year_month& ym, last_spec) noexcept
{
return {ym.year(), month_day_last{ym.month()}};
}
CONSTCD11
inline
year_month_day_last
operator/(const year& y, const month_day_last& mdl) noexcept
{
return {y, mdl};
}
CONSTCD11
inline
year_month_day_last
operator/(int y, const month_day_last& mdl) noexcept
{
return year(y) / mdl;
}
CONSTCD11
inline
year_month_day_last
operator/(const month_day_last& mdl, const year& y) noexcept
{
return y / mdl;
}
CONSTCD11
inline
year_month_day_last
operator/(const month_day_last& mdl, int y) noexcept
{
return year(y) / mdl;
}
// year_month_weekday from operator/()
CONSTCD11
inline
year_month_weekday
operator/(const year_month& ym, const weekday_indexed& wdi) noexcept
{
return {ym.year(), ym.month(), wdi};
}
CONSTCD11
inline
year_month_weekday
operator/(const year& y, const month_weekday& mwd) noexcept
{
return {y, mwd.month(), mwd.weekday_indexed()};
}
CONSTCD11
inline
year_month_weekday
operator/(int y, const month_weekday& mwd) noexcept
{
return year(y) / mwd;
}
CONSTCD11
inline
year_month_weekday
operator/(const month_weekday& mwd, const year& y) noexcept
{
return y / mwd;
}
CONSTCD11
inline
year_month_weekday
operator/(const month_weekday& mwd, int y) noexcept
{
return year(y) / mwd;
}
// year_month_weekday_last from operator/()
CONSTCD11
inline
year_month_weekday_last
operator/(const year_month& ym, const weekday_last& wdl) noexcept
{
return {ym.year(), ym.month(), wdl};
}
CONSTCD11
inline
year_month_weekday_last
operator/(const year& y, const month_weekday_last& mwdl) noexcept
{
return {y, mwdl.month(), mwdl.weekday_last()};
}
CONSTCD11
inline
year_month_weekday_last
operator/(int y, const month_weekday_last& mwdl) noexcept
{
return year(y) / mwdl;
}
CONSTCD11
inline
year_month_weekday_last
operator/(const month_weekday_last& mwdl, const year& y) noexcept
{
return y / mwdl;
}
CONSTCD11
inline
year_month_weekday_last
operator/(const month_weekday_last& mwdl, int y) noexcept
{
return year(y) / mwdl;
}
// time_of_day
enum {am = 1, pm};
namespace detail
{
enum class classify
{
not_valid,
hour,
minute,
second,
subsecond
};
template <class Duration>
struct classify_duration
{
static CONSTDATA classify value =
Duration{1} >= days{1} ? classify::not_valid :
Duration{1} >= std::chrono::hours{1} ? classify::hour :
Duration{1} >= std::chrono::minutes{1} ? classify::minute :
Duration{1} >= std::chrono::seconds{1} ? classify::second :
classify::subsecond;
};
class time_of_day_base
{
protected:
std::chrono::hours h_;
unsigned char mode_;
enum {is24hr};
CONSTCD11 time_of_day_base(std::chrono::hours h, unsigned m) noexcept
: h_(h)
, mode_(static_cast<decltype(mode_)>(m))
{}
CONSTCD14 void make24() noexcept;
CONSTCD14 void make12() noexcept;
CONSTCD14 std::chrono::hours to24hr() const;
};
CONSTCD14
inline
std::chrono::hours
time_of_day_base::to24hr() const
{
auto h = h_;
if (mode_ == am || mode_ == pm)
{
CONSTDATA auto h12 = std::chrono::hours(12);
if (mode_ == pm)
{
if (h != h12)
h = h + h12;
}
else if (h == h12)
h = std::chrono::hours(0);
}
return h;
}
CONSTCD14
inline
void
time_of_day_base::make24() noexcept
{
h_ = to24hr();
mode_ = is24hr;
}
CONSTCD14
inline
void
time_of_day_base::make12() noexcept
{
if (mode_ == is24hr)
{
CONSTDATA auto h12 = std::chrono::hours(12);
if (h_ >= h12)
{
if (h_ > h12)
h_ = h_ - h12;
mode_ = pm;
}
else
{
if (h_ == std::chrono::hours(0))
h_ = h12;
mode_ = am;
}
}
}
template <class Duration, detail::classify = detail::classify_duration<Duration>::value>
class time_of_day_storage;
template <class Rep, class Period>
class time_of_day_storage<std::chrono::duration<Rep, Period>, detail::classify::hour>
: private detail::time_of_day_base
{
using base = detail::time_of_day_base;
public:
using precision = std::chrono::hours;
CONSTCD11 explicit time_of_day_storage(std::chrono::hours since_midnight) noexcept
: base(since_midnight, is24hr)
{}
CONSTCD11 explicit time_of_day_storage(std::chrono::hours h, unsigned md) noexcept
: base(h, md)
{}
CONSTCD11 std::chrono::hours hours() const noexcept {return h_;}
CONSTCD11 unsigned mode() const noexcept {return mode_;}
CONSTCD14 explicit operator precision() const noexcept
{
return to24hr();
}
CONSTCD14 precision to_duration() const noexcept
{
return static_cast<precision>(*this);
}
CONSTCD14 time_of_day_storage& make24() noexcept {base::make24(); return *this;}
CONSTCD14 time_of_day_storage& make12() noexcept {base::make12(); return *this;}
friend
std::ostream&
operator<<(std::ostream& os, const time_of_day_storage& t)
{
using namespace std;
save_stream _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
if (t.mode_ != am && t.mode_ != pm)
os.width(2);
os << t.h_.count();
switch (t.mode_)
{
case time_of_day_storage::is24hr:
os << "00";
break;
case am:
os << "am";
break;
case pm:
os << "pm";
break;
}
return os;
}
};
template <class Rep, class Period>
class time_of_day_storage<std::chrono::duration<Rep, Period>, detail::classify::minute>
: private detail::time_of_day_base
{
using base = detail::time_of_day_base;
std::chrono::minutes m_;
public:
using precision = std::chrono::minutes;
CONSTCD11 explicit time_of_day_storage(std::chrono::minutes since_midnight) noexcept
: base(std::chrono::duration_cast<std::chrono::hours>(since_midnight), is24hr)
, m_(since_midnight - h_)
{}
CONSTCD11 explicit time_of_day_storage(std::chrono::hours h, std::chrono::minutes m,
unsigned md) noexcept
: base(h, md)
, m_(m)
{}
CONSTCD11 std::chrono::hours hours() const noexcept {return h_;}
CONSTCD11 std::chrono::minutes minutes() const noexcept {return m_;}
CONSTCD11 unsigned mode() const noexcept {return mode_;}
CONSTCD14 explicit operator precision() const noexcept
{
return to24hr() + m_;
}
CONSTCD14 precision to_duration() const noexcept
{
return static_cast<precision>(*this);
}
CONSTCD14 time_of_day_storage& make24() noexcept {base::make24(); return *this;}
CONSTCD14 time_of_day_storage& make12() noexcept {base::make12(); return *this;}
friend
std::ostream&
operator<<(std::ostream& os, const time_of_day_storage& t)
{
using namespace std;
save_stream _(os);
if (static_cast<precision>(t) < std::chrono::hours{0})
os << '-';
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
if (t.mode_ != am && t.mode_ != pm)
os.width(2);
os << abs(t.h_.count()) << ':';
os.width(2);
os << abs(t.m_.count());
switch (t.mode_)
{
case am:
os << "am";
break;
case pm:
os << "pm";
break;
}
return os;
}
};
template <class Rep, class Period>
class time_of_day_storage<std::chrono::duration<Rep, Period>, detail::classify::second>
: private detail::time_of_day_base
{
using base = detail::time_of_day_base;
std::chrono::minutes m_;
std::chrono::seconds s_;
public:
using precision = std::chrono::seconds;
CONSTCD11 explicit time_of_day_storage(std::chrono::seconds since_midnight) noexcept
: base(std::chrono::duration_cast<std::chrono::hours>(since_midnight), is24hr)
, m_(std::chrono::duration_cast<std::chrono::minutes>(since_midnight - h_))
, s_(since_midnight - h_ - m_)
{}
CONSTCD11 explicit time_of_day_storage(std::chrono::hours h, std::chrono::minutes m,
std::chrono::seconds s, unsigned md) noexcept
: base(h, md)
, m_(m)
, s_(s)
{}
CONSTCD11 std::chrono::hours hours() const noexcept {return h_;}
CONSTCD11 std::chrono::minutes minutes() const noexcept {return m_;}
CONSTCD11 std::chrono::seconds seconds() const noexcept {return s_;}
CONSTCD11 unsigned mode() const noexcept {return mode_;}
CONSTCD14 explicit operator precision() const noexcept
{
return to24hr() + m_ + s_;
}
CONSTCD14 precision to_duration() const noexcept
{
return static_cast<precision>(*this);
}
CONSTCD14 time_of_day_storage& make24() noexcept {base::make24(); return *this;}
CONSTCD14 time_of_day_storage& make12() noexcept {base::make12(); return *this;}
friend
std::ostream&
operator<<(std::ostream& os, const time_of_day_storage& t)
{
using namespace std;
save_stream _(os);
if (static_cast<precision>(t) < std::chrono::hours{0})
os << '-';
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
if (t.mode_ != am && t.mode_ != pm)
os.width(2);
os << abs(t.h_.count()) << ':';
os.width(2);
os << abs(t.m_.count()) << ':';
os.width(2);
os << abs(t.s_.count());
switch (t.mode_)
{
case am:
os << "am";
break;
case pm:
os << "pm";
break;
}
return os;
}
};
template <class Rep, class Period>
class time_of_day_storage<std::chrono::duration<Rep, Period>, detail::classify::subsecond>
: private detail::time_of_day_base
{
public:
using precision = std::chrono::duration<Rep, Period>;
private:
using base = detail::time_of_day_base;
std::chrono::minutes m_;
std::chrono::seconds s_;
precision sub_s_;
public:
CONSTCD11 explicit time_of_day_storage(precision since_midnight) noexcept
: base(std::chrono::duration_cast<std::chrono::hours>(since_midnight), is24hr)
, m_(std::chrono::duration_cast<std::chrono::minutes>(since_midnight - h_))
, s_(std::chrono::duration_cast<std::chrono::seconds>(since_midnight - h_ - m_))
, sub_s_(since_midnight - h_ - m_ - s_)
{}
CONSTCD11 explicit time_of_day_storage(std::chrono::hours h, std::chrono::minutes m,
std::chrono::seconds s, precision sub_s,
unsigned md) noexcept
: base(h, md)
, m_(m)
, s_(s)
, sub_s_(sub_s)
{}
CONSTCD11 std::chrono::hours hours() const noexcept {return h_;}
CONSTCD11 std::chrono::minutes minutes() const noexcept {return m_;}
CONSTCD11 std::chrono::seconds seconds() const noexcept {return s_;}
CONSTCD11 precision subseconds() const noexcept {return sub_s_;}
CONSTCD11 unsigned mode() const noexcept {return mode_;}
CONSTCD14 explicit operator precision() const noexcept
{
return to24hr() + m_ + s_ + sub_s_;
}
CONSTCD14 precision to_duration() const noexcept
{
return static_cast<precision>(*this);
}
CONSTCD14 time_of_day_storage& make24() noexcept {base::make24(); return *this;}
CONSTCD14 time_of_day_storage& make12() noexcept {base::make12(); return *this;}
friend
std::ostream&
operator<<(std::ostream& os, const time_of_day_storage& t)
{
using namespace std;
save_stream _(os);
if (static_cast<precision>(t) < std::chrono::hours{0})
os << '-';
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
if (t.mode_ != am && t.mode_ != pm)
os.width(2);
os << abs(t.h_.count()) << ':';
os.width(2);
os << abs(t.m_.count()) << ':';
os.width(2);
os << abs(t.s_.count()) << '.';
#if __cplusplus >= 201402
CONSTDATA auto cl10 = ceil_log10(Period::den);
using scale = std::ratio_multiply<Period, std::ratio<pow10(cl10)>>;
os.width(cl10);
os << abs(t.sub_s_.count()) * scale::num / scale::den;
#else // __cplusplus >= 201402
// inefficient sub-optimal run-time mess, but gets the job done
const unsigned long long cl10 = std::ceil(log10(Period::den));
const auto p10 = std::pow(10., cl10);
os.width(cl10);
os << static_cast<unsigned long long>(abs(t.sub_s_.count())
* Period::num * p10 / Period::den);
#endif // __cplusplus >= 201402
switch (t.mode_)
{
case am:
os << "am";
break;
case pm:
os << "pm";
break;
}
return os;
}
private:
#if __cplusplus >= 201402
CONSTCD11 static int ceil_log10(unsigned long long i) noexcept
{
--i;
int n = 0;
if (i >= 10000000000000000) {i /= 10000000000000000; n += 16;}
if (i >= 100000000) {i /= 100000000; n += 8;}
if (i >= 10000) {i /= 10000; n += 4;}
if (i >= 100) {i /= 100; n += 2;}
if (i >= 10) {i /= 10; n += 1;}
if (i >= 1) {i /= 10; n += 1;}
return n;
}
CONSTCD11 static unsigned long long pow10(unsigned y) noexcept
{
CONSTDATA unsigned long long p10[] =
{
1ull,
10ull,
100ull,
1000ull,
10000ull,
100000ull,
1000000ull,
10000000ull,
100000000ull,
1000000000ull,
10000000000ull,
100000000000ull,
1000000000000ull,
10000000000000ull,
100000000000000ull,
1000000000000000ull,
10000000000000000ull,
100000000000000000ull,
1000000000000000000ull,
10000000000000000000ull
};
return p10[y];
}
#endif // __cplusplus >= 201402
};
} // namespace detail
template <class Duration>
class time_of_day
: public detail::time_of_day_storage<Duration>
{
using base = detail::time_of_day_storage<Duration>;
public:
using base::base;
};
template <class Rep, class Period,
class = typename std::enable_if
<!std::chrono::treat_as_floating_point<Rep>::value>::type>
CONSTCD11
inline
time_of_day<std::chrono::duration<Rep, Period>>
make_time(std::chrono::duration<Rep, Period> d) noexcept
{
return time_of_day<std::chrono::duration<Rep, Period>>(d);
}
CONSTCD11
inline
time_of_day<std::chrono::hours>
make_time(std::chrono::hours h, unsigned md) noexcept
{
return time_of_day<std::chrono::hours>(h, md);
}
CONSTCD11
inline
time_of_day<std::chrono::minutes>
make_time(std::chrono::hours h, std::chrono::minutes m, unsigned md) noexcept
{
return time_of_day<std::chrono::minutes>(h, m, md);
}
CONSTCD11
inline
time_of_day<std::chrono::seconds>
make_time(std::chrono::hours h, std::chrono::minutes m, std::chrono::seconds s,
unsigned md) noexcept
{
return time_of_day<std::chrono::seconds>(h, m, s, md);
}
template <class Rep, class Period,
class = typename std::enable_if<std::ratio_less<Period,
std::ratio<1>>::value>::type>
CONSTCD11
inline
time_of_day<std::chrono::duration<Rep, Period>>
make_time(std::chrono::hours h, std::chrono::minutes m, std::chrono::seconds s,
std::chrono::duration<Rep, Period> sub_s, unsigned md) noexcept
{
return time_of_day<std::chrono::duration<Rep, Period>>(h, m, s, sub_s, md);
}
template <class Duration>
inline
typename std::enable_if
<
!std::chrono::treat_as_floating_point<typename Duration::rep>::value &&
std::ratio_less<typename Duration::period, days::period>::value
, std::ostream&
>::type
operator<<(std::ostream& os,
const std::chrono::time_point<std::chrono::system_clock, Duration>& tp)
{
auto const dp = floor<days>(tp);
return os << year_month_day(dp) << ' ' << make_time(tp-dp);
}
inline
std::ostream&
operator<<(std::ostream& os, const day_point& dp)
{
return os << year_month_day(dp);
}
} // namespace date
#endif // DATE_H
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