1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H 11 #define _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H 12 13 #include <__chrono/calendar.h> 14 #include <__chrono/day.h> 15 #include <__chrono/duration.h> 16 #include <__chrono/month.h> 17 #include <__chrono/month_weekday.h> 18 #include <__chrono/system_clock.h> 19 #include <__chrono/time_point.h> 20 #include <__chrono/weekday.h> 21 #include <__chrono/year.h> 22 #include <__chrono/year_month.h> 23 #include <__chrono/year_month_day.h> 24 #include <__config> 25 26 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 27 # pragma GCC system_header 28 #endif 29 30 #if _LIBCPP_STD_VER >= 20 31 32 _LIBCPP_BEGIN_NAMESPACE_STD 33 34 namespace chrono { 35 36 class year_month_weekday { 37 chrono::year __y_; 38 chrono::month __m_; 39 chrono::weekday_indexed __wdi_; 40 41 public: 42 year_month_weekday() = default; 43 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday( 44 const chrono::year& __yval, const chrono::month& __mval, const chrono::weekday_indexed& __wdival) noexcept 45 : __y_{__yval}, __m_{__mval}, __wdi_{__wdival} {} 46 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday(const sys_days& __sysd) noexcept 47 : year_month_weekday(__from_days(__sysd.time_since_epoch())) {} 48 _LIBCPP_HIDE_FROM_ABI inline explicit constexpr year_month_weekday(const local_days& __locd) noexcept 49 : year_month_weekday(__from_days(__locd.time_since_epoch())) {} 50 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator+=(const months&) noexcept; 51 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator-=(const months&) noexcept; 52 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator+=(const years&) noexcept; 53 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday& operator-=(const years&) noexcept; 54 55 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; } 56 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } 57 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wdi_.weekday(); } 58 _LIBCPP_HIDE_FROM_ABI inline constexpr unsigned index() const noexcept { return __wdi_.index(); } 59 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi_; } 60 61 _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } 62 _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept { 63 return local_days{__to_days()}; 64 } 65 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { 66 if (!__y_.ok() || !__m_.ok() || !__wdi_.ok()) 67 return false; 68 if (__wdi_.index() <= 4) 69 return true; 70 auto __nth_weekday_day = 71 __wdi_.weekday() - chrono::weekday{static_cast<sys_days>(__y_ / __m_ / 1)} + days{(__wdi_.index() - 1) * 7 + 1}; 72 return static_cast<unsigned>(__nth_weekday_day.count()) <= static_cast<unsigned>((__y_ / __m_ / last).day()); 73 } 74 75 _LIBCPP_HIDE_FROM_ABI static constexpr year_month_weekday __from_days(days __d) noexcept; 76 _LIBCPP_HIDE_FROM_ABI constexpr days __to_days() const noexcept; 77 }; 78 79 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday year_month_weekday::__from_days(days __d) noexcept { 80 const sys_days __sysd{__d}; 81 const chrono::weekday __wd = chrono::weekday(__sysd); 82 const year_month_day __ymd = year_month_day(__sysd); 83 return year_month_weekday{__ymd.year(), __ymd.month(), __wd[(static_cast<unsigned>(__ymd.day()) - 1) / 7 + 1]}; 84 } 85 86 _LIBCPP_HIDE_FROM_ABI inline constexpr days year_month_weekday::__to_days() const noexcept { 87 const sys_days __sysd = sys_days(__y_ / __m_ / 1); 88 return (__sysd + (__wdi_.weekday() - chrono::weekday(__sysd) + days{(__wdi_.index() - 1) * 7})).time_since_epoch(); 89 } 90 91 _LIBCPP_HIDE_FROM_ABI inline constexpr bool 92 operator==(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept { 93 return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && 94 __lhs.weekday_indexed() == __rhs.weekday_indexed(); 95 } 96 97 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 98 operator/(const year_month& __lhs, const weekday_indexed& __rhs) noexcept { 99 return year_month_weekday{__lhs.year(), __lhs.month(), __rhs}; 100 } 101 102 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 103 operator/(const year& __lhs, const month_weekday& __rhs) noexcept { 104 return year_month_weekday{__lhs, __rhs.month(), __rhs.weekday_indexed()}; 105 } 106 107 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday operator/(int __lhs, const month_weekday& __rhs) noexcept { 108 return year(__lhs) / __rhs; 109 } 110 111 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 112 operator/(const month_weekday& __lhs, const year& __rhs) noexcept { 113 return __rhs / __lhs; 114 } 115 116 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday operator/(const month_weekday& __lhs, int __rhs) noexcept { 117 return year(__rhs) / __lhs; 118 } 119 120 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 121 operator+(const year_month_weekday& __lhs, const months& __rhs) noexcept { 122 return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_indexed(); 123 } 124 125 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 126 operator+(const months& __lhs, const year_month_weekday& __rhs) noexcept { 127 return __rhs + __lhs; 128 } 129 130 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 131 operator-(const year_month_weekday& __lhs, const months& __rhs) noexcept { 132 return __lhs + (-__rhs); 133 } 134 135 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 136 operator+(const year_month_weekday& __lhs, const years& __rhs) noexcept { 137 return year_month_weekday{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_indexed()}; 138 } 139 140 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 141 operator+(const years& __lhs, const year_month_weekday& __rhs) noexcept { 142 return __rhs + __lhs; 143 } 144 145 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday 146 operator-(const year_month_weekday& __lhs, const years& __rhs) noexcept { 147 return __lhs + (-__rhs); 148 } 149 150 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator+=(const months& __dm) noexcept { 151 *this = *this + __dm; 152 return *this; 153 } 154 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator-=(const months& __dm) noexcept { 155 *this = *this - __dm; 156 return *this; 157 } 158 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator+=(const years& __dy) noexcept { 159 *this = *this + __dy; 160 return *this; 161 } 162 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator-=(const years& __dy) noexcept { 163 *this = *this - __dy; 164 return *this; 165 } 166 167 class year_month_weekday_last { 168 private: 169 chrono::year __y_; 170 chrono::month __m_; 171 chrono::weekday_last __wdl_; 172 173 public: 174 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last( 175 const chrono::year& __yval, const chrono::month& __mval, const chrono::weekday_last& __wdlval) noexcept 176 : __y_{__yval}, __m_{__mval}, __wdl_{__wdlval} {} 177 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator+=(const months& __dm) noexcept; 178 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator-=(const months& __dm) noexcept; 179 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator+=(const years& __dy) noexcept; 180 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator-=(const years& __dy) noexcept; 181 182 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; } 183 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; } 184 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wdl_.weekday(); } 185 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl_; } 186 _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } 187 _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept { 188 return local_days{__to_days()}; 189 } 190 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y_.ok() && __m_.ok() && __wdl_.ok(); } 191 192 _LIBCPP_HIDE_FROM_ABI constexpr days __to_days() const noexcept; 193 }; 194 195 _LIBCPP_HIDE_FROM_ABI inline constexpr days year_month_weekday_last::__to_days() const noexcept { 196 const sys_days __last = sys_days{__y_ / __m_ / last}; 197 return (__last - (chrono::weekday{__last} - __wdl_.weekday())).time_since_epoch(); 198 } 199 200 _LIBCPP_HIDE_FROM_ABI inline constexpr bool 201 operator==(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept { 202 return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); 203 } 204 205 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 206 operator/(const year_month& __lhs, const weekday_last& __rhs) noexcept { 207 return year_month_weekday_last{__lhs.year(), __lhs.month(), __rhs}; 208 } 209 210 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 211 operator/(const year& __lhs, const month_weekday_last& __rhs) noexcept { 212 return year_month_weekday_last{__lhs, __rhs.month(), __rhs.weekday_last()}; 213 } 214 215 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 216 operator/(int __lhs, const month_weekday_last& __rhs) noexcept { 217 return year(__lhs) / __rhs; 218 } 219 220 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 221 operator/(const month_weekday_last& __lhs, const year& __rhs) noexcept { 222 return __rhs / __lhs; 223 } 224 225 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 226 operator/(const month_weekday_last& __lhs, int __rhs) noexcept { 227 return year(__rhs) / __lhs; 228 } 229 230 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 231 operator+(const year_month_weekday_last& __lhs, const months& __rhs) noexcept { 232 return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_last(); 233 } 234 235 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 236 operator+(const months& __lhs, const year_month_weekday_last& __rhs) noexcept { 237 return __rhs + __lhs; 238 } 239 240 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 241 operator-(const year_month_weekday_last& __lhs, const months& __rhs) noexcept { 242 return __lhs + (-__rhs); 243 } 244 245 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 246 operator+(const year_month_weekday_last& __lhs, const years& __rhs) noexcept { 247 return year_month_weekday_last{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_last()}; 248 } 249 250 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 251 operator+(const years& __lhs, const year_month_weekday_last& __rhs) noexcept { 252 return __rhs + __lhs; 253 } 254 255 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last 256 operator-(const year_month_weekday_last& __lhs, const years& __rhs) noexcept { 257 return __lhs + (-__rhs); 258 } 259 260 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& 261 year_month_weekday_last::operator+=(const months& __dm) noexcept { 262 *this = *this + __dm; 263 return *this; 264 } 265 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& 266 year_month_weekday_last::operator-=(const months& __dm) noexcept { 267 *this = *this - __dm; 268 return *this; 269 } 270 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& 271 year_month_weekday_last::operator+=(const years& __dy) noexcept { 272 *this = *this + __dy; 273 return *this; 274 } 275 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& 276 year_month_weekday_last::operator-=(const years& __dy) noexcept { 277 *this = *this - __dy; 278 return *this; 279 } 280 281 } // namespace chrono 282 283 _LIBCPP_END_NAMESPACE_STD 284 285 #endif // _LIBCPP_STD_VER >= 20 286 287 #endif // _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H 288