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;
year_month_weekday(const chrono::year & __yval,const chrono::month & __mval,const chrono::weekday_indexed & __wdival)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} {}
year_month_weekday(const sys_days & __sysd)46 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday(const sys_days& __sysd) noexcept
47 : year_month_weekday(__from_days(__sysd.time_since_epoch())) {}
year_month_weekday(const local_days & __locd)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
year()55 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; }
month()56 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }
weekday()57 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wdi_.weekday(); }
index()58 _LIBCPP_HIDE_FROM_ABI inline constexpr unsigned index() const noexcept { return __wdi_.index(); }
weekday_indexed()59 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi_; }
60
sys_days()61 _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
local_days()62 _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept {
63 return local_days{__to_days()};
64 }
ok()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
__from_days(days __d)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
__to_days()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:
year_month_weekday_last(const chrono::year & __yval,const chrono::month & __mval,const chrono::weekday_last & __wdlval)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
year()182 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; }
month()183 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }
weekday()184 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wdl_.weekday(); }
weekday_last()185 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl_; }
sys_days()186 _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
local_days()187 _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept {
188 return local_days{__to_days()};
189 }
ok()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
__to_days()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