2 //===----------------------------------------------------------------------===//
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
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H
11 #define _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H
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>
26 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
27 # pragma GCC system_header
30 #if _LIBCPP_STD_VER > 17
32 _LIBCPP_BEGIN_NAMESPACE_STD
37 class year_month_weekday {
40 chrono::weekday_indexed __wdi;
42 _LIBCPP_HIDE_FROM_ABI year_month_weekday() = default;
43 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday(const chrono::year& __yval, const chrono::month& __mval,
44 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;
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; }
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 { return local_days{__to_days()}; }
63 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept
65 if (!__y.ok() || !__m.ok() || !__wdi.ok()) return false;
66 if (__wdi.index() <= 4) return true;
67 auto __nth_weekday_day =
69 chrono::weekday{static_cast<sys_days>(__y / __m / 1)} +
70 days{(__wdi.index() - 1) * 7 + 1};
71 return static_cast<unsigned>(__nth_weekday_day.count()) <=
72 static_cast<unsigned>((__y / __m / last).day());
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;
79 _LIBCPP_HIDE_FROM_ABI inline constexpr
80 year_month_weekday year_month_weekday::__from_days(days __d) noexcept
82 const sys_days __sysd{__d};
83 const chrono::weekday __wd = chrono::weekday(__sysd);
84 const year_month_day __ymd = year_month_day(__sysd);
85 return year_month_weekday{__ymd.year(), __ymd.month(),
86 __wd[(static_cast<unsigned>(__ymd.day())-1)/7+1]};
89 _LIBCPP_HIDE_FROM_ABI inline constexpr
90 days year_month_weekday::__to_days() const noexcept
92 const sys_days __sysd = sys_days(__y/__m/1);
93 return (__sysd + (__wdi.weekday() - chrono::weekday(__sysd) + days{(__wdi.index()-1)*7}))
97 _LIBCPP_HIDE_FROM_ABI inline constexpr
98 bool operator==(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept
99 { return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); }
101 _LIBCPP_HIDE_FROM_ABI inline constexpr
102 bool operator!=(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept
103 { return !(__lhs == __rhs); }
105 _LIBCPP_HIDE_FROM_ABI inline constexpr
106 year_month_weekday operator/(const year_month& __lhs, const weekday_indexed& __rhs) noexcept
107 { return year_month_weekday{__lhs.year(), __lhs.month(), __rhs}; }
109 _LIBCPP_HIDE_FROM_ABI inline constexpr
110 year_month_weekday operator/(const year& __lhs, const month_weekday& __rhs) noexcept
111 { return year_month_weekday{__lhs, __rhs.month(), __rhs.weekday_indexed()}; }
113 _LIBCPP_HIDE_FROM_ABI inline constexpr
114 year_month_weekday operator/(int __lhs, const month_weekday& __rhs) noexcept
115 { return year(__lhs) / __rhs; }
117 _LIBCPP_HIDE_FROM_ABI inline constexpr
118 year_month_weekday operator/(const month_weekday& __lhs, const year& __rhs) noexcept
119 { return __rhs / __lhs; }
121 _LIBCPP_HIDE_FROM_ABI inline constexpr
122 year_month_weekday operator/(const month_weekday& __lhs, int __rhs) noexcept
123 { return year(__rhs) / __lhs; }
126 _LIBCPP_HIDE_FROM_ABI inline constexpr
127 year_month_weekday operator+(const year_month_weekday& __lhs, const months& __rhs) noexcept
128 { return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_indexed(); }
130 _LIBCPP_HIDE_FROM_ABI inline constexpr
131 year_month_weekday operator+(const months& __lhs, const year_month_weekday& __rhs) noexcept
132 { return __rhs + __lhs; }
134 _LIBCPP_HIDE_FROM_ABI inline constexpr
135 year_month_weekday operator-(const year_month_weekday& __lhs, const months& __rhs) noexcept
136 { return __lhs + (-__rhs); }
138 _LIBCPP_HIDE_FROM_ABI inline constexpr
139 year_month_weekday operator+(const year_month_weekday& __lhs, const years& __rhs) noexcept
140 { return year_month_weekday{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_indexed()}; }
142 _LIBCPP_HIDE_FROM_ABI inline constexpr
143 year_month_weekday operator+(const years& __lhs, const year_month_weekday& __rhs) noexcept
144 { return __rhs + __lhs; }
146 _LIBCPP_HIDE_FROM_ABI inline constexpr
147 year_month_weekday operator-(const year_month_weekday& __lhs, const years& __rhs) noexcept
148 { return __lhs + (-__rhs); }
151 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
152 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
153 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
154 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday& year_month_weekday::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
156 class year_month_weekday_last {
160 chrono::weekday_last __wdl;
162 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last(const chrono::year& __yval, const chrono::month& __mval,
163 const chrono::weekday_last& __wdlval) noexcept
164 : __y{__yval}, __m{__mval}, __wdl{__wdlval} {}
165 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator+=(const months& __dm) noexcept;
166 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator-=(const months& __dm) noexcept;
167 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator+=(const years& __dy) noexcept;
168 _LIBCPP_HIDE_FROM_ABI constexpr year_month_weekday_last& operator-=(const years& __dy) noexcept;
170 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y; }
171 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m; }
172 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday weekday() const noexcept { return __wdl.weekday(); }
173 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl; }
174 _LIBCPP_HIDE_FROM_ABI inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
175 _LIBCPP_HIDE_FROM_ABI inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; }
176 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok() && __wdl.ok(); }
178 _LIBCPP_HIDE_FROM_ABI constexpr days __to_days() const noexcept;
182 _LIBCPP_HIDE_FROM_ABI inline constexpr
183 days year_month_weekday_last::__to_days() const noexcept
185 const sys_days __last = sys_days{__y/__m/last};
186 return (__last - (chrono::weekday{__last} - __wdl.weekday())).time_since_epoch();
190 _LIBCPP_HIDE_FROM_ABI inline constexpr
191 bool operator==(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept
192 { return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); }
194 _LIBCPP_HIDE_FROM_ABI inline constexpr
195 bool operator!=(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept
196 { return !(__lhs == __rhs); }
199 _LIBCPP_HIDE_FROM_ABI inline constexpr
200 year_month_weekday_last operator/(const year_month& __lhs, const weekday_last& __rhs) noexcept
201 { return year_month_weekday_last{__lhs.year(), __lhs.month(), __rhs}; }
203 _LIBCPP_HIDE_FROM_ABI inline constexpr
204 year_month_weekday_last operator/(const year& __lhs, const month_weekday_last& __rhs) noexcept
205 { return year_month_weekday_last{__lhs, __rhs.month(), __rhs.weekday_last()}; }
207 _LIBCPP_HIDE_FROM_ABI inline constexpr
208 year_month_weekday_last operator/(int __lhs, const month_weekday_last& __rhs) noexcept
209 { return year(__lhs) / __rhs; }
211 _LIBCPP_HIDE_FROM_ABI inline constexpr
212 year_month_weekday_last operator/(const month_weekday_last& __lhs, const year& __rhs) noexcept
213 { return __rhs / __lhs; }
215 _LIBCPP_HIDE_FROM_ABI inline constexpr
216 year_month_weekday_last operator/(const month_weekday_last& __lhs, int __rhs) noexcept
217 { return year(__rhs) / __lhs; }
220 _LIBCPP_HIDE_FROM_ABI inline constexpr
221 year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const months& __rhs) noexcept
222 { return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_last(); }
224 _LIBCPP_HIDE_FROM_ABI inline constexpr
225 year_month_weekday_last operator+(const months& __lhs, const year_month_weekday_last& __rhs) noexcept
226 { return __rhs + __lhs; }
228 _LIBCPP_HIDE_FROM_ABI inline constexpr
229 year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const months& __rhs) noexcept
230 { return __lhs + (-__rhs); }
232 _LIBCPP_HIDE_FROM_ABI inline constexpr
233 year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const years& __rhs) noexcept
234 { return year_month_weekday_last{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_last()}; }
236 _LIBCPP_HIDE_FROM_ABI inline constexpr
237 year_month_weekday_last operator+(const years& __lhs, const year_month_weekday_last& __rhs) noexcept
238 { return __rhs + __lhs; }
240 _LIBCPP_HIDE_FROM_ABI inline constexpr
241 year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const years& __rhs) noexcept
242 { return __lhs + (-__rhs); }
244 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
245 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
246 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
247 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
249 } // namespace chrono
251 _LIBCPP_END_NAMESPACE_STD
253 #endif // _LIBCPP_STD_VER > 17
255 #endif // _LIBCPP___CHRONO_YEAR_MONTH_WEEKDAY_H