1 // The MIT License (MIT)
2 //
3 // Copyright (c) 2015, 2016 Howard Hinnant
4 //
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
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9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
11 //
12 // The above copyright notice and this permission notice shall be included in all
13 // copies or substantial portions of the Software.
14 //
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 // SOFTWARE.
22 
23 // class year_weeknum_weekday
24 
25 // class year_weeknum_weekday
26 // {
27 // public:
28 //     constexpr year_weeknum_weekday(const iso_week::year& y, const iso_week::weeknum& wn,
29 //                                    const iso_week::weekday& wd) noexcept;
30 //     constexpr year_weeknum_weekday(const year_lastweek_weekday& ylwwd) noexcept;
31 //     constexpr year_weeknum_weekday(const sys_days& dp) noexcept;
32 //
33 //     year_weeknum_weekday& operator+=(const years& y) noexcept;
34 //     year_weeknum_weekday& operator-=(const years& y) noexcept;
35 //
36 //     constexpr iso_week::year    year()    const noexcept;
37 //     constexpr iso_week::weeknum weeknum() const noexcept;
38 //     constexpr iso_week::weekday weekday() const noexcept;
39 //
40 //     constexpr operator sys_days() const noexcept;
41 //     constexpr bool ok() const noexcept;
42 // };
43 //
44 // constexpr bool operator==(const year_weeknum_weekday& x, const year_weeknum_weekday& y) noexcept;
45 // constexpr bool operator!=(const year_weeknum_weekday& x, const year_weeknum_weekday& y) noexcept;
46 // constexpr bool operator< (const year_weeknum_weekday& x, const year_weeknum_weekday& y) noexcept;
47 // constexpr bool operator> (const year_weeknum_weekday& x, const year_weeknum_weekday& y) noexcept;
48 // constexpr bool operator<=(const year_weeknum_weekday& x, const year_weeknum_weekday& y) noexcept;
49 // constexpr bool operator>=(const year_weeknum_weekday& x, const year_weeknum_weekday& y) noexcept;
50 //
51 // constexpr year_weeknum_weekday operator+(const year_weeknum_weekday& ywnwd, const years& y) noexcept;
52 // constexpr year_weeknum_weekday operator+(const years& y, const year_weeknum_weekday& ywnwd) noexcept;
53 // constexpr year_weeknum_weekday operator-(const year_weeknum_weekday& ywnwd, const years& y) noexcept;
54 //
55 // std::ostream& operator<<(std::ostream& os, const year_weeknum_weekday& ywnwd);
56 
57 #include "iso_week.h"
58 
59 #include <cassert>
60 #include <sstream>
61 #include <type_traits>
62 
63 static_assert( std::is_trivially_destructible<iso_week::year_weeknum_weekday>{}, "");
64 static_assert(!std::is_default_constructible<iso_week::year_weeknum_weekday>{}, "");
65 static_assert( std::is_trivially_copy_constructible<iso_week::year_weeknum_weekday>{}, "");
66 static_assert( std::is_trivially_copy_assignable<iso_week::year_weeknum_weekday>{}, "");
67 static_assert( std::is_trivially_move_constructible<iso_week::year_weeknum_weekday>{}, "");
68 static_assert( std::is_trivially_move_assignable<iso_week::year_weeknum_weekday>{}, "");
69 
70 static_assert(std::is_trivially_copyable<iso_week::year_weeknum_weekday>{}, "");
71 static_assert(std::is_standard_layout<iso_week::year_weeknum_weekday>{}, "");
72 static_assert(std::is_literal_type<iso_week::year_weeknum_weekday>{}, "");
73 
74 static_assert( std::is_nothrow_constructible<iso_week::year_weeknum_weekday,
75                                                  iso_week::year, iso_week::weeknum,
76                                                  iso_week::weekday>{}, "");
77 static_assert( std::is_nothrow_constructible<iso_week::year_weeknum_weekday,
78                                                  iso_week::year_lastweek_weekday>{}, "");
79 static_assert( std::is_convertible<iso_week::year_lastweek_weekday,
80                                        iso_week::year_weeknum_weekday>{}, "");
81 static_assert( std::is_nothrow_constructible<iso_week::year_weeknum_weekday,
82                                                  iso_week::sys_days>{}, "");
83 static_assert( std::is_convertible<iso_week::sys_days,
84                                        iso_week::year_weeknum_weekday>{}, "");
85 static_assert( std::is_nothrow_constructible<iso_week::sys_days,
86                                                  iso_week::year_weeknum_weekday>{}, "");
87 static_assert( std::is_convertible<iso_week::year_weeknum_weekday,
88                                        iso_week::sys_days>{}, "");
89 
90 int
main()91 main()
92 {
93     using namespace iso_week;
94 
95     constexpr auto x0 = year_weeknum_weekday{2015_y, 52_w, tue};
96     static_assert(x0.year() == 2015_y, "");
97     static_assert(x0.weeknum() == 52_w, "");
98     static_assert(x0.weekday() == tue, "");
99 
100     constexpr auto x1 = year_weeknum_weekday{2015_y/last/tue};
101     static_assert(x1.year() == 2015_y, "");
102     static_assert(x1.weeknum() == 53_w, "");
103     static_assert(x1.weekday() == tue, "");
104 
105     constexpr year_weeknum_weekday x2 = sys_days{days{16792}};
106     static_assert(x2.year() == 2015_y, "");
107     static_assert(x2.weeknum() == 52_w, "");
108     static_assert(x2.weekday() == wed, "");
109 
110     auto x3 = x2;
111     x3 += years{2};
112     assert(x3.year() == 2017_y);
113     assert(x3.weeknum() == 52_w);
114     assert(x3.weekday() == wed);
115 
116     x3 -= years{1};
117     assert(x3.year() == 2016_y);
118     assert(x3.weeknum() == 52_w);
119     assert(x3.weekday() == wed);
120 
121     constexpr sys_days dp = 2015_y/52_w/wed;
122     static_assert(dp == sys_days{days{16792}}, "");
123 
124     static_assert(x0.ok(), "");
125     static_assert(x1.ok(), "");
126     static_assert(x2.ok(), "");
127     assert(x3.ok());
128     static_assert(!(2016_y/53_w/sun).ok(), "");
129 
130     static_assert(2015_y/52_w/mon < 2015_y/52_w/sun, "");
131 
132     static_assert(x0 + years{3} == 2018_y/52_w/tue, "");
133     static_assert(years{3} + x0 == 2018_y/52_w/tue, "");
134     static_assert(x0 - years{3} == 2012_y/52_w/tue, "");
135 
136     std::ostringstream os;
137     os << x0;
138     assert(os.str() == "2015-W52-Tue");
139 }
140