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
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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
18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 // SOFTWARE.
22 
23 #include "iso_week.h"
24 
25 #include <type_traits>
26 
27 template <class I, class J, class K>
28 constexpr
29 auto
test(I i,J j,K k)30 test(I i, J j, K k) -> decltype(i/j/k)
31 {
32     return i/j/k;
33 }
34 
35 void
test(...)36 test(...)
37 {
38 }
39 
40 int
main()41 main()
42 {
43     using std::is_same;
44     using namespace iso_week;
45 
46     static_assert(is_same<decltype(test(   1,    1,    1)), int>{}, "");
47     static_assert(is_same<decltype(test(   1,    1,  mon)), void>{}, "");
48     static_assert(is_same<decltype(test(   1,    1,  1_w)), void>{}, "");
49     static_assert(is_same<decltype(test(   1,    1,  1_y)), void>{}, "");
50     static_assert(is_same<decltype(test(   1,    1, last)), void>{}, "");
51 
52     static_assert(is_same<decltype(test(   1,  mon,    1)), void>{}, "");
53     static_assert(is_same<decltype(test(   1,  mon,  mon)), void>{}, "");
54     static_assert(is_same<decltype(test(   1,  mon,  1_w)), void>{}, "");
55     static_assert(is_same<decltype(test(   1,  mon,  1_y)), void>{}, "");
56     static_assert(is_same<decltype(test(   1,  mon, last)), void>{}, "");
57 
58     static_assert(is_same<decltype(test(   1,  1_w,    1)), void>{}, "");
59     static_assert(is_same<decltype(test(   1,  1_w,  mon)), void>{}, "");
60     static_assert(is_same<decltype(test(   1,  1_w,  1_w)), void>{}, "");
61     static_assert(is_same<decltype(test(   1,  1_w,  1_y)), void>{}, "");
62     static_assert(is_same<decltype(test(   1,  1_w, last)), void>{}, "");
63 
64     static_assert(is_same<decltype(test(   1,  1_y,    1)), void>{}, "");
65     static_assert(is_same<decltype(test(   1,  1_y,  mon)), void>{}, "");
66     static_assert(is_same<decltype(test(   1,  1_y,  1_w)), void>{}, "");
67     static_assert(is_same<decltype(test(   1,  1_y,  1_y)), void>{}, "");
68     static_assert(is_same<decltype(test(   1,  1_y, last)), void>{}, "");
69 
70     static_assert(is_same<decltype(test(   1, last,    1)), void>{}, "");
71     static_assert(is_same<decltype(test(   1, last,  mon)), void>{}, "");
72     static_assert(is_same<decltype(test(   1, last,  1_w)), void>{}, "");
73     static_assert(is_same<decltype(test(   1, last,  1_y)), void>{}, "");
74     static_assert(is_same<decltype(test(   1, last, last)), void>{}, "");
75 
76     static_assert(is_same<decltype(test( mon,    1,    1)), year_weeknum_weekday>{}, "");
77     static_assert(is_same<decltype(test( mon,    1,  mon)), void>{}, "");
78     static_assert(is_same<decltype(test( mon,    1,  1_w)), void>{}, "");
79     static_assert(is_same<decltype(test( mon,    1,  1_y)), year_weeknum_weekday>{}, "");
80     static_assert(is_same<decltype(test( mon,    1, last)), void>{}, "");
81 
82     static_assert(is_same<decltype(test( mon,  mon,    1)), void>{}, "");
83     static_assert(is_same<decltype(test( mon,  mon,  mon)), void>{}, "");
84     static_assert(is_same<decltype(test( mon,  mon,  1_w)), void>{}, "");
85     static_assert(is_same<decltype(test( mon,  mon,  1_y)), void>{}, "");
86     static_assert(is_same<decltype(test( mon,  mon, last)), void>{}, "");
87 
88     static_assert(is_same<decltype(test( mon,  1_w,    1)), year_weeknum_weekday>{}, "");
89     static_assert(is_same<decltype(test( mon,  1_w,  mon)), void>{}, "");
90     static_assert(is_same<decltype(test( mon,  1_w,  1_w)), void>{}, "");
91     static_assert(is_same<decltype(test( mon,  1_w,  1_y)), year_weeknum_weekday>{}, "");
92     static_assert(is_same<decltype(test( mon,  1_w, last)), void>{}, "");
93 
94     static_assert(is_same<decltype(test( mon,  1_y,    1)), void>{}, "");
95     static_assert(is_same<decltype(test( mon,  1_y,  mon)), void>{}, "");
96     static_assert(is_same<decltype(test( mon,  1_y,  1_w)), void>{}, "");
97     static_assert(is_same<decltype(test( mon,  1_y,  1_y)), void>{}, "");
98     static_assert(is_same<decltype(test( mon,  1_y, last)), void>{}, "");
99 
100     static_assert(is_same<decltype(test( mon, last,    1)), year_lastweek_weekday>{}, "");
101     static_assert(is_same<decltype(test( mon, last,  mon)), void>{}, "");
102     static_assert(is_same<decltype(test( mon, last,  1_w)), void>{}, "");
103     static_assert(is_same<decltype(test( mon, last,  1_y)), year_lastweek_weekday>{}, "");
104     static_assert(is_same<decltype(test( mon, last, last)), void>{}, "");
105 
106     static_assert(is_same<decltype(test( 1_w,    1,    1)), year_weeknum_weekday>{}, "");
107     static_assert(is_same<decltype(test( 1_w,    1,  mon)), void>{}, "");
108     static_assert(is_same<decltype(test( 1_w,    1,  1_w)), void>{}, "");
109     static_assert(is_same<decltype(test( 1_w,    1,  1_y)), year_weeknum_weekday>{}, "");
110     static_assert(is_same<decltype(test( 1_w,    1, last)), void>{}, "");
111 
112     static_assert(is_same<decltype(test( 1_w,  mon,    1)), year_weeknum_weekday>{}, "");
113     static_assert(is_same<decltype(test( 1_w,  mon,  mon)), void>{}, "");
114     static_assert(is_same<decltype(test( 1_w,  mon,  1_w)), void>{}, "");
115     static_assert(is_same<decltype(test( 1_w,  mon,  1_y)), year_weeknum_weekday>{}, "");
116     static_assert(is_same<decltype(test( 1_w,  mon, last)), void>{}, "");
117 
118     static_assert(is_same<decltype(test( 1_w,  1_w,    1)), void>{}, "");
119     static_assert(is_same<decltype(test( 1_w,  1_w,  mon)), void>{}, "");
120     static_assert(is_same<decltype(test( 1_w,  1_w,  1_w)), void>{}, "");
121     static_assert(is_same<decltype(test( 1_w,  1_w,  1_y)), void>{}, "");
122     static_assert(is_same<decltype(test( 1_w,  1_w, last)), void>{}, "");
123 
124     static_assert(is_same<decltype(test( 1_w,  1_y,    1)), void>{}, "");
125     static_assert(is_same<decltype(test( 1_w,  1_y,  mon)), void>{}, "");
126     static_assert(is_same<decltype(test( 1_w,  1_y,  1_w)), void>{}, "");
127     static_assert(is_same<decltype(test( 1_w,  1_y,  1_y)), void>{}, "");
128     static_assert(is_same<decltype(test( 1_w,  1_y, last)), void>{}, "");
129 
130     static_assert(is_same<decltype(test( 1_w, last,    1)), void>{}, "");
131     static_assert(is_same<decltype(test( 1_w, last,  mon)), void>{}, "");
132     static_assert(is_same<decltype(test( 1_w, last,  1_w)), void>{}, "");
133     static_assert(is_same<decltype(test( 1_w, last,  1_y)), void>{}, "");
134     static_assert(is_same<decltype(test( 1_w, last, last)), void>{}, "");
135 
136     static_assert(is_same<decltype(test( 1_y,    1,    1)), year_weeknum_weekday>{}, "");
137     static_assert(is_same<decltype(test( 1_y,    1,  mon)), year_weeknum_weekday>{}, "");
138     static_assert(is_same<decltype(test( 1_y,    1,  1_w)), void>{}, "");
139     static_assert(is_same<decltype(test( 1_y,    1,  1_y)), void>{}, "");
140     static_assert(is_same<decltype(test( 1_y,    1, last)), void>{}, "");
141 
142     static_assert(is_same<decltype(test( 1_y,  mon,    1)), void>{}, "");
143     static_assert(is_same<decltype(test( 1_y,  mon,  mon)), void>{}, "");
144     static_assert(is_same<decltype(test( 1_y,  mon,  1_w)), void>{}, "");
145     static_assert(is_same<decltype(test( 1_y,  mon,  1_y)), void>{}, "");
146     static_assert(is_same<decltype(test( 1_y,  mon, last)), void>{}, "");
147 
148     static_assert(is_same<decltype(test( 1_y,  1_w,    1)), year_weeknum_weekday>{}, "");
149     static_assert(is_same<decltype(test( 1_y,  1_w,  mon)), year_weeknum_weekday>{}, "");
150     static_assert(is_same<decltype(test( 1_y,  1_w,  1_w)), void>{}, "");
151     static_assert(is_same<decltype(test( 1_y,  1_w,  1_y)), void>{}, "");
152     static_assert(is_same<decltype(test( 1_y,  1_w, last)), void>{}, "");
153 
154     static_assert(is_same<decltype(test( 1_y,  1_y,    1)), void>{}, "");
155     static_assert(is_same<decltype(test( 1_y,  1_y,  mon)), void>{}, "");
156     static_assert(is_same<decltype(test( 1_y,  1_y,  1_w)), void>{}, "");
157     static_assert(is_same<decltype(test( 1_y,  1_y,  1_y)), void>{}, "");
158     static_assert(is_same<decltype(test( 1_y,  1_y, last)), void>{}, "");
159 
160     static_assert(is_same<decltype(test( 1_y, last,    1)), year_lastweek_weekday>{}, "");
161     static_assert(is_same<decltype(test( 1_y, last,  mon)), year_lastweek_weekday>{}, "");
162     static_assert(is_same<decltype(test( 1_y, last,  1_w)), void>{}, "");
163     static_assert(is_same<decltype(test( 1_y, last,  1_y)), void>{}, "");
164     static_assert(is_same<decltype(test( 1_y, last, last)), void>{}, "");
165 
166     static_assert(is_same<decltype(test(last,    1,    1)), year_lastweek_weekday>{}, "");
167     static_assert(is_same<decltype(test(last,    1,  mon)), void>{}, "");
168     static_assert(is_same<decltype(test(last,    1,  1_w)), void>{}, "");
169     static_assert(is_same<decltype(test(last,    1,  1_y)), year_lastweek_weekday>{}, "");
170     static_assert(is_same<decltype(test(last,    1, last)), void>{}, "");
171 
172     static_assert(is_same<decltype(test(last,  mon,    1)), year_lastweek_weekday>{}, "");
173     static_assert(is_same<decltype(test(last,  mon,  mon)), void>{}, "");
174     static_assert(is_same<decltype(test(last,  mon,  1_w)), void>{}, "");
175     static_assert(is_same<decltype(test(last,  mon,  1_y)), year_lastweek_weekday>{}, "");
176     static_assert(is_same<decltype(test(last,  mon, last)), void>{}, "");
177 
178     static_assert(is_same<decltype(test(last,  1_w,    1)), void>{}, "");
179     static_assert(is_same<decltype(test(last,  1_w,  mon)), void>{}, "");
180     static_assert(is_same<decltype(test(last,  1_w,  1_w)), void>{}, "");
181     static_assert(is_same<decltype(test(last,  1_w,  1_y)), void>{}, "");
182     static_assert(is_same<decltype(test(last,  1_w, last)), void>{}, "");
183 
184     static_assert(is_same<decltype(test(last,  1_y,    1)), void>{}, "");
185     static_assert(is_same<decltype(test(last,  1_y,  mon)), void>{}, "");
186     static_assert(is_same<decltype(test(last,  1_y,  1_w)), void>{}, "");
187     static_assert(is_same<decltype(test(last,  1_y,  1_y)), void>{}, "");
188     static_assert(is_same<decltype(test(last,  1_y, last)), void>{}, "");
189 
190     static_assert(is_same<decltype(test(last, last,    1)), void>{}, "");
191     static_assert(is_same<decltype(test(last, last,  mon)), void>{}, "");
192     static_assert(is_same<decltype(test(last, last,  1_w)), void>{}, "");
193     static_assert(is_same<decltype(test(last, last,  1_y)), void>{}, "");
194     static_assert(is_same<decltype(test(last, last, last)), void>{}, "");
195 
196 }
197