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6458742a | 1 | // { dg-do run { target c++17 } } |
ca8f2cb1 | 2 | |
a945c346 | 3 | // Copyright (C) 2013-2024 Free Software Foundation, Inc. |
ca8f2cb1 VV |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | // string_view size, length | |
21 | ||
22 | #include <string_view> | |
23 | #include <cstring> | |
24 | #include <testsuite_hooks.h> | |
25 | ||
26 | template<typename T> | |
27 | struct A { }; | |
28 | ||
29 | template<typename T> | |
30 | bool | |
31 | operator==(const A<T>&, const A<T>&) { return true; } | |
32 | ||
33 | template<typename T> | |
34 | bool | |
35 | operator<(const A<T>&, const A<T>&) { return true; } | |
36 | ||
37 | struct B { }; | |
38 | ||
39 | // char_traits specialization | |
40 | namespace std | |
41 | { | |
42 | template<> | |
43 | struct char_traits<A<B> > | |
44 | { | |
45 | typedef A<B> char_type; | |
46 | // Unsigned as wint_t in unsigned. | |
47 | typedef unsigned long int_type; | |
42d3f743 | 48 | #if __STDC_HOSTED__ |
ca8f2cb1 VV |
49 | typedef streampos pos_type; |
50 | typedef streamoff off_type; | |
51 | typedef mbstate_t state_type; | |
42d3f743 | 52 | #endif // HOSTED |
ca8f2cb1 VV |
53 | |
54 | static void | |
55 | assign(char_type& __c1, const char_type& __c2) | |
56 | { __c1 = __c2; } | |
57 | ||
58 | static bool | |
59 | eq(const char_type& __c1, const char_type& __c2) | |
60 | { return __c1 == __c2; } | |
61 | ||
62 | static bool | |
63 | lt(const char_type& __c1, const char_type& __c2) | |
64 | { return __c1 < __c2; } | |
65 | ||
66 | static int | |
67 | compare(const char_type* __s1, const char_type* __s2, size_t __n) | |
68 | { | |
69 | for (size_t __i = 0; __i < __n; ++__i) | |
70 | if (!eq(__s1[__i], __s2[__i])) | |
71 | return lt(__s1[__i], __s2[__i]) ? -1 : 1; | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static size_t | |
76 | length(const char_type* __s) | |
77 | { | |
78 | const char_type* __p = __s; | |
79 | while (__p) | |
80 | ++__p; | |
81 | return (__p - __s); | |
82 | } | |
83 | ||
84 | static const char_type* | |
85 | find(const char_type* __s, size_t __n, const char_type& __a) | |
86 | { | |
87 | for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p) | |
88 | if (*__p == __a) return __p; | |
89 | return 0; | |
90 | } | |
91 | ||
92 | static char_type* | |
93 | move(char_type* __s1, const char_type* __s2, size_t __n) | |
94 | { return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); } | |
95 | ||
96 | static char_type* | |
97 | copy(char_type* __s1, const char_type* __s2, size_t __n) | |
98 | { return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); } | |
99 | ||
100 | static char_type* | |
101 | assign(char_type* __s, size_t __n, char_type __a) | |
102 | { | |
103 | for (char_type* __p = __s; __p < __s + __n; ++__p) | |
104 | assign(*__p, __a); | |
105 | return __s; | |
106 | } | |
107 | ||
108 | static char_type | |
109 | to_char_type(const int_type&) | |
110 | { return char_type(); } | |
111 | ||
112 | static int_type | |
113 | to_int_type(const char_type&) { return int_type(); } | |
114 | ||
115 | static bool | |
116 | eq_int_type(const int_type& __c1, const int_type& __c2) | |
117 | { return __c1 == __c2; } | |
118 | ||
119 | static int_type | |
120 | eof() { return static_cast<int_type>(-1); } | |
121 | ||
122 | static int_type | |
123 | not_eof(const int_type& __c) | |
124 | { return eq_int_type(__c, eof()) ? int_type(0) : __c; } | |
125 | }; | |
126 | } // namespace std | |
127 | ||
128 | void | |
129 | test01() | |
130 | { | |
ca8f2cb1 VV |
131 | std::basic_string_view<A<B>> str02; |
132 | typedef std::basic_string_view< A<B> >::size_type size_type_o; | |
133 | size_type_o sz03; | |
134 | size_type_o sz04; | |
135 | ||
136 | // non-POD types: size, length, max_size, empty() | |
137 | bool b01 = str02.empty(); | |
138 | VERIFY( b01 == true ); | |
139 | sz03 = str02.size(); | |
140 | sz04 = str02.length(); | |
141 | VERIFY( sz03 == sz04 ); | |
b911ca42 | 142 | (void) str02.data(); |
ca8f2cb1 VV |
143 | sz03 = str02.size(); |
144 | sz04 = str02.length(); | |
145 | VERIFY( sz03 == sz04 ); | |
146 | ||
147 | sz03 = str02.max_size(); | |
148 | VERIFY( sz03 >= sz04 ); | |
149 | ||
150 | sz03 = str02.size(); | |
151 | str02 = {}; | |
152 | b01 = str02.empty(); | |
153 | VERIFY( b01 == true ); | |
154 | sz04 = str02.size(); | |
155 | VERIFY( sz03 >= sz04 ); | |
156 | } | |
157 | ||
158 | int | |
159 | main() | |
160 | { | |
161 | test01(); | |
162 | ||
163 | return 0; | |
164 | } |