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1 | // { dg-options "-std=gnu++17" } |
2 | ||
8d9254fc | 3 | // Copyright (C) 2013-2020 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; | |
48 | typedef streampos pos_type; | |
49 | typedef streamoff off_type; | |
50 | typedef mbstate_t state_type; | |
51 | ||
52 | static void | |
53 | assign(char_type& __c1, const char_type& __c2) | |
54 | { __c1 = __c2; } | |
55 | ||
56 | static bool | |
57 | eq(const char_type& __c1, const char_type& __c2) | |
58 | { return __c1 == __c2; } | |
59 | ||
60 | static bool | |
61 | lt(const char_type& __c1, const char_type& __c2) | |
62 | { return __c1 < __c2; } | |
63 | ||
64 | static int | |
65 | compare(const char_type* __s1, const char_type* __s2, size_t __n) | |
66 | { | |
67 | for (size_t __i = 0; __i < __n; ++__i) | |
68 | if (!eq(__s1[__i], __s2[__i])) | |
69 | return lt(__s1[__i], __s2[__i]) ? -1 : 1; | |
70 | return 0; | |
71 | } | |
72 | ||
73 | static size_t | |
74 | length(const char_type* __s) | |
75 | { | |
76 | const char_type* __p = __s; | |
77 | while (__p) | |
78 | ++__p; | |
79 | return (__p - __s); | |
80 | } | |
81 | ||
82 | static const char_type* | |
83 | find(const char_type* __s, size_t __n, const char_type& __a) | |
84 | { | |
85 | for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p) | |
86 | if (*__p == __a) return __p; | |
87 | return 0; | |
88 | } | |
89 | ||
90 | static char_type* | |
91 | move(char_type* __s1, const char_type* __s2, size_t __n) | |
92 | { return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); } | |
93 | ||
94 | static char_type* | |
95 | copy(char_type* __s1, const char_type* __s2, size_t __n) | |
96 | { return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); } | |
97 | ||
98 | static char_type* | |
99 | assign(char_type* __s, size_t __n, char_type __a) | |
100 | { | |
101 | for (char_type* __p = __s; __p < __s + __n; ++__p) | |
102 | assign(*__p, __a); | |
103 | return __s; | |
104 | } | |
105 | ||
106 | static char_type | |
107 | to_char_type(const int_type&) | |
108 | { return char_type(); } | |
109 | ||
110 | static int_type | |
111 | to_int_type(const char_type&) { return int_type(); } | |
112 | ||
113 | static bool | |
114 | eq_int_type(const int_type& __c1, const int_type& __c2) | |
115 | { return __c1 == __c2; } | |
116 | ||
117 | static int_type | |
118 | eof() { return static_cast<int_type>(-1); } | |
119 | ||
120 | static int_type | |
121 | not_eof(const int_type& __c) | |
122 | { return eq_int_type(__c, eof()) ? int_type(0) : __c; } | |
123 | }; | |
124 | } // namespace std | |
125 | ||
126 | void | |
127 | test01() | |
128 | { | |
ca8f2cb1 VV |
129 | std::basic_string_view<A<B>> str02; |
130 | typedef std::basic_string_view< A<B> >::size_type size_type_o; | |
131 | size_type_o sz03; | |
132 | size_type_o sz04; | |
133 | ||
134 | // non-POD types: size, length, max_size, empty() | |
135 | bool b01 = str02.empty(); | |
136 | VERIFY( b01 == true ); | |
137 | sz03 = str02.size(); | |
138 | sz04 = str02.length(); | |
139 | VERIFY( sz03 == sz04 ); | |
140 | str02.data(); | |
141 | sz03 = str02.size(); | |
142 | sz04 = str02.length(); | |
143 | VERIFY( sz03 == sz04 ); | |
144 | ||
145 | sz03 = str02.max_size(); | |
146 | VERIFY( sz03 >= sz04 ); | |
147 | ||
148 | sz03 = str02.size(); | |
149 | str02 = {}; | |
150 | b01 = str02.empty(); | |
151 | VERIFY( b01 == true ); | |
152 | sz04 = str02.size(); | |
153 | VERIFY( sz03 >= sz04 ); | |
154 | } | |
155 | ||
156 | int | |
157 | main() | |
158 | { | |
159 | test01(); | |
160 | ||
161 | return 0; | |
162 | } |