end.pass.cpp
2.97 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <string_view>
// constexpr const_iterator end() const;
#include <string_view>
#include <cassert>
#include <cstddef>
#include "test_macros.h"
template <class S>
void
test(S s)
{
const S& cs = s;
typename S::iterator e = s.end();
typename S::const_iterator ce1 = cs.end();
typename S::const_iterator ce2 = s.cend();
if (s.empty())
{
assert( e == s.begin());
assert(ce1 == cs.begin());
assert(ce2 == s.begin());
}
else
{
assert( e != s.begin());
assert(ce1 != cs.begin());
assert(ce2 != s.begin());
}
assert(static_cast<std::size_t>( e - s.begin()) == s.size());
assert(static_cast<std::size_t>(ce1 - cs.begin()) == cs.size());
assert(static_cast<std::size_t>(ce2 - s.cbegin()) == s.size());
assert( e == ce1);
assert( e == ce2);
assert(ce1 == ce2);
}
int main(int, char**)
{
typedef std::string_view string_view;
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
typedef std::u8string_view u8string_view;
#endif
typedef std::u16string_view u16string_view;
typedef std::u32string_view u32string_view;
typedef std::wstring_view wstring_view;
test(string_view ());
test(u16string_view());
test(u32string_view());
test(wstring_view ());
test(string_view ( "123"));
test(wstring_view (L"123"));
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
test(u8string_view{u8"123"});
#endif
#if TEST_STD_VER >= 11
test(u16string_view{u"123"});
test(u32string_view{U"123"});
#endif
#if TEST_STD_VER > 11
{
constexpr string_view sv { "123", 3 };
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
constexpr u8string_view u8sv {u8"123", 3 };
#endif
constexpr u16string_view u16sv {u"123", 3 };
constexpr u32string_view u32sv {U"123", 3 };
constexpr wstring_view wsv {L"123", 3 };
static_assert ( sv.begin() != sv.end(), "" );
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
static_assert ( u8sv.begin() != u8sv.end(), "" );
#endif
static_assert ( u16sv.begin() != u16sv.end(), "" );
static_assert ( u32sv.begin() != u32sv.end(), "" );
static_assert ( wsv.begin() != wsv.end(), "" );
static_assert ( sv.begin() != sv.cend(), "" );
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
static_assert ( u8sv.begin() != u8sv.cend(), "" );
#endif
static_assert ( u16sv.begin() != u16sv.cend(), "" );
static_assert ( u32sv.begin() != u32sv.cend(), "" );
static_assert ( wsv.begin() != wsv.cend(), "" );
}
#endif
return 0;
}