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
|
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
// <string_view>
// constexpr size_type find(charT c, size_type pos = 0) const;
#include <string_view>
#include <cassert>
#include "test_macros.h"
#include "constexpr_char_traits.h"
template <class S>
void
test(const S& s, typename S::value_type c, typename S::size_type pos,
typename S::size_type x)
{
LIBCPP_ASSERT_NOEXCEPT(s.find(c, pos));
assert(s.find(c, pos) == x);
if (x != S::npos)
assert(pos <= x && x + 1 <= s.size());
}
template <class S>
void
test(const S& s, typename S::value_type c, typename S::size_type x)
{
assert(s.find(c) == x);
if (x != S::npos)
assert(0 <= x && x + 1 <= s.size());
}
int main(int, char**)
{
{
typedef std::string_view S;
test(S(""), 'c', 0, S::npos);
test(S(""), 'c', 1, S::npos);
test(S("abcde"), 'c', 0, 2);
test(S("abcde"), 'c', 1, 2);
test(S("abcde"), 'c', 2, 2);
test(S("abcde"), 'c', 4, S::npos);
test(S("abcde"), 'c', 5, S::npos);
test(S("abcde"), 'c', 6, S::npos);
test(S("abcdeabcde"), 'c', 0, 2);
test(S("abcdeabcde"), 'c', 1, 2);
test(S("abcdeabcde"), 'c', 5, 7);
test(S("abcdeabcde"), 'c', 9, S::npos);
test(S("abcdeabcde"), 'c', 10, S::npos);
test(S("abcdeabcde"), 'c', 11, S::npos);
test(S("abcdeabcdeabcdeabcde"), 'c', 0, 2);
test(S("abcdeabcdeabcdeabcde"), 'c', 1, 2);
test(S("abcdeabcdeabcdeabcde"), 'c', 10, 12);
test(S("abcdeabcdeabcdeabcde"), 'c', 19, S::npos);
test(S("abcdeabcdeabcdeabcde"), 'c', 20, S::npos);
test(S("abcdeabcdeabcdeabcde"), 'c', 21, S::npos);
test(S(""), 'c', S::npos);
test(S("abcde"), 'c', 2);
test(S("abcdeabcde"), 'c', 2);
test(S("abcdeabcdeabcdeabcde"), 'c', 2);
}
#if TEST_STD_VER > 11
{
typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
constexpr SV sv1;
constexpr SV sv2 { "abcde", 5 };
static_assert (sv1.find( 'c', 0 ) == SV::npos, "" );
static_assert (sv1.find( 'c', 1 ) == SV::npos, "" );
static_assert (sv2.find( 'c', 0 ) == 2, "" );
static_assert (sv2.find( 'c', 1 ) == 2, "" );
static_assert (sv2.find( 'c', 2 ) == 2, "" );
static_assert (sv2.find( 'c', 3 ) == SV::npos, "" );
static_assert (sv2.find( 'c', 4 ) == SV::npos, "" );
}
#endif
return 0;
}
|
