1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <string_view>
10
11 // constexpr basic_string_view(const _CharT* _s, size_type _len)
12 // : __data (_s), __size(_len) {}
13
14
15 #include <string_view>
16 #include <string>
17 #include <cassert>
18
19 #include "test_macros.h"
20
21 template<typename CharT>
test(const CharT * s,size_t sz)22 void test ( const CharT *s, size_t sz ) {
23 {
24 typedef std::basic_string_view<CharT> SV;
25 LIBCPP_ASSERT_NOEXCEPT(SV(s, sz));
26
27 SV sv1 ( s, sz );
28 assert ( sv1.size() == sz );
29 assert ( sv1.data() == s );
30 }
31 }
32
main(int,char **)33 int main(int, char**) {
34
35 test ( "QBCDE", 5 );
36 test ( "QBCDE", 2 );
37 test ( "", 0 );
38 #if TEST_STD_VER > 11
39 {
40 constexpr const char *s = "QBCDE";
41 constexpr std::basic_string_view<char> sv1 ( s, 2 );
42 static_assert ( sv1.size() == 2, "" );
43 static_assert ( sv1.data() == s, "" );
44 }
45 #endif
46
47 test ( L"QBCDE", 5 );
48 test ( L"QBCDE", 2 );
49 test ( L"", 0 );
50 #if TEST_STD_VER > 11
51 {
52 constexpr const wchar_t *s = L"QBCDE";
53 constexpr std::basic_string_view<wchar_t> sv1 ( s, 2 );
54 static_assert ( sv1.size() == 2, "" );
55 static_assert ( sv1.data() == s, "" );
56 }
57 #endif
58
59 #if TEST_STD_VER >= 11
60 test ( u"QBCDE", 5 );
61 test ( u"QBCDE", 2 );
62 test ( u"", 0 );
63 #if TEST_STD_VER > 11
64 {
65 constexpr const char16_t *s = u"QBCDE";
66 constexpr std::basic_string_view<char16_t> sv1 ( s, 2 );
67 static_assert ( sv1.size() == 2, "" );
68 static_assert ( sv1.data() == s, "" );
69 }
70 #endif
71
72 test ( U"QBCDE", 5 );
73 test ( U"QBCDE", 2 );
74 test ( U"", 0 );
75 #if TEST_STD_VER > 11
76 {
77 constexpr const char32_t *s = U"QBCDE";
78 constexpr std::basic_string_view<char32_t> sv1 ( s, 2 );
79 static_assert ( sv1.size() == 2, "" );
80 static_assert ( sv1.data() == s, "" );
81 }
82 #endif
83 #endif
84
85 return 0;
86 }
87