1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10
11 // <string_view>
12
13 // constexpr basic_string_view(const _CharT* _s, size_type _len)
14 // : __data (_s), __size(_len) {}
15
16
17 #include <string_view>
18 #include <string>
19 #include <cassert>
20
21 #include "test_macros.h"
22
23 template<typename CharT>
test(const CharT * s,size_t sz)24 void test ( const CharT *s, size_t sz ) {
25 {
26 std::basic_string_view<CharT> sv1 ( s, sz );
27 assert ( sv1.size() == sz );
28 assert ( sv1.data() == s );
29 }
30 }
31
main()32 int main () {
33
34 test ( "QBCDE", 5 );
35 test ( "QBCDE", 2 );
36 test ( "", 0 );
37 #if TEST_STD_VER > 11
38 {
39 constexpr const char *s = "QBCDE";
40 constexpr std::basic_string_view<char> sv1 ( s, 2 );
41 static_assert ( sv1.size() == 2, "" );
42 static_assert ( sv1.data() == s, "" );
43 }
44 #endif
45
46 test ( L"QBCDE", 5 );
47 test ( L"QBCDE", 2 );
48 test ( L"", 0 );
49 #if TEST_STD_VER > 11
50 {
51 constexpr const wchar_t *s = L"QBCDE";
52 constexpr std::basic_string_view<wchar_t> sv1 ( s, 2 );
53 static_assert ( sv1.size() == 2, "" );
54 static_assert ( sv1.data() == s, "" );
55 }
56 #endif
57
58 #if TEST_STD_VER >= 11
59 test ( u"QBCDE", 5 );
60 test ( u"QBCDE", 2 );
61 test ( u"", 0 );
62 #if TEST_STD_VER > 11
63 {
64 constexpr const char16_t *s = u"QBCDE";
65 constexpr std::basic_string_view<char16_t> sv1 ( s, 2 );
66 static_assert ( sv1.size() == 2, "" );
67 static_assert ( sv1.data() == s, "" );
68 }
69 #endif
70
71 test ( U"QBCDE", 5 );
72 test ( U"QBCDE", 2 );
73 test ( U"", 0 );
74 #if TEST_STD_VER > 11
75 {
76 constexpr const char32_t *s = U"QBCDE";
77 constexpr std::basic_string_view<char32_t> sv1 ( s, 2 );
78 static_assert ( sv1.size() == 2, "" );
79 static_assert ( sv1.data() == s, "" );
80 }
81 #endif
82 #endif
83 }
84