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 // [string.view.capacity], capacity
14 // constexpr size_type size() const noexcept;
15 // constexpr size_type length() const noexcept;
16 // constexpr size_type max_size() const noexcept;
17 // constexpr bool empty() const noexcept;
18
19 #include <experimental/string_view>
20 #include <cassert>
21
22 #include "test_macros.h"
23
24 template<typename SV>
test1()25 void test1 () {
26 #if TEST_STD_VER > 11
27 {
28 constexpr SV sv1;
29 static_assert ( sv1.size() == 0, "" );
30 static_assert ( sv1.empty(), "");
31 static_assert ( sv1.size() == sv1.length(), "" );
32 static_assert ( sv1.max_size() > sv1.size(), "");
33 }
34 #endif
35
36 {
37 SV sv1;
38 assert ( sv1.size() == 0 );
39 assert ( sv1.empty());
40 assert ( sv1.size() == sv1.length());
41 assert ( sv1.max_size() > sv1.size());
42 }
43 }
44
45 template<typename CharT>
test2(const CharT * s,size_t len)46 void test2 ( const CharT *s, size_t len ) {
47 {
48 std::experimental::basic_string_view<CharT> sv1 ( s );
49 assert ( sv1.size() == len );
50 assert ( sv1.data() == s );
51 assert ( sv1.empty() == (len == 0));
52 assert ( sv1.size() == sv1.length());
53 assert ( sv1.max_size() > sv1.size());
54 }
55 }
56
main()57 int main () {
58 typedef std::experimental::string_view string_view;
59 typedef std::experimental::u16string_view u16string_view;
60 typedef std::experimental::u32string_view u32string_view;
61 typedef std::experimental::wstring_view wstring_view;
62
63 test1<string_view> ();
64 test1<u16string_view> ();
65 test1<u32string_view> ();
66 test1<wstring_view> ();
67
68 test2 ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
69 test2 ( "ABCDE", 5 );
70 test2 ( "a", 1 );
71 test2 ( "", 0 );
72
73 test2 ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
74 test2 ( L"ABCDE", 5 );
75 test2 ( L"a", 1 );
76 test2 ( L"", 0 );
77
78 #if TEST_STD_VER >= 11
79 test2 ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
80 test2 ( u"ABCDE", 5 );
81 test2 ( u"a", 1 );
82 test2 ( u"", 0 );
83
84 test2 ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
85 test2 ( U"ABCDE", 5 );
86 test2 ( U"a", 1 );
87 test2 ( U"", 0 );
88 #endif
89 }
90