1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 // constexpr size_type rfind(const basic_string& str, size_type pos = npos) const;
14 #include <experimental/string_view>
17 #include "constexpr_char_traits.hpp"
21 test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
23 assert(s.rfind(str, pos) == x);
25 assert(x <= pos && x + str.size() <= s.size());
30 test(const S& s, const S& str, typename S::size_type x)
32 assert(s.rfind(str) == x);
34 assert(0 <= x && x + str.size() <= s.size());
40 test(S(""), S(""), 0, 0);
41 test(S(""), S("abcde"), 0, S::npos);
42 test(S(""), S("abcdeabcde"), 0, S::npos);
43 test(S(""), S("abcdeabcdeabcdeabcde"), 0, S::npos);
44 test(S(""), S(""), 1, 0);
45 test(S(""), S("abcde"), 1, S::npos);
46 test(S(""), S("abcdeabcde"), 1, S::npos);
47 test(S(""), S("abcdeabcdeabcdeabcde"), 1, S::npos);
48 test(S("abcde"), S(""), 0, 0);
49 test(S("abcde"), S("abcde"), 0, 0);
50 test(S("abcde"), S("abcdeabcde"), 0, S::npos);
51 test(S("abcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
52 test(S("abcde"), S(""), 1, 1);
53 test(S("abcde"), S("abcde"), 1, 0);
54 test(S("abcde"), S("abcdeabcde"), 1, S::npos);
55 test(S("abcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
56 test(S("abcde"), S(""), 2, 2);
57 test(S("abcde"), S("abcde"), 2, 0);
58 test(S("abcde"), S("abcdeabcde"), 2, S::npos);
59 test(S("abcde"), S("abcdeabcdeabcdeabcde"), 2, S::npos);
60 test(S("abcde"), S(""), 4, 4);
61 test(S("abcde"), S("abcde"), 4, 0);
62 test(S("abcde"), S("abcdeabcde"), 4, S::npos);
63 test(S("abcde"), S("abcdeabcdeabcdeabcde"), 4, S::npos);
64 test(S("abcde"), S(""), 5, 5);
65 test(S("abcde"), S("abcde"), 5, 0);
66 test(S("abcde"), S("abcdeabcde"), 5, S::npos);
67 test(S("abcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
68 test(S("abcde"), S(""), 6, 5);
69 test(S("abcde"), S("abcde"), 6, 0);
70 test(S("abcde"), S("abcdeabcde"), 6, S::npos);
71 test(S("abcde"), S("abcdeabcdeabcdeabcde"), 6, S::npos);
72 test(S("abcdeabcde"), S(""), 0, 0);
73 test(S("abcdeabcde"), S("abcde"), 0, 0);
74 test(S("abcdeabcde"), S("abcdeabcde"), 0, 0);
75 test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
76 test(S("abcdeabcde"), S(""), 1, 1);
77 test(S("abcdeabcde"), S("abcde"), 1, 0);
78 test(S("abcdeabcde"), S("abcdeabcde"), 1, 0);
79 test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
80 test(S("abcdeabcde"), S(""), 5, 5);
81 test(S("abcdeabcde"), S("abcde"), 5, 5);
82 test(S("abcdeabcde"), S("abcdeabcde"), 5, 0);
83 test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
84 test(S("abcdeabcde"), S(""), 9, 9);
85 test(S("abcdeabcde"), S("abcde"), 9, 5);
86 test(S("abcdeabcde"), S("abcdeabcde"), 9, 0);
87 test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 9, S::npos);
88 test(S("abcdeabcde"), S(""), 10, 10);
89 test(S("abcdeabcde"), S("abcde"), 10, 5);
90 test(S("abcdeabcde"), S("abcdeabcde"), 10, 0);
91 test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
92 test(S("abcdeabcde"), S(""), 11, 10);
93 test(S("abcdeabcde"), S("abcde"), 11, 5);
94 test(S("abcdeabcde"), S("abcdeabcde"), 11, 0);
95 test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 11, S::npos);
96 test(S("abcdeabcdeabcdeabcde"), S(""), 0, 0);
97 test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0, 0);
98 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0, 0);
99 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, 0);
100 test(S("abcdeabcdeabcdeabcde"), S(""), 1, 1);
101 test(S("abcdeabcdeabcdeabcde"), S("abcde"), 1, 0);
102 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 1, 0);
103 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, 0);
104 test(S("abcdeabcdeabcdeabcde"), S(""), 10, 10);
105 test(S("abcdeabcdeabcdeabcde"), S("abcde"), 10, 10);
106 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10, 10);
107 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, 0);
108 test(S("abcdeabcdeabcdeabcde"), S(""), 19, 19);
109 test(S("abcdeabcdeabcdeabcde"), S("abcde"), 19, 15);
110 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 19, 10);
111 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 19, 0);
112 test(S("abcdeabcdeabcdeabcde"), S(""), 20, 20);
113 test(S("abcdeabcdeabcdeabcde"), S("abcde"), 20, 15);
114 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 20, 10);
115 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 20, 0);
116 test(S("abcdeabcdeabcdeabcde"), S(""), 21, 20);
117 test(S("abcdeabcdeabcdeabcde"), S("abcde"), 21, 15);
118 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 21, 10);
119 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 21, 0);
125 test(S(""), S(""), 0);
126 test(S(""), S("abcde"), S::npos);
127 test(S(""), S("abcdeabcde"), S::npos);
128 test(S(""), S("abcdeabcdeabcdeabcde"), S::npos);
129 test(S("abcde"), S(""), 5);
130 test(S("abcde"), S("abcde"), 0);
131 test(S("abcde"), S("abcdeabcde"), S::npos);
132 test(S("abcde"), S("abcdeabcdeabcdeabcde"), S::npos);
133 test(S("abcdeabcde"), S(""), 10);
134 test(S("abcdeabcde"), S("abcde"), 5);
135 test(S("abcdeabcde"), S("abcdeabcde"), 0);
136 test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), S::npos);
137 test(S("abcdeabcdeabcdeabcde"), S(""), 20);
138 test(S("abcdeabcdeabcdeabcde"), S("abcde"), 15);
139 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10);
140 test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0);
146 typedef std::experimental::string_view S;
151 #if _LIBCPP_STD_VER > 11
153 typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
155 constexpr SV sv2 { "abcde", 5 };
157 static_assert (sv1.rfind(sv1) == 0, "" );
158 static_assert (sv1.rfind(sv2) == SV::npos, "" );
159 static_assert (sv2.rfind(sv1) == 5, "" );
160 static_assert (sv2.rfind(sv2) == 0, "" );
161 static_assert (sv2.rfind(sv2, 1) == 0, "" );