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 // <string>
11
12 // size_type rfind(charT c, size_type pos = npos) const;
13
14 #include <string>
15 #include <cassert>
16
17 #include "min_allocator.h"
18
19 template <class S>
20 void
test(const S & s,typename S::value_type c,typename S::size_type pos,typename S::size_type x)21 test(const S& s, typename S::value_type c, typename S::size_type pos,
22 typename S::size_type x)
23 {
24 assert(s.rfind(c, pos) == x);
25 if (x != S::npos)
26 assert(x <= pos && x + 1 <= s.size());
27 }
28
29 template <class S>
30 void
test(const S & s,typename S::value_type c,typename S::size_type x)31 test(const S& s, typename S::value_type c, typename S::size_type x)
32 {
33 assert(s.rfind(c) == x);
34 if (x != S::npos)
35 assert(x + 1 <= s.size());
36 }
37
main()38 int main()
39 {
40 {
41 typedef std::string S;
42 test(S(""), 'b', 0, S::npos);
43 test(S(""), 'b', 1, S::npos);
44 test(S("abcde"), 'b', 0, S::npos);
45 test(S("abcde"), 'b', 1, 1);
46 test(S("abcde"), 'b', 2, 1);
47 test(S("abcde"), 'b', 4, 1);
48 test(S("abcde"), 'b', 5, 1);
49 test(S("abcde"), 'b', 6, 1);
50 test(S("abcdeabcde"), 'b', 0, S::npos);
51 test(S("abcdeabcde"), 'b', 1, 1);
52 test(S("abcdeabcde"), 'b', 5, 1);
53 test(S("abcdeabcde"), 'b', 9, 6);
54 test(S("abcdeabcde"), 'b', 10, 6);
55 test(S("abcdeabcde"), 'b', 11, 6);
56 test(S("abcdeabcdeabcdeabcde"), 'b', 0, S::npos);
57 test(S("abcdeabcdeabcdeabcde"), 'b', 1, 1);
58 test(S("abcdeabcdeabcdeabcde"), 'b', 10, 6);
59 test(S("abcdeabcdeabcdeabcde"), 'b', 19, 16);
60 test(S("abcdeabcdeabcdeabcde"), 'b', 20, 16);
61 test(S("abcdeabcdeabcdeabcde"), 'b', 21, 16);
62
63 test(S(""), 'b', S::npos);
64 test(S("abcde"), 'b', 1);
65 test(S("abcdeabcde"), 'b', 6);
66 test(S("abcdeabcdeabcdeabcde"), 'b', 16);
67 }
68 #if __cplusplus >= 201103L
69 {
70 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
71 test(S(""), 'b', 0, S::npos);
72 test(S(""), 'b', 1, S::npos);
73 test(S("abcde"), 'b', 0, S::npos);
74 test(S("abcde"), 'b', 1, 1);
75 test(S("abcde"), 'b', 2, 1);
76 test(S("abcde"), 'b', 4, 1);
77 test(S("abcde"), 'b', 5, 1);
78 test(S("abcde"), 'b', 6, 1);
79 test(S("abcdeabcde"), 'b', 0, S::npos);
80 test(S("abcdeabcde"), 'b', 1, 1);
81 test(S("abcdeabcde"), 'b', 5, 1);
82 test(S("abcdeabcde"), 'b', 9, 6);
83 test(S("abcdeabcde"), 'b', 10, 6);
84 test(S("abcdeabcde"), 'b', 11, 6);
85 test(S("abcdeabcdeabcdeabcde"), 'b', 0, S::npos);
86 test(S("abcdeabcdeabcdeabcde"), 'b', 1, 1);
87 test(S("abcdeabcdeabcdeabcde"), 'b', 10, 6);
88 test(S("abcdeabcdeabcdeabcde"), 'b', 19, 16);
89 test(S("abcdeabcdeabcdeabcde"), 'b', 20, 16);
90 test(S("abcdeabcdeabcdeabcde"), 'b', 21, 16);
91
92 test(S(""), 'b', S::npos);
93 test(S("abcde"), 'b', 1);
94 test(S("abcdeabcde"), 'b', 6);
95 test(S("abcdeabcdeabcdeabcde"), 'b', 16);
96 }
97 #endif
98 }
99