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(const charT* s, 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,const typename S::value_type * str,typename S::size_type pos,typename S::size_type x)21 test(const S& s, const typename S::value_type* str, typename S::size_type pos,
22      typename S::size_type x)
23 {
24     assert(s.rfind(str, pos) == x);
25     if (x != S::npos)
26     {
27         typename S::size_type n = S::traits_type::length(str);
28         assert(x <= pos && x + n <= s.size());
29     }
30 }
31 
32 template <class S>
33 void
test(const S & s,const typename S::value_type * str,typename S::size_type x)34 test(const S& s, const typename S::value_type* str, typename S::size_type x)
35 {
36     assert(s.rfind(str) == x);
37     if (x != S::npos)
38     {
39         typename S::size_type pos = s.size();
40         typename S::size_type n = S::traits_type::length(str);
41         assert(x <= pos && x + n <= s.size());
42     }
43 }
44 
45 template <class S>
test0()46 void test0()
47 {
48     test(S(""), "", 0, 0);
49     test(S(""), "abcde", 0, S::npos);
50     test(S(""), "abcdeabcde", 0, S::npos);
51     test(S(""), "abcdeabcdeabcdeabcde", 0, S::npos);
52     test(S(""), "", 1, 0);
53     test(S(""), "abcde", 1, S::npos);
54     test(S(""), "abcdeabcde", 1, S::npos);
55     test(S(""), "abcdeabcdeabcdeabcde", 1, S::npos);
56     test(S("abcde"), "", 0, 0);
57     test(S("abcde"), "abcde", 0, 0);
58     test(S("abcde"), "abcdeabcde", 0, S::npos);
59     test(S("abcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
60     test(S("abcde"), "", 1, 1);
61     test(S("abcde"), "abcde", 1, 0);
62     test(S("abcde"), "abcdeabcde", 1, S::npos);
63     test(S("abcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
64     test(S("abcde"), "", 2, 2);
65     test(S("abcde"), "abcde", 2, 0);
66     test(S("abcde"), "abcdeabcde", 2, S::npos);
67     test(S("abcde"), "abcdeabcdeabcdeabcde", 2, S::npos);
68     test(S("abcde"), "", 4, 4);
69     test(S("abcde"), "abcde", 4, 0);
70     test(S("abcde"), "abcdeabcde", 4, S::npos);
71     test(S("abcde"), "abcdeabcdeabcdeabcde", 4, S::npos);
72     test(S("abcde"), "", 5, 5);
73     test(S("abcde"), "abcde", 5, 0);
74     test(S("abcde"), "abcdeabcde", 5, S::npos);
75     test(S("abcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
76     test(S("abcde"), "", 6, 5);
77     test(S("abcde"), "abcde", 6, 0);
78     test(S("abcde"), "abcdeabcde", 6, S::npos);
79     test(S("abcde"), "abcdeabcdeabcdeabcde", 6, S::npos);
80     test(S("abcdeabcde"), "", 0, 0);
81     test(S("abcdeabcde"), "abcde", 0, 0);
82     test(S("abcdeabcde"), "abcdeabcde", 0, 0);
83     test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
84     test(S("abcdeabcde"), "", 1, 1);
85     test(S("abcdeabcde"), "abcde", 1, 0);
86     test(S("abcdeabcde"), "abcdeabcde", 1, 0);
87     test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
88     test(S("abcdeabcde"), "", 5, 5);
89     test(S("abcdeabcde"), "abcde", 5, 5);
90     test(S("abcdeabcde"), "abcdeabcde", 5, 0);
91     test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
92     test(S("abcdeabcde"), "", 9, 9);
93     test(S("abcdeabcde"), "abcde", 9, 5);
94     test(S("abcdeabcde"), "abcdeabcde", 9, 0);
95     test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, S::npos);
96     test(S("abcdeabcde"), "", 10, 10);
97     test(S("abcdeabcde"), "abcde", 10, 5);
98     test(S("abcdeabcde"), "abcdeabcde", 10, 0);
99     test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
100     test(S("abcdeabcde"), "", 11, 10);
101     test(S("abcdeabcde"), "abcde", 11, 5);
102     test(S("abcdeabcde"), "abcdeabcde", 11, 0);
103     test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, S::npos);
104     test(S("abcdeabcdeabcdeabcde"), "", 0, 0);
105     test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0);
106     test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0);
107     test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0);
108     test(S("abcdeabcdeabcdeabcde"), "", 1, 1);
109     test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0);
110     test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0);
111     test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0);
112     test(S("abcdeabcdeabcdeabcde"), "", 10, 10);
113     test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 10);
114     test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10);
115     test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0);
116     test(S("abcdeabcdeabcdeabcde"), "", 19, 19);
117     test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 15);
118     test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10);
119     test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0);
120     test(S("abcdeabcdeabcdeabcde"), "", 20, 20);
121     test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 15);
122     test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10);
123     test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0);
124     test(S("abcdeabcdeabcdeabcde"), "", 21, 20);
125     test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 15);
126     test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10);
127     test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0);
128 }
129 
130 template <class S>
test1()131 void test1()
132 {
133     test(S(""), "", 0);
134     test(S(""), "abcde", S::npos);
135     test(S(""), "abcdeabcde", S::npos);
136     test(S(""), "abcdeabcdeabcdeabcde", S::npos);
137     test(S("abcde"), "", 5);
138     test(S("abcde"), "abcde", 0);
139     test(S("abcde"), "abcdeabcde", S::npos);
140     test(S("abcde"), "abcdeabcdeabcdeabcde", S::npos);
141     test(S("abcdeabcde"), "", 10);
142     test(S("abcdeabcde"), "abcde", 5);
143     test(S("abcdeabcde"), "abcdeabcde", 0);
144     test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", S::npos);
145     test(S("abcdeabcdeabcdeabcde"), "", 20);
146     test(S("abcdeabcdeabcdeabcde"), "abcde", 15);
147     test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10);
148     test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0);
149 }
150 
main()151 int main()
152 {
153     {
154     typedef std::string S;
155     test0<S>();
156     test1<S>();
157     }
158 #if __cplusplus >= 201103L
159     {
160     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
161     test0<S>();
162     test1<S>();
163     }
164 #endif
165 }
166