1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <string>
10 
11 // basic_string<charT,traits,Allocator>&
12 //   replace(const_iterator i1, const_iterator i2, const charT* s); // constexpr since C++20
13 
14 #include <stdio.h>
15 
16 #include <string>
17 #include <algorithm>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 #include "min_allocator.h"
22 
23 template <class S>
24 TEST_CONSTEXPR_CXX20 void
test(S s,typename S::size_type pos1,typename S::size_type n1,const typename S::value_type * str,S expected)25 test(S s, typename S::size_type pos1, typename S::size_type n1, const typename S::value_type* str, S expected)
26 {
27     typename S::size_type old_size = s.size();
28     typename S::const_iterator first = s.begin() + pos1;
29     typename S::const_iterator last = s.begin() + pos1 + n1;
30     typename S::size_type xlen = last - first;
31     s.replace(first, last, str);
32     LIBCPP_ASSERT(s.__invariants());
33     assert(s == expected);
34     typename S::size_type rlen = S::traits_type::length(str);
35     assert(s.size() == old_size - xlen + rlen);
36 }
37 
38 template <class S>
test0()39 TEST_CONSTEXPR_CXX20 bool test0()
40 {
41     test(S(""), 0, 0, "", S(""));
42     test(S(""), 0, 0, "12345", S("12345"));
43     test(S(""), 0, 0, "1234567890", S("1234567890"));
44     test(S(""), 0, 0, "12345678901234567890", S("12345678901234567890"));
45     test(S("abcde"), 0, 0, "", S("abcde"));
46     test(S("abcde"), 0, 0, "12345", S("12345abcde"));
47     test(S("abcde"), 0, 0, "1234567890", S("1234567890abcde"));
48     test(S("abcde"), 0, 0, "12345678901234567890", S("12345678901234567890abcde"));
49     test(S("abcde"), 0, 1, "", S("bcde"));
50     test(S("abcde"), 0, 1, "12345", S("12345bcde"));
51     test(S("abcde"), 0, 1, "1234567890", S("1234567890bcde"));
52     test(S("abcde"), 0, 1, "12345678901234567890", S("12345678901234567890bcde"));
53     test(S("abcde"), 0, 2, "", S("cde"));
54     test(S("abcde"), 0, 2, "12345", S("12345cde"));
55     test(S("abcde"), 0, 2, "1234567890", S("1234567890cde"));
56     test(S("abcde"), 0, 2, "12345678901234567890", S("12345678901234567890cde"));
57     test(S("abcde"), 0, 4, "", S("e"));
58     test(S("abcde"), 0, 4, "12345", S("12345e"));
59     test(S("abcde"), 0, 4, "1234567890", S("1234567890e"));
60     test(S("abcde"), 0, 4, "12345678901234567890", S("12345678901234567890e"));
61     test(S("abcde"), 0, 5, "", S(""));
62     test(S("abcde"), 0, 5, "12345", S("12345"));
63     test(S("abcde"), 0, 5, "1234567890", S("1234567890"));
64     test(S("abcde"), 0, 5, "12345678901234567890", S("12345678901234567890"));
65     test(S("abcde"), 1, 0, "", S("abcde"));
66     test(S("abcde"), 1, 0, "12345", S("a12345bcde"));
67     test(S("abcde"), 1, 0, "1234567890", S("a1234567890bcde"));
68     test(S("abcde"), 1, 0, "12345678901234567890", S("a12345678901234567890bcde"));
69     test(S("abcde"), 1, 1, "", S("acde"));
70     test(S("abcde"), 1, 1, "12345", S("a12345cde"));
71     test(S("abcde"), 1, 1, "1234567890", S("a1234567890cde"));
72     test(S("abcde"), 1, 1, "12345678901234567890", S("a12345678901234567890cde"));
73     test(S("abcde"), 1, 2, "", S("ade"));
74     test(S("abcde"), 1, 2, "12345", S("a12345de"));
75     test(S("abcde"), 1, 2, "1234567890", S("a1234567890de"));
76     test(S("abcde"), 1, 2, "12345678901234567890", S("a12345678901234567890de"));
77     test(S("abcde"), 1, 3, "", S("ae"));
78     test(S("abcde"), 1, 3, "12345", S("a12345e"));
79     test(S("abcde"), 1, 3, "1234567890", S("a1234567890e"));
80     test(S("abcde"), 1, 3, "12345678901234567890", S("a12345678901234567890e"));
81     test(S("abcde"), 1, 4, "", S("a"));
82     test(S("abcde"), 1, 4, "12345", S("a12345"));
83     test(S("abcde"), 1, 4, "1234567890", S("a1234567890"));
84     test(S("abcde"), 1, 4, "12345678901234567890", S("a12345678901234567890"));
85     test(S("abcde"), 2, 0, "", S("abcde"));
86     test(S("abcde"), 2, 0, "12345", S("ab12345cde"));
87     test(S("abcde"), 2, 0, "1234567890", S("ab1234567890cde"));
88     test(S("abcde"), 2, 0, "12345678901234567890", S("ab12345678901234567890cde"));
89     test(S("abcde"), 2, 1, "", S("abde"));
90     test(S("abcde"), 2, 1, "12345", S("ab12345de"));
91     test(S("abcde"), 2, 1, "1234567890", S("ab1234567890de"));
92     test(S("abcde"), 2, 1, "12345678901234567890", S("ab12345678901234567890de"));
93     test(S("abcde"), 2, 2, "", S("abe"));
94     test(S("abcde"), 2, 2, "12345", S("ab12345e"));
95     test(S("abcde"), 2, 2, "1234567890", S("ab1234567890e"));
96     test(S("abcde"), 2, 2, "12345678901234567890", S("ab12345678901234567890e"));
97     test(S("abcde"), 2, 3, "", S("ab"));
98     test(S("abcde"), 2, 3, "12345", S("ab12345"));
99     test(S("abcde"), 2, 3, "1234567890", S("ab1234567890"));
100     test(S("abcde"), 2, 3, "12345678901234567890", S("ab12345678901234567890"));
101     test(S("abcde"), 4, 0, "", S("abcde"));
102     test(S("abcde"), 4, 0, "12345", S("abcd12345e"));
103     test(S("abcde"), 4, 0, "1234567890", S("abcd1234567890e"));
104     test(S("abcde"), 4, 0, "12345678901234567890", S("abcd12345678901234567890e"));
105     test(S("abcde"), 4, 1, "", S("abcd"));
106     test(S("abcde"), 4, 1, "12345", S("abcd12345"));
107     test(S("abcde"), 4, 1, "1234567890", S("abcd1234567890"));
108     test(S("abcde"), 4, 1, "12345678901234567890", S("abcd12345678901234567890"));
109     test(S("abcde"), 5, 0, "", S("abcde"));
110     test(S("abcde"), 5, 0, "12345", S("abcde12345"));
111     test(S("abcde"), 5, 0, "1234567890", S("abcde1234567890"));
112     test(S("abcde"), 5, 0, "12345678901234567890", S("abcde12345678901234567890"));
113     test(S("abcdefghij"), 0, 0, "", S("abcdefghij"));
114     test(S("abcdefghij"), 0, 0, "12345", S("12345abcdefghij"));
115     test(S("abcdefghij"), 0, 0, "1234567890", S("1234567890abcdefghij"));
116     test(S("abcdefghij"), 0, 0, "12345678901234567890", S("12345678901234567890abcdefghij"));
117     test(S("abcdefghij"), 0, 1, "", S("bcdefghij"));
118     test(S("abcdefghij"), 0, 1, "12345", S("12345bcdefghij"));
119     test(S("abcdefghij"), 0, 1, "1234567890", S("1234567890bcdefghij"));
120     test(S("abcdefghij"), 0, 1, "12345678901234567890", S("12345678901234567890bcdefghij"));
121     test(S("abcdefghij"), 0, 5, "", S("fghij"));
122     test(S("abcdefghij"), 0, 5, "12345", S("12345fghij"));
123     test(S("abcdefghij"), 0, 5, "1234567890", S("1234567890fghij"));
124     test(S("abcdefghij"), 0, 5, "12345678901234567890", S("12345678901234567890fghij"));
125     test(S("abcdefghij"), 0, 9, "", S("j"));
126     test(S("abcdefghij"), 0, 9, "12345", S("12345j"));
127     test(S("abcdefghij"), 0, 9, "1234567890", S("1234567890j"));
128     test(S("abcdefghij"), 0, 9, "12345678901234567890", S("12345678901234567890j"));
129     test(S("abcdefghij"), 0, 10, "", S(""));
130     test(S("abcdefghij"), 0, 10, "12345", S("12345"));
131     test(S("abcdefghij"), 0, 10, "1234567890", S("1234567890"));
132     test(S("abcdefghij"), 0, 10, "12345678901234567890", S("12345678901234567890"));
133     test(S("abcdefghij"), 1, 0, "", S("abcdefghij"));
134     test(S("abcdefghij"), 1, 0, "12345", S("a12345bcdefghij"));
135     test(S("abcdefghij"), 1, 0, "1234567890", S("a1234567890bcdefghij"));
136     test(S("abcdefghij"), 1, 0, "12345678901234567890", S("a12345678901234567890bcdefghij"));
137     test(S("abcdefghij"), 1, 1, "", S("acdefghij"));
138     test(S("abcdefghij"), 1, 1, "12345", S("a12345cdefghij"));
139     test(S("abcdefghij"), 1, 1, "1234567890", S("a1234567890cdefghij"));
140     test(S("abcdefghij"), 1, 1, "12345678901234567890", S("a12345678901234567890cdefghij"));
141 
142     return true;
143 }
144 
145 template <class S>
test1()146 TEST_CONSTEXPR_CXX20 bool test1()
147 {
148     test(S("abcdefghij"), 1, 4, "", S("afghij"));
149     test(S("abcdefghij"), 1, 4, "12345", S("a12345fghij"));
150     test(S("abcdefghij"), 1, 4, "1234567890", S("a1234567890fghij"));
151     test(S("abcdefghij"), 1, 4, "12345678901234567890", S("a12345678901234567890fghij"));
152     test(S("abcdefghij"), 1, 8, "", S("aj"));
153     test(S("abcdefghij"), 1, 8, "12345", S("a12345j"));
154     test(S("abcdefghij"), 1, 8, "1234567890", S("a1234567890j"));
155     test(S("abcdefghij"), 1, 8, "12345678901234567890", S("a12345678901234567890j"));
156     test(S("abcdefghij"), 1, 9, "", S("a"));
157     test(S("abcdefghij"), 1, 9, "12345", S("a12345"));
158     test(S("abcdefghij"), 1, 9, "1234567890", S("a1234567890"));
159     test(S("abcdefghij"), 1, 9, "12345678901234567890", S("a12345678901234567890"));
160     test(S("abcdefghij"), 5, 0, "", S("abcdefghij"));
161     test(S("abcdefghij"), 5, 0, "12345", S("abcde12345fghij"));
162     test(S("abcdefghij"), 5, 0, "1234567890", S("abcde1234567890fghij"));
163     test(S("abcdefghij"), 5, 0, "12345678901234567890", S("abcde12345678901234567890fghij"));
164     test(S("abcdefghij"), 5, 1, "", S("abcdeghij"));
165     test(S("abcdefghij"), 5, 1, "12345", S("abcde12345ghij"));
166     test(S("abcdefghij"), 5, 1, "1234567890", S("abcde1234567890ghij"));
167     test(S("abcdefghij"), 5, 1, "12345678901234567890", S("abcde12345678901234567890ghij"));
168     test(S("abcdefghij"), 5, 2, "", S("abcdehij"));
169     test(S("abcdefghij"), 5, 2, "12345", S("abcde12345hij"));
170     test(S("abcdefghij"), 5, 2, "1234567890", S("abcde1234567890hij"));
171     test(S("abcdefghij"), 5, 2, "12345678901234567890", S("abcde12345678901234567890hij"));
172     test(S("abcdefghij"), 5, 4, "", S("abcdej"));
173     test(S("abcdefghij"), 5, 4, "12345", S("abcde12345j"));
174     test(S("abcdefghij"), 5, 4, "1234567890", S("abcde1234567890j"));
175     test(S("abcdefghij"), 5, 4, "12345678901234567890", S("abcde12345678901234567890j"));
176     test(S("abcdefghij"), 5, 5, "", S("abcde"));
177     test(S("abcdefghij"), 5, 5, "12345", S("abcde12345"));
178     test(S("abcdefghij"), 5, 5, "1234567890", S("abcde1234567890"));
179     test(S("abcdefghij"), 5, 5, "12345678901234567890", S("abcde12345678901234567890"));
180     test(S("abcdefghij"), 9, 0, "", S("abcdefghij"));
181     test(S("abcdefghij"), 9, 0, "12345", S("abcdefghi12345j"));
182     test(S("abcdefghij"), 9, 0, "1234567890", S("abcdefghi1234567890j"));
183     test(S("abcdefghij"), 9, 0, "12345678901234567890", S("abcdefghi12345678901234567890j"));
184     test(S("abcdefghij"), 9, 1, "", S("abcdefghi"));
185     test(S("abcdefghij"), 9, 1, "12345", S("abcdefghi12345"));
186     test(S("abcdefghij"), 9, 1, "1234567890", S("abcdefghi1234567890"));
187     test(S("abcdefghij"), 9, 1, "12345678901234567890", S("abcdefghi12345678901234567890"));
188     test(S("abcdefghij"), 10, 0, "", S("abcdefghij"));
189     test(S("abcdefghij"), 10, 0, "12345", S("abcdefghij12345"));
190     test(S("abcdefghij"), 10, 0, "1234567890", S("abcdefghij1234567890"));
191     test(S("abcdefghij"), 10, 0, "12345678901234567890", S("abcdefghij12345678901234567890"));
192     test(S("abcdefghijklmnopqrst"), 0, 0, "", S("abcdefghijklmnopqrst"));
193     test(S("abcdefghijklmnopqrst"), 0, 0, "12345", S("12345abcdefghijklmnopqrst"));
194     test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", S("1234567890abcdefghijklmnopqrst"));
195     test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", S("12345678901234567890abcdefghijklmnopqrst"));
196     test(S("abcdefghijklmnopqrst"), 0, 1, "", S("bcdefghijklmnopqrst"));
197     test(S("abcdefghijklmnopqrst"), 0, 1, "12345", S("12345bcdefghijklmnopqrst"));
198     test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", S("1234567890bcdefghijklmnopqrst"));
199     test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", S("12345678901234567890bcdefghijklmnopqrst"));
200     test(S("abcdefghijklmnopqrst"), 0, 10, "", S("klmnopqrst"));
201     test(S("abcdefghijklmnopqrst"), 0, 10, "12345", S("12345klmnopqrst"));
202     test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", S("1234567890klmnopqrst"));
203     test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", S("12345678901234567890klmnopqrst"));
204     test(S("abcdefghijklmnopqrst"), 0, 19, "", S("t"));
205     test(S("abcdefghijklmnopqrst"), 0, 19, "12345", S("12345t"));
206     test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", S("1234567890t"));
207     test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", S("12345678901234567890t"));
208     test(S("abcdefghijklmnopqrst"), 0, 20, "", S(""));
209     test(S("abcdefghijklmnopqrst"), 0, 20, "12345", S("12345"));
210     test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", S("1234567890"));
211     test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", S("12345678901234567890"));
212     test(S("abcdefghijklmnopqrst"), 1, 0, "", S("abcdefghijklmnopqrst"));
213     test(S("abcdefghijklmnopqrst"), 1, 0, "12345", S("a12345bcdefghijklmnopqrst"));
214     test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", S("a1234567890bcdefghijklmnopqrst"));
215     test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", S("a12345678901234567890bcdefghijklmnopqrst"));
216     test(S("abcdefghijklmnopqrst"), 1, 1, "", S("acdefghijklmnopqrst"));
217     test(S("abcdefghijklmnopqrst"), 1, 1, "12345", S("a12345cdefghijklmnopqrst"));
218     test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", S("a1234567890cdefghijklmnopqrst"));
219     test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", S("a12345678901234567890cdefghijklmnopqrst"));
220     test(S("abcdefghijklmnopqrst"), 1, 9, "", S("aklmnopqrst"));
221     test(S("abcdefghijklmnopqrst"), 1, 9, "12345", S("a12345klmnopqrst"));
222     test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", S("a1234567890klmnopqrst"));
223     test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", S("a12345678901234567890klmnopqrst"));
224     test(S("abcdefghijklmnopqrst"), 1, 18, "", S("at"));
225     test(S("abcdefghijklmnopqrst"), 1, 18, "12345", S("a12345t"));
226     test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", S("a1234567890t"));
227     test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", S("a12345678901234567890t"));
228     test(S("abcdefghijklmnopqrst"), 1, 19, "", S("a"));
229     test(S("abcdefghijklmnopqrst"), 1, 19, "12345", S("a12345"));
230     test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", S("a1234567890"));
231     test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", S("a12345678901234567890"));
232     test(S("abcdefghijklmnopqrst"), 10, 0, "", S("abcdefghijklmnopqrst"));
233     test(S("abcdefghijklmnopqrst"), 10, 0, "12345", S("abcdefghij12345klmnopqrst"));
234     test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", S("abcdefghij1234567890klmnopqrst"));
235     test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", S("abcdefghij12345678901234567890klmnopqrst"));
236     test(S("abcdefghijklmnopqrst"), 10, 1, "", S("abcdefghijlmnopqrst"));
237     test(S("abcdefghijklmnopqrst"), 10, 1, "12345", S("abcdefghij12345lmnopqrst"));
238     test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", S("abcdefghij1234567890lmnopqrst"));
239     test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", S("abcdefghij12345678901234567890lmnopqrst"));
240     test(S("abcdefghijklmnopqrst"), 10, 5, "", S("abcdefghijpqrst"));
241     test(S("abcdefghijklmnopqrst"), 10, 5, "12345", S("abcdefghij12345pqrst"));
242     test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", S("abcdefghij1234567890pqrst"));
243     test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", S("abcdefghij12345678901234567890pqrst"));
244     test(S("abcdefghijklmnopqrst"), 10, 9, "", S("abcdefghijt"));
245     test(S("abcdefghijklmnopqrst"), 10, 9, "12345", S("abcdefghij12345t"));
246     test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", S("abcdefghij1234567890t"));
247     test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", S("abcdefghij12345678901234567890t"));
248 
249     return true;
250 }
251 
252 template <class S>
test2()253 TEST_CONSTEXPR_CXX20 bool test2()
254 {
255     test(S("abcdefghijklmnopqrst"), 10, 10, "", S("abcdefghij"));
256     test(S("abcdefghijklmnopqrst"), 10, 10, "12345", S("abcdefghij12345"));
257     test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", S("abcdefghij1234567890"));
258     test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", S("abcdefghij12345678901234567890"));
259     test(S("abcdefghijklmnopqrst"), 19, 0, "", S("abcdefghijklmnopqrst"));
260     test(S("abcdefghijklmnopqrst"), 19, 0, "12345", S("abcdefghijklmnopqrs12345t"));
261     test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", S("abcdefghijklmnopqrs1234567890t"));
262     test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890t"));
263     test(S("abcdefghijklmnopqrst"), 19, 1, "", S("abcdefghijklmnopqrs"));
264     test(S("abcdefghijklmnopqrst"), 19, 1, "12345", S("abcdefghijklmnopqrs12345"));
265     test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", S("abcdefghijklmnopqrs1234567890"));
266     test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890"));
267     test(S("abcdefghijklmnopqrst"), 20, 0, "", S("abcdefghijklmnopqrst"));
268     test(S("abcdefghijklmnopqrst"), 20, 0, "12345", S("abcdefghijklmnopqrst12345"));
269     test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", S("abcdefghijklmnopqrst1234567890"));
270     test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", S("abcdefghijklmnopqrst12345678901234567890"));
271 
272     { // test replacing into self
273       S s_short = "123/";
274       S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
275 
276       s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
277       assert(s_short == "123/123/");
278       s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
279       assert(s_short == "123/123/123/123/");
280       s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
281       assert(s_short == "123/123/123/123/123/123/123/123/");
282 
283       s_long.replace(s_long.begin(), s_long.begin(), s_long.c_str());
284       assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
285     }
286 
287     return true;
288 }
289 
test()290 TEST_CONSTEXPR_CXX20 void test() {
291   {
292     typedef std::string S;
293     test0<S>();
294     test1<S>();
295     test2<S>();
296 #if TEST_STD_VER > 17
297     static_assert(test0<S>());
298     static_assert(test1<S>());
299     static_assert(test2<S>());
300 #endif
301   }
302 #if TEST_STD_VER >= 11
303   {
304     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
305     test0<S>();
306     test1<S>();
307     test2<S>();
308 #if TEST_STD_VER > 17
309     static_assert(test0<S>());
310     static_assert(test1<S>());
311     static_assert(test2<S>());
312 #endif
313   }
314 #endif
315 }
316 
main(int,char **)317 int main(int, char**)
318 {
319   test();
320 
321   return 0;
322 }
323