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 // <regex>
11 
12 // template <class traits, class charT, class ST, class SA>
13 //     basic_string<charT, ST, SA>
14 //     regex_replace(const basic_string<charT, ST, SA>& s,
15 //                   const basic_regex<charT, traits>& e, const charT* fmt,
16 //                   regex_constants::match_flag_type flags =
17 //                                              regex_constants::match_default);
18 
19 #include <regex>
20 #include <cassert>
21 
main()22 int main()
23 {
24     {
25         std::regex phone_numbers("\\d{3}-\\d{4}");
26         std::string phone_book("555-1234, 555-2345, 555-3456");
27         std::string r = std::regex_replace(phone_book, phone_numbers,
28                                            "123-$&");
29         assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
30     }
31     {
32         std::regex phone_numbers("\\d{3}-\\d{4}");
33         std::string phone_book("555-1234, 555-2345, 555-3456");
34         std::string r = std::regex_replace(phone_book, phone_numbers,
35                                            "123-$&",
36                                            std::regex_constants::format_sed);
37         assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
38     }
39     {
40         std::regex phone_numbers("\\d{3}-\\d{4}");
41         std::string phone_book("555-1234, 555-2345, 555-3456");
42         std::string r = std::regex_replace(phone_book, phone_numbers,
43                                            "123-&",
44                                            std::regex_constants::format_sed);
45         assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
46     }
47     {
48         std::regex phone_numbers("\\d{3}-\\d{4}");
49         std::string phone_book("555-1234, 555-2345, 555-3456");
50         std::string r = std::regex_replace(phone_book, phone_numbers,
51                                            "123-$&",
52                                            std::regex_constants::format_no_copy);
53         assert(r == "123-555-1234123-555-2345123-555-3456");
54     }
55     {
56         std::regex phone_numbers("\\d{3}-\\d{4}");
57         std::string phone_book("555-1234, 555-2345, 555-3456");
58         std::string r = std::regex_replace(phone_book, phone_numbers,
59                                            "123-$&",
60                                            std::regex_constants::format_first_only);
61         assert(r == "123-555-1234, 555-2345, 555-3456");
62     }
63     {
64         std::regex phone_numbers("\\d{3}-\\d{4}");
65         std::string phone_book("555-1234, 555-2345, 555-3456");
66         std::string r = std::regex_replace(phone_book, phone_numbers,
67                                            "123-$&",
68                                            std::regex_constants::format_first_only |
69                                            std::regex_constants::format_no_copy);
70         assert(r == "123-555-1234");
71     }
72 }
73