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
22int 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