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>
14//     regex_replace(const charT* s,
15//                   const basic_regex<charT, traits>& e,
16//                   const basic_string<charT, ST, SA>& fmt,
17//                   regex_constants::match_flag_type flags =
18//                                              regex_constants::match_default);
19
20#include <regex>
21#include <cassert>
22
23int main()
24{
25    {
26        std::regex phone_numbers("\\d{3}-\\d{4}");
27        const char phone_book[] = "555-1234, 555-2345, 555-3456";
28        std::string r = std::regex_replace(phone_book, phone_numbers,
29                                           std::string("123-$&"));
30        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
31    }
32    {
33        std::regex phone_numbers("\\d{3}-\\d{4}");
34        const char phone_book[] = "555-1234, 555-2345, 555-3456";
35        std::string r = std::regex_replace(phone_book, phone_numbers,
36                                           std::string("123-$&"),
37                                           std::regex_constants::format_sed);
38        assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
39    }
40    {
41        std::regex phone_numbers("\\d{3}-\\d{4}");
42        const char phone_book[] = "555-1234, 555-2345, 555-3456";
43        std::string r = std::regex_replace(phone_book, phone_numbers,
44                                           std::string("123-&"),
45                                           std::regex_constants::format_sed);
46        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
47    }
48    {
49        std::regex phone_numbers("\\d{3}-\\d{4}");
50        const char phone_book[] = "555-1234, 555-2345, 555-3456";
51        std::string r = std::regex_replace(phone_book, phone_numbers,
52                                           std::string("123-$&"),
53                                           std::regex_constants::format_no_copy);
54        assert(r == "123-555-1234123-555-2345123-555-3456");
55    }
56    {
57        std::regex phone_numbers("\\d{3}-\\d{4}");
58        const char phone_book[] = "555-1234, 555-2345, 555-3456";
59        std::string r = std::regex_replace(phone_book, phone_numbers,
60                                           std::string("123-$&"),
61                                           std::regex_constants::format_first_only);
62        assert(r == "123-555-1234, 555-2345, 555-3456");
63    }
64    {
65        std::regex phone_numbers("\\d{3}-\\d{4}");
66        const char phone_book[] = "555-1234, 555-2345, 555-3456";
67        std::string r = std::regex_replace(phone_book, phone_numbers,
68                                           std::string("123-$&"),
69                                           std::regex_constants::format_first_only |
70                                           std::regex_constants::format_no_copy);
71        assert(r == "123-555-1234");
72    }
73}
74