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
main()23 int 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