libcxx/test/std/re/re.alg/re.alg.replace/test4.pass.cpp

   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 // <regex>
  10
  11 // template <class traits, class charT, class ST, class SA>
  12 //     basic_string<charT, ST, SA>
  13 //     regex_replace(const basic_string<charT, ST, SA>& s,
  14 //                   const basic_regex<charT, traits>& e, const charT* fmt,
  15 //                   regex_constants::match_flag_type flags =
  16 //                                              regex_constants::match_default);
  17
  18 #include <regex>
  19 #include <cassert>
  20 #include "test_macros.h"
  21
  22 int main(int, char**)
  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   return 0;
  74 }