libcxx/test/std/re/re.submatch/re.submatch.members/str.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 BidirectionalIterator> class sub_match;
  12
  13 // string_type str() const;
  14
  15 #include <regex>
  16 #include <cassert>
  17 #include "test_macros.h"
  18
  19 int main(int, char**)
  20 {
  21     {
  22         typedef char CharT;
  23         typedef std::sub_match<const CharT*> SM;
  24         SM sm = SM();
  25         SM::string_type str = sm.str();
  26         assert(str.empty());
  27         const CharT s[] = {'1', '2', '3', 0};
  28         sm.first = s;
  29         sm.second = s + 3;
  30         sm.matched = true;
  31         str = sm.str();
  32         assert(str == std::string("123"));
  33     }
  34 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  35     {
  36         typedef wchar_t CharT;
  37         typedef std::sub_match<const CharT*> SM;
  38         SM sm = SM();
  39         SM::string_type str = sm.str();
  40         assert(str.empty());
  41         const CharT s[] = {'1', '2', '3', 0};
  42         sm.first = s;
  43         sm.second = s + 3;
  44         sm.matched = true;
  45         str = sm.str();
  46         assert(str == std::wstring(L"123"));
  47     }
  48 #endif
  49
  50   return 0;
  51 }