libcxx/test/std/re/re.submatch/re.submatch.op/stream.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 // template <class charT, class ST, class BiIter>
  14 //     basic_ostream<charT, ST>&
  15 //     operator<<(basic_ostream<charT, ST>& os, const sub_match<BiIter>& m);
  16
  17 #include <regex>
  18 #include <sstream>
  19 #include <cassert>
  20 #include "test_macros.h"
  21
  22 template <class CharT>
  23 void
  24 test(const std::basic_string<CharT>& s)
  25 {
  26     typedef std::basic_string<CharT> string;
  27     typedef std::sub_match<typename string::const_iterator> SM;
  28     typedef std::basic_ostringstream<CharT> ostringstream;
  29     SM sm;
  30     sm.first = s.begin();
  31     sm.second = s.end();
  32     sm.matched = true;
  33     ostringstream os;
  34     os << sm;
  35     assert(os.str() == s);
  36 }
  37
  38 int main(int, char**)
  39 {
  40     test(std::string("123"));
  41 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  42     test(std::wstring(L"123"));
  43 #endif
  44
  45   return 0;
  46 }