libcxx/test/std/re/re.regex/re.regex.swap/swap.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 charT, class traits = regex_traits<charT>> class basic_regex;
  12
  13 // void swap(basic_regex& e);
  14
  15 #include <regex>
  16 #include <cassert>
  17 #include "test_macros.h"
  18
  19 int main(int, char**)
  20 {
  21     std::regex r1("(a([bc]))");
  22     std::regex r2;
  23     r2.swap(r1);
  24     assert(r1.flags() == std::regex::ECMAScript);
  25     assert(r1.mark_count() == 0);
  26     assert(r2.flags() == std::regex::ECMAScript);
  27     assert(r2.mark_count() == 2);
  28
  29   return 0;
  30 }