libcxx/test/std/re/re.regex/re.regex.construct/bad_repeat.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 // UNSUPPORTED: no-exceptions
  10 // <regex>
  11
  12 // template <class charT, class traits = regex_traits<charT>> class basic_regex;
  13
  14 // template <class ST, class SA>
  15 //    basic_regex(const basic_string<charT, ST, SA>& s);
  16
  17 #include <regex>
  18 #include <cassert>
  19 #include "test_macros.h"
  20
  21 static bool error_badrepeat_thrown(const char *pat)
  22 {
  23     bool result = false;
  24     try {
  25         std::regex re(pat);
  26     } catch (const std::regex_error &ex) {
  27         result = (ex.code() == std::regex_constants::error_badrepeat);
  28     }
  29     return result;
  30 }
  31
  32 int main(int, char**)
  33 {
  34     assert(error_badrepeat_thrown("?a"));
  35     assert(error_badrepeat_thrown("*a"));
  36     assert(error_badrepeat_thrown("+a"));
  37     assert(error_badrepeat_thrown("{a"));
  38
  39     assert(error_badrepeat_thrown("?(a+)"));
  40     assert(error_badrepeat_thrown("*(a+)"));
  41     assert(error_badrepeat_thrown("+(a+)"));
  42     assert(error_badrepeat_thrown("{(a+)"));
  43
  44   return 0;
  45 }