libcxx/test/std/re/re.regex/re.regex.construct/iter_iter.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 // template <class ForwardIterator>
  14 //    basic_regex(ForwardIterator first, ForwardIterator last);
  15
  16 #include <regex>
  17 #include <cassert>
  18
  19 #include "test_iterators.h"
  20 #include "test_macros.h"
  21
  22 template <class Iter>
  23 void
  24 test(Iter first, Iter last, unsigned mc)
  25 {
  26     std::basic_regex<typename std::iterator_traits<Iter>::value_type> r(first, last);
  27     assert(r.flags() == std::regex_constants::ECMAScript);
  28     assert(r.mark_count() == mc);
  29 }
  30
  31 int main(int, char**)
  32 {
  33     typedef forward_iterator<std::string::const_iterator> F;
  34     std::string s1("\\(a\\)");
  35     std::string s2("\\(a[bc]\\)");
  36     std::string s3("\\(a\\([bc]\\)\\)");
  37     std::string s4("(a([bc]))");
  38
  39     test(F(s1.begin()), F(s1.end()), 0);
  40     test(F(s2.begin()), F(s2.end()), 0);
  41     test(F(s3.begin()), F(s3.end()), 0);
  42     test(F(s4.begin()), F(s4.end()), 2);
  43
  44   return 0;
  45 }