libcxx/test/std/experimental/memory/memory.resource.aliases/header_regex_synop.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: c++03
  10 // UNSUPPORTED: no-localization
  11
  12 // XFAIL: availability-aligned_allocation-missing
  13
  14 // <experimental/regex>
  15
  16 // namespace std { namespace experimental { namespace pmr {
  17 //
  18 //  template <class BidirectionalIterator>
  19 //  using match_results =
  20 //    std::match_results<BidirectionalIterator,
  21 //                       polymorphic_allocator<sub_match<BidirectionalIterator>>>;
  22 //
  23 //  typedef match_results<const char*> cmatch;
  24 //  typedef match_results<const wchar_t*> wcmatch;
  25 //  typedef match_results<string::const_iterator> smatch;
  26 //  typedef match_results<wstring::const_iterator> wsmatch;
  27 //
  28 // }}} // namespace std::experimental::pmr
  29
  30 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
  31
  32 #include <experimental/regex>
  33 #include <type_traits>
  34 #include <cassert>
  35
  36 #include "test_macros.h"
  37
  38 namespace pmr = std::experimental::pmr;
  39
  40 template <class Iter, class PmrTypedef>
  41 void test_match_result_typedef() {
  42     using StdMR = std::match_results<Iter, pmr::polymorphic_allocator<std::sub_match<Iter>>>;
  43     using PmrMR = pmr::match_results<Iter>;
  44     static_assert(std::is_same<StdMR, PmrMR>::value, "");
  45     static_assert(std::is_same<PmrMR, PmrTypedef>::value, "");
  46 }
  47
  48 int main(int, char**)
  49 {
  50     {
  51         test_match_result_typedef<const char*, pmr::cmatch>();
  52         test_match_result_typedef<pmr::string::const_iterator, pmr::smatch>();
  53 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  54         test_match_result_typedef<const wchar_t*, pmr::wcmatch>();
  55         test_match_result_typedef<pmr::wstring::const_iterator, pmr::wsmatch>();
  56 #endif
  57     }
  58     {
  59         // Check that std::match_results has been included and is complete.
  60         pmr::smatch s;
  61         assert(s.get_allocator().resource() == pmr::get_default_resource());
  62     }
  63
  64   return 0;
  65 }