libcxx/test/std/experimental/memory/memory.resource.aliases/header_map_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
  11 // XFAIL: availability-aligned_allocation-missing
  12
  13 // <experimental/map>
  14
  15 // namespace std { namespace experimental { namespace pmr {
  16 // template <class K, class V, class Compare = less<Key> >
  17 // using map =
  18 //     ::std::map<K, V, Compare, polymorphic_allocator<pair<const K, V>>>
  19 //
  20 // template <class K, class V, class Compare = less<Key> >
  21 // using multimap =
  22 //     ::std::multimap<K, V, Compare, polymorphic_allocator<pair<const K, V>>>
  23 //
  24 // }}} // namespace std::experimental::pmr
  25
  26 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
  27
  28 #include <experimental/map>
  29 #include <experimental/memory_resource>
  30 #include <type_traits>
  31 #include <cassert>
  32
  33 #include "test_macros.h"
  34
  35 namespace pmr = std::experimental::pmr;
  36
  37 int main(int, char**)
  38 {
  39     using K = int;
  40     using V = char;
  41     using DC = std::less<int>;
  42     using OC = std::greater<int>;
  43     using P = std::pair<const K, V>;
  44     {
  45         using StdMap = std::map<K, V, DC, pmr::polymorphic_allocator<P>>;
  46         using PmrMap = pmr::map<K, V>;
  47         static_assert(std::is_same<StdMap, PmrMap>::value, "");
  48     }
  49     {
  50         using StdMap = std::map<K, V, OC, pmr::polymorphic_allocator<P>>;
  51         using PmrMap = pmr::map<K, V, OC>;
  52         static_assert(std::is_same<StdMap, PmrMap>::value, "");
  53     }
  54     {
  55         pmr::map<int, int> m;
  56         assert(m.get_allocator().resource() == pmr::get_default_resource());
  57     }
  58     {
  59         using StdMap = std::multimap<K, V, DC, pmr::polymorphic_allocator<P>>;
  60         using PmrMap = pmr::multimap<K, V>;
  61         static_assert(std::is_same<StdMap, PmrMap>::value, "");
  62     }
  63     {
  64         using StdMap = std::multimap<K, V, OC, pmr::polymorphic_allocator<P>>;
  65         using PmrMap = pmr::multimap<K, V, OC>;
  66         static_assert(std::is_same<StdMap, PmrMap>::value, "");
  67     }
  68     {
  69         pmr::multimap<int, int> m;
  70         assert(m.get_allocator().resource() == pmr::get_default_resource());
  71     }
  72
  73   return 0;
  74 }