libstdc++-v3/include/std/unordered_map

   1 // <unordered_map> -*- C++ -*-
   2
   3 // Copyright (C) 2007-2025 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 /** @file include/unordered_map
  26  *  This is a Standard C++ Library header.
  27  */
  28
  29 #ifndef _GLIBCXX_UNORDERED_MAP
  30 #define _GLIBCXX_UNORDERED_MAP 1
  31
  32 #ifdef _GLIBCXX_SYSHDR
  33 #pragma GCC system_header
  34 #endif
  35
  36 #include <bits/requires_hosted.h> // container
  37
  38 #if __cplusplus < 201103L
  39 # include <bits/c++0x_warning.h>
  40 #else
  41
  42 #include <initializer_list>
  43 #include <bits/unordered_map.h>
  44 #include <bits/range_access.h>
  45 #include <bits/erase_if.h>
  46
  47 #ifdef _GLIBCXX_DEBUG
  48 # include <debug/unordered_map>
  49 #endif
  50
  51 #define __glibcxx_want_allocator_traits_is_always_equal
  52 #define __glibcxx_want_containers_ranges
  53 #define __glibcxx_want_erase_if
  54 #define __glibcxx_want_generic_unordered_lookup
  55 #define __glibcxx_want_node_extract
  56 #define __glibcxx_want_nonmember_container_access
  57 #define __glibcxx_want_unordered_map_try_emplace
  58 #define __glibcxx_want_tuple_like
  59 #include <bits/version.h>
  60
  61 #if __cplusplus >= 201703L
  62 #include <bits/memory_resource.h>
  63 namespace std _GLIBCXX_VISIBILITY(default)
  64 {
  65 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  66   namespace pmr
  67   {
  68     template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
  69              typename _Pred = std::equal_to<_Key>>
  70       using unordered_map
  71         = std::unordered_map<_Key, _Tp, _Hash, _Pred,
  72                              polymorphic_allocator<pair<const _Key, _Tp>>>;
  73     template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
  74              typename _Pred = std::equal_to<_Key>>
  75       using unordered_multimap
  76         = std::unordered_multimap<_Key, _Tp, _Hash, _Pred,
  77                                   polymorphic_allocator<pair<const _Key, _Tp>>>;
  78   } // namespace pmr
  79 _GLIBCXX_END_NAMESPACE_VERSION
  80 } // namespace std
  81 #endif // C++17
  82
  83 #if __cplusplus > 201703L
  84 namespace std _GLIBCXX_VISIBILITY(default)
  85 {
  86 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  87   template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
  88            typename _Alloc, typename _Predicate>
  89     inline typename unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>::size_type
  90     erase_if(unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
  91              _Predicate __pred)
  92     {
  93       _GLIBCXX_STD_C::unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>&
  94         __ucont = __cont;
  95       return __detail::__erase_nodes_if(__cont, __ucont, __pred);
  96     }
  97
  98   template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
  99            typename _Alloc, typename _Predicate>
 100     inline typename unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>::
 101                     size_type
 102     erase_if(unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
 103              _Predicate __pred)
 104     {
 105       _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>&
 106         __ucont = __cont;
 107       return __detail::__erase_nodes_if(__cont, __ucont, __pred);
 108     }
 109 _GLIBCXX_END_NAMESPACE_VERSION
 110 } // namespace std
 111 #endif // C++20
 112
 113 #endif // C++11
 114
 115 #endif // _GLIBCXX_UNORDERED_MAP