libstdc++-v3/testsuite/util/native_type/native_hash_multimap.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2022 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 terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 3, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  22
  23 // Permission to use, copy, modify, sell, and distribute this software
  24 // is hereby granted without fee, provided that the above copyright
  25 // notice appears in all copies, and that both that copyright notice
  26 // and this permission notice appear in supporting documentation. None
  27 // of the above authors, nor IBM Haifa Research Laboratories, make any
  28 // representation about the suitability of this software for any
  29 // purpose. It is provided "as is" without express or implied
  30 // warranty.
  31
  32 /**
  33  * @file native_hash_multimap.hpp
  34  * Contains an adapter to TR1 unordered containers.
  35  */
  36
  37 #ifndef PB_DS_NATIVE_HASH_MULTIMAP_HPP
  38 #define PB_DS_NATIVE_HASH_MULTIMAP_HPP
  39
  40 #include <string>
  41 #include <tr1/unordered_map>
  42 #include <ext/pb_ds/detail/type_utils.hpp>
  43 #include <ext/pb_ds/detail/standard_policies.hpp>
  44 #include <native_type/native_hash_tag.hpp>
  45 #include <io/xml.hpp>
  46
  47 namespace __gnu_pbds
  48 {
  49   namespace test
  50   {
  51 #define PB_DS_BASE_C_DEC \
  52     std::tr1::unordered_multimap<Key, Data, Hash_Fn, Eq_Fn, _Alloc>
  53
  54     template<typename Key,
  55              typename Data,
  56              size_t Init_Size = 8,
  57        class Hash_Fn = typename __gnu_pbds::detail::default_hash_fn<Key>::type,
  58              class Eq_Fn = std::equal_to<Key>,
  59              class Less_Fn = std::less<Key>,
  60              typename _Alloc = std::allocator<char> >
  61     class native_hash_multimap : public PB_DS_BASE_C_DEC
  62     {
  63     private:
  64       typedef PB_DS_BASE_C_DEC                  base_type;
  65       typedef std::pair<Key, Data>              pair_type;
  66
  67     public:
  68       typedef native_hash_tag                   container_category;
  69       typedef _Alloc                    allocator;
  70       typedef typename base_type::iterator      iterator;
  71       typedef typename base_type::const_iterator const_iterator;
  72
  73       typedef
  74       typename allocator::template rebind<pair_type>::other::const_reference
  75       const_reference;
  76
  77       native_hash_multimap() : base_type(Init_Size)
  78       { }
  79
  80       template<typename It>
  81       native_hash_multimap(It f, It l) : base_type(f, l)
  82       { }
  83
  84       inline void
  85       insert(const_reference r_val)
  86       {
  87         typedef std::pair<iterator, iterator> eq_range_t;
  88         eq_range_t f = base_type::equal_range(r_val.first);
  89
  90         iterator it = f.first;
  91         while (it != f.second)
  92           {
  93             if (it->second == r_val.second)
  94               return;
  95             ++it;
  96           }
  97         base_type::insert(r_val);
  98       }
  99
 100       inline iterator
 101       find(const_reference r_val)
 102       {
 103         typedef std::pair<iterator, iterator> eq_range_t;
 104         eq_range_t f = base_type::equal_range(r_val.first);
 105
 106         iterator it = f.first;
 107         while (it != f.second)
 108           {
 109             if (it->second == r_val.second)
 110               return it;
 111             ++it;
 112           }
 113         return base_type::end();
 114       }
 115
 116       inline const_iterator
 117       find(const_reference r_val) const
 118       {
 119         typedef std::pair<const_iterator, const_iterator> eq_range_t;
 120         eq_range_t f = base_type::equal_range(r_val.first);
 121
 122         const_iterator it = f.first;
 123         while (it != f.second)
 124           {
 125             if (it->second == r_val.second)
 126               return it;
 127             ++it;
 128           }
 129         return base_type::end();
 130       }
 131
 132       static std::string
 133       name()
 134       { return std::string("n_hash_mmap"); }
 135
 136       static std::string
 137       desc()
 138       { return make_xml_tag("type", "value", "__gnucxx_hash_multimap"); }
 139     };
 140
 141 #undef PB_DS_BASE_C_DEC
 142
 143   } // namespace test
 144 } // namespace __gnu_pbds
 145
 146 #endif