1// -*- C++ -*-
2
3// Copyright (C) 2005-2015 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
47namespace __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
147