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// 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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
26
27// Permission to use, copy, modify, sell, and distribute this software
28// is hereby granted without fee, provided that the above copyright
29// notice appears in all copies, and that both that copyright notice
30// and this permission notice appear in supporting documentation. None
31// of the above authors, nor IBM Haifa Research Laboratories, make any
32// representation about the suitability of this software for any
33// purpose. It is provided "as is" without express or implied
34// warranty.
35
36/**
37 * @file trie_policy/sample_trie_access_traits.hpp
38 * Contains a sample probe policy.
39 */
40
41#ifndef PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
42#define PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
43
44namespace __gnu_pbds
45{
46  /// A sample trie element access traits.
47  struct sample_trie_access_traits
48  {
49    typedef std::size_t 		       		size_type;
50    typedef std::string 			       	key_type;
51
52    typedef typename _Alloc::template rebind<key_type>	__rebind_k;
53    typedef typename __rebind_k::other::const_reference	key_const_reference;
54    typedef std::string::const_iterator 		const_iterator;
55
56    /// Element type.
57    typedef char 				       	e_type;
58
59    enum
60      {
61	max_size = 4
62      };
63
64    /// Returns a const_iterator to the first element of r_key.
65    inline static const_iterator
66    begin(key_const_reference);
67
68    /// Returns a const_iterator to the after-last element of r_key.
69    inline static const_iterator
70    end(key_const_reference);
71
72    /// Maps an element to a position.
73    inline static size_type
74    e_pos(e_type);
75  };
76}
77#endif // #ifndef PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
78