1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006 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 2, 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 COPYING.  If not, write to
18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19// MA 02111-1307, USA.
20
21// As a special exception, you may use this file as part of a free
22// software library without restriction.  Specifically, if other files
23// instantiate templates or use macros or inline functions from this
24// file, or you compile this file and link it with other files to
25// produce an executable, this file does not by itself cause the
26// resulting executable to be covered by the GNU General Public
27// License.  This exception does not however invalidate any other
28// reasons why the executable file might be covered by the GNU General
29// Public License.
30
31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
32
33// Permission to use, copy, modify, sell, and distribute this software
34// is hereby granted without fee, provided that the above copyright
35// notice appears in all copies, and that both that copyright notice
36// and this permission notice appear in supporting documentation. None
37// of the above authors, nor IBM Haifa Research Laboratories, make any
38// representation about the suitability of this software for any
39// purpose. It is provided "as is" without express or implied
40// warranty.
41
42/**
43 * @file sample_trie_e_access_traits.hpp
44 * Contains a sample probe policy.
45 */
46
47#ifndef PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
48#define PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
49
50// A sample trie element-access traits.
51class sample_trie_e_access_traits
52{
53
54public:
55
56  // Size type.
57  typedef size_t size_type;
58
59  // Key type.
60  typedef std::string key_type;
61
62  // Const key reference type.
63  typedef
64  typename Allocator::template rebind<
65    key_type>::other::const_reference
66  const_key_reference;
67
68  // Element const iterator type.
69  typedef std::string::const_iterator const_iterator;
70
71  // Element type.
72  typedef char e_type;
73
74  enum
75    {
76      max_size = 4
77    };
78
79public:
80
81  // Returns a const_iterator to the first element of r_key.
82  inline static const_iterator
83  begin(const_key_reference r_key);
84
85  // Returns a const_iterator to the after-last element of r_key.
86  inline static const_iterator
87  end(const_key_reference r_key);
88
89  // Maps an element to a position.
90  inline static size_type
91  e_pos(e_type e);
92
93};
94
95#endif // #ifndef PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
96