1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// -*- C++ -*-
// Copyright (C) 2005, 2006, 2007, 2009, 2011 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License as published by the Free Software
// Foundation; either version 3, or (at your option) any later
// version.
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.
/**
* @file detail/standard_policies.hpp
* Contains standard policies for containers.
*/
#ifndef PB_DS_STANDARD_POLICIES_HPP
#define PB_DS_STANDARD_POLICIES_HPP
#include <memory>
#include <ext/pb_ds/hash_policy.hpp>
#include <ext/pb_ds/list_update_policy.hpp>
#include <ext/pb_ds/detail/branch_policy/null_node_metadata.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/trie_policy.hpp>
#include <ext/pb_ds/tag_and_trait.hpp>
#include <tr1/functional>
namespace __gnu_pbds
{
namespace detail
{
/// Primary template, default_hash_fn.
template<typename Key>
struct default_hash_fn
{
/// Dispatched type.
typedef std::tr1::hash<Key> type;
};
/// Primary template, default_eq_fn.
template<typename Key>
struct default_eq_fn
{
/// Dispatched type.
typedef std::equal_to<Key> type;
};
/// Enumeration for default behavior of stored hash data.
enum
{
default_store_hash = false
};
/// Primary template, default_comb_hash_fn.
struct default_comb_hash_fn
{
/// Dispatched type.
typedef direct_mask_range_hashing<> type;
};
/// Primary template, default_resize_policy.
template<typename Comb_Hash_Fn>
struct default_resize_policy
{
private:
typedef typename Comb_Hash_Fn::size_type size_type;
typedef direct_mask_range_hashing<size_type> default_fn;
typedef is_same<default_fn, Comb_Hash_Fn> same_type;
typedef hash_exponential_size_policy<size_type> iftrue;
typedef hash_prime_size_policy iffalse;
typedef __conditional_type<same_type::value, iftrue, iffalse> cond_type;
typedef typename cond_type::__type size_policy_type;
typedef hash_load_check_resize_trigger<false, size_type> trigger;
public:
/// Dispatched type.
typedef hash_standard_resize_policy<size_policy_type, trigger,
false, size_type> type;
};
/// Default update policy.
struct default_update_policy
{
/// Dispatched type.
typedef lu_move_to_front_policy<> type;
};
/// Primary template, default_probe_fn.
template<typename Comb_Probe_Fn>
struct default_probe_fn
{
private:
typedef typename Comb_Probe_Fn::size_type size_type;
typedef direct_mask_range_hashing<size_type> default_fn;
typedef is_same<default_fn, Comb_Probe_Fn> same_type;
typedef linear_probe_fn<size_type> iftrue;
typedef quadratic_probe_fn<size_type> iffalse;
typedef __conditional_type<same_type::value, iftrue, iffalse> cond_type;
public:
/// Dispatched type.
typedef typename cond_type::__type type;
};
/// Primary template, default_trie_access_traits.
template<typename Key>
struct default_trie_access_traits;
#define __dtrie_alloc std::allocator<char>
#define __dtrie_string std::basic_string<Char, Char_Traits, __dtrie_alloc>
/// Partial specialization, default_trie_access_traits.
template<typename Char, typename Char_Traits>
struct default_trie_access_traits<__dtrie_string>
{
private:
typedef __dtrie_string string_type;
public:
/// Dispatched type.
typedef trie_string_access_traits<string_type> type;
};
#undef __dtrie_alloc
#undef __dtrie_string
} // namespace detail
} // namespace __gnu_pbds
#endif // #ifndef PB_DS_STANDARD_POLICIES_HPP
|
