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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
|
// Copyright 2005-2009 Daniel James.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// Based on Peter Dimov's proposal
// http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
// issue 6.18.
// This implements the extensions to the standard.
// It's undocumented, so you shouldn't use it....
#if !defined(BOOST_FUNCTIONAL_HASH_EXTENSIONS_HPP)
#define BOOST_FUNCTIONAL_HASH_EXTENSIONS_HPP
#include <boost/functional/hash/hash.hpp>
#include <boost/detail/container_fwd.hpp>
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#if defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
#include <boost/type_traits/is_array.hpp>
#endif
#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
#include <boost/type_traits/is_const.hpp>
#endif
namespace boost
{
template <class A, class B>
std::size_t hash_value(std::pair<A, B> const&);
template <class T, class A>
std::size_t hash_value(std::vector<T, A> const&);
template <class T, class A>
std::size_t hash_value(std::list<T, A> const& v);
template <class T, class A>
std::size_t hash_value(std::deque<T, A> const& v);
template <class K, class C, class A>
std::size_t hash_value(std::set<K, C, A> const& v);
template <class K, class C, class A>
std::size_t hash_value(std::multiset<K, C, A> const& v);
template <class K, class T, class C, class A>
std::size_t hash_value(std::map<K, T, C, A> const& v);
template <class K, class T, class C, class A>
std::size_t hash_value(std::multimap<K, T, C, A> const& v);
template <class T>
std::size_t hash_value(std::complex<T> const&);
template <class A, class B>
std::size_t hash_value(std::pair<A, B> const& v)
{
std::size_t seed = 0;
hash_combine(seed, v.first);
hash_combine(seed, v.second);
return seed;
}
template <class T, class A>
std::size_t hash_value(std::vector<T, A> const& v)
{
return hash_range(v.begin(), v.end());
}
template <class T, class A>
std::size_t hash_value(std::list<T, A> const& v)
{
return hash_range(v.begin(), v.end());
}
template <class T, class A>
std::size_t hash_value(std::deque<T, A> const& v)
{
return hash_range(v.begin(), v.end());
}
template <class K, class C, class A>
std::size_t hash_value(std::set<K, C, A> const& v)
{
return hash_range(v.begin(), v.end());
}
template <class K, class C, class A>
std::size_t hash_value(std::multiset<K, C, A> const& v)
{
return hash_range(v.begin(), v.end());
}
template <class K, class T, class C, class A>
std::size_t hash_value(std::map<K, T, C, A> const& v)
{
return hash_range(v.begin(), v.end());
}
template <class K, class T, class C, class A>
std::size_t hash_value(std::multimap<K, T, C, A> const& v)
{
return hash_range(v.begin(), v.end());
}
template <class T>
std::size_t hash_value(std::complex<T> const& v)
{
boost::hash<T> hasher;
std::size_t seed = hasher(v.imag());
seed ^= hasher(v.real()) + (seed<<6) + (seed>>2);
return seed;
}
//
// call_hash_impl
//
// On compilers without function template ordering, this deals with arrays.
#if defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
namespace hash_detail
{
template <bool IsArray>
struct call_hash_impl
{
template <class T>
struct inner
{
static std::size_t call(T const& v)
{
using namespace boost;
return hash_value(v);
}
};
};
template <>
struct call_hash_impl<true>
{
template <class Array>
struct inner
{
#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
static std::size_t call(Array const& v)
#else
static std::size_t call(Array& v)
#endif
{
const int size = sizeof(v) / sizeof(*v);
return boost::hash_range(v, v + size);
}
};
};
template <class T>
struct call_hash
: public call_hash_impl<boost::is_array<T>::value>
::BOOST_NESTED_TEMPLATE inner<T>
{
};
}
#endif // BOOST_NO_FUNCTION_TEMPLATE_ORDERING
//
// boost::hash
//
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
template <class T> struct hash
: std::unary_function<T, std::size_t>
{
#if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
std::size_t operator()(T const& val) const
{
return hash_value(val);
}
#else
std::size_t operator()(T const& val) const
{
return hash_detail::call_hash<T>::call(val);
}
#endif
};
#if BOOST_WORKAROUND(__DMC__, <= 0x848)
template <class T, unsigned int n> struct hash<T[n]>
: std::unary_function<T[n], std::size_t>
{
std::size_t operator()(const T* val) const
{
return boost::hash_range(val, val+n);
}
};
#endif
#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
// On compilers without partial specialization, boost::hash<T>
// has already been declared to deal with pointers, so just
// need to supply the non-pointer version of hash_impl.
namespace hash_detail
{
template <bool IsPointer>
struct hash_impl;
#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
template <>
struct hash_impl<false>
{
template <class T>
struct inner
: std::unary_function<T, std::size_t>
{
#if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
std::size_t operator()(T const& val) const
{
return hash_value(val);
}
#else
std::size_t operator()(T const& val) const
{
return hash_detail::call_hash<T>::call(val);
}
#endif
};
};
#else // Visual C++ 6.5
// Visual C++ 6.5 has problems with nested member functions and
// applying const to const types in templates. So we get this:
template <bool IsConst>
struct hash_impl_msvc
{
template <class T>
struct inner
: public std::unary_function<T, std::size_t>
{
std::size_t operator()(T const& val) const
{
return hash_detail::call_hash<T const>::call(val);
}
std::size_t operator()(T& val) const
{
return hash_detail::call_hash<T>::call(val);
}
};
};
template <>
struct hash_impl_msvc<true>
{
template <class T>
struct inner
: public std::unary_function<T, std::size_t>
{
std::size_t operator()(T& val) const
{
return hash_detail::call_hash<T>::call(val);
}
};
};
template <class T>
struct hash_impl_msvc2
: public hash_impl_msvc<boost::is_const<T>::value>
::BOOST_NESTED_TEMPLATE inner<T> {};
template <>
struct hash_impl<false>
{
template <class T>
struct inner : public hash_impl_msvc2<T> {};
};
#endif // Visual C++ 6.5
}
#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
}
#endif
|