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
|
/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2007-2012
//
// 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)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTRUSIVE_GENERIC_HOOK_HPP
#define BOOST_INTRUSIVE_GENERIC_HOOK_HPP
#include <boost/intrusive/detail/config_begin.hpp>
#include <boost/intrusive/intrusive_fwd.hpp>
#include <boost/intrusive/pointer_traits.hpp>
#include <boost/intrusive/link_mode.hpp>
#include <boost/intrusive/detail/utilities.hpp>
#include <boost/intrusive/detail/mpl.hpp>
#include <boost/intrusive/pointer_traits.hpp>
#include <boost/static_assert.hpp>
namespace boost {
namespace intrusive {
namespace detail {
/// @cond
enum
{ NoBaseHook
, ListBaseHook
, SlistBaseHook
, SetBaseHook
, UsetBaseHook
, SplaySetBaseHook
, AvlSetBaseHook
, BsSetBaseHook
, AnyBaseHook
};
struct no_default_definer{};
template <class Hook, unsigned int>
struct default_definer;
template <class Hook>
struct default_definer<Hook, ListBaseHook>
{ typedef Hook default_list_hook; };
template <class Hook>
struct default_definer<Hook, SlistBaseHook>
{ typedef Hook default_slist_hook; };
template <class Hook>
struct default_definer<Hook, SetBaseHook>
{ typedef Hook default_set_hook; };
template <class Hook>
struct default_definer<Hook, UsetBaseHook>
{ typedef Hook default_uset_hook; };
template <class Hook>
struct default_definer<Hook, SplaySetBaseHook>
{ typedef Hook default_splay_set_hook; };
template <class Hook>
struct default_definer<Hook, AvlSetBaseHook>
{ typedef Hook default_avl_set_hook; };
template <class Hook>
struct default_definer<Hook, BsSetBaseHook>
{ typedef Hook default_bs_set_hook; };
template <class Hook>
struct default_definer<Hook, AnyBaseHook>
{ typedef Hook default_any_hook; };
template <class Hook, unsigned int BaseHookType>
struct make_default_definer
{
typedef typename detail::if_c
< BaseHookType != 0
, default_definer<Hook, BaseHookType>
, no_default_definer>::type type;
};
template
< class GetNodeAlgorithms
, class Tag
, link_mode_type LinkMode
, int HookType
>
struct make_node_holder
{
typedef typename detail::if_c
<!detail::is_same<Tag, member_tag>::value
, detail::node_holder
< typename GetNodeAlgorithms::type::node
, Tag
, LinkMode
, HookType>
, typename GetNodeAlgorithms::type::node
>::type type;
};
/// @endcond
template
< class GetNodeAlgorithms
, class Tag
, link_mode_type LinkMode
, int HookType
>
class generic_hook
/// @cond
//If the hook is a base hook, derive generic hook from detail::node_holder
//so that a unique base class is created to convert from the node
//to the type. This mechanism will be used by base_hook_traits.
//
//If the hook is a member hook, generic hook will directly derive
//from the hook.
: public make_default_definer
< generic_hook<GetNodeAlgorithms, Tag, LinkMode, HookType>
, detail::is_same<Tag, default_tag>::value*HookType
>::type
, public make_node_holder<GetNodeAlgorithms, Tag, LinkMode, HookType>::type
/// @endcond
{
/// @cond
typedef typename GetNodeAlgorithms::type node_algorithms;
typedef typename node_algorithms::node node;
typedef typename node_algorithms::node_ptr node_ptr;
typedef typename node_algorithms::const_node_ptr const_node_ptr;
public:
struct boost_intrusive_tags
{
static const int hook_type = HookType;
static const link_mode_type link_mode = LinkMode;
typedef Tag tag;
typedef typename GetNodeAlgorithms::type::node_traits node_traits;
static const bool is_base_hook = !detail::is_same<Tag, member_tag>::value;
static const bool safemode_or_autounlink =
(int)link_mode == (int)auto_unlink || (int)link_mode == (int)safe_link;
};
node_ptr this_ptr()
{ return pointer_traits<node_ptr>::pointer_to(static_cast<node&>(*this)); }
const_node_ptr this_ptr() const
{ return pointer_traits<const_node_ptr>::pointer_to(static_cast<const node&>(*this)); }
public:
/// @endcond
generic_hook()
{
if(boost_intrusive_tags::safemode_or_autounlink){
node_algorithms::init(this->this_ptr());
}
}
generic_hook(const generic_hook& )
{
if(boost_intrusive_tags::safemode_or_autounlink){
node_algorithms::init(this->this_ptr());
}
}
generic_hook& operator=(const generic_hook& )
{ return *this; }
~generic_hook()
{
destructor_impl
(*this, detail::link_dispatch<boost_intrusive_tags::link_mode>());
}
void swap_nodes(generic_hook &other)
{
node_algorithms::swap_nodes
(this->this_ptr(), other.this_ptr());
}
bool is_linked() const
{
//is_linked() can be only used in safe-mode or auto-unlink
BOOST_STATIC_ASSERT(( boost_intrusive_tags::safemode_or_autounlink ));
return !node_algorithms::unique(this->this_ptr());
}
void unlink()
{
BOOST_STATIC_ASSERT(( (int)boost_intrusive_tags::link_mode == (int)auto_unlink ));
node_algorithms::unlink(this->this_ptr());
node_algorithms::init(this->this_ptr());
}
};
} //namespace detail
} //namespace intrusive
} //namespace boost
#include <boost/intrusive/detail/config_end.hpp>
#endif //BOOST_INTRUSIVE_GENERIC_HOOK_HPP
|
