1/////////////////////////////////////////////////////////////////////////////
2//
3// (C) Copyright Ion Gaztanaga 2006-2014
4//
5// Distributed under the Boost Software License, Version 1.0.
6// (See accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt)
8//
9// See http://www.boost.org/libs/intrusive for documentation.
10//
11/////////////////////////////////////////////////////////////////////////////
12
13#ifndef BOOST_INTRUSIVE_DETAIL_IITERATOR_HPP
14#define BOOST_INTRUSIVE_DETAIL_IITERATOR_HPP
15
16#ifndef BOOST_CONFIG_HPP
17# include <boost/config.hpp>
18#endif
19
20#if defined(BOOST_HAS_PRAGMA_ONCE)
21# pragma once
22#endif
23
24#include <boost/intrusive/detail/workaround.hpp>
25#include <boost/intrusive/detail/iterator.hpp>
26#include <boost/intrusive/pointer_traits.hpp>
27#include <boost/intrusive/detail/mpl.hpp>
28#include <boost/intrusive/detail/is_stateful_value_traits.hpp>
29
30namespace boost {
31namespace intrusive {
32
33template<class ValueTraits>
34struct value_traits_pointers
35{
36 typedef BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT
37 (boost::intrusive::detail::
38 , ValueTraits, value_traits_ptr
39 , typename boost::intrusive::pointer_traits<typename ValueTraits::node_traits::node_ptr>::template
40 rebind_pointer<ValueTraits>::type) value_traits_ptr;
41
42 typedef typename boost::intrusive::pointer_traits<value_traits_ptr>::template
43 rebind_pointer<ValueTraits const>::type const_value_traits_ptr;
44};
45
46template<class ValueTraits, bool IsConst, class Category>
47struct iiterator
48{
49 typedef ValueTraits value_traits;
50 typedef typename value_traits::node_traits node_traits;
51 typedef typename node_traits::node node;
52 typedef typename node_traits::node_ptr node_ptr;
53 typedef ::boost::intrusive::pointer_traits<node_ptr> nodepointer_traits_t;
54 typedef typename nodepointer_traits_t::template
55 rebind_pointer<void>::type void_pointer;
56 typedef typename ValueTraits::value_type value_type;
57 typedef typename ValueTraits::pointer nonconst_pointer;
58 typedef typename ValueTraits::const_pointer yesconst_pointer;
59 typedef typename ::boost::intrusive::pointer_traits
60 <nonconst_pointer>::reference nonconst_reference;
61 typedef typename ::boost::intrusive::pointer_traits
62 <yesconst_pointer>::reference yesconst_reference;
63 typedef typename nodepointer_traits_t::difference_type difference_type;
64 typedef typename detail::if_c
65 <IsConst, yesconst_pointer, nonconst_pointer>::type pointer;
66 typedef typename detail::if_c
67 <IsConst, yesconst_reference, nonconst_reference>::type reference;
68 typedef iterator
69 < Category
70 , value_type
71 , difference_type
72 , pointer
73 , reference
74 > iterator_type;
75 typedef typename value_traits_pointers
76 <ValueTraits>::value_traits_ptr value_traits_ptr;
77 typedef typename value_traits_pointers
78 <ValueTraits>::const_value_traits_ptr const_value_traits_ptr;
79 static const bool stateful_value_traits =
80 detail::is_stateful_value_traits<value_traits>::value;
81};
82
83template<class NodePtr, class StoredPointer, bool StatefulValueTraits = true>
84struct iiterator_members
85{
86
87 inline iiterator_members()
88 : nodeptr_()//Value initialization to achieve "null iterators" (N3644)
89 {}
90
91 inline iiterator_members(const NodePtr &n_ptr, const StoredPointer &data)
92 : nodeptr_(n_ptr), ptr_(data)
93 {}
94
95 inline StoredPointer get_ptr() const
96 { return ptr_; }
97
98 NodePtr nodeptr_;
99 StoredPointer ptr_;
100};
101
102template<class NodePtr, class StoredPointer>
103struct iiterator_members<NodePtr, StoredPointer, false>
104{
105 inline iiterator_members()
106 : nodeptr_()//Value initialization to achieve "null iterators" (N3644)
107 {}
108
109 inline iiterator_members(const NodePtr &n_ptr, const StoredPointer &)
110 : nodeptr_(n_ptr)
111 {}
112
113 inline StoredPointer get_ptr() const
114 { return StoredPointer(); }
115
116 NodePtr nodeptr_;
117};
118
119} //namespace intrusive
120} //namespace boost
121
122#endif //BOOST_INTRUSIVE_DETAIL_IITERATOR_HPP
123

source code of boost/libs/intrusive/include/boost/intrusive/detail/iiterator.hpp