1/////////////////////////////////////////////////////////////////////////////
2//
3// (C) Copyright Olaf Krzikalla 2004-2006.
4// (C) Copyright Ion Gaztanaga 2006-2013
5//
6// Distributed under the Boost Software License, Version 1.0.
7// (See accompanying file LICENSE_1_0.txt or copy at
8// http://www.boost.org/LICENSE_1_0.txt)
9//
10// See http://www.boost.org/libs/intrusive for documentation.
11//
12/////////////////////////////////////////////////////////////////////////////
13
14#ifndef BOOST_INTRUSIVE_SLIST_ITERATOR_HPP
15#define BOOST_INTRUSIVE_SLIST_ITERATOR_HPP
16
17#ifndef BOOST_CONFIG_HPP
18# include <boost/config.hpp>
19#endif
20
21#if defined(BOOST_HAS_PRAGMA_ONCE)
22# pragma once
23#endif
24
25#include <boost/intrusive/detail/config_begin.hpp>
26#include <boost/intrusive/detail/workaround.hpp>
27#include <boost/intrusive/detail/std_fwd.hpp>
28#include <boost/intrusive/detail/iiterator.hpp>
29#include <boost/intrusive/detail/mpl.hpp>
30
31namespace boost {
32namespace intrusive {
33
34
35// slist_iterator provides some basic functions for a
36// node oriented bidirectional iterator:
37template<class ValueTraits, bool IsConst>
38class slist_iterator
39{
40 private:
41 typedef iiterator
42 <ValueTraits, IsConst, std::forward_iterator_tag> types_t;
43
44 static const bool stateful_value_traits = types_t::stateful_value_traits;
45
46 typedef ValueTraits value_traits;
47 typedef typename types_t::node_traits node_traits;
48
49 typedef typename types_t::node node;
50 typedef typename types_t::node_ptr node_ptr;
51 typedef typename types_t::const_value_traits_ptr const_value_traits_ptr;
52
53 public:
54 typedef typename types_t::iterator_type::difference_type difference_type;
55 typedef typename types_t::iterator_type::value_type value_type;
56 typedef typename types_t::iterator_type::pointer pointer;
57 typedef typename types_t::iterator_type::reference reference;
58 typedef typename types_t::iterator_type::iterator_category iterator_category;
59
60 BOOST_INTRUSIVE_FORCEINLINE slist_iterator()
61 {}
62
63 BOOST_INTRUSIVE_FORCEINLINE explicit slist_iterator(const node_ptr & nodeptr, const const_value_traits_ptr &traits_ptr)
64 : members_(nodeptr, traits_ptr)
65 {}
66
67 BOOST_INTRUSIVE_FORCEINLINE slist_iterator(slist_iterator<ValueTraits, false> const& other)
68 : members_(other.pointed_node(), other.get_value_traits())
69 {}
70
71 BOOST_INTRUSIVE_FORCEINLINE const node_ptr &pointed_node() const
72 { return members_.nodeptr_; }
73
74 BOOST_INTRUSIVE_FORCEINLINE slist_iterator &operator=(const node_ptr &node)
75 { members_.nodeptr_ = node; return static_cast<slist_iterator&>(*this); }
76
77 BOOST_INTRUSIVE_FORCEINLINE const_value_traits_ptr get_value_traits() const
78 { return members_.get_ptr(); }
79
80 public:
81 BOOST_INTRUSIVE_FORCEINLINE slist_iterator& operator++()
82 {
83 members_.nodeptr_ = node_traits::get_next(members_.nodeptr_);
84 return static_cast<slist_iterator&> (*this);
85 }
86
87 BOOST_INTRUSIVE_FORCEINLINE slist_iterator operator++(int)
88 {
89 slist_iterator result (*this);
90 members_.nodeptr_ = node_traits::get_next(members_.nodeptr_);
91 return result;
92 }
93
94 BOOST_INTRUSIVE_FORCEINLINE friend bool operator== (const slist_iterator& l, const slist_iterator& r)
95 { return l.pointed_node() == r.pointed_node(); }
96
97 BOOST_INTRUSIVE_FORCEINLINE friend bool operator!= (const slist_iterator& l, const slist_iterator& r)
98 { return !(l == r); }
99
100 BOOST_INTRUSIVE_FORCEINLINE reference operator*() const
101 { return *operator->(); }
102
103 BOOST_INTRUSIVE_FORCEINLINE pointer operator->() const
104 { return this->operator_arrow(detail::bool_<stateful_value_traits>()); }
105
106 BOOST_INTRUSIVE_FORCEINLINE slist_iterator<ValueTraits, false> unconst() const
107 { return slist_iterator<ValueTraits, false>(this->pointed_node(), this->get_value_traits()); }
108
109 private:
110
111 BOOST_INTRUSIVE_FORCEINLINE pointer operator_arrow(detail::false_) const
112 { return ValueTraits::to_value_ptr(members_.nodeptr_); }
113
114 BOOST_INTRUSIVE_FORCEINLINE pointer operator_arrow(detail::true_) const
115 { return this->get_value_traits()->to_value_ptr(members_.nodeptr_); }
116
117 iiterator_members<node_ptr, const_value_traits_ptr, stateful_value_traits> members_;
118};
119
120} //namespace intrusive
121} //namespace boost
122
123#include <boost/intrusive/detail/config_end.hpp>
124
125#endif //BOOST_INTRUSIVE_SLIST_ITERATOR_HPP
126