173 lines
6.3 KiB
Plaintext
173 lines
6.3 KiB
Plaintext
/////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// (C) Copyright Ion Gaztanaga 2007-2013
|
|
//
|
|
// 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_TREE_ITERATOR_HPP
|
|
#define BOOST_INTRUSIVE_TREE_ITERATOR_HPP
|
|
|
|
#ifndef BOOST_CONFIG_HPP
|
|
# include <boost/config.hpp>
|
|
#endif
|
|
|
|
#if defined(BOOST_HAS_PRAGMA_ONCE)
|
|
# pragma once
|
|
#endif
|
|
|
|
#include <boost/intrusive/detail/config_begin.hpp>
|
|
#include <boost/intrusive/detail/workaround.hpp>
|
|
#include <boost/intrusive/detail/std_fwd.hpp>
|
|
#include <boost/intrusive/detail/iiterator.hpp>
|
|
#include <boost/intrusive/detail/bstree_algorithms_base.hpp>
|
|
|
|
namespace boost {
|
|
namespace intrusive {
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// //
|
|
// Implementation of the tree iterator //
|
|
// //
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// tree_iterator provides some basic functions for a
|
|
// node oriented bidirectional iterator:
|
|
template<class ValueTraits, bool IsConst>
|
|
class tree_iterator
|
|
{
|
|
private:
|
|
typedef iiterator< ValueTraits, IsConst
|
|
, std::bidirectional_iterator_tag> types_t;
|
|
typedef typename types_t::value_traits value_traits;
|
|
typedef typename types_t::node_traits node_traits;
|
|
typedef typename types_t::node node;
|
|
typedef typename types_t::node_ptr node_ptr;
|
|
typedef typename types_t::const_value_traits_ptr const_value_traits_ptr;
|
|
typedef bstree_algorithms_base<node_traits> node_algorithms;
|
|
|
|
static const bool stateful_value_traits = types_t::stateful_value_traits;
|
|
|
|
void unspecified_bool_type_func() const {}
|
|
typedef void (tree_iterator::*unspecified_bool_type)() const;
|
|
|
|
public:
|
|
typedef typename types_t::iterator_type::difference_type difference_type;
|
|
typedef typename types_t::iterator_type::value_type value_type;
|
|
typedef typename types_t::iterator_type::pointer pointer;
|
|
typedef typename types_t::iterator_type::reference reference;
|
|
typedef typename types_t::iterator_type::iterator_category iterator_category;
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE tree_iterator()
|
|
{}
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE explicit tree_iterator(const node_ptr & nodeptr, const const_value_traits_ptr &traits_ptr)
|
|
: members_(nodeptr, traits_ptr)
|
|
{}
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE tree_iterator(tree_iterator<value_traits, false> const& other)
|
|
: members_(other.pointed_node(), other.get_value_traits())
|
|
{}
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE const node_ptr &pointed_node() const
|
|
{ return members_.nodeptr_; }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE tree_iterator &operator=(const node_ptr &nodeptr)
|
|
{ members_.nodeptr_ = nodeptr; return static_cast<tree_iterator&>(*this); }
|
|
|
|
public:
|
|
tree_iterator& operator++()
|
|
{
|
|
members_.nodeptr_ = node_algorithms::next_node(members_.nodeptr_);
|
|
return static_cast<tree_iterator&> (*this);
|
|
}
|
|
|
|
tree_iterator operator++(int)
|
|
{
|
|
tree_iterator result (*this);
|
|
members_.nodeptr_ = node_algorithms::next_node(members_.nodeptr_);
|
|
return result;
|
|
}
|
|
|
|
tree_iterator& operator--()
|
|
{
|
|
members_.nodeptr_ = node_algorithms::prev_node(members_.nodeptr_);
|
|
return static_cast<tree_iterator&> (*this);
|
|
}
|
|
|
|
tree_iterator operator--(int)
|
|
{
|
|
tree_iterator result (*this);
|
|
members_.nodeptr_ = node_algorithms::prev_node(members_.nodeptr_);
|
|
return result;
|
|
}
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE tree_iterator& go_left()
|
|
{
|
|
members_.nodeptr_ = node_traits::get_left(members_.nodeptr_);
|
|
return static_cast<tree_iterator&> (*this);
|
|
}
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE tree_iterator& go_right()
|
|
{
|
|
members_.nodeptr_ = node_traits::get_right(members_.nodeptr_);
|
|
return static_cast<tree_iterator&> (*this);
|
|
}
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE tree_iterator& go_parent()
|
|
{
|
|
members_.nodeptr_ = node_traits::get_parent(members_.nodeptr_);
|
|
return static_cast<tree_iterator&> (*this);
|
|
}
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE operator unspecified_bool_type() const
|
|
{ return members_.nodeptr_ ? &tree_iterator::unspecified_bool_type_func : 0; }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE bool operator! () const
|
|
{ return !members_.nodeptr_; }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE friend bool operator== (const tree_iterator& l, const tree_iterator& r)
|
|
{ return l.pointed_node() == r.pointed_node(); }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE friend bool operator!= (const tree_iterator& l, const tree_iterator& r)
|
|
{ return !(l == r); }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE reference operator*() const
|
|
{ return *operator->(); }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE pointer operator->() const
|
|
{ return this->operator_arrow(detail::bool_<stateful_value_traits>()); }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE const_value_traits_ptr get_value_traits() const
|
|
{ return members_.get_ptr(); }
|
|
|
|
tree_iterator end_iterator_from_it() const
|
|
{
|
|
return tree_iterator(node_algorithms::get_header(this->pointed_node()), this->get_value_traits());
|
|
}
|
|
|
|
tree_iterator<value_traits, false> unconst() const
|
|
{ return tree_iterator<value_traits, false>(this->pointed_node(), this->get_value_traits()); }
|
|
|
|
private:
|
|
BOOST_INTRUSIVE_FORCEINLINE pointer operator_arrow(detail::false_) const
|
|
{ return ValueTraits::to_value_ptr(members_.nodeptr_); }
|
|
|
|
BOOST_INTRUSIVE_FORCEINLINE pointer operator_arrow(detail::true_) const
|
|
{ return this->get_value_traits()->to_value_ptr(members_.nodeptr_); }
|
|
|
|
iiterator_members<node_ptr, const_value_traits_ptr, stateful_value_traits> members_;
|
|
};
|
|
|
|
} //namespace intrusive
|
|
} //namespace boost
|
|
|
|
#include <boost/intrusive/detail/config_end.hpp>
|
|
|
|
#endif //BOOST_INTRUSIVE_TREE_ITERATOR_HPP
|