/usr/include/boost/intrusive/detail
Edit: /usr/include/boost/intrusive/detail/avltree_node.hpp (6714B)
/////////////////////////////////////////////////////////////////////////////
//
// (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_AVLTREE_NODE_HPP
#define BOOST_INTRUSIVE_AVLTREE_NODE_HPP
#ifndef BOOST_CONFIG_HPP
# include
#endif
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#include
#include
#include
#include
#include
#include
namespace boost {
namespace intrusive {
/////////////////////////////////////////////////////////////////////////////
// //
// Generic node_traits for any pointer type //
// //
/////////////////////////////////////////////////////////////////////////////
//This is the compact representation: 3 pointers
template
struct compact_avltree_node
{
typedef typename pointer_rebind >::type node_ptr;
typedef typename pointer_rebind >::type const_node_ptr;
enum balance { negative_t, zero_t, positive_t };
node_ptr parent_, left_, right_;
};
//This is the normal representation: 3 pointers + enum
template
struct avltree_node
{
typedef typename pointer_rebind >::type node_ptr;
typedef typename pointer_rebind >::type const_node_ptr;
enum balance { negative_t, zero_t, positive_t };
node_ptr parent_, left_, right_;
balance balance_;
};
//This is the default node traits implementation
//using a node with 3 generic pointers plus an enum
template
struct default_avltree_node_traits_impl
{
typedef avltree_node node;
typedef typename node::node_ptr node_ptr;
typedef typename node::const_node_ptr const_node_ptr;
typedef typename node::balance balance;
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_parent(const const_node_ptr & n)
{ return n->parent_; }
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_parent(const node_ptr & n)
{ return n->parent_; }
BOOST_INTRUSIVE_FORCEINLINE static void set_parent(node_ptr n, node_ptr p)
{ n->parent_ = p; }
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_left(const const_node_ptr & n)
{ return n->left_; }
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_left(const node_ptr & n)
{ return n->left_; }
BOOST_INTRUSIVE_FORCEINLINE static void set_left(node_ptr n, node_ptr l)
{ n->left_ = l; }
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_right(const const_node_ptr & n)
{ return n->right_; }
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_right(const node_ptr & n)
{ return n->right_; }
BOOST_INTRUSIVE_FORCEINLINE static void set_right(node_ptr n, node_ptr r)
{ n->right_ = r; }
BOOST_INTRUSIVE_FORCEINLINE static balance get_balance(const const_node_ptr & n)
{ return n->balance_; }
BOOST_INTRUSIVE_FORCEINLINE static balance get_balance(const node_ptr & n)
{ return n->balance_; }
BOOST_INTRUSIVE_FORCEINLINE static void set_balance(const node_ptr & n, balance b)
{ n->balance_ = b; }
BOOST_INTRUSIVE_FORCEINLINE static balance negative()
{ return node::negative_t; }
BOOST_INTRUSIVE_FORCEINLINE static balance zero()
{ return node::zero_t; }
BOOST_INTRUSIVE_FORCEINLINE static balance positive()
{ return node::positive_t; }
};
//This is the compact node traits implementation
//using a node with 3 generic pointers
template
struct compact_avltree_node_traits_impl
{
typedef compact_avltree_node node;
typedef typename node::node_ptr node_ptr;
typedef typename node::const_node_ptr const_node_ptr;
typedef typename node::balance balance;
typedef pointer_plus_bits ptr_bit;
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_parent(const const_node_ptr & n)
{ return ptr_bit::get_pointer(n->parent_); }
BOOST_INTRUSIVE_FORCEINLINE static void set_parent(node_ptr n, node_ptr p)
{ ptr_bit::set_pointer(n->parent_, p); }
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_left(const const_node_ptr & n)
{ return n->left_; }
BOOST_INTRUSIVE_FORCEINLINE static void set_left(node_ptr n, node_ptr l)
{ n->left_ = l; }
BOOST_INTRUSIVE_FORCEINLINE static node_ptr get_right(const const_node_ptr & n)
{ return n->right_; }
BOOST_INTRUSIVE_FORCEINLINE static void set_right(node_ptr n, node_ptr r)
{ n->right_ = r; }
BOOST_INTRUSIVE_FORCEINLINE static balance get_balance(const const_node_ptr & n)
{ return (balance)ptr_bit::get_bits(n->parent_); }
BOOST_INTRUSIVE_FORCEINLINE static void set_balance(const node_ptr & n, balance b)
{ ptr_bit::set_bits(n->parent_, (std::size_t)b); }
BOOST_INTRUSIVE_FORCEINLINE static balance negative()
{ return node::negative_t; }
BOOST_INTRUSIVE_FORCEINLINE static balance zero()
{ return node::zero_t; }
BOOST_INTRUSIVE_FORCEINLINE static balance positive()
{ return node::positive_t; }
};
//Dispatches the implementation based on the boolean
template
struct avltree_node_traits_dispatch
: public default_avltree_node_traits_impl
{};
template
struct avltree_node_traits_dispatch
: public compact_avltree_node_traits_impl
{};
//Inherit from rbtree_node_traits_dispatch depending on the embedding capabilities
template
struct avltree_node_traits
: public avltree_node_traits_dispatch
< VoidPointer
, OptimizeSize &&
max_pointer_plus_bits
< VoidPointer
, detail::alignment_of >::value
>::value >= 2u
>
{};
} //namespace intrusive
} //namespace boost
#include
#endif //BOOST_INTRUSIVE_AVLTREE_NODE_HPP