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ext-boost/boost/intrusive/sgtree.hpp
Yuri Kunde Schlesner 25db91d480 Update to boost v1.63.0
2017-03-12 21:30:15 -07:00

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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2007-2014
//
// 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.
//
/////////////////////////////////////////////////////////////////////////////
//
// The option that yields to non-floating point 1/sqrt(2) alpha is taken
// from the scapegoat tree implementation of the PSPP library.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTRUSIVE_SGTREE_HPP
#define BOOST_INTRUSIVE_SGTREE_HPP
#include <boost/intrusive/detail/config_begin.hpp>
#include <boost/intrusive/intrusive_fwd.hpp>
#include <boost/intrusive/detail/assert.hpp>
#include <boost/static_assert.hpp>
#include <boost/intrusive/bs_set_hook.hpp>
#include <boost/intrusive/bstree.hpp>
#include <boost/intrusive/detail/tree_node.hpp>
#include <boost/intrusive/pointer_traits.hpp>
#include <boost/intrusive/detail/mpl.hpp>
#include <boost/intrusive/detail/math.hpp>
#include <boost/intrusive/detail/get_value_traits.hpp>
#include <boost/intrusive/sgtree_algorithms.hpp>
#include <boost/intrusive/detail/key_nodeptr_comp.hpp>
#include <boost/intrusive/link_mode.hpp>
#include <boost/move/utility_core.hpp>
#include <boost/move/adl_move_swap.hpp>
#include <cstddef>
#include <boost/intrusive/detail/minimal_less_equal_header.hpp>
#include <boost/intrusive/detail/minimal_pair_header.hpp> //std::pair
#include <cmath>
#include <cstddef>
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
namespace boost {
namespace intrusive {
/// @cond
namespace detail{
/////////////////////////////////////////////////////////////
//
// Halpha for fixed floating_point<false> option
//
/////////////////////////////////////////////////////////////
//! Returns floor(log2(n)/log2(sqrt(2))) -> floor(2*log2(n))
//! Undefined if N is 0.
//!
//! This function does not use float point operations.
inline std::size_t calculate_h_sqrt2 (std::size_t n)
{
std::size_t f_log2 = detail::floor_log2(n);
return (2*f_log2) + static_cast<std::size_t>(n >= detail::sqrt2_pow_2xplus1(f_log2));
}
struct h_alpha_sqrt2_t
{
h_alpha_sqrt2_t(void){}
std::size_t operator()(std::size_t n) const
{ return calculate_h_sqrt2(n); }
};
struct alpha_0_75_by_max_size_t
{
alpha_0_75_by_max_size_t(void){}
std::size_t operator()(std::size_t max_tree_size) const
{
const std::size_t max_tree_size_limit = ((~std::size_t(0))/std::size_t(3));
return max_tree_size > max_tree_size_limit ? max_tree_size/4*3 : max_tree_size*3/4;
}
};
/////////////////////////////////////////////////////////////
//
// Halpha for fixed floating_point<true> option
//
/////////////////////////////////////////////////////////////
struct h_alpha_t
{
explicit h_alpha_t(float inv_minus_logalpha)
: inv_minus_logalpha_(inv_minus_logalpha)
{}
std::size_t operator()(std::size_t n) const
{
////////////////////////////////////////////////////////////
// This function must return "floor(log2(1/alpha(n)))" ->
// floor(log2(n)/log(1/alpha)) ->
// floor(log2(n)/-log2(alpha))
// floor(log2(n)*(1/-log2(alpha)))
////////////////////////////////////////////////////////////
return static_cast<std::size_t>(detail::fast_log2(float(n))*inv_minus_logalpha_);
}
private:
//Since the function will be repeatedly called
//precalculate constant data to avoid repeated
//calls to log and division.
//This will store 1/(-std::log2(alpha_))
float inv_minus_logalpha_;
};
struct alpha_by_max_size_t
{
explicit alpha_by_max_size_t(float alpha)
: alpha_(alpha)
{}
float operator()(std::size_t max_tree_size) const
{ return float(max_tree_size)*alpha_; }
private:
float alpha_;
};
template<bool Activate, class SizeType>
struct alpha_holder
{
typedef boost::intrusive::detail::h_alpha_t h_alpha_t;
typedef boost::intrusive::detail::alpha_by_max_size_t multiply_by_alpha_t;
alpha_holder()
: max_tree_size_()
{ set_alpha(0.70711f); } // ~1/sqrt(2)
float get_alpha() const
{ return alpha_; }
void set_alpha(float alpha)
{
alpha_ = alpha;
inv_minus_logalpha_ = 1/(-detail::fast_log2(alpha));
}
h_alpha_t get_h_alpha_t() const
{ return h_alpha_t(inv_minus_logalpha_); }
multiply_by_alpha_t get_multiply_by_alpha_t() const
{ return multiply_by_alpha_t(alpha_); }
SizeType &get_max_tree_size()
{ return max_tree_size_; }
protected:
float alpha_;
float inv_minus_logalpha_;
SizeType max_tree_size_;
};
template<class SizeType>
struct alpha_holder<false, SizeType>
{
//This specialization uses alpha = 1/sqrt(2)
//without using floating point operations
//Downside: alpha CAN't be changed.
typedef boost::intrusive::detail::h_alpha_sqrt2_t h_alpha_t;
typedef boost::intrusive::detail::alpha_0_75_by_max_size_t multiply_by_alpha_t;
alpha_holder()
: max_tree_size_()
{}
float get_alpha() const
{ return 0.70710677f; }
void set_alpha(float)
{ //alpha CAN't be changed.
BOOST_INTRUSIVE_INVARIANT_ASSERT(0);
}
h_alpha_t get_h_alpha_t() const
{ return h_alpha_t(); }
multiply_by_alpha_t get_multiply_by_alpha_t() const
{ return multiply_by_alpha_t(); }
SizeType &get_max_tree_size()
{ return max_tree_size_; }
protected:
SizeType max_tree_size_;
};
} //namespace detail{
struct sgtree_defaults
: bstree_defaults
{
static const bool floating_point = true;
};
/// @endcond
//! The class template sgtree is an intrusive scapegoat tree container, that
//! is used to construct intrusive sg_set and sg_multiset containers.
//! The no-throw guarantee holds only, if the value_compare object
//! doesn't throw.
//!
//! The template parameter \c T is the type to be managed by the container.
//! The user can specify additional options and if no options are provided
//! default options are used.
//!
//! The container supports the following options:
//! \c base_hook<>/member_hook<>/value_traits<>,
//! \c floating_point<>, \c size_type<> and
//! \c compare<>.
#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
template<class T, class ...Options>
#else
template<class ValueTraits, class VoidOrKeyOfValue, class VoidOrKeyComp, class SizeType, bool FloatingPoint, typename HeaderHolder>
#endif
class sgtree_impl
/// @cond
: public bstree_impl<ValueTraits, VoidOrKeyOfValue, VoidOrKeyComp, SizeType, true, SgTreeAlgorithms, HeaderHolder>
, public detail::alpha_holder<FloatingPoint, SizeType>
/// @endcond
{
public:
typedef ValueTraits value_traits;
/// @cond
typedef bstree_impl< ValueTraits, VoidOrKeyOfValue, VoidOrKeyComp, SizeType
, true, SgTreeAlgorithms, HeaderHolder> tree_type;
typedef tree_type implementation_defined;
/// @endcond
typedef typename implementation_defined::pointer pointer;
typedef typename implementation_defined::const_pointer const_pointer;
typedef typename implementation_defined::value_type value_type;
typedef typename implementation_defined::key_type key_type;
typedef typename implementation_defined::key_of_value key_of_value;
typedef typename implementation_defined::reference reference;
typedef typename implementation_defined::const_reference const_reference;
typedef typename implementation_defined::difference_type difference_type;
typedef typename implementation_defined::size_type size_type;
typedef typename implementation_defined::value_compare value_compare;
typedef typename implementation_defined::key_compare key_compare;
typedef typename implementation_defined::iterator iterator;
typedef typename implementation_defined::const_iterator const_iterator;
typedef typename implementation_defined::reverse_iterator reverse_iterator;
typedef typename implementation_defined::const_reverse_iterator const_reverse_iterator;
typedef typename implementation_defined::node_traits node_traits;
typedef typename implementation_defined::node node;
typedef typename implementation_defined::node_ptr node_ptr;
typedef typename implementation_defined::const_node_ptr const_node_ptr;
typedef BOOST_INTRUSIVE_IMPDEF(sgtree_algorithms<node_traits>) node_algorithms;
static const bool constant_time_size = implementation_defined::constant_time_size;
static const bool floating_point = FloatingPoint;
static const bool stateful_value_traits = implementation_defined::stateful_value_traits;
/// @cond
private:
//noncopyable
typedef detail::alpha_holder<FloatingPoint, SizeType> alpha_traits;
typedef typename alpha_traits::h_alpha_t h_alpha_t;
typedef typename alpha_traits::multiply_by_alpha_t multiply_by_alpha_t;
BOOST_MOVABLE_BUT_NOT_COPYABLE(sgtree_impl)
BOOST_STATIC_ASSERT(((int)value_traits::link_mode != (int)auto_unlink));
enum { safemode_or_autounlink =
(int)value_traits::link_mode == (int)auto_unlink ||
(int)value_traits::link_mode == (int)safe_link };
/// @endcond
public:
typedef BOOST_INTRUSIVE_IMPDEF(typename node_algorithms::insert_commit_data) insert_commit_data;
//! @copydoc ::boost::intrusive::bstree::bstree()
sgtree_impl()
: tree_type()
{}
//! @copydoc ::boost::intrusive::bstree::bstree(const key_compare &,const value_traits &)
explicit sgtree_impl( const key_compare &cmp, const value_traits &v_traits = value_traits())
: tree_type(cmp, v_traits)
{}
//! @copydoc ::boost::intrusive::bstree::bstree(bool,Iterator,Iterator,const key_compare &,const value_traits &)
template<class Iterator>
sgtree_impl( bool unique, Iterator b, Iterator e
, const key_compare &cmp = key_compare()
, const value_traits &v_traits = value_traits())
: tree_type(cmp, v_traits)
{
if(unique)
this->insert_unique(b, e);
else
this->insert_equal(b, e);
}
//! @copydoc ::boost::intrusive::bstree::bstree(bstree &&)
sgtree_impl(BOOST_RV_REF(sgtree_impl) x)
: tree_type(BOOST_MOVE_BASE(tree_type, x)), alpha_traits(x.get_alpha_traits())
{ ::boost::adl_move_swap(this->get_alpha_traits(), x.get_alpha_traits()); }
//! @copydoc ::boost::intrusive::bstree::operator=(bstree &&)
sgtree_impl& operator=(BOOST_RV_REF(sgtree_impl) x)
{
this->get_alpha_traits() = x.get_alpha_traits();
return static_cast<sgtree_impl&>(tree_type::operator=(BOOST_MOVE_BASE(tree_type, x)));
}
/// @cond
private:
const alpha_traits &get_alpha_traits() const
{ return *this; }
alpha_traits &get_alpha_traits()
{ return *this; }
h_alpha_t get_h_alpha_func() const
{ return this->get_alpha_traits().get_h_alpha_t(); }
multiply_by_alpha_t get_alpha_by_max_size_func() const
{ return this->get_alpha_traits().get_multiply_by_alpha_t(); }
/// @endcond
public:
#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
//! @copydoc ::boost::intrusive::bstree::~bstree()
~sgtree_impl();
//! @copydoc ::boost::intrusive::bstree::begin()
iterator begin();
//! @copydoc ::boost::intrusive::bstree::begin()const
const_iterator begin() const;
//! @copydoc ::boost::intrusive::bstree::cbegin()const
const_iterator cbegin() const;
//! @copydoc ::boost::intrusive::bstree::end()
iterator end();
//! @copydoc ::boost::intrusive::bstree::end()const
const_iterator end() const;
//! @copydoc ::boost::intrusive::bstree::cend()const
const_iterator cend() const;
//! @copydoc ::boost::intrusive::bstree::rbegin()
reverse_iterator rbegin();
//! @copydoc ::boost::intrusive::bstree::rbegin()const
const_reverse_iterator rbegin() const;
//! @copydoc ::boost::intrusive::bstree::crbegin()const
const_reverse_iterator crbegin() const;
//! @copydoc ::boost::intrusive::bstree::rend()
reverse_iterator rend();
//! @copydoc ::boost::intrusive::bstree::rend()const
const_reverse_iterator rend() const;
//! @copydoc ::boost::intrusive::bstree::crend()const
const_reverse_iterator crend() const;
//! @copydoc ::boost::intrusive::bstree::root()
iterator root();
//! @copydoc ::boost::intrusive::bstree::root()const
const_iterator root() const;
//! @copydoc ::boost::intrusive::bstree::croot()const
const_iterator croot() const;
//! @copydoc ::boost::intrusive::bstree::container_from_end_iterator(iterator)
static sgtree_impl &container_from_end_iterator(iterator end_iterator);
//! @copydoc ::boost::intrusive::bstree::container_from_end_iterator(const_iterator)
static const sgtree_impl &container_from_end_iterator(const_iterator end_iterator);
//! @copydoc ::boost::intrusive::bstree::container_from_iterator(iterator)
static sgtree_impl &container_from_iterator(iterator it);
//! @copydoc ::boost::intrusive::bstree::container_from_iterator(const_iterator)
static const sgtree_impl &container_from_iterator(const_iterator it);
//! @copydoc ::boost::intrusive::bstree::key_comp()const
key_compare key_comp() const;
//! @copydoc ::boost::intrusive::bstree::value_comp()const
value_compare value_comp() const;
//! @copydoc ::boost::intrusive::bstree::empty()const
bool empty() const;
//! @copydoc ::boost::intrusive::bstree::size()const
size_type size() const;
#endif //#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
//! @copydoc ::boost::intrusive::bstree::swap
void swap(sgtree_impl& other)
{
//This can throw
this->tree_type::swap(static_cast<tree_type&>(other));
::boost::adl_move_swap(this->get_alpha_traits(), other.get_alpha_traits());
}
//! @copydoc ::boost::intrusive::bstree::clone_from(const bstree&,Cloner,Disposer)
//! Additional notes: it also copies the alpha factor from the source container.
template <class Cloner, class Disposer>
void clone_from(const sgtree_impl &src, Cloner cloner, Disposer disposer)
{
tree_type::clone_from(src, cloner, disposer);
this->get_alpha_traits() = src.get_alpha_traits();
}
//! @copydoc ::boost::intrusive::bstree::clone_from(bstree&&,Cloner,Disposer)
//! Additional notes: it also copies the alpha factor from the source container.
template <class Cloner, class Disposer>
void clone_from(BOOST_RV_REF(sgtree_impl) src, Cloner cloner, Disposer disposer)
{
tree_type::clone_from(BOOST_MOVE_BASE(tree_type, src), cloner, disposer);
this->get_alpha_traits() = ::boost::move(src.get_alpha_traits());
}
//! @copydoc ::boost::intrusive::bstree::insert_equal(reference)
iterator insert_equal(reference value)
{
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
if(safemode_or_autounlink)
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
node_ptr p = node_algorithms::insert_equal_upper_bound
(this->tree_type::header_ptr(), to_insert, this->key_node_comp(this->key_comp())
, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
this->tree_type::sz_traits().increment();
this->max_tree_size_ = (size_type)max_tree_size;
return iterator(p, this->priv_value_traits_ptr());
}
//! @copydoc ::boost::intrusive::bstree::insert_equal(const_iterator,reference)
iterator insert_equal(const_iterator hint, reference value)
{
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
if(safemode_or_autounlink)
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
node_ptr p = node_algorithms::insert_equal
( this->tree_type::header_ptr(), hint.pointed_node(), to_insert, this->key_node_comp(this->key_comp())
, (std::size_t)this->size(), this->get_h_alpha_func(), max_tree_size);
this->tree_type::sz_traits().increment();
this->max_tree_size_ = (size_type)max_tree_size;
return iterator(p, this->priv_value_traits_ptr());
}
//! @copydoc ::boost::intrusive::bstree::insert_equal(Iterator,Iterator)
template<class Iterator>
void insert_equal(Iterator b, Iterator e)
{
iterator iend(this->end());
for (; b != e; ++b)
this->insert_equal(iend, *b);
}
//! @copydoc ::boost::intrusive::bstree::insert_unique(reference)
std::pair<iterator, bool> insert_unique(reference value)
{
insert_commit_data commit_data;
std::pair<iterator, bool> ret = this->insert_unique_check
(key_of_value()(value), this->key_comp(), commit_data);
if(!ret.second)
return ret;
return std::pair<iterator, bool> (this->insert_unique_commit(value, commit_data), true);
}
//! @copydoc ::boost::intrusive::bstree::insert_unique(const_iterator,reference)
iterator insert_unique(const_iterator hint, reference value)
{
insert_commit_data commit_data;
std::pair<iterator, bool> ret = this->insert_unique_check
(hint, key_of_value()(value), this->key_comp(), commit_data);
if(!ret.second)
return ret.first;
return this->insert_unique_commit(value, commit_data);
}
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const KeyType&,KeyTypeKeyCompare,insert_commit_data&)
template<class KeyType, class KeyTypeKeyCompare>
BOOST_INTRUSIVE_DOC1ST(std::pair<iterator BOOST_INTRUSIVE_I bool>
, typename detail::disable_if_convertible
<KeyType BOOST_INTRUSIVE_I const_iterator BOOST_INTRUSIVE_I
std::pair<iterator BOOST_INTRUSIVE_I bool> >::type)
insert_unique_check
(const KeyType &key, KeyTypeKeyCompare comp, insert_commit_data &commit_data)
{
std::pair<node_ptr, bool> ret =
node_algorithms::insert_unique_check
(this->tree_type::header_ptr(), key, this->key_node_comp(comp), commit_data);
return std::pair<iterator, bool>(iterator(ret.first, this->priv_value_traits_ptr()), ret.second);
}
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const_iterator,const KeyType&,KeyTypeKeyCompare,insert_commit_data&)
template<class KeyType, class KeyTypeKeyCompare>
std::pair<iterator, bool> insert_unique_check
(const_iterator hint, const KeyType &key
,KeyTypeKeyCompare comp, insert_commit_data &commit_data)
{
std::pair<node_ptr, bool> ret =
node_algorithms::insert_unique_check
(this->tree_type::header_ptr(), hint.pointed_node(), key, this->key_node_comp(comp), commit_data);
return std::pair<iterator, bool>(iterator(ret.first, this->priv_value_traits_ptr()), ret.second);
}
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const key_type&,insert_commit_data&)
std::pair<iterator, bool> insert_unique_check
(const key_type &key, insert_commit_data &commit_data)
{ return this->insert_unique_check(key, this->key_comp(), commit_data); }
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const_iterator,const key_type&,insert_commit_data&)
std::pair<iterator, bool> insert_unique_check
(const_iterator hint, const key_type &key, insert_commit_data &commit_data)
{ return this->insert_unique_check(hint, key, this->key_comp(), commit_data); }
//! @copydoc ::boost::intrusive::bstree::insert_unique_commit
iterator insert_unique_commit(reference value, const insert_commit_data &commit_data)
{
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
if(safemode_or_autounlink)
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
node_algorithms::insert_unique_commit
( this->tree_type::header_ptr(), to_insert, commit_data
, (std::size_t)this->size(), this->get_h_alpha_func(), max_tree_size);
this->tree_type::sz_traits().increment();
this->max_tree_size_ = (size_type)max_tree_size;
return iterator(to_insert, this->priv_value_traits_ptr());
}
//! @copydoc ::boost::intrusive::bstree::insert_unique(Iterator,Iterator)
template<class Iterator>
void insert_unique(Iterator b, Iterator e)
{
if(this->empty()){
iterator iend(this->end());
for (; b != e; ++b)
this->insert_unique(iend, *b);
}
else{
for (; b != e; ++b)
this->insert_unique(*b);
}
}
//! @copydoc ::boost::intrusive::bstree::insert_before
iterator insert_before(const_iterator pos, reference value)
{
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
if(safemode_or_autounlink)
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
node_ptr p = node_algorithms::insert_before
( this->tree_type::header_ptr(), pos.pointed_node(), to_insert
, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
this->tree_type::sz_traits().increment();
this->max_tree_size_ = (size_type)max_tree_size;
return iterator(p, this->priv_value_traits_ptr());
}
//! @copydoc ::boost::intrusive::bstree::push_back
void push_back(reference value)
{
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
if(safemode_or_autounlink)
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
node_algorithms::push_back
( this->tree_type::header_ptr(), to_insert
, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
this->tree_type::sz_traits().increment();
this->max_tree_size_ = (size_type)max_tree_size;
}
//! @copydoc ::boost::intrusive::bstree::push_front
void push_front(reference value)
{
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
if(safemode_or_autounlink)
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
node_algorithms::push_front
( this->tree_type::header_ptr(), to_insert
, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
this->tree_type::sz_traits().increment();
this->max_tree_size_ = (size_type)max_tree_size;
}
//! @copydoc ::boost::intrusive::bstree::erase(const_iterator)
iterator erase(const_iterator i)
{
const_iterator ret(i);
++ret;
node_ptr to_erase(i.pointed_node());
if(safemode_or_autounlink)
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(!node_algorithms::unique(to_erase));
std::size_t max_tree_size = this->max_tree_size_;
node_algorithms::erase
( this->tree_type::header_ptr(), to_erase, (std::size_t)this->size()
, max_tree_size, this->get_alpha_by_max_size_func());
this->max_tree_size_ = (size_type)max_tree_size;
this->tree_type::sz_traits().decrement();
if(safemode_or_autounlink)
node_algorithms::init(to_erase);
return ret.unconst();
}
//! @copydoc ::boost::intrusive::bstree::erase(const_iterator,const_iterator)
iterator erase(const_iterator b, const_iterator e)
{ size_type n; return private_erase(b, e, n); }
//! @copydoc ::boost::intrusive::bstree::erase(const key_type &)
size_type erase(const key_type &key)
{ return this->erase(key, this->key_comp()); }
//! @copydoc ::boost::intrusive::bstree::erase(const KeyType&,KeyTypeKeyCompare)
template<class KeyType, class KeyTypeKeyCompare>
BOOST_INTRUSIVE_DOC1ST(size_type
, typename detail::disable_if_convertible<KeyTypeKeyCompare BOOST_INTRUSIVE_I const_iterator BOOST_INTRUSIVE_I size_type>::type)
erase(const KeyType& key, KeyTypeKeyCompare comp)
{
std::pair<iterator,iterator> p = this->equal_range(key, comp);
size_type n;
private_erase(p.first, p.second, n);
return n;
}
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const_iterator,Disposer)
template<class Disposer>
iterator erase_and_dispose(const_iterator i, Disposer disposer)
{
node_ptr to_erase(i.pointed_node());
iterator ret(this->erase(i));
disposer(this->get_value_traits().to_value_ptr(to_erase));
return ret;
}
#if !defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
template<class Disposer>
iterator erase_and_dispose(iterator i, Disposer disposer)
{ return this->erase_and_dispose(const_iterator(i), disposer); }
#endif
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const_iterator,const_iterator,Disposer)
template<class Disposer>
iterator erase_and_dispose(const_iterator b, const_iterator e, Disposer disposer)
{ size_type n; return private_erase(b, e, n, disposer); }
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const key_type &, Disposer)
template<class Disposer>
size_type erase_and_dispose(const key_type &key, Disposer disposer)
{
std::pair<iterator,iterator> p = this->equal_range(key);
size_type n;
private_erase(p.first, p.second, n, disposer);
return n;
}
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const KeyType&,KeyTypeKeyCompare,Disposer)
template<class KeyType, class KeyTypeKeyCompare, class Disposer>
BOOST_INTRUSIVE_DOC1ST(size_type
, typename detail::disable_if_convertible<KeyTypeKeyCompare BOOST_INTRUSIVE_I const_iterator BOOST_INTRUSIVE_I size_type>::type)
erase_and_dispose(const KeyType& key, KeyTypeKeyCompare comp, Disposer disposer)
{
std::pair<iterator,iterator> p = this->equal_range(key, comp);
size_type n;
private_erase(p.first, p.second, n, disposer);
return n;
}
//! @copydoc ::boost::intrusive::bstree::clear
void clear()
{
tree_type::clear();
this->max_tree_size_ = 0;
}
//! @copydoc ::boost::intrusive::bstree::clear_and_dispose
template<class Disposer>
void clear_and_dispose(Disposer disposer)
{
tree_type::clear_and_dispose(disposer);
this->max_tree_size_ = 0;
}
#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
//! @copydoc ::boost::intrusive::bstree::merge_unique
template<class T, class ...Options2> void merge_unique(sgtree<T, Options2...> &);
#else
template<class Compare2>
void merge_unique(sgtree_impl
<ValueTraits, VoidOrKeyOfValue, Compare2, SizeType, FloatingPoint, HeaderHolder> &source)
#endif
{
node_ptr it (node_algorithms::begin_node(source.header_ptr()))
, itend(node_algorithms::end_node (source.header_ptr()));
while(it != itend){
node_ptr const p(it);
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(!safemode_or_autounlink || !node_algorithms::unique(p));
it = node_algorithms::next_node(it);
std::size_t max_tree1_size = this->max_tree_size_;
std::size_t max_tree2_size = source.get_max_tree_size();
if( node_algorithms::transfer_unique
( this->header_ptr(), this->key_node_comp(this->key_comp()), this->size(), max_tree1_size
, source.header_ptr(), p, source.size(), max_tree2_size
, this->get_h_alpha_func(), this->get_alpha_by_max_size_func()) ){
this->max_tree_size_ = (size_type)max_tree1_size;
this->sz_traits().increment();
source.get_max_tree_size() = (size_type)max_tree2_size;
source.sz_traits().decrement();
}
}
}
#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
//! @copydoc ::boost::intrusive::bstree::merge_equal
template<class T, class ...Options2> void merge_equal(sgtree<T, Options2...> &);
#else
template<class Compare2>
void merge_equal(sgtree_impl
<ValueTraits, VoidOrKeyOfValue, Compare2, SizeType, FloatingPoint, HeaderHolder> &source)
#endif
{
node_ptr it (node_algorithms::begin_node(source.header_ptr()))
, itend(node_algorithms::end_node (source.header_ptr()));
while(it != itend){
node_ptr const p(it);
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(!safemode_or_autounlink || !node_algorithms::unique(p));
it = node_algorithms::next_node(it);
std::size_t max_tree1_size = this->max_tree_size_;
std::size_t max_tree2_size = source.get_max_tree_size();
node_algorithms::transfer_equal
( this->header_ptr(), this->key_node_comp(this->key_comp()), this->size(), max_tree1_size
, source.header_ptr(), p, source.size(), max_tree2_size
, this->get_h_alpha_func(), this->get_alpha_by_max_size_func());
this->max_tree_size_ = (size_type)max_tree1_size;
this->sz_traits().increment();
source.get_max_tree_size() = (size_type)max_tree2_size;
source.sz_traits().decrement();
}
}
#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
//! @copydoc ::boost::intrusive::bstree::count(const key_type &)const
size_type count(const key_type &key) const;
//! @copydoc ::boost::intrusive::bstree::count(const KeyType&,KeyTypeKeyCompare)const
template<class KeyType, class KeyTypeKeyCompare>
size_type count(const KeyType& key, KeyTypeKeyCompare comp) const;
//! @copydoc ::boost::intrusive::bstree::lower_bound(const key_type &)
iterator lower_bound(const key_type &key);
//! @copydoc ::boost::intrusive::bstree::lower_bound(const KeyType&,KeyTypeKeyCompare)
template<class KeyType, class KeyTypeKeyCompare>
iterator lower_bound(const KeyType& key, KeyTypeKeyCompare comp);
//! @copydoc ::boost::intrusive::bstree::lower_bound(const key_type &)const
const_iterator lower_bound(const key_type &key) const;
//! @copydoc ::boost::intrusive::bstree::lower_bound(const KeyType&,KeyTypeKeyCompare)const
template<class KeyType, class KeyTypeKeyCompare>
const_iterator lower_bound(const KeyType& key, KeyTypeKeyCompare comp) const;
//! @copydoc ::boost::intrusive::bstree::upper_bound(const key_type &)
iterator upper_bound(const key_type &key);
//! @copydoc ::boost::intrusive::bstree::upper_bound(const KeyType&,KeyTypeKeyCompare)
template<class KeyType, class KeyTypeKeyCompare>
iterator upper_bound(const KeyType& key, KeyTypeKeyCompare comp);
//! @copydoc ::boost::intrusive::bstree::upper_bound(const key_type &)const
const_iterator upper_bound(const key_type &key) const;
//! @copydoc ::boost::intrusive::bstree::upper_bound(const KeyType&,KeyTypeKeyCompare)const
template<class KeyType, class KeyTypeKeyCompare>
const_iterator upper_bound(const KeyType& key, KeyTypeKeyCompare comp) const;
//! @copydoc ::boost::intrusive::bstree::find(const key_type &)
iterator find(const key_type &key);
//! @copydoc ::boost::intrusive::bstree::find(const KeyType&,KeyTypeKeyCompare)
template<class KeyType, class KeyTypeKeyCompare>
iterator find(const KeyType& key, KeyTypeKeyCompare comp);
//! @copydoc ::boost::intrusive::bstree::find(const key_type &)const
const_iterator find(const key_type &key) const;
//! @copydoc ::boost::intrusive::bstree::find(const KeyType&,KeyTypeKeyCompare)const
template<class KeyType, class KeyTypeKeyCompare>
const_iterator find(const KeyType& key, KeyTypeKeyCompare comp) const;
//! @copydoc ::boost::intrusive::bstree::equal_range(const key_type &)
std::pair<iterator,iterator> equal_range(const key_type &key);
//! @copydoc ::boost::intrusive::bstree::equal_range(const KeyType&,KeyTypeKeyCompare)
template<class KeyType, class KeyTypeKeyCompare>
std::pair<iterator,iterator> equal_range(const KeyType& key, KeyTypeKeyCompare comp);
//! @copydoc ::boost::intrusive::bstree::equal_range(const key_type &)const
std::pair<const_iterator, const_iterator>
equal_range(const key_type &key) const;
//! @copydoc ::boost::intrusive::bstree::equal_range(const KeyType&,KeyTypeKeyCompare)const
template<class KeyType, class KeyTypeKeyCompare>
std::pair<const_iterator, const_iterator>
equal_range(const KeyType& key, KeyTypeKeyCompare comp) const;
//! @copydoc ::boost::intrusive::bstree::bounded_range(const key_type &,const key_type &,bool,bool)
std::pair<iterator,iterator> bounded_range
(const key_type &lower_key, const key_type &upper_key, bool left_closed, bool right_closed);
//! @copydoc ::boost::intrusive::bstree::bounded_range(const KeyType&,const KeyType&,KeyTypeKeyCompare,bool,bool)
template<class KeyType, class KeyTypeKeyCompare>
std::pair<iterator,iterator> bounded_range
(const KeyType& lower_key, const KeyType& upper_key, KeyTypeKeyCompare comp, bool left_closed, bool right_closed);
//! @copydoc ::boost::intrusive::bstree::bounded_range(const key_type &,const key_type &,bool,bool)const
std::pair<const_iterator, const_iterator>
bounded_range(const key_type &lower_key, const key_type &upper_key, bool left_closed, bool right_closed) const;
//! @copydoc ::boost::intrusive::bstree::bounded_range(const KeyType&,const KeyType&,KeyTypeKeyCompare,bool,bool)const
template<class KeyType, class KeyTypeKeyCompare>
std::pair<const_iterator, const_iterator> bounded_range
(const KeyType& lower_key, const KeyType& upper_key, KeyTypeKeyCompare comp, bool left_closed, bool right_closed) const;
//! @copydoc ::boost::intrusive::bstree::s_iterator_to(reference)
static iterator s_iterator_to(reference value);
//! @copydoc ::boost::intrusive::bstree::s_iterator_to(const_reference)
static const_iterator s_iterator_to(const_reference value);
//! @copydoc ::boost::intrusive::bstree::iterator_to(reference)
iterator iterator_to(reference value);
//! @copydoc ::boost::intrusive::bstree::iterator_to(const_reference)const
const_iterator iterator_to(const_reference value) const;
//! @copydoc ::boost::intrusive::bstree::init_node(reference)
static void init_node(reference value);
//! @copydoc ::boost::intrusive::bstree::unlink_leftmost_without_rebalance
pointer unlink_leftmost_without_rebalance();
//! @copydoc ::boost::intrusive::bstree::replace_node
void replace_node(iterator replace_this, reference with_this);
//! @copydoc ::boost::intrusive::bstree::remove_node
void remove_node(reference value);
//! @copydoc ::boost::intrusive::bstree::rebalance
void rebalance();
//! @copydoc ::boost::intrusive::bstree::rebalance_subtree
iterator rebalance_subtree(iterator root);
friend bool operator< (const sgtree_impl &x, const sgtree_impl &y);
friend bool operator==(const sgtree_impl &x, const sgtree_impl &y);
friend bool operator!= (const sgtree_impl &x, const sgtree_impl &y);
friend bool operator>(const sgtree_impl &x, const sgtree_impl &y);
friend bool operator<=(const sgtree_impl &x, const sgtree_impl &y);
friend bool operator>=(const sgtree_impl &x, const sgtree_impl &y);
friend void swap(sgtree_impl &x, sgtree_impl &y);
#endif //#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
//! <b>Returns</b>: The balance factor (alpha) used in this tree
//!
//! <b>Throws</b>: Nothing.
//!
//! <b>Complexity</b>: Constant.
float balance_factor() const
{ return this->get_alpha_traits().get_alpha(); }
//! <b>Requires</b>: new_alpha must be a value between 0.5 and 1.0
//!
//! <b>Effects</b>: Establishes a new balance factor (alpha) and rebalances
//! the tree if the new balance factor is stricter (less) than the old factor.
//!
//! <b>Throws</b>: Nothing.
//!
//! <b>Complexity</b>: Linear to the elements in the subtree.
void balance_factor(float new_alpha)
{
//The alpha factor CAN't be changed if the fixed, floating operation-less
//1/sqrt(2) alpha factor option is activated
BOOST_STATIC_ASSERT((floating_point));
BOOST_INTRUSIVE_INVARIANT_ASSERT((new_alpha > 0.5f && new_alpha < 1.0f));
if(new_alpha >= 0.5f && new_alpha < 1.0f){
float old_alpha = this->get_alpha_traits().get_alpha();
this->get_alpha_traits().set_alpha(new_alpha);
if(new_alpha < old_alpha){
this->max_tree_size_ = this->size();
this->rebalance();
}
}
}
/// @cond
private:
template<class Disposer>
iterator private_erase(const_iterator b, const_iterator e, size_type &n, Disposer disposer)
{
for(n = 0; b != e; ++n)
this->erase_and_dispose(b++, disposer);
return b.unconst();
}
iterator private_erase(const_iterator b, const_iterator e, size_type &n)
{
for(n = 0; b != e; ++n)
this->erase(b++);
return b.unconst();
}
/// @endcond
};
//! Helper metafunction to define a \c sgtree that yields to the same type when the
//! same options (either explicitly or implicitly) are used.
#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
template<class T, class ...Options>
#else
template<class T, class O1 = void, class O2 = void
, class O3 = void, class O4 = void
, class O5 = void, class O6 = void>
#endif
struct make_sgtree
{
/// @cond
typedef typename pack_options
< sgtree_defaults,
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
O1, O2, O3, O4, O5, O6
#else
Options...
#endif
>::type packed_options;
typedef typename detail::get_value_traits
<T, typename packed_options::proto_value_traits>::type value_traits;
typedef sgtree_impl
< value_traits
, typename packed_options::key_of_value
, typename packed_options::compare
, typename packed_options::size_type
, packed_options::floating_point
, typename packed_options::header_holder_type
> implementation_defined;
/// @endcond
typedef implementation_defined type;
};
#ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
template<class T, class O1, class O2, class O3, class O4, class O5, class O6>
#else
template<class T, class ...Options>
#endif
class sgtree
: public make_sgtree<T,
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
O1, O2, O3, O4, O5, O6
#else
Options...
#endif
>::type
{
typedef typename make_sgtree
<T,
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
O1, O2, O3, O4, O5, O6
#else
Options...
#endif
>::type Base;
BOOST_MOVABLE_BUT_NOT_COPYABLE(sgtree)
public:
typedef typename Base::key_compare key_compare;
typedef typename Base::value_traits value_traits;
typedef typename Base::iterator iterator;
typedef typename Base::const_iterator const_iterator;
typedef typename Base::reverse_iterator reverse_iterator;
typedef typename Base::const_reverse_iterator const_reverse_iterator;
//Assert if passed value traits are compatible with the type
BOOST_STATIC_ASSERT((detail::is_same<typename value_traits::value_type, T>::value));
sgtree()
: Base()
{}
explicit sgtree(const key_compare &cmp, const value_traits &v_traits = value_traits())
: Base(cmp, v_traits)
{}
template<class Iterator>
sgtree( bool unique, Iterator b, Iterator e
, const key_compare &cmp = key_compare()
, const value_traits &v_traits = value_traits())
: Base(unique, b, e, cmp, v_traits)
{}
sgtree(BOOST_RV_REF(sgtree) x)
: Base(BOOST_MOVE_BASE(Base, x))
{}
sgtree& operator=(BOOST_RV_REF(sgtree) x)
{ return static_cast<sgtree &>(this->Base::operator=(BOOST_MOVE_BASE(Base, x))); }
template <class Cloner, class Disposer>
void clone_from(const sgtree &src, Cloner cloner, Disposer disposer)
{ Base::clone_from(src, cloner, disposer); }
template <class Cloner, class Disposer>
void clone_from(BOOST_RV_REF(sgtree) src, Cloner cloner, Disposer disposer)
{ Base::clone_from(BOOST_MOVE_BASE(Base, src), cloner, disposer); }
static sgtree &container_from_end_iterator(iterator end_iterator)
{ return static_cast<sgtree &>(Base::container_from_end_iterator(end_iterator)); }
static const sgtree &container_from_end_iterator(const_iterator end_iterator)
{ return static_cast<const sgtree &>(Base::container_from_end_iterator(end_iterator)); }
static sgtree &container_from_iterator(iterator it)
{ return static_cast<sgtree &>(Base::container_from_iterator(it)); }
static const sgtree &container_from_iterator(const_iterator it)
{ return static_cast<const sgtree &>(Base::container_from_iterator(it)); }
};
#endif
} //namespace intrusive
} //namespace boost
#include <boost/intrusive/detail/config_end.hpp>
#endif //BOOST_INTRUSIVE_SGTREE_HPP
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