boost/intrusive/list.hpp
///////////////////////////////////////////////////////////////////////////// // // (C) Copyright Olaf Krzikalla 2004-2006. // (C) Copyright Ion Gaztanaga 2006-2007 // // 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_LIST_HPP #define BOOST_INTRUSIVE_LIST_HPP #include <boost/intrusive/detail/config_begin.hpp> #include <boost/intrusive/detail/assert.hpp> #include <boost/intrusive/intrusive_fwd.hpp> #include <boost/intrusive/list_hook.hpp> #include <boost/intrusive/circular_list_algorithms.hpp> #include <boost/intrusive/detail/pointer_to_other.hpp> #include <boost/intrusive/detail/mpl.hpp> #include <boost/intrusive/link_mode.hpp> #include <boost/static_assert.hpp> #include <boost/intrusive/options.hpp> #include <boost/intrusive/detail/utilities.hpp> #include <iterator> #include <algorithm> #include <functional> #include <cstddef> namespace boost { namespace intrusive { /// @cond template <class T> struct internal_default_list_hook { template <class U> static detail::one test(...); template <class U> static detail::two test(typename U::default_list_hook* = 0); static const bool value = sizeof(test<T>(0)) == sizeof(detail::two); }; template <class T> struct get_default_list_hook { typedef typename T::default_list_hook type; }; template <class ValueTraits, class SizeType, bool ConstantTimeSize> struct listopt { typedef ValueTraits value_traits; typedef SizeType size_type; static const bool constant_time_size = ConstantTimeSize; }; template <class T> struct list_defaults : pack_options < none , base_hook < typename detail::eval_if_c < internal_default_list_hook<T>::value , get_default_list_hook<T> , detail::identity<none> >::type > , constant_time_size<true> , size_type<std::size_t> >::type {}; /// @endcond //! The class template list is an intrusive container that mimics most of the //! interface of std::list as described in the C++ standard. //! //! 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 constant_time_size<> and \c size_type<>. #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif class list_impl { //Public typedefs public: typedef typename Config::value_traits value_traits; /// @cond static const bool external_value_traits = detail::external_value_traits_is_true<value_traits>::value; typedef typename detail::eval_if_c < external_value_traits , detail::eval_value_traits<value_traits> , detail::identity<value_traits> >::type real_value_traits; /// @endcond typedef typename real_value_traits::pointer pointer; typedef typename real_value_traits::const_pointer const_pointer; typedef typename std::iterator_traits<pointer>::value_type value_type; typedef typename std::iterator_traits<pointer>::reference reference; typedef typename std::iterator_traits<const_pointer>::reference const_reference; typedef typename std::iterator_traits<pointer>::difference_type difference_type; typedef typename Config::size_type size_type; typedef list_iterator<list_impl, false> iterator; typedef list_iterator<list_impl, true> const_iterator; typedef std::reverse_iterator<iterator> reverse_iterator; typedef std::reverse_iterator<const_iterator> const_reverse_iterator; typedef typename real_value_traits::node_traits node_traits; typedef typename node_traits::node node; typedef typename node_traits::node_ptr node_ptr; typedef typename node_traits::const_node_ptr const_node_ptr; typedef circular_list_algorithms<node_traits> node_algorithms; static const bool constant_time_size = Config::constant_time_size; static const bool stateful_value_traits = detail::store_cont_ptr_on_it<list_impl>::value; /// @cond private: typedef detail::size_holder<constant_time_size, size_type> size_traits; //Non-copyable and non-moveable list_impl (const list_impl&); list_impl &operator =(const list_impl&); enum { safemode_or_autounlink = (int)real_value_traits::link_mode == (int)auto_unlink || (int)real_value_traits::link_mode == (int)safe_link }; //Constant-time size is incompatible with auto-unlink hooks! BOOST_STATIC_ASSERT(!(constant_time_size && ((int)real_value_traits::link_mode == (int)auto_unlink) )); //Const cast emulation for smart pointers static node_ptr uncast(const_node_ptr ptr) { //return node_ptr(detail::get_pointer(ptr))); return const_cast<node*>(detail::get_pointer(ptr)); } node_ptr get_root_node() { return node_ptr(&data_.root_plus_size_.root_); } const_node_ptr get_root_node() const { return const_node_ptr(&data_.root_plus_size_.root_); } struct root_plus_size : public size_traits { node root_; }; struct data_t : public value_traits { typedef typename list_impl::value_traits value_traits; data_t(const value_traits &val_traits) : value_traits(val_traits) {} root_plus_size root_plus_size_; } data_; size_traits &priv_size_traits() { return data_.root_plus_size_; } const size_traits &priv_size_traits() const { return data_.root_plus_size_; } const real_value_traits &get_real_value_traits(detail::bool_<false>) const { return data_; } const real_value_traits &get_real_value_traits(detail::bool_<true>) const { return data_.get_value_traits(*this); } real_value_traits &get_real_value_traits(detail::bool_<false>) { return data_; } real_value_traits &get_real_value_traits(detail::bool_<true>) { return data_.get_value_traits(*this); } /// @endcond public: const real_value_traits &get_real_value_traits() const { return this->get_real_value_traits(detail::bool_<external_value_traits>()); } real_value_traits &get_real_value_traits() { return this->get_real_value_traits(detail::bool_<external_value_traits>()); } //! <b>Effects</b>: constructs an empty list. //! //! <b>Complexity</b>: Constant //! //! <b>Throws</b>: If real_value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks). list_impl(const value_traits &v_traits = value_traits()) : data_(v_traits) { this->priv_size_traits().set_size(size_type(0)); node_algorithms::init_header(this->get_root_node()); } //! <b>Requires</b>: Dereferencing iterator must yield an lvalue of type value_type. //! //! <b>Effects</b>: Constructs a list equal to the range [first,last). //! //! <b>Complexity</b>: Linear in std::distance(b, e). No copy constructors are called. //! //! <b>Throws</b>: If real_value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks). template<class Iterator> list_impl(Iterator b, Iterator e, const value_traits &v_traits = value_traits()) : data_(v_traits) { this->priv_size_traits().set_size(size_type(0)); node_algorithms::init_header(this->get_root_node()); this->insert(this->end(), b, e); } //! <b>Effects</b>: If it's not a safe-mode or an auto-unlink value_type //! the destructor does nothing //! (ie. no code is generated). Otherwise it detaches all elements from this. //! In this case the objects in the list are not deleted (i.e. no destructors //! are called), but the hooks according to the ValueTraits template parameter //! are set to their default value. //! //! <b>Complexity</b>: Linear to the number of elements in the list, if //! it's a safe-mode or auto-unlink value . Otherwise constant. ~list_impl() { if(safemode_or_autounlink){ this->clear(); } } //! <b>Requires</b>: value must be an lvalue. //! //! <b>Effects</b>: Inserts the value in the back of the list. //! No copy constructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Does not affect the validity of iterators and references. void push_back(reference value) { node_ptr to_insert = get_real_value_traits().to_node_ptr(value); if(safemode_or_autounlink) BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::inited(to_insert)); node_algorithms::link_before(this->get_root_node(), to_insert); this->priv_size_traits().increment(); } //! <b>Requires</b>: value must be an lvalue. //! //! <b>Effects</b>: Inserts the value in the front of the list. //! No copy constructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Does not affect the validity of iterators and references. void push_front(reference value) { node_ptr to_insert = get_real_value_traits().to_node_ptr(value); if(safemode_or_autounlink) BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::inited(to_insert)); node_algorithms::link_before(node_traits::get_next(this->get_root_node()), to_insert); this->priv_size_traits().increment(); } //! <b>Effects</b>: Erases the last element of the list. //! No destructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Invalidates the iterators (but not the references) to the erased element. void pop_back() { return this->pop_back_and_dispose(detail::null_disposer()); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the last element of the list. //! No destructors are called. //! Disposer::operator()(pointer) is called for the removed element. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Invalidates the iterators to the erased element. template<class Disposer> void pop_back_and_dispose(Disposer disposer) { node_ptr to_erase = node_traits::get_previous(this->get_root_node()); node_algorithms::unlink(to_erase); this->priv_size_traits().decrement(); if(safemode_or_autounlink) node_algorithms::init(to_erase); disposer(get_real_value_traits().to_value_ptr(to_erase)); } //! <b>Effects</b>: Erases the first element of the list. //! No destructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Invalidates the iterators (but not the references) to the erased element. void pop_front() { return this->pop_front_and_dispose(detail::null_disposer()); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the first element of the list. //! No destructors are called. //! Disposer::operator()(pointer) is called for the removed element. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Invalidates the iterators to the erased element. template<class Disposer> void pop_front_and_dispose(Disposer disposer) { node_ptr to_erase = node_traits::get_next(this->get_root_node()); node_algorithms::unlink(to_erase); this->priv_size_traits().decrement(); if(safemode_or_autounlink) node_algorithms::init(to_erase); disposer(get_real_value_traits().to_value_ptr(to_erase)); } //! <b>Effects</b>: Returns a reference to the first element of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reference front() { return *get_real_value_traits().to_value_ptr(node_traits::get_next(this->get_root_node())); } //! <b>Effects</b>: Returns a const_reference to the first element of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reference front() const { return *get_real_value_traits().to_value_ptr(uncast(node_traits::get_next(this->get_root_node()))); } //! <b>Effects</b>: Returns a reference to the last element of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reference back() { return *get_real_value_traits().to_value_ptr(node_traits::get_previous(this->get_root_node())); } //! <b>Effects</b>: Returns a const_reference to the last element of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reference back() const { return *get_real_value_traits().to_value_ptr(uncast(node_traits::get_previous(this->get_root_node()))); } //! <b>Effects</b>: Returns an iterator to the first element contained in the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. iterator begin() { return iterator(node_traits::get_next(this->get_root_node()), this); } //! <b>Effects</b>: Returns a const_iterator to the first element contained in the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator begin() const { return this->cbegin(); } //! <b>Effects</b>: Returns a const_iterator to the first element contained in the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator cbegin() const { return const_iterator(node_traits::get_next(this->get_root_node()), this); } //! <b>Effects</b>: Returns an iterator to the end of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. iterator end() { return iterator(this->get_root_node(), this); } //! <b>Effects</b>: Returns a const_iterator to the end of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator end() const { return this->cend(); } //! <b>Effects</b>: Returns a constant iterator to the end of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator cend() const { return const_iterator(uncast(this->get_root_node()), this); } //! <b>Effects</b>: Returns a reverse_iterator pointing to the beginning //! of the reversed list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reverse_iterator rbegin() { return reverse_iterator(this->end()); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning //! of the reversed list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator rbegin() const { return this->crbegin(); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning //! of the reversed list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator crbegin() const { return const_reverse_iterator(end()); } //! <b>Effects</b>: Returns a reverse_iterator pointing to the end //! of the reversed list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reverse_iterator rend() { return reverse_iterator(begin()); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end //! of the reversed list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator rend() const { return this->crend(); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end //! of the reversed list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator crend() const { return const_reverse_iterator(this->begin()); } //! <b>Precondition</b>: end_iterator must be a valid end iterator //! of list. //! //! <b>Effects</b>: Returns a const reference to the list associated to the end iterator //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. static list_impl &container_from_end_iterator(iterator end_iterator) { return list_impl::priv_container_from_end_iterator(end_iterator); } //! <b>Precondition</b>: end_iterator must be a valid end const_iterator //! of list. //! //! <b>Effects</b>: Returns a const reference to the list associated to the end iterator //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. static const list_impl &container_from_end_iterator(const_iterator end_iterator) { return list_impl::priv_container_from_end_iterator(end_iterator); } //! <b>Effects</b>: Returns the number of the elements contained in the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements contained in the list. //! if constant-time size option is disabled. Constant time otherwise. //! //! <b>Note</b>: Does not affect the validity of iterators and references. size_type size() const { if(constant_time_size) return this->priv_size_traits().get_size(); else return node_algorithms::count(this->get_root_node()) - 1; } //! <b>Effects</b>: Returns true if the list contains no elements. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Does not affect the validity of iterators and references. bool empty() const { return node_algorithms::unique(this->get_root_node()); } //! <b>Effects</b>: Swaps the elements of x and *this. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Does not affect the validity of iterators and references. void swap(list_impl& other) { node_algorithms::swap_nodes(this->get_root_node(), other.get_root_node()); if(constant_time_size){ size_type backup = this->priv_size_traits().get_size(); this->priv_size_traits().set_size(other.priv_size_traits().get_size()); other.priv_size_traits().set_size(backup); } } //! <b>Effects</b>: Moves backwards all the elements, so that the first //! element becomes the second, the second becomes the third... //! the last element becomes the first one. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of shifts. //! //! <b>Note</b>: Does not affect the validity of iterators and references. void shift_backwards(size_type n = 1) { node_algorithms::move_forward(this->get_root_node(), n); } //! <b>Effects</b>: Moves forward all the elements, so that the second //! element becomes the first, the third becomes the second... //! the first element becomes the last one. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of shifts. //! //! <b>Note</b>: Does not affect the validity of iterators and references. void shift_forward(size_type n = 1) { node_algorithms::move_backwards(this->get_root_node(), n); } //! <b>Effects</b>: Erases the element pointed by i of the list. //! No destructors are called. //! //! <b>Returns</b>: the first element remaining beyond the removed element, //! or end() if no such element exists. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Invalidates the iterators (but not the references) to the //! erased element. iterator erase(iterator i) { return this->erase_and_dispose(i, detail::null_disposer()); } //! <b>Requires</b>: b and e must be valid iterators to elements in *this. //! //! <b>Effects</b>: Erases the element range pointed by b and e //! No destructors are called. //! //! <b>Returns</b>: the first element remaining beyond the removed elements, //! or end() if no such element exists. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of erased elements if it's a safe-mode //! or auto-unlink value, or constant-time size is enabled. Constant-time otherwise. //! //! <b>Note</b>: Invalidates the iterators (but not the references) to the //! erased elements. iterator erase(iterator b, iterator e) { if(safemode_or_autounlink || constant_time_size){ return this->erase_and_dispose(b, e, detail::null_disposer()); } else{ node_algorithms::unlink(b.pointed_node(), e.pointed_node()); return e; } } //! <b>Requires</b>: b and e must be valid iterators to elements in *this. //! n must be std::distance(b, e). //! //! <b>Effects</b>: Erases the element range pointed by b and e //! No destructors are called. //! //! <b>Returns</b>: the first element remaining beyond the removed elements, //! or end() if no such element exists. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of erased elements if it's a safe-mode //! or auto-unlink value is enabled. Constant-time otherwise. //! //! <b>Note</b>: Invalidates the iterators (but not the references) to the //! erased elements. iterator erase(iterator b, iterator e, difference_type n) { BOOST_INTRUSIVE_INVARIANT_ASSERT(std::distance(b, e) == difference_type(n)); if(safemode_or_autounlink || constant_time_size){ return this->erase_and_dispose(b, e, detail::null_disposer()); } else{ if(constant_time_size){ this->priv_size_traits().set_size(this->priv_size_traits().get_size() - n); } node_algorithms::unlink(b.pointed_node(), e.pointed_node()); return e; } } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the element pointed by i of the list. //! No destructors are called. //! Disposer::operator()(pointer) is called for the removed element. //! //! <b>Returns</b>: the first element remaining beyond the removed element, //! or end() if no such element exists. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Invalidates the iterators to the erased element. template <class Disposer> iterator erase_and_dispose(iterator i, Disposer disposer) { node_ptr to_erase(i.pointed_node()); ++i; node_algorithms::unlink(to_erase); this->priv_size_traits().decrement(); if(safemode_or_autounlink) node_algorithms::init(to_erase); disposer(this->get_real_value_traits().to_value_ptr(to_erase)); return i; } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the element range pointed by b and e //! No destructors are called. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Returns</b>: the first element remaining beyond the removed elements, //! or end() if no such element exists. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements erased. //! //! <b>Note</b>: Invalidates the iterators to the erased elements. template <class Disposer> iterator erase_and_dispose(iterator b, iterator e, Disposer disposer) { node_ptr bp(b.pointed_node()), ep(e.pointed_node()); node_algorithms::unlink(bp, ep); while(bp != ep){ node_ptr to_erase(bp); bp = node_traits::get_next(bp); if(safemode_or_autounlink) node_algorithms::init(to_erase); disposer(get_real_value_traits().to_value_ptr(to_erase)); this->priv_size_traits().decrement(); } return e; } //! <b>Effects</b>: Erases all the elements of the container. //! No destructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements of the list. //! if it's a safe-mode or auto-unlink value_type. Constant time otherwise. //! //! <b>Note</b>: Invalidates the iterators (but not the references) to the erased elements. void clear() { if(safemode_or_autounlink){ this->clear_and_dispose(detail::null_disposer()); } else{ node_algorithms::init_header(this->get_root_node()); this->priv_size_traits().set_size(size_type(0)); } } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all the elements of the container. //! No destructors are called. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements of the list. //! //! <b>Note</b>: Invalidates the iterators to the erased elements. template <class Disposer> void clear_and_dispose(Disposer disposer) { iterator it(this->begin()), itend(this->end()); while(it != itend){ node_ptr to_erase(it.pointed_node()); ++it; if(safemode_or_autounlink) node_algorithms::init(to_erase); disposer(get_real_value_traits().to_value_ptr(to_erase)); } node_algorithms::init_header(this->get_root_node()); this->priv_size_traits().set_size(0); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all the elements from *this //! calling Disposer::operator()(pointer), clones all the //! elements from src calling Cloner::operator()(const_reference ) //! and inserts them on *this. //! //! If cloner throws, all cloned elements are unlinked and disposed //! calling Disposer::operator()(pointer). //! //! <b>Complexity</b>: Linear to erased plus inserted elements. //! //! <b>Throws</b>: If cloner throws. Basic guarantee. template <class Cloner, class Disposer> void clone_from(const list_impl &src, Cloner cloner, Disposer disposer) { this->clear_and_dispose(disposer); detail::exception_disposer<list_impl, Disposer> rollback(*this, disposer); const_iterator b(src.begin()), e(src.end()); for(; b != e; ++b){ this->push_back(*cloner(*b)); } rollback.release(); } //! <b>Requires</b>: value must be an lvalue and p must be a valid iterator of *this. //! //! <b>Effects</b>: Inserts the value before the position pointed by p. //! //! <b>Returns</b>: An iterator to the inserted element. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant time. No copy constructors are called. //! //! <b>Note</b>: Does not affect the validity of iterators and references. iterator insert(iterator p, reference value) { node_ptr to_insert = this->get_real_value_traits().to_node_ptr(value); if(safemode_or_autounlink) BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::inited(to_insert)); node_algorithms::link_before(p.pointed_node(), to_insert); this->priv_size_traits().increment(); return iterator(to_insert, this); } //! <b>Requires</b>: Dereferencing iterator must yield //! an lvalue of type value_type and p must be a valid iterator of *this. //! //! <b>Effects</b>: Inserts the range pointed by b and e before the position p. //! No copy constructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements inserted. //! //! <b>Note</b>: Does not affect the validity of iterators and references. template<class Iterator> void insert(iterator p, Iterator b, Iterator e) { for (; b != e; ++b) this->insert(p, *b); } //! <b>Requires</b>: Dereferencing iterator must yield //! an lvalue of type value_type. //! //! <b>Effects</b>: Clears the list and inserts the range pointed by b and e. //! No destructors or copy constructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements inserted plus //! linear to the elements contained in the list if it's a safe-mode //! or auto-unlink value. //! Linear to the number of elements inserted in the list otherwise. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. template<class Iterator> void assign(Iterator b, Iterator e) { this->clear(); this->insert(this->end(), b, e); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Requires</b>: Dereferencing iterator must yield //! an lvalue of type value_type. //! //! <b>Effects</b>: Clears the list and inserts the range pointed by b and e. //! No destructors or copy constructors are called. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements inserted plus //! linear to the elements contained in the list. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. template<class Iterator, class Disposer> void dispose_and_assign(Disposer disposer, Iterator b, Iterator e) { this->clear_and_dispose(disposer); this->insert(this->end(), b, e); } //! <b>Requires</b>: p must be a valid iterator of *this. //! //! <b>Effects</b>: Transfers all the elements of list x to this list, before the //! the element pointed by p. No destructors or copy constructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Iterators of values obtained from list x now point to elements of //! this list. Iterators of this list and all the references are not invalidated. void splice(iterator p, list_impl& x) { if(!x.empty()){ size_traits &thist = this->priv_size_traits(); size_traits &xt = x.priv_size_traits(); node_algorithms::transfer (p.pointed_node(), x.begin().pointed_node(), x.end().pointed_node()); thist.set_size(thist.get_size() + xt.get_size()); xt.set_size(size_type(0)); } } //! <b>Requires</b>: p must be a valid iterator of *this. //! new_ele must point to an element contained in list x. //! //! <b>Effects</b>: Transfers the value pointed by new_ele, from list x to this list, //! before the the element pointed by p. No destructors or copy constructors are called. //! If p == new_ele or p == ++new_ele, this function is a null operation. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Iterators of values obtained from list x now point to elements of this //! list. Iterators of this list and all the references are not invalidated. void splice(iterator p, list_impl&x, iterator new_ele) { node_algorithms::transfer(p.pointed_node(), new_ele.pointed_node()); x.priv_size_traits().decrement(); this->priv_size_traits().increment(); } //! <b>Requires</b>: p must be a valid iterator of *this. //! start and end must point to elements contained in list x. //! //! <b>Effects</b>: Transfers the range pointed by start and end from list x to this list, //! before the the element pointed by p. No destructors or copy constructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements transferred //! if constant-time size option is enabled. Constant-time otherwise. //! //! <b>Note</b>: Iterators of values obtained from list x now point to elements of this //! list. Iterators of this list and all the references are not invalidated. void splice(iterator p, list_impl&x, iterator start, iterator end) { if(constant_time_size) this->splice(p, x, start, end, std::distance(start, end)); else this->splice(p, x, start, end, 1);//distance is a dummy value } //! <b>Requires</b>: p must be a valid iterator of *this. //! start and end must point to elements contained in list x. //! n == std::distance(start, end) //! //! <b>Effects</b>: Transfers the range pointed by start and end from list x to this list, //! before the the element pointed by p. No destructors or copy constructors are called. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Iterators of values obtained from list x now point to elements of this //! list. Iterators of this list and all the references are not invalidated. void splice(iterator p, list_impl&x, iterator start, iterator end, difference_type n) { if(n){ if(constant_time_size){ size_traits &thist = this->priv_size_traits(); size_traits &xt = x.priv_size_traits(); BOOST_INTRUSIVE_INVARIANT_ASSERT(n == std::distance(start, end)); node_algorithms::transfer(p.pointed_node(), start.pointed_node(), end.pointed_node()); thist.set_size(thist.get_size() + n); xt.set_size(xt.get_size() - n); } else{ node_algorithms::transfer(p.pointed_node(), start.pointed_node(), end.pointed_node()); } } } //! <b>Effects</b>: This function sorts the list *this according to std::less<value_type>. //! The sort is stable, that is, the relative order of equivalent elements is preserved. //! //! <b>Throws</b>: If real_value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks) //! or std::less<value_type> throws. Basic guarantee. //! //! <b>Notes</b>: Iterators and references are not invalidated. //! //! <b>Complexity</b>: The number of comparisons is approximately N log N, where N //! is the list's size. void sort() { this->sort(std::less<value_type>()); } //! <b>Requires</b>: p must be a comparison function that induces a strict weak ordering //! //! <b>Effects</b>: This function sorts the list *this according to p. The sort is //! stable, that is, the relative order of equivalent elements is preserved. //! //! <b>Throws</b>: If real_value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks) //! or the predicate throws. Basic guarantee. //! //! <b>Notes</b>: This won't throw if list_base_hook<> or //! list_member_hook are used. //! Iterators and references are not invalidated. //! //! <b>Complexity</b>: The number of comparisons is approximately N log N, where N //! is the list's size. template<class Predicate> void sort(Predicate p) { if(node_traits::get_next(this->get_root_node()) != node_traits::get_previous(this->get_root_node())){ list_impl carry; list_impl counter[64]; int fill = 0; while(!this->empty()){ carry.splice(carry.begin(), *this, this->begin()); int i = 0; while(i < fill && !counter[i].empty()) { carry.merge(counter[i++], p); } carry.swap(counter[i]); if(i == fill) ++fill; } for (int i = 1; i < fill; ++i) counter[i].merge(counter[i-1], p); this->swap(counter[fill-1]); } } //! <b>Effects</b>: This function removes all of x's elements and inserts them //! in order into *this according to std::less<value_type>. The merge is stable; //! that is, if an element from *this is equivalent to one from x, then the element //! from *this will precede the one from x. //! //! <b>Throws</b>: If std::less<value_type> throws. Basic guarantee. //! //! <b>Complexity</b>: This function is linear time: it performs at most //! size() + x.size() - 1 comparisons. //! //! <b>Note</b>: Iterators and references are not invalidated void merge(list_impl& x) { this->merge(x, std::less<value_type>()); } //! <b>Requires</b>: p must be a comparison function that induces a strict weak //! ordering and both *this and x must be sorted according to that ordering //! The lists x and *this must be distinct. //! //! <b>Effects</b>: This function removes all of x's elements and inserts them //! in order into *this. The merge is stable; that is, if an element from *this is //! equivalent to one from x, then the element from *this will precede the one from x. //! //! <b>Throws</b>: If the predicate throws. Basic guarantee. //! //! <b>Complexity</b>: This function is linear time: it performs at most //! size() + x.size() - 1 comparisons. //! //! <b>Note</b>: Iterators and references are not invalidated. template<class Predicate> void merge(list_impl& x, Predicate p) { iterator e(this->end()); iterator bx(x.begin()); iterator ex(x.end()); for (iterator b = this->begin(); b != e; ++b) { size_type n(0); iterator ix(bx); while(ix != ex && p(*ix, *b)){ ++ix; ++n; } this->splice(b, x, bx, ix, n); bx = ix; } //Now transfer the rest at the end of the container this->splice(e, x); } //! <b>Effects</b>: Reverses the order of elements in the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: This function is linear time. //! //! <b>Note</b>: Iterators and references are not invalidated void reverse() { node_algorithms::reverse(this->get_root_node()); } //! <b>Effects</b>: Removes all the elements that compare equal to value. //! No destructors are called. //! //! <b>Throws</b>: If std::equal_to<value_type> throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time. It performs exactly size() comparisons for equality. //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. void remove(const_reference value) { this->remove_if(detail::equal_to_value<const_reference>(value)); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Removes all the elements that compare equal to value. //! Disposer::operator()(pointer) is called for every removed element. //! //! <b>Throws</b>: If std::equal_to<value_type> throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time. It performs exactly size() comparisons for equality. //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. template<class Disposer> void remove_and_dispose(const_reference value, Disposer disposer) { this->remove_and_dispose_if(detail::equal_to_value<const_reference>(value), disposer); } //! <b>Effects</b>: Removes all the elements for which a specified //! predicate is satisfied. No destructors are called. //! //! <b>Throws</b>: If pred throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time. It performs exactly size() calls to the predicate. //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. template<class Pred> void remove_if(Pred pred) { this->remove_and_dispose_if(pred, detail::null_disposer()); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Removes all the elements for which a specified //! predicate is satisfied. //! Disposer::operator()(pointer) is called for every removed element. //! //! <b>Throws</b>: If pred throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time. It performs exactly size() comparisons for equality. //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. template<class Pred, class Disposer> void remove_and_dispose_if(Pred pred, Disposer disposer) { iterator cur(this->begin()); iterator last(this->end()); while(cur != last) { if(pred(*cur)){ cur = this->erase_and_dispose(cur, disposer); } else{ ++cur; } } } //! <b>Effects</b>: Removes adjacent duplicate elements or adjacent //! elements that are equal from the list. No destructors are called. //! //! <b>Throws</b>: If std::equal_to<value_type throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time (size()-1 comparisons calls to pred()). //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. void unique() { this->unique_and_dispose(std::equal_to<value_type>(), detail::null_disposer()); } //! <b>Effects</b>: Removes adjacent duplicate elements or adjacent //! elements that satisfy some binary predicate from the list. //! No destructors are called. //! //! <b>Throws</b>: If pred throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time (size()-1 comparisons equality comparisons). //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. template<class BinaryPredicate> void unique(BinaryPredicate pred) { this->unique_and_dispose(pred, detail::null_disposer()); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Removes adjacent duplicate elements or adjacent //! elements that are equal from the list. //! Disposer::operator()(pointer) is called for every removed element. //! //! <b>Throws</b>: If std::equal_to<value_type throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time (size()-1) comparisons equality comparisons. //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. template<class Disposer> void unique_and_dispose(Disposer disposer) { this->unique_and_dispose(std::equal_to<value_type>(), disposer); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Removes adjacent duplicate elements or adjacent //! elements that satisfy some binary predicate from the list. //! Disposer::operator()(pointer) is called for every removed element. //! //! <b>Throws</b>: If pred throws. Basic guarantee. //! //! <b>Complexity</b>: Linear time (size()-1) comparisons equality comparisons. //! //! <b>Note</b>: The relative order of elements that are not removed is unchanged, //! and iterators to elements that are not removed remain valid. template<class BinaryPredicate, class Disposer> void unique_and_dispose(BinaryPredicate pred, Disposer disposer) { iterator itend(this->end()); iterator cur(this->begin()); if(cur != itend){ iterator after(cur); ++after; while(after != itend){ if(pred(*cur, *after)){ after = this->erase_and_dispose(after, disposer); } else{ cur = after; ++after; } } } } //! <b>Requires</b>: value must be a reference to a value inserted in a list. //! //! <b>Effects</b>: This function returns a const_iterator pointing to the element //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant time. //! //! <b>Note</b>: Iterators and references are not invalidated. //! This static function is available only if the <i>value traits</i> //! is stateless. static iterator s_iterator_to(reference value) { BOOST_STATIC_ASSERT((!stateful_value_traits)); BOOST_INTRUSIVE_INVARIANT_ASSERT(!node_algorithms::inited(real_value_traits::to_node_ptr(value))); return iterator(real_value_traits::to_node_ptr(value), 0); } //! <b>Requires</b>: value must be a const reference to a value inserted in a list. //! //! <b>Effects</b>: This function returns an iterator pointing to the element. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant time. //! //! <b>Note</b>: Iterators and references are not invalidated. //! This static function is available only if the <i>value traits</i> //! is stateless. static const_iterator s_iterator_to(const_reference value) { BOOST_STATIC_ASSERT((!stateful_value_traits)); BOOST_INTRUSIVE_INVARIANT_ASSERT(!node_algorithms::inited(real_value_traits::to_node_ptr(const_cast<reference> (value)))); return const_iterator(real_value_traits::to_node_ptr(const_cast<reference> (value)), 0); } //! <b>Requires</b>: value must be a reference to a value inserted in a list. //! //! <b>Effects</b>: This function returns a const_iterator pointing to the element //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant time. //! //! <b>Note</b>: Iterators and references are not invalidated. iterator iterator_to(reference value) { BOOST_INTRUSIVE_INVARIANT_ASSERT(!node_algorithms::inited(real_value_traits::to_node_ptr(value))); return iterator(real_value_traits::to_node_ptr(value), this); } //! <b>Requires</b>: value must be a const reference to a value inserted in a list. //! //! <b>Effects</b>: This function returns an iterator pointing to the element. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant time. //! //! <b>Note</b>: Iterators and references are not invalidated. const_iterator iterator_to(const_reference value) const { BOOST_INTRUSIVE_INVARIANT_ASSERT(!node_algorithms::inited(real_value_traits::to_node_ptr(const_cast<reference> (value)))); return const_iterator(real_value_traits::to_node_ptr(const_cast<reference> (value)), this); } /// @cond private: static list_impl &priv_container_from_end_iterator(const const_iterator &end_iterator) { root_plus_size *r = detail::parent_from_member<root_plus_size, node> ( detail::get_pointer(end_iterator.pointed_node()), &root_plus_size::root_); data_t *d = detail::parent_from_member<data_t, root_plus_size> ( r, &data_t::root_plus_size_); list_impl *s = detail::parent_from_member<list_impl, data_t>(d, &list_impl::data_); return *s; } /// @endcond }; #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif inline bool operator< #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED (const list_impl<T, Options...> &x, const list_impl<T, Options...> &y) #else (const list_impl<Config> &x, const list_impl<Config> &y) #endif { return std::lexicographical_compare(x.begin(), x.end(), y.begin(), y.end()); } #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif bool operator== #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED (const list_impl<T, Options...> &x, const list_impl<T, Options...> &y) #else (const list_impl<Config> &x, const list_impl<Config> &y) #endif { typedef list_impl<Config> list_type; typedef typename list_type::const_iterator const_iterator; const bool C = list_type::constant_time_size; if(C && x.size() != y.size()){ return false; } const_iterator end1 = x.end(); const_iterator i1 = x.begin(); const_iterator i2 = y.begin(); if(C){ while (i1 != end1 && *i1 == *i2) { ++i1; ++i2; } return i1 == end1; } else{ const_iterator end2 = y.end(); while (i1 != end1 && i2 != end2 && *i1 == *i2) { ++i1; ++i2; } return i1 == end1 && i2 == end2; } } #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif inline bool operator!= #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED (const list_impl<T, Options...> &x, const list_impl<T, Options...> &y) #else (const list_impl<Config> &x, const list_impl<Config> &y) #endif { return !(x == y); } #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif inline bool operator> #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED (const list_impl<T, Options...> &x, const list_impl<T, Options...> &y) #else (const list_impl<Config> &x, const list_impl<Config> &y) #endif { return y < x; } #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif inline bool operator<= #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED (const list_impl<T, Options...> &x, const list_impl<T, Options...> &y) #else (const list_impl<Config> &x, const list_impl<Config> &y) #endif { return !(y < x); } #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif inline bool operator>= #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED (const list_impl<T, Options...> &x, const list_impl<T, Options...> &y) #else (const list_impl<Config> &x, const list_impl<Config> &y) #endif { return !(x < y); } #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class Config> #endif inline void swap #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED (list_impl<T, Options...> &x, list_impl<T, Options...> &y) #else (list_impl<Config> &x, list_impl<Config> &y) #endif { x.swap(y); } //! Helper metafunction to define a \c list that yields to the same type when the //! same options (either explicitly or implicitly) are used. #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class ...Options> #else template<class T, class O1 = none, class O2 = none, class O3 = none> #endif struct make_list { /// @cond typedef typename pack_options < list_defaults<T>, O1, O2, O3>::type packed_options; typedef typename detail::get_value_traits <T, typename packed_options::value_traits>::type value_traits; typedef list_impl < listopt < value_traits , typename packed_options::size_type , packed_options::constant_time_size > > implementation_defined; /// @endcond typedef implementation_defined type; }; #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED template<class T, class O1, class O2, class O3> class list : public make_list<T, O1, O2, O3>::type { typedef typename make_list <T, O1, O2, O3>::type Base; typedef typename Base::real_value_traits real_value_traits; //Assert if passed value traits are compatible with the type BOOST_STATIC_ASSERT((detail::is_same<typename real_value_traits::value_type, T>::value)); public: typedef typename Base::value_traits value_traits; typedef typename Base::iterator iterator; typedef typename Base::const_iterator const_iterator; list(const value_traits &v_traits = value_traits()) : Base(v_traits) {} template<class Iterator> list(Iterator b, Iterator e, const value_traits &v_traits = value_traits()) : Base(b, e, v_traits) {} static list &container_from_end_iterator(iterator end_iterator) { return static_cast<list &>(Base::container_from_end_iterator(end_iterator)); } static const list &container_from_end_iterator(const_iterator end_iterator) { return static_cast<const list &>(Base::container_from_end_iterator(end_iterator)); } }; #endif } //namespace intrusive } //namespace boost #include <boost/intrusive/detail/config_end.hpp> #endif //BOOST_INTRUSIVE_LIST_HPP