boost/container/slist.hpp
////////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2004-2011. 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/container for documentation. // ////////////////////////////////////////////////////////////////////////////// #ifndef BOOST_CONTAINER_SLIST_HPP #define BOOST_CONTAINER_SLIST_HPP #if (defined _MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif #include <boost/container/detail/config_begin.hpp> #include <boost/container/detail/workaround.hpp> #include <boost/container/container_fwd.hpp> #include <boost/move/move.hpp> #include <boost/intrusive/pointer_traits.hpp> #include <boost/container/detail/utilities.hpp> #include <boost/container/detail/mpl.hpp> #include <boost/type_traits/has_trivial_destructor.hpp> #include <boost/detail/no_exceptions_support.hpp> #include <boost/container/detail/node_alloc_holder.hpp> #include <boost/intrusive/slist.hpp> #if defined(BOOST_CONTAINER_PERFECT_FORWARDING) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED) //Preprocessor library to emulate perfect forwarding #else #include <boost/container/detail/preprocessor.hpp> #endif #include <stdexcept> #include <iterator> #include <utility> #include <memory> #include <functional> #include <algorithm> #ifdef BOOST_CONTAINER_DOXYGEN_INVOKED namespace boost { namespace container { #else namespace boost { namespace container { #endif /// @cond namespace container_detail { template<class VoidPointer> struct slist_hook { typedef typename container_detail::bi::make_slist_base_hook <container_detail::bi::void_pointer<VoidPointer>, container_detail::bi::link_mode<container_detail::bi::normal_link> >::type type; }; template <class T, class VoidPointer> struct slist_node : public slist_hook<VoidPointer>::type { slist_node() : m_data() {} #if defined(BOOST_CONTAINER_PERFECT_FORWARDING) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED) template<class ...Args> slist_node(Args &&...args) : m_data(boost::forward<Args>(args)...) {} #else //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING #define BOOST_PP_LOCAL_MACRO(n) \ template<BOOST_PP_ENUM_PARAMS(n, class P)> \ slist_node(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \ : m_data(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)) \ {} \ //! #define BOOST_PP_LOCAL_LIMITS (1, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS) #include BOOST_PP_LOCAL_ITERATE() #endif//#ifdef BOOST_CONTAINER_PERFECT_FORWARDING T m_data; }; template<class A> struct intrusive_slist_type { typedef boost::container::allocator_traits<A> allocator_traits_type; typedef typename allocator_traits_type::value_type value_type; typedef typename boost::intrusive::pointer_traits <typename allocator_traits_type::pointer>::template rebind_pointer<void>::type void_pointer; typedef typename container_detail::slist_node <value_type, void_pointer> node_type; typedef typename container_detail::bi::make_slist <node_type ,container_detail::bi::base_hook<typename slist_hook<void_pointer>::type> ,container_detail::bi::constant_time_size<true> , container_detail::bi::size_type <typename allocator_traits_type::size_type> >::type container_type; typedef container_type type ; }; } //namespace container_detail { /// @endcond //! An slist is a singly linked list: a list where each element is linked to the next //! element, but not to the previous element. That is, it is a Sequence that //! supports forward but not backward traversal, and (amortized) constant time //! insertion and removal of elements. Slists, like lists, have the important //! property that insertion and splicing do not invalidate iterators to list elements, //! and that even removal invalidates only the iterators that point to the elements //! that are removed. The ordering of iterators may be changed (that is, //! slist<T>::iterator might have a different predecessor or successor after a list //! operation than it did before), but the iterators themselves will not be invalidated //! or made to point to different elements unless that invalidation or mutation is explicit. //! //! The main difference between slist and list is that list's iterators are bidirectional //! iterators, while slist's iterators are forward iterators. This means that slist is //! less versatile than list; frequently, however, bidirectional iterators are //! unnecessary. You should usually use slist unless you actually need the extra //! functionality of list, because singly linked lists are smaller and faster than double //! linked lists. //! //! Important performance note: like every other Sequence, slist defines the member //! functions insert and erase. Using these member functions carelessly, however, can //! result in disastrously slow programs. The problem is that insert's first argument is //! an iterator p, and that it inserts the new element(s) before p. This means that //! insert must find the iterator just before p; this is a constant-time operation //! for list, since list has bidirectional iterators, but for slist it must find that //! iterator by traversing the list from the beginning up to p. In other words: //! insert and erase are slow operations anywhere but near the beginning of the slist. //! //! Slist provides the member functions insert_after and erase_after, which are constant //! time operations: you should always use insert_after and erase_after whenever //! possible. If you find that insert_after and erase_after aren't adequate for your //! needs, and that you often need to use insert and erase in the middle of the list, //! then you should probably use list instead of slist. #ifdef BOOST_CONTAINER_DOXYGEN_INVOKED template <class T, class A = std::allocator<T> > #else template <class T, class A> #endif class slist : protected container_detail::node_alloc_holder <A, typename container_detail::intrusive_slist_type<A>::type> { /// @cond typedef typename container_detail:: move_const_ref_type<T>::type insert_const_ref_type; typedef typename container_detail::intrusive_slist_type<A>::type Icont; typedef container_detail::node_alloc_holder<A, Icont> AllocHolder; typedef typename AllocHolder::NodePtr NodePtr; typedef slist <T, A> ThisType; typedef typename AllocHolder::NodeAlloc NodeAlloc; typedef typename AllocHolder::ValAlloc ValAlloc; typedef typename AllocHolder::Node Node; typedef container_detail::allocator_destroyer<NodeAlloc> Destroyer; typedef typename AllocHolder::allocator_v1 allocator_v1; typedef typename AllocHolder::allocator_v2 allocator_v2; typedef typename AllocHolder::alloc_version alloc_version; typedef boost::container::allocator_traits<A> allocator_traits_type; class equal_to_value { typedef typename AllocHolder::value_type value_type; const value_type &t_; public: equal_to_value(const value_type &t) : t_(t) {} bool operator()(const value_type &t)const { return t_ == t; } }; template<class Pred> struct ValueCompareToNodeCompare : Pred { ValueCompareToNodeCompare(Pred pred) : Pred(pred) {} bool operator()(const Node &a, const Node &b) const { return static_cast<const Pred&>(*this)(a.m_data, b.m_data); } bool operator()(const Node &a) const { return static_cast<const Pred&>(*this)(a.m_data); } }; /// @endcond public: //! The type of object, T, stored in the list typedef T value_type; //! Pointer to T typedef typename allocator_traits_type::pointer pointer; //! Const pointer to T typedef typename allocator_traits_type::const_pointer const_pointer; //! Reference to T typedef typename allocator_traits_type::reference reference; //! Const reference to T typedef typename allocator_traits_type::const_reference const_reference; //! An unsigned integral type typedef typename allocator_traits_type::size_type size_type; //! A signed integral type typedef typename allocator_traits_type::difference_type difference_type; //! The allocator type typedef A allocator_type; //! Non-standard extension: the stored allocator type typedef NodeAlloc stored_allocator_type; /// @cond private: BOOST_COPYABLE_AND_MOVABLE(slist) typedef difference_type list_difference_type; typedef pointer list_pointer; typedef const_pointer list_const_pointer; typedef reference list_reference; typedef const_reference list_const_reference; /// @endcond public: //! Const iterator used to iterate through a list. class const_iterator /// @cond : public std::iterator<std::forward_iterator_tag, value_type, list_difference_type, list_const_pointer, list_const_reference> { protected: typename Icont::iterator m_it; explicit const_iterator(typename Icont::iterator it) : m_it(it){} void prot_incr(){ ++m_it; } private: typename Icont::iterator get() { return this->m_it; } public: friend class slist<T, A>; typedef list_difference_type difference_type; //Constructors const_iterator() : m_it() {} //Pointer like operators const_reference operator*() const { return m_it->m_data; } const_pointer operator->() const { return const_pointer(&m_it->m_data); } //Increment / Decrement const_iterator& operator++() { prot_incr(); return *this; } const_iterator operator++(int) { typename Icont::iterator tmp = m_it; ++*this; return const_iterator(tmp); } //Comparison operators bool operator== (const const_iterator& r) const { return m_it == r.m_it; } bool operator!= (const const_iterator& r) const { return m_it != r.m_it; } } /// @endcond ; //! Iterator used to iterate through a list class iterator /// @cond : public const_iterator { private: explicit iterator(typename Icont::iterator it) : const_iterator(it) {} typename Icont::iterator get() { return this->m_it; } public: friend class slist<T, A>; typedef list_pointer pointer; typedef list_reference reference; //Constructors iterator(){} //Pointer like operators reference operator*() const { return this->m_it->m_data; } pointer operator->() const { return pointer(&this->m_it->m_data); } //Increment / Decrement iterator& operator++() { this->prot_incr(); return *this; } iterator operator++(int) { typename Icont::iterator tmp = this->m_it; ++*this; return iterator(tmp); } } /// @endcond ; public: //! <b>Effects</b>: Constructs a list taking the allocator as parameter. //! //! <b>Throws</b>: If allocator_type's copy constructor throws. //! //! <b>Complexity</b>: Constant. slist() : AllocHolder() {} //! <b>Effects</b>: Constructs a list taking the allocator as parameter. //! //! <b>Throws</b>: If allocator_type's copy constructor throws. //! //! <b>Complexity</b>: Constant. explicit slist(const allocator_type& a) : AllocHolder(a) {} explicit slist(size_type n) : AllocHolder(allocator_type()) { this->resize(n); } //! <b>Effects</b>: Constructs a list that will use a copy of allocator a //! and inserts n copies of value. //! //! <b>Throws</b>: If allocator_type's default constructor or copy constructor //! throws or T's default or copy constructor throws. //! //! <b>Complexity</b>: Linear to n. explicit slist(size_type n, const value_type& x, const allocator_type& a = allocator_type()) : AllocHolder(a) { this->priv_create_and_insert_nodes(this->before_begin(), n, x); } //! <b>Effects</b>: Constructs a list that will use a copy of allocator a //! and inserts a copy of the range [first, last) in the list. //! //! <b>Throws</b>: If allocator_type's default constructor or copy constructor //! throws or T's constructor taking an dereferenced InIt throws. //! //! <b>Complexity</b>: Linear to the range [first, last). template <class InpIt> slist(InpIt first, InpIt last, const allocator_type& a = allocator_type()) : AllocHolder(a) { this->insert_after(this->before_begin(), first, last); } //! <b>Effects</b>: Copy constructs a list. //! //! <b>Postcondition</b>: x == *this. //! //! <b>Throws</b>: If allocator_type's default constructor or copy constructor throws. //! //! <b>Complexity</b>: Linear to the elements x contains. slist(const slist& x) : AllocHolder(x) { this->insert_after(this->before_begin(), x.begin(), x.end()); } //! <b>Effects</b>: Move constructor. Moves mx's resources to *this. //! //! <b>Throws</b>: If allocator_type's copy constructor throws. //! //! <b>Complexity</b>: Constant. slist(BOOST_RV_REF(slist) x) : AllocHolder(boost::move(static_cast<AllocHolder&>(x))) {} //! <b>Effects</b>: Makes *this contain the same elements as x. //! //! <b>Postcondition</b>: this->size() == x.size(). *this contains a copy //! of each of x's elements. //! //! <b>Throws</b>: If memory allocation throws or T's copy constructor throws. //! //! <b>Complexity</b>: Linear to the number of elements in x. slist& operator= (BOOST_COPY_ASSIGN_REF(slist) x) { if (&x != this){ NodeAlloc &this_alloc = this->node_alloc(); const NodeAlloc &x_alloc = x.node_alloc(); container_detail::bool_<allocator_traits_type:: propagate_on_container_copy_assignment::value> flag; if(flag && this_alloc != x_alloc){ this->clear(); } this->AllocHolder::copy_assign_alloc(x); this->assign(x.begin(), x.end()); } return *this; } //! <b>Effects</b>: Makes *this contain the same elements as x. //! //! <b>Postcondition</b>: this->size() == x.size(). *this contains a copy //! of each of x's elements. //! //! <b>Throws</b>: If memory allocation throws or T's copy constructor throws. //! //! <b>Complexity</b>: Linear to the number of elements in x. slist& operator= (BOOST_RV_REF(slist) x) { if (&x != this){ NodeAlloc &this_alloc = this->node_alloc(); NodeAlloc &x_alloc = x.node_alloc(); //If allocators a re equal we can just swap pointers if(this_alloc == x_alloc){ //Destroy and swap pointers this->clear(); this->icont() = boost::move(x.icont()); //Move allocator if needed this->AllocHolder::move_assign_alloc(x); } //If unequal allocators, then do a one by one move else{ typedef typename std::iterator_traits<iterator>::iterator_category ItCat; this->assign( boost::make_move_iterator(x.begin()) , boost::make_move_iterator(x.end())); } } return *this; } //! <b>Effects</b>: Destroys the list. All stored values are destroyed //! and used memory is deallocated. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements. ~slist() {} //AllocHolder clears the slist //! <b>Effects</b>: Returns a copy of the internal allocator. //! //! <b>Throws</b>: If allocator's copy constructor throws. //! //! <b>Complexity</b>: Constant. allocator_type get_allocator() const { return allocator_type(this->node_alloc()); } const stored_allocator_type &get_stored_allocator() const { return this->node_alloc(); } stored_allocator_type &get_stored_allocator() { return this->node_alloc(); } public: //! <b>Effects</b>: Assigns the n copies of val to *this. //! //! <b>Throws</b>: If memory allocation throws or T's copy constructor throws. //! //! <b>Complexity</b>: Linear to n. void assign(size_type n, const T& val) { this->priv_fill_assign(n, val); } //! <b>Effects</b>: Assigns the range [first, last) to *this. //! //! <b>Throws</b>: If memory allocation throws or //! T's constructor from dereferencing InpIt throws. //! //! <b>Complexity</b>: Linear to n. template <class InpIt> void assign(InpIt first, InpIt last) { const bool aux_boolean = container_detail::is_convertible<InpIt, size_type>::value; typedef container_detail::bool_<aux_boolean> Result; this->priv_assign_dispatch(first, last, Result()); } //! <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(this->icont().begin()); } //! <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 an iterator to the end of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. iterator end() { return iterator(this->icont().end()); } //! <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 non-dereferenceable iterator that, //! when incremented, yields begin(). This iterator may be used //! as the argument toinsert_after, erase_after, etc. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. iterator before_begin() { return iterator(end()); } //! <b>Effects</b>: Returns a non-dereferenceable const_iterator //! that, when incremented, yields begin(). This iterator may be used //! as the argument toinsert_after, erase_after, etc. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator before_begin() const { return this->cbefore_begin(); } //! <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(this->non_const_icont().begin()); } //! <b>Effects</b>: Returns a const_iterator to the end of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator cend() const { return const_iterator(this->non_const_icont().end()); } //! <b>Effects</b>: Returns a non-dereferenceable const_iterator //! that, when incremented, yields begin(). This iterator may be used //! as the argument toinsert_after, erase_after, etc. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator cbefore_begin() const { return const_iterator(end()); } //! <b>Effects</b>: Returns the number of the elements contained in the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. size_type size() const { return this->icont().size(); } //! <b>Effects</b>: Returns the largest possible size of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. size_type max_size() const { return AllocHolder::max_size(); } //! <b>Effects</b>: Returns true if the list contains no elements. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. bool empty() const { return !this->size(); } //! <b>Effects</b>: Swaps the contents of *this and x. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements on *this and x. void swap(slist& x) { AllocHolder::swap(x); } //! <b>Requires</b>: !empty() //! //! <b>Effects</b>: Returns a reference to the first element //! from the beginning of the container. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reference front() { return *this->begin(); } //! <b>Requires</b>: !empty() //! //! <b>Effects</b>: Returns a const reference to the first element //! from the beginning of the container. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reference front() const { return *this->begin(); } //! <b>Effects</b>: Inserts a copy of t in the beginning of the list. //! //! <b>Throws</b>: If memory allocation throws or //! T's copy constructor throws. //! //! <b>Complexity</b>: Amortized constant time. void push_front(insert_const_ref_type x) { return priv_push_front(x); } #if defined(BOOST_NO_RVALUE_REFERENCES) && !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) void push_front(T &x) { push_front(const_cast<const T &>(x)); } template<class U> void push_front(const U &u , typename container_detail::enable_if_c<container_detail::is_same<T, U>::value && !::boost::has_move_emulation_enabled<U>::value >::type* =0) { return priv_push_front(u); } #endif //! <b>Effects</b>: Constructs a new element in the beginning of the list //! and moves the resources of t to this new element. //! //! <b>Throws</b>: If memory allocation throws. //! //! <b>Complexity</b>: Amortized constant time. void push_front(BOOST_RV_REF(T) x) { this->icont().push_front(*this->create_node(boost::move(x))); } //! <b>Effects</b>: Removes the first element from the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Amortized constant time. void pop_front() { this->icont().pop_front_and_dispose(Destroyer(this->node_alloc())); } //! <b>Returns</b>: The iterator to the element before i in the sequence. //! Returns the end-iterator, if either i is the begin-iterator or the //! sequence is empty. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements before i. iterator previous(iterator p) { return iterator(this->icont().previous(p.get())); } //! <b>Returns</b>: The const_iterator to the element before i in the sequence. //! Returns the end-const_iterator, if either i is the begin-const_iterator or //! the sequence is empty. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements before i. const_iterator previous(const_iterator p) { return const_iterator(this->icont().previous(p.get())); } //! <b>Requires</b>: p must be a valid iterator of *this. //! //! <b>Effects</b>: Inserts a copy of the value after the p pointed //! by prev_p. //! //! <b>Returns</b>: An iterator to the inserted element. //! //! <b>Throws</b>: If memory allocation throws or T's copy constructor throws. //! //! <b>Complexity</b>: Amortized constant time. //! //! <b>Note</b>: Does not affect the validity of iterators and references of //! previous values. iterator insert_after(const_iterator prev_pos, insert_const_ref_type x) { return this->priv_insert_after(prev_pos, x); } #if defined(BOOST_NO_RVALUE_REFERENCES) && !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) iterator insert_after(const_iterator position, T &x) { return this->insert_after(position, const_cast<const T &>(x)); } template<class U> iterator insert_after( const_iterator position, const U &u , typename container_detail::enable_if_c<container_detail::is_same<T, U>::value && !::boost::has_move_emulation_enabled<U>::value >::type* =0) { return this->priv_insert_after(position, u); } #endif //! <b>Requires</b>: prev_pos must be a valid iterator of *this. //! //! <b>Effects</b>: Inserts a move constructed copy object from the value after the //! p pointed by prev_pos. //! //! <b>Returns</b>: An iterator to the inserted element. //! //! <b>Throws</b>: If memory allocation throws. //! //! <b>Complexity</b>: Amortized constant time. //! //! <b>Note</b>: Does not affect the validity of iterators and references of //! previous values. iterator insert_after(const_iterator prev_pos, BOOST_RV_REF(value_type) x) { return iterator(this->icont().insert_after(prev_pos.get(), *this->create_node(boost::move(x)))); } //! <b>Requires</b>: prev_pos must be a valid iterator of *this. //! //! <b>Effects</b>: Inserts n copies of x after prev_pos. //! //! <b>Throws</b>: If memory allocation throws or T's copy constructor throws. //! //! <b>Complexity</b>: Linear to n. //! //! <b>Note</b>: Does not affect the validity of iterators and references of //! previous values. void insert_after(const_iterator prev_pos, size_type n, const value_type& x) { this->priv_create_and_insert_nodes(prev_pos, n, x); } //! <b>Requires</b>: prev_pos must be a valid iterator of *this. //! //! <b>Effects</b>: Inserts the range pointed by [first, last) //! after the p prev_pos. //! //! <b>Throws</b>: If memory allocation throws, T's constructor from a //! dereferenced InpIt throws. //! //! <b>Complexity</b>: Linear to the number of elements inserted. //! //! <b>Note</b>: Does not affect the validity of iterators and references of //! previous values. template <class InIter> void insert_after(const_iterator prev_pos, InIter first, InIter last) { const bool aux_boolean = container_detail::is_convertible<InIter, size_type>::value; typedef container_detail::bool_<aux_boolean> Result; this->priv_insert_after_range_dispatch(prev_pos, first, last, Result()); } //! <b>Requires</b>: p must be a valid iterator of *this. //! //! <b>Effects</b>: Insert a copy of x before p. //! //! <b>Throws</b>: If memory allocation throws or x's copy constructor throws. //! //! <b>Complexity</b>: Linear to the elements before p. iterator insert(const_iterator position, insert_const_ref_type x) { return this->priv_insert(position, x); } #if defined(BOOST_NO_RVALUE_REFERENCES) && !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) iterator insert(const_iterator position, T &x) { return this->insert(position, const_cast<const T &>(x)); } template<class U> iterator insert( const_iterator position, const U &u , typename container_detail::enable_if_c<container_detail::is_same<T, U>::value && !::boost::has_move_emulation_enabled<U>::value >::type* =0) { return this->priv_insert(position, u); } #endif //! <b>Requires</b>: p must be a valid iterator of *this. //! //! <b>Effects</b>: Insert a new element before p with mx's resources. //! //! <b>Throws</b>: If memory allocation throws. //! //! <b>Complexity</b>: Linear to the elements before p. iterator insert(const_iterator p, BOOST_RV_REF(value_type) x) { return this->insert_after(previous(p), boost::move(x)); } //! <b>Requires</b>: p must be a valid iterator of *this. //! //! <b>Effects</b>: Inserts n copies of x before p. //! //! <b>Throws</b>: If memory allocation throws or T's copy constructor throws. //! //! <b>Complexity</b>: Linear to n plus linear to the elements before p. void insert(const_iterator p, size_type n, const value_type& x) { return this->insert_after(previous(p), n, x); } //! <b>Requires</b>: p must be a valid iterator of *this. //! //! <b>Effects</b>: Insert a copy of the [first, last) range before p. //! //! <b>Throws</b>: If memory allocation throws, T's constructor from a //! dereferenced InpIt throws. //! //! <b>Complexity</b>: Linear to std::distance [first, last) plus //! linear to the elements before p. template <class InIter> void insert(const_iterator p, InIter first, InIter last) { return this->insert_after(previous(p), first, last); } #if defined(BOOST_CONTAINER_PERFECT_FORWARDING) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED) //! <b>Effects</b>: Inserts an object of type T constructed with //! std::forward<Args>(args)... in the front of the list //! //! <b>Throws</b>: If memory allocation throws or //! T's copy constructor throws. //! //! <b>Complexity</b>: Amortized constant time. template <class... Args> void emplace_front(Args&&... args) { this->emplace_after(this->cbefore_begin(), boost::forward<Args>(args)...); } //! <b>Effects</b>: Inserts an object of type T constructed with //! std::forward<Args>(args)... before p //! //! <b>Throws</b>: If memory allocation throws or //! T's in-place constructor throws. //! //! <b>Complexity</b>: Linear to the elements before p template <class... Args> iterator emplace(const_iterator p, Args&&... args) { return this->emplace_after(this->previous(p), boost::forward<Args>(args)...); } //! <b>Effects</b>: Inserts an object of type T constructed with //! std::forward<Args>(args)... after prev //! //! <b>Throws</b>: If memory allocation throws or //! T's in-place constructor throws. //! //! <b>Complexity</b>: Constant template <class... Args> iterator emplace_after(const_iterator prev, Args&&... args) { NodePtr pnode(AllocHolder::create_node(boost::forward<Args>(args)...)); return iterator(this->icont().insert_after(prev.get(), *pnode)); } #else //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING #define BOOST_PP_LOCAL_MACRO(n) \ BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >) \ void emplace_front(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \ { \ this->emplace(this->cbegin() \ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); \ } \ \ BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >) \ iterator emplace (const_iterator p \ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \ { \ return this->emplace_after \ (this->previous(p) \ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); \ } \ \ BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >) \ iterator emplace_after(const_iterator prev \ BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _)) \ { \ NodePtr pnode (AllocHolder::create_node \ (BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _))); \ return iterator(this->icont().insert_after(prev.get(), *pnode)); \ } \ //! #define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS) #include BOOST_PP_LOCAL_ITERATE() #endif //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING //! <b>Effects</b>: Erases the element after the element pointed by prev_pos //! of the list. //! //! <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>: Constant. //! //! <b>Note</b>: Does not invalidate iterators or references to non erased elements. iterator erase_after(const_iterator prev_pos) { return iterator(this->icont().erase_after_and_dispose(prev_pos.get(), Destroyer(this->node_alloc()))); } //! <b>Effects</b>: Erases the range (before_first, last) from //! the list. //! //! <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. //! //! <b>Note</b>: Does not invalidate iterators or references to non erased elements. iterator erase_after(const_iterator before_first, const_iterator last) { return iterator(this->icont().erase_after_and_dispose(before_first.get(), last.get(), Destroyer(this->node_alloc()))); } //! <b>Requires</b>: p must be a valid iterator of *this. //! //! <b>Effects</b>: Erases the element at p p. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements before p. iterator erase(const_iterator p) { return iterator(this->erase_after(previous(p))); } //! <b>Requires</b>: first and last must be valid iterator to elements in *this. //! //! <b>Effects</b>: Erases the elements pointed by [first, last). //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the distance between first and last plus //! linear to the elements before first. iterator erase(const_iterator first, const_iterator last) { return iterator(this->erase_after(previous(first), last)); } //! <b>Effects</b>: Inserts or erases elements at the end such that //! the size becomes n. New elements are copy constructed from x. //! //! <b>Throws</b>: If memory allocation throws, or T's copy constructor throws. //! //! <b>Complexity</b>: Linear to the difference between size() and new_size. void resize(size_type new_size, const T& x) { typename Icont::iterator end_n(this->icont().end()), cur(this->icont().before_begin()), cur_next; while (++(cur_next = cur) != end_n && new_size > 0){ --new_size; cur = cur_next; } if (cur_next != end_n) this->erase_after(const_iterator(cur), const_iterator(end_n)); else this->insert_after(const_iterator(cur), new_size, x); } //! <b>Effects</b>: Inserts or erases elements at the end such that //! the size becomes n. New elements are default constructed. //! //! <b>Throws</b>: If memory allocation throws, or T's copy constructor throws. //! //! <b>Complexity</b>: Linear to the difference between size() and new_size. void resize(size_type new_size) { typename Icont::iterator end_n(this->icont().end()), cur(this->icont().before_begin()), cur_next; size_type len = this->size(); size_type left = new_size; while (++(cur_next = cur) != end_n && left > 0){ --left; cur = cur_next; } if (cur_next != end_n){ this->erase_after(const_iterator(cur), const_iterator(end_n)); } else{ this->priv_create_and_insert_nodes(const_iterator(cur), new_size - len); } } //! <b>Effects</b>: Erases all the elements of the list. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements in the list. void clear() { this->icont().clear_and_dispose(Destroyer(this->node_alloc())); } //! <b>Requires</b>: p must point to an element contained //! by the list. x != *this //! //! <b>Effects</b>: Transfers all the elements of list x to this list, after the //! the element pointed by p. No destructors or copy constructors are called. //! //! <b>Throws</b>: std::runtime_error if this' allocator and x's allocator //! are not equal. //! //! <b>Complexity</b>: Linear to the elements in x. //! //! <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_after(const_iterator prev_pos, slist& x) { if((NodeAlloc&)*this == (NodeAlloc&)x){ this->icont().splice_after(prev_pos.get(), x.icont()); } else{ throw std::runtime_error("slist::splice called with unequal allocators"); } } //! <b>Requires</b>: prev_pos must be a valid iterator of this. //! i must point to an element contained in list x. //! //! <b>Effects</b>: Transfers the value pointed by i, from list x to this list, //! after the element pointed by prev_pos. //! If prev_pos == prev or prev_pos == ++prev, this function is a null operation. //! //! <b>Throws</b>: std::runtime_error if this' allocator and x's allocator //! are not equal. //! //! <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_after(const_iterator prev_pos, slist& x, const_iterator prev) { if((NodeAlloc&)*this == (NodeAlloc&)x){ this->icont().splice_after(prev_pos.get(), x.icont(), prev.get()); } else{ throw std::runtime_error("slist::splice called with unequal allocators"); } } //! <b>Requires</b>: prev_pos must be a valid iterator of this. //! before_first and before_last must be valid iterators of x. //! prev_pos must not be contained in [before_first, before_last) range. //! //! <b>Effects</b>: Transfers the range [before_first + 1, before_last + 1) //! from list x to this list, after the element pointed by prev_pos. //! //! <b>Throws</b>: std::runtime_error if this' allocator and x's allocator //! are not equal. //! //! <b>Complexity</b>: Linear to the number of transferred elements. //! //! <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_after(const_iterator prev_pos, slist& x, const_iterator before_first, const_iterator before_last) { if((NodeAlloc&)*this == (NodeAlloc&)x){ this->icont().splice_after (prev_pos.get(), x.icont(), before_first.get(), before_last.get()); } else{ throw std::runtime_error("slist::splice called with unequal allocators"); } } //! <b>Requires</b>: prev_pos must be a valid iterator of this. //! before_first and before_last must be valid iterators of x. //! prev_pos must not be contained in [before_first, before_last) range. //! n == std::distance(before_first, before_last) //! //! <b>Effects</b>: Transfers the range [before_first + 1, before_last + 1) //! from list x to this list, after the element pointed by prev_pos. //! //! <b>Throws</b>: std::runtime_error if this' allocator and x's allocator //! are not equal. //! //! <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_after(const_iterator prev_pos, slist& x, const_iterator before_first, const_iterator before_last, size_type n) { if((NodeAlloc&)*this == (NodeAlloc&)x){ this->icont().splice_after (prev_pos.get(), x.icont(), before_first.get(), before_last.get(), n); } else{ throw std::runtime_error("slist::splice called with unequal allocators"); } } //! <b>Requires</b>: p must point to an element contained //! by the list. x != *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>: std::runtime_error if this' allocator and x's allocator //! are not equal. //! //! <b>Complexity</b>: Linear in distance(begin(), p), and linear in x.size(). //! //! <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(const_iterator p, ThisType& x) { this->splice_after(this->previous(p), x); } //! <b>Requires</b>: p must point to an element contained //! by this list. i must point to an element contained in list x. //! //! <b>Effects</b>: Transfers the value pointed by i, from list x to this list, //! before the the element pointed by p. No destructors or copy constructors are called. //! If p == i or p == ++i, this function is a null operation. //! //! <b>Throws</b>: std::runtime_error if this' allocator and x's allocator //! are not equal. //! //! <b>Complexity</b>: Linear in distance(begin(), p), and in distance(x.begin(), i). //! //! <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(const_iterator p, slist& x, const_iterator i) { this->splice_after(previous(p), x, i); } //! <b>Requires</b>: p must point to an element contained //! by this list. first and last must point to elements contained in list x. //! //! <b>Effects</b>: Transfers the range pointed by first and last from list x to this list, //! before the the element pointed by p. No destructors or copy constructors are called. //! //! <b>Throws</b>: std::runtime_error if this' allocator and x's allocator //! are not equal. //! //! <b>Complexity</b>: Linear in distance(begin(), p), in distance(x.begin(), first), //! and in distance(first, last). //! //! <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(const_iterator p, slist& x, const_iterator first, const_iterator last) { this->splice_after(previous(p), x, previous(first), previous(last)); } //! <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() { this->icont().reverse(); } //! <b>Effects</b>: Removes all the elements that compare equal to value. //! //! <b>Throws</b>: Nothing. //! //! <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 T& value) { remove_if(equal_to_value(value)); } //! <b>Effects</b>: Removes all the elements for which a specified //! predicate is satisfied. //! //! <b>Throws</b>: If pred throws. //! //! <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) { typedef ValueCompareToNodeCompare<Pred> Predicate; this->icont().remove_and_dispose_if(Predicate(pred), Destroyer(this->node_alloc())); } //! <b>Effects</b>: Removes adjacent duplicate elements or adjacent //! elements that are equal from the list. //! //! <b>Throws</b>: Nothing. //! //! <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(value_equal()); } //! <b>Effects</b>: Removes adjacent duplicate elements or adjacent //! elements that satisfy some binary predicate from the list. //! //! <b>Throws</b>: If pred throws. //! //! <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 Pred> void unique(Pred pred) { typedef ValueCompareToNodeCompare<Pred> Predicate; this->icont().unique_and_dispose(Predicate(pred), Destroyer(this->node_alloc())); } //! <b>Requires</b>: 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 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>: Nothing. //! //! <b>Complexity</b>: This function is linear time: it performs at most //! size() + x.size() - 1 comparisons. void merge(slist & x) { this->merge(x, value_less()); } //! <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>: Nothing. //! //! <b>Complexity</b>: This function is linear time: it performs at most //! size() + x.size() - 1 comparisons. //! //! <b>Note</b>: Iterators and references to *this are not invalidated. template <class StrictWeakOrdering> void merge(slist& x, StrictWeakOrdering comp) { if((NodeAlloc&)*this == (NodeAlloc&)x){ this->icont().merge(x.icont(), ValueCompareToNodeCompare<StrictWeakOrdering>(comp)); } else{ throw std::runtime_error("list::merge called with unequal allocators"); } } //! <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>: Nothing. //! //! <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(value_less()); } //! <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>: Nothing. //! //! <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. template <class StrictWeakOrdering> void sort(StrictWeakOrdering comp) { // nothing if the slist has length 0 or 1. if (this->size() < 2) return; this->icont().sort(ValueCompareToNodeCompare<StrictWeakOrdering>(comp)); } /// @cond private: iterator priv_insert(const_iterator p, const value_type& x) { return this->insert_after(previous(p), x); } iterator priv_insert_after(const_iterator prev_pos, const value_type& x) { return iterator(this->icont().insert_after(prev_pos.get(), *this->create_node(x))); } void priv_push_front(const value_type &x) { this->icont().push_front(*this->create_node(x)); } //Iterator range version template<class InpIterator> void priv_create_and_insert_nodes (const_iterator prev, InpIterator beg, InpIterator end) { typedef typename std::iterator_traits<InpIterator>::iterator_category ItCat; priv_create_and_insert_nodes(prev, beg, end, alloc_version(), ItCat()); } template<class InpIterator> void priv_create_and_insert_nodes (const_iterator prev, InpIterator beg, InpIterator end, allocator_v1, std::input_iterator_tag) { for (; beg != end; ++beg){ this->icont().insert_after(prev.get(), *this->create_node_from_it(beg)); ++prev; } } template<class InpIterator> void priv_create_and_insert_nodes (const_iterator prev, InpIterator beg, InpIterator end, allocator_v2, std::input_iterator_tag) { //Just forward to the default one priv_create_and_insert_nodes(prev, beg, end, allocator_v1(), std::input_iterator_tag()); } class insertion_functor; friend class insertion_functor; class insertion_functor { Icont &icont_; typename Icont::const_iterator prev_; public: insertion_functor(Icont &icont, typename Icont::const_iterator prev) : icont_(icont), prev_(prev) {} void operator()(Node &n) { prev_ = this->icont_.insert_after(prev_, n); } }; template<class FwdIterator> void priv_create_and_insert_nodes (const_iterator prev, FwdIterator beg, FwdIterator end, allocator_v2, std::forward_iterator_tag) { //Optimized allocation and construction this->allocate_many_and_construct (beg, std::distance(beg, end), insertion_functor(this->icont(), prev.get())); } //Default constructed version void priv_create_and_insert_nodes(const_iterator prev, size_type n) { typedef default_construct_iterator<value_type, difference_type> default_iterator; this->priv_create_and_insert_nodes(prev, default_iterator(n), default_iterator()); } //Copy constructed version void priv_create_and_insert_nodes(const_iterator prev, size_type n, const T& x) { typedef constant_iterator<value_type, difference_type> cvalue_iterator; this->priv_create_and_insert_nodes(prev, cvalue_iterator(x, n), cvalue_iterator()); } //Dispatch to detect iterator range or integer overloads template <class InputIter> void priv_insert_dispatch(const_iterator prev, InputIter first, InputIter last, container_detail::false_) { this->priv_create_and_insert_nodes(prev, first, last); } template<class Integer> void priv_insert_dispatch(const_iterator prev, Integer n, Integer x, container_detail::true_) { this->priv_create_and_insert_nodes(prev, (size_type)n, x); } void priv_fill_assign(size_type n, const T& val) { iterator end_n(this->end()); iterator prev(this->before_begin()); iterator node(this->begin()); for ( ; node != end_n && n > 0 ; --n){ *node = val; prev = node; ++node; } if (n > 0) this->priv_create_and_insert_nodes(prev, n, val); else this->erase_after(prev, end_n); } template <class Int> void priv_assign_dispatch(Int n, Int val, container_detail::true_) { this->priv_fill_assign((size_type) n, (T)val); } template <class InpIt> void priv_assign_dispatch(InpIt first, InpIt last, container_detail::false_) { iterator end_n(this->end()); iterator prev(this->before_begin()); iterator node(this->begin()); while (node != end_n && first != last){ *node = *first; prev = node; ++node; ++first; } if (first != last) this->priv_create_and_insert_nodes(prev, first, last); else this->erase_after(prev, end_n); } template <class Int> void priv_insert_after_range_dispatch(const_iterator prev_pos, Int n, Int x, container_detail::true_) { this->priv_create_and_insert_nodes(prev_pos, (size_type)n, x); } template <class InIter> void priv_insert_after_range_dispatch(const_iterator prev_pos, InIter first, InIter last, container_detail::false_) { this->priv_create_and_insert_nodes(prev_pos, first, last); } //Functors for member algorithm defaults struct value_less { bool operator()(const value_type &a, const value_type &b) const { return a < b; } }; struct value_equal { bool operator()(const value_type &a, const value_type &b) const { return a == b; } }; struct value_equal_to_this { explicit value_equal_to_this(const value_type &ref) : m_ref(ref){} bool operator()(const value_type &val) const { return m_ref == val; } const value_type &m_ref; }; /// @endcond }; template <class T, class A> inline bool operator==(const slist<T,A>& x, const slist<T,A>& y) { if(x.size() != y.size()){ return false; } typedef typename slist<T,A>::const_iterator const_iterator; const_iterator end1 = x.end(); const_iterator i1 = x.begin(); const_iterator i2 = y.begin(); while (i1 != end1 && *i1 == *i2){ ++i1; ++i2; } return i1 == end1; } template <class T, class A> inline bool operator<(const slist<T,A>& sL1, const slist<T,A>& sL2) { return std::lexicographical_compare (sL1.begin(), sL1.end(), sL2.begin(), sL2.end()); } template <class T, class A> inline bool operator!=(const slist<T,A>& sL1, const slist<T,A>& sL2) { return !(sL1 == sL2); } template <class T, class A> inline bool operator>(const slist<T,A>& sL1, const slist<T,A>& sL2) { return sL2 < sL1; } template <class T, class A> inline bool operator<=(const slist<T,A>& sL1, const slist<T,A>& sL2) { return !(sL2 < sL1); } template <class T, class A> inline bool operator>=(const slist<T,A>& sL1, const slist<T,A>& sL2) { return !(sL1 < sL2); } template <class T, class A> inline void swap(slist<T,A>& x, slist<T,A>& y) { x.swap(y); } }} /// @cond namespace boost { /* //!has_trivial_destructor_after_move<> == true_type //!specialization for optimizations template <class T, class A> struct has_trivial_destructor_after_move<boost::container::slist<T, A> > { static const bool value = has_trivial_destructor<A>::value; }; */ namespace container { /// @endcond }} //namespace boost{ namespace container { // Specialization of insert_iterator so that insertions will be constant // time rather than linear time. ///@cond //Ummm, I don't like to define things in namespace std, but //there is no other way namespace std { template <class T, class A> class insert_iterator<boost::container::slist<T, A> > { protected: typedef boost::container::slist<T, A> Container; Container* container; typename Container::iterator iter; public: typedef Container container_type; typedef output_iterator_tag iterator_category; typedef void value_type; typedef void difference_type; typedef void pointer; typedef void reference; insert_iterator(Container& x, typename Container::iterator i, bool is_previous = false) : container(&x), iter(is_previous ? i : x.previous(i)){ } insert_iterator<Container>& operator=(const typename Container::value_type& value) { iter = container->insert_after(iter, value); return *this; } insert_iterator<Container>& operator*(){ return *this; } insert_iterator<Container>& operator++(){ return *this; } insert_iterator<Container>& operator++(int){ return *this; } }; } //namespace std; ///@endcond #include <boost/container/detail/config_end.hpp> #endif /* BOOST_CONTAINER_SLIST_HPP */