boost/intrusive/unordered_set.hpp
///////////////////////////////////////////////////////////////////////////// // // (C) Copyright Olaf Krzikalla 2004-2006. // (C) Copyright Ion Gaztanaga 2006-2009 // // 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_UNORDERED_SET_HPP #define BOOST_INTRUSIVE_UNORDERED_SET_HPP #include <boost/intrusive/detail/config_begin.hpp> #include <boost/intrusive/intrusive_fwd.hpp> #include <boost/intrusive/hashtable.hpp> #include <iterator> namespace boost { namespace intrusive { //! The class template unordered_set is an intrusive container, that mimics most of //! the interface of std::tr1::unordered_set as described in the C++ TR1. //! //! unordered_set is a semi-intrusive container: each object to be stored in the //! container must contain a proper hook, but the container also needs //! additional auxiliary memory to work: unordered_set needs a pointer to an array //! of type `bucket_type` to be passed in the constructor. This bucket array must //! have at least the same lifetime as the container. This makes the use of //! unordered_set more complicated than purely intrusive containers. //! `bucket_type` is default-constructible, copyable and assignable //! //! 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<>, \c size_type<>, \c hash<> and \c equal<> //! \c bucket_traits<>, power_2_buckets<> and cache_begin<>. //! //! unordered_set only provides forward iterators but it provides 4 iterator types: //! iterator and const_iterator to navigate through the whole container and //! local_iterator and const_local_iterator to navigate through the values //! stored in a single bucket. Local iterators are faster and smaller. //! //! It's not recommended to use non constant-time size unordered_sets because several //! key functions, like "empty()", become non-constant time functions. Non //! constant-time size unordered_sets are mainly provided to support auto-unlink hooks. //! //! unordered_set, unlike std::unordered_set, does not make automatic rehashings nor //! offers functions related to a load factor. Rehashing can be explicitly requested //! and the user must provide a new bucket array that will be used from that moment. //! //! Since no automatic rehashing is done, iterators are never invalidated when //! inserting or erasing elements. Iterators are only invalidated when rehasing. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) template<class T, class ...Options> #else template<class Config> #endif class unordered_set_impl { /// @cond private: typedef hashtable_impl<Config> table_type; //! This class is //! non-copyable unordered_set_impl (const unordered_set_impl&); //! This class is //! non-assignable unordered_set_impl &operator =(const unordered_set_impl&); typedef table_type implementation_defined; /// @endcond public: typedef typename implementation_defined::value_type value_type; typedef typename implementation_defined::value_traits value_traits; typedef typename implementation_defined::bucket_traits bucket_traits; typedef typename implementation_defined::pointer pointer; typedef typename implementation_defined::const_pointer const_pointer; typedef typename implementation_defined::reference reference; typedef typename implementation_defined::const_reference const_reference; typedef typename implementation_defined::difference_type difference_type; typedef typename implementation_defined::size_type size_type; typedef typename implementation_defined::key_type key_type; typedef typename implementation_defined::key_equal key_equal; typedef typename implementation_defined::hasher hasher; typedef typename implementation_defined::bucket_type bucket_type; typedef typename implementation_defined::bucket_ptr bucket_ptr; typedef typename implementation_defined::iterator iterator; typedef typename implementation_defined::const_iterator const_iterator; typedef typename implementation_defined::insert_commit_data insert_commit_data; typedef typename implementation_defined::local_iterator local_iterator; typedef typename implementation_defined::const_local_iterator const_local_iterator; typedef typename implementation_defined::node_traits node_traits; typedef typename implementation_defined::node node; typedef typename implementation_defined::node_ptr node_ptr; typedef typename implementation_defined::const_node_ptr const_node_ptr; typedef typename implementation_defined::node_algorithms node_algorithms; /// @cond private: table_type table_; /// @endcond public: //! <b>Requires</b>: buckets must not be being used by any other resource. //! //! <b>Effects</b>: Constructs an empty unordered_set_impl, storing a reference //! to the bucket array and copies of the hasher and equal functors. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks) //! or the copy constructor or invocation of Hash or Equal throws. //! //! <b>Notes</b>: buckets array must be disposed only after //! *this is disposed. unordered_set_impl( const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : table_(b_traits, hash_func, equal_func, v_traits) {} //! <b>Requires</b>: buckets must not be being used by any other resource //! and Dereferencing iterator must yield an lvalue of type value_type. //! //! <b>Effects</b>: Constructs an empty unordered_set and inserts elements from //! [b, e). //! //! <b>Complexity</b>: If N is std::distance(b, e): Average case is O(N) //! (with a good hash function and with buckets_len >= N),worst case O(N2). //! //! <b>Throws</b>: If value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks) //! or the copy constructor or invocation of hasher or key_equal throws. //! //! <b>Notes</b>: buckets array must be disposed only after //! *this is disposed. template<class Iterator> unordered_set_impl( Iterator b , Iterator e , const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : table_(b_traits, hash_func, equal_func, v_traits) { table_.insert_unique(b, e); } //! <b>Effects</b>: Detaches all elements from this. The objects in the unordered_set //! are not deleted (i.e. no destructors are called). //! //! <b>Complexity</b>: Linear to the number of elements in the unordered_set, if //! it's a safe-mode or auto-unlink value. Otherwise constant. //! //! <b>Throws</b>: Nothing. ~unordered_set_impl() {} //! <b>Effects</b>: Returns an iterator pointing to the beginning of the unordered_set. //! //! <b>Complexity</b>: Constant time if `cache_begin<>` is true. Amortized //! constant time with worst case (empty unordered_set) O(this->bucket_count()) //! //! <b>Throws</b>: Nothing. iterator begin() { return table_.begin(); } //! <b>Effects</b>: Returns a const_iterator pointing to the beginning //! of the unordered_set. //! //! <b>Complexity</b>: Constant time if `cache_begin<>` is true. Amortized //! constant time with worst case (empty unordered_set) O(this->bucket_count()) //! //! <b>Throws</b>: Nothing. const_iterator begin() const { return table_.begin(); } //! <b>Effects</b>: Returns a const_iterator pointing to the beginning //! of the unordered_set. //! //! <b>Complexity</b>: Constant time if `cache_begin<>` is true. Amortized //! constant time with worst case (empty unordered_set) O(this->bucket_count()) //! //! <b>Throws</b>: Nothing. const_iterator cbegin() const { return table_.cbegin(); } //! <b>Effects</b>: Returns an iterator pointing to the end of the unordered_set. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. iterator end() { return table_.end(); } //! <b>Effects</b>: Returns a const_iterator pointing to the end of the unordered_set. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. const_iterator end() const { return table_.end(); } //! <b>Effects</b>: Returns a const_iterator pointing to the end of the unordered_set. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. const_iterator cend() const { return table_.cend(); } //! <b>Effects</b>: Returns the hasher object used by the unordered_set. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If hasher copy-constructor throws. hasher hash_function() const { return table_.hash_function(); } //! <b>Effects</b>: Returns the key_equal object used by the unordered_set. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If key_equal copy-constructor throws. key_equal key_eq() const { return table_.key_eq(); } //! <b>Effects</b>: Returns true if the container is empty. //! //! <b>Complexity</b>: if constant-time size and cache_last options are disabled, //! average constant time (worst case, with empty() == true: O(this->bucket_count()). //! Otherwise constant. //! //! <b>Throws</b>: Nothing. bool empty() const { return table_.empty(); } //! <b>Effects</b>: Returns the number of elements stored in the unordered_set. //! //! <b>Complexity</b>: Linear to elements contained in *this if //! constant-time size option is enabled. Constant-time otherwise. //! //! <b>Throws</b>: Nothing. size_type size() const { return table_.size(); } //! <b>Requires</b>: the hasher and the equality function unqualified swap //! call should not throw. //! //! <b>Effects</b>: Swaps the contents of two unordered_sets. //! Swaps also the contained bucket array and equality and hasher functors. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the swap() call for the comparison or hash functors //! found using ADL throw. Basic guarantee. void swap(unordered_set_impl& other) { table_.swap(other.table_); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! Cloner should yield to nodes that compare equal and produce the same //! hash than the original node. //! //! <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. The hash function and the equality //! predicate are copied from the source. //! //! If store_hash option is true, this method does not use the hash function. //! //! If any operation 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 or hasher throw or hash or equality predicate copying //! throws. Basic guarantee. template <class Cloner, class Disposer> void clone_from(const unordered_set_impl &src, Cloner cloner, Disposer disposer) { table_.clone_from(src.table_, cloner, disposer); } //! <b>Requires</b>: value must be an lvalue //! //! <b>Effects</b>: Tries to inserts value into the unordered_set. //! //! <b>Returns</b>: If the value //! is not already present inserts it and returns a pair containing the //! iterator to the new value and true. If there is an equivalent value //! returns a pair containing an iterator to the already present value //! and false. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Strong guarantee. //! //! <b>Note</b>: Does not affect the validity of iterators and references. //! No copy-constructors are called. std::pair<iterator, bool> insert(reference value) { return table_.insert_unique(value); } //! <b>Requires</b>: Dereferencing iterator must yield an lvalue //! of type value_type. //! //! <b>Effects</b>: Equivalent to this->insert(t) for each element in [b, e). //! //! <b>Complexity</b>: Average case O(N), where N is std::distance(b, e). //! Worst case O(N*this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Basic guarantee. //! //! <b>Note</b>: Does not affect the validity of iterators and references. //! No copy-constructors are called. template<class Iterator> void insert(Iterator b, Iterator e) { table_.insert_unique(b, e); } //! <b>Requires</b>: "hasher" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hasher" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Checks if a value can be inserted in the unordered_set, using //! a user provided key instead of the value itself. //! //! <b>Returns</b>: If there is an equivalent value //! returns a pair containing an iterator to the already present value //! and false. If the value can be inserted returns true in the returned //! pair boolean and fills "commit_data" that is meant to be used with //! the "insert_commit" function. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If hasher or key_value_equal throw. Strong guarantee. //! //! <b>Notes</b>: This function is used to improve performance when constructing //! a value_type is expensive: if there is an equivalent value //! the constructed object must be discarded. Many times, the part of the //! node that is used to impose the hash or the equality is much cheaper to //! construct than the value_type and this function offers the possibility to //! use that the part to check if the insertion will be successful. //! //! If the check is successful, the user can construct the value_type and use //! "insert_commit" to insert the object in constant-time. //! //! "commit_data" remains valid for a subsequent "insert_commit" only if no more //! objects are inserted or erased from the unordered_set. //! //! After a successful rehashing insert_commit_data remains valid. template<class KeyType, class KeyHasher, class KeyValueEqual> std::pair<iterator, bool> insert_check (const KeyType &key, KeyHasher hasher, KeyValueEqual key_value_equal, insert_commit_data &commit_data) { return table_.insert_unique_check(key, hasher, key_value_equal, commit_data); } //! <b>Requires</b>: value must be an lvalue of type value_type. commit_data //! must have been obtained from a previous call to "insert_check". //! No objects should have been inserted or erased from the unordered_set between //! the "insert_check" that filled "commit_data" and the call to "insert_commit". //! //! <b>Effects</b>: Inserts the value in the unordered_set using the information obtained //! from the "commit_data" that a previous "insert_check" filled. //! //! <b>Returns</b>: An iterator to the newly inserted object. //! //! <b>Complexity</b>: Constant time. //! //! <b>Throws</b>: Nothing. //! //! <b>Notes</b>: This function has only sense if a "insert_check" has been //! previously executed to fill "commit_data". No value should be inserted or //! erased between the "insert_check" and "insert_commit" calls. //! //! After a successful rehashing insert_commit_data remains valid. iterator insert_commit(reference value, const insert_commit_data &commit_data) { return table_.insert_unique_commit(value, commit_data); } //! <b>Effects</b>: Erases the element pointed to by i. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased element. No destructors are called. iterator erase(const_iterator i) { return table_.erase(i); } //! <b>Effects</b>: Erases the range pointed to by b end e. //! //! <b>Complexity</b>: Average case O(std::distance(b, e)), //! worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. iterator erase(const_iterator b, const_iterator e) { return table_.erase(b, e); } //! <b>Effects</b>: Erases all the elements with the given value. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. size_type erase(const_reference value) { return table_.erase(value); } //! <b>Requires</b>: "hasher" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hasher" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Erases all the elements that have the same hash and //! compare equal with the given key. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If hash_func or equal_func throw. Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. template<class KeyType, class KeyHasher, class KeyValueEqual> size_type erase(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) { return table_.erase(key, hash_func, equal_func); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the element pointed to by i. //! Disposer::operator()(pointer) is called for the removed element. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators //! to the erased elements. template<class Disposer> iterator erase_and_dispose(const_iterator i, Disposer disposer /// @cond , typename detail::enable_if_c<!detail::is_convertible<Disposer, const_iterator>::value >::type * = 0 /// @endcond ) { return table_.erase_and_dispose(i, disposer); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the range pointed to by b end e. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Complexity</b>: Average case O(std::distance(b, e)), //! worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators //! to the erased elements. template<class Disposer> iterator erase_and_dispose(const_iterator b, const_iterator e, Disposer disposer) { return table_.erase_and_dispose(b, e, disposer); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all the elements with the given value. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. template<class Disposer> size_type erase_and_dispose(const_reference value, Disposer disposer) { return table_.erase_and_dispose(value, disposer); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all the elements with the given key. //! according to the comparison functor "equal_func". //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If hash_func or equal_func throw. Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators //! to the erased elements. template<class KeyType, class KeyHasher, class KeyValueEqual, class Disposer> size_type erase_and_dispose(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func, Disposer disposer) { return table_.erase_and_dispose(key, hash_func, equal_func, disposer); } //! <b>Effects</b>: Erases all of the elements. //! //! <b>Complexity</b>: Linear to the number of elements on the container. //! if it's a safe-mode or auto-unlink value_type. Constant time otherwise. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. void clear() { return table_.clear(); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all of the elements. //! //! <b>Complexity</b>: Linear to the number of elements on the container. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. template<class Disposer> void clear_and_dispose(Disposer disposer) { return table_.clear_and_dispose(disposer); } //! <b>Effects</b>: Returns the number of contained elements with the given value //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. size_type count(const_reference value) const { return table_.find(value) != end(); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "equal_func" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "equal_func" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Returns the number of contained elements with the given key //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If hash_func or equal_func throw. template<class KeyType, class KeyHasher, class KeyValueEqual> size_type count(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) const { return table_.find(key, hash_func, equal_func) != end(); } //! <b>Effects</b>: Finds an iterator to the first element is equal to //! "value" or end() if that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. iterator find(const_reference value) { return table_.find(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "equal_func" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "equal_func" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Finds an iterator to the first element whose key is //! "key" according to the given hasher and equality functor or end() if //! that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If hash_func or equal_func throw. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> iterator find(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) { return table_.find(key, hash_func, equal_func); } //! <b>Effects</b>: Finds a const_iterator to the first element whose key is //! "key" or end() if that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. const_iterator find(const_reference value) const { return table_.find(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "equal_func" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "equal_func" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Finds an iterator to the first element whose key is //! "key" according to the given hasher and equality functor or end() if //! that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If hash_func or equal_func throw. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> const_iterator find(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) const { return table_.find(key, hash_func, equal_func); } //! <b>Effects</b>: Returns a range containing all elements with values equivalent //! to value. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(value)). Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. std::pair<iterator,iterator> equal_range(const_reference value) { return table_.equal_range(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "equal_func" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "equal_func" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Returns a range containing all elements with equivalent //! keys. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(key, hash_func, hash_func)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If hash_func or the equal_func throw. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> std::pair<iterator,iterator> equal_range(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) { return table_.equal_range(key, hash_func, equal_func); } //! <b>Effects</b>: Returns a range containing all elements with values equivalent //! to value. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(value)). Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. std::pair<const_iterator, const_iterator> equal_range(const_reference value) const { return table_.equal_range(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "equal_func" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "equal_func" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Returns a range containing all elements with equivalent //! keys. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(key, hash_func, equal_func)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the hash_func or equal_func throw. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> std::pair<const_iterator, const_iterator> equal_range(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) const { return table_.equal_range(key, hash_func, equal_func); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid iterator belonging to the unordered_set //! that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the internal hash function throws. iterator iterator_to(reference value) { return table_.iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid const_iterator belonging to the //! unordered_set that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the internal hash function throws. const_iterator iterator_to(const_reference value) const { return table_.iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid local_iterator belonging to the unordered_set //! that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: This static function is available only if the <i>value traits</i> //! is stateless. static local_iterator s_local_iterator_to(reference value) { return table_type::s_local_iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid const_local_iterator belonging to //! the unordered_set that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: This static function is available only if the <i>value traits</i> //! is stateless. static const_local_iterator s_local_iterator_to(const_reference value) { return table_type::s_local_iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid local_iterator belonging to the unordered_set //! that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. local_iterator local_iterator_to(reference value) { return table_.local_iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid const_local_iterator belonging to //! the unordered_set that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. const_local_iterator local_iterator_to(const_reference value) const { return table_.local_iterator_to(value); } //! <b>Effects</b>: Returns the number of buckets passed in the constructor //! or the last rehash function. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. size_type bucket_count() const { return table_.bucket_count(); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns the number of elements in the nth bucket. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. size_type bucket_size(size_type n) const { return table_.bucket_size(n); } //! <b>Effects</b>: Returns the index of the bucket in which elements //! with keys equivalent to k would be found, if any such element existed. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the hash functor throws. //! //! <b>Note</b>: the return value is in the range [0, this->bucket_count()). size_type bucket(const value_type& k) const { return table_.bucket(k); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! <b>Effects</b>: Returns the index of the bucket in which elements //! with keys equivalent to k would be found, if any such element existed. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If hash_func throws. //! //! <b>Note</b>: the return value is in the range [0, this->bucket_count()). template<class KeyType, class KeyHasher> size_type bucket(const KeyType& k, KeyHasher hash_func) const { return table_.bucket(k, hash_func); } //! <b>Effects</b>: Returns the bucket array pointer passed in the constructor //! or the last rehash function. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. bucket_ptr bucket_pointer() const { return table_.bucket_pointer(); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a local_iterator pointing to the beginning //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. local_iterator begin(size_type n) { return table_.begin(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the beginning //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator begin(size_type n) const { return table_.begin(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the beginning //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator cbegin(size_type n) const { return table_.cbegin(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a local_iterator pointing to the end //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. local_iterator end(size_type n) { return table_.end(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the end //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator end(size_type n) const { return table_.end(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the end //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator cend(size_type n) const { return table_.cend(n); } //! <b>Requires</b>: new_buckets must be a pointer to a new bucket array //! or the same as the old bucket array. new_size is the length of the //! the array pointed by new_buckets. If new_buckets == this->bucket_pointer() //! n can be bigger or smaller than this->bucket_count(). //! //! <b>Effects</b>: Updates the internal reference with the new bucket erases //! the values from the old bucket and inserts then in the new one. //! //! If store_hash option is true, this method does not use the hash function. //! //! <b>Complexity</b>: Average case linear in this->size(), worst case quadratic. //! //! <b>Throws</b>: If the hasher functor throws. Basic guarantee. void rehash(const bucket_traits &new_bucket_traits) { table_.rehash(new_bucket_traits); } //! <b>Requires</b>: //! //! <b>Effects</b>: //! //! <b>Complexity</b>: //! //! <b>Throws</b>: //! //! <b>Note</b>: this method is only available if incremental<true> option is activated. bool incremental_rehash(bool grow = true) { return table_.incremental_rehash(grow); } //! <b>Note</b>: this method is only available if incremental<true> option is activated. bool incremental_rehash(const bucket_traits &new_bucket_traits) { return table_.incremental_rehash(new_bucket_traits); } //! <b>Requires</b>: //! //! <b>Effects</b>: //! //! <b>Complexity</b>: //! //! <b>Throws</b>: size_type split_count() const { return table_.split_count(); } //! <b>Effects</b>: Returns the nearest new bucket count optimized for //! the container that is bigger than n. This suggestion can be used //! to create bucket arrays with a size that will usually improve //! container's performance. If such value does not exist, the //! higher possible value is returned. //! //! <b>Complexity</b>: Amortized constant time. //! //! <b>Throws</b>: Nothing. static size_type suggested_upper_bucket_count(size_type n) { return table_type::suggested_upper_bucket_count(n); } //! <b>Effects</b>: Returns the nearest new bucket count optimized for //! the container that is smaller than n. This suggestion can be used //! to create bucket arrays with a size that will usually improve //! container's performance. If such value does not exist, the //! lower possible value is returned. //! //! <b>Complexity</b>: Amortized constant time. //! //! <b>Throws</b>: Nothing. static size_type suggested_lower_bucket_count(size_type n) { return table_type::suggested_lower_bucket_count(n); } }; //! Helper metafunction to define an \c unordered_set that yields to the same type when the //! same options (either explicitly or implicitly) are used. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class T, class ...Options> #else template<class T, class O1 = none, class O2 = none , class O3 = none, class O4 = none , class O5 = none, class O6 = none , class O7 = none, class O8 = none , class O9 = none, class O10= none > #endif struct make_unordered_set { /// @cond typedef unordered_set_impl < typename make_hashtable_opt <T, true, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3, O4, O5, O6, O7, O8, O9, O10 #else Options... #endif >::type > implementation_defined; /// @endcond typedef implementation_defined type; }; #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class T, class O1, class O2, class O3, class O4, class O5, class O6, class O7, class O8, class O9, class O10> #else template<class T, class ...Options> #endif class unordered_set : public make_unordered_set<T, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3, O4, O5, O6, O7, O8, O9, O10 #else Options... #endif >::type { typedef typename make_unordered_set <T, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3, O4, O5, O6, O7, O8, O9, O10 #else Options... #endif >::type Base; //Assert if passed value traits are compatible with the type BOOST_STATIC_ASSERT((detail::is_same<typename Base::value_traits::value_type, T>::value)); public: typedef typename Base::value_traits value_traits; typedef typename Base::bucket_traits bucket_traits; typedef typename Base::iterator iterator; typedef typename Base::const_iterator const_iterator; typedef typename Base::bucket_ptr bucket_ptr; typedef typename Base::size_type size_type; typedef typename Base::hasher hasher; typedef typename Base::key_equal key_equal; unordered_set ( const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : Base(b_traits, hash_func, equal_func, v_traits) {} template<class Iterator> unordered_set ( Iterator b , Iterator e , const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : Base(b, e, b_traits, hash_func, equal_func, v_traits) {} }; #endif //! The class template unordered_multiset is an intrusive container, that mimics most of //! the interface of std::tr1::unordered_multiset as described in the C++ TR1. //! //! unordered_multiset is a semi-intrusive container: each object to be stored in the //! container must contain a proper hook, but the container also needs //! additional auxiliary memory to work: unordered_multiset needs a pointer to an array //! of type `bucket_type` to be passed in the constructor. This bucket array must //! have at least the same lifetime as the container. This makes the use of //! unordered_multiset more complicated than purely intrusive containers. //! `bucket_type` is default-constructible, copyable and assignable //! //! 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<>, \c size_type<>, \c hash<> and \c equal<> //! \c bucket_traits<>, power_2_buckets<> and cache_begin<>. //! //! unordered_multiset only provides forward iterators but it provides 4 iterator types: //! iterator and const_iterator to navigate through the whole container and //! local_iterator and const_local_iterator to navigate through the values //! stored in a single bucket. Local iterators are faster and smaller. //! //! It's not recommended to use non constant-time size unordered_multisets because several //! key functions, like "empty()", become non-constant time functions. Non //! constant-time size unordered_multisets are mainly provided to support auto-unlink hooks. //! //! unordered_multiset, unlike std::unordered_set, does not make automatic rehashings nor //! offers functions related to a load factor. Rehashing can be explicitly requested //! and the user must provide a new bucket array that will be used from that moment. //! //! Since no automatic rehashing is done, iterators are never invalidated when //! inserting or erasing elements. Iterators are only invalidated when rehasing. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) template<class T, class ...Options> #else template<class Config> #endif class unordered_multiset_impl { /// @cond private: typedef hashtable_impl<Config> table_type; /// @endcond //! This class is //! non-copyable unordered_multiset_impl (const unordered_multiset_impl&); //! This class is //! non-assignable unordered_multiset_impl &operator =(const unordered_multiset_impl&); typedef table_type implementation_defined; public: typedef typename implementation_defined::value_type value_type; typedef typename implementation_defined::value_traits value_traits; typedef typename implementation_defined::bucket_traits bucket_traits; typedef typename implementation_defined::pointer pointer; typedef typename implementation_defined::const_pointer const_pointer; typedef typename implementation_defined::reference reference; typedef typename implementation_defined::const_reference const_reference; typedef typename implementation_defined::difference_type difference_type; typedef typename implementation_defined::size_type size_type; typedef typename implementation_defined::key_type key_type; typedef typename implementation_defined::key_equal key_equal; typedef typename implementation_defined::hasher hasher; typedef typename implementation_defined::bucket_type bucket_type; typedef typename implementation_defined::bucket_ptr bucket_ptr; typedef typename implementation_defined::iterator iterator; typedef typename implementation_defined::const_iterator const_iterator; typedef typename implementation_defined::insert_commit_data insert_commit_data; typedef typename implementation_defined::local_iterator local_iterator; typedef typename implementation_defined::const_local_iterator const_local_iterator; typedef typename implementation_defined::node_traits node_traits; typedef typename implementation_defined::node node; typedef typename implementation_defined::node_ptr node_ptr; typedef typename implementation_defined::const_node_ptr const_node_ptr; typedef typename implementation_defined::node_algorithms node_algorithms; /// @cond private: table_type table_; /// @endcond public: //! <b>Requires</b>: buckets must not be being used by any other resource. //! //! <b>Effects</b>: Constructs an empty unordered_multiset, storing a reference //! to the bucket array and copies of the hasher and equal functors. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks) //! or the copy constructor or invocation of Hash or Equal throws. //! //! <b>Notes</b>: buckets array must be disposed only after //! *this is disposed. unordered_multiset_impl ( const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : table_(b_traits, hash_func, equal_func, v_traits) {} //! <b>Requires</b>: buckets must not be being used by any other resource //! and Dereferencing iterator must yield an lvalue of type value_type. //! //! <b>Effects</b>: Constructs an empty unordered_multiset and inserts elements from //! [b, e). //! //! <b>Complexity</b>: If N is std::distance(b, e): Average case is O(N) //! (with a good hash function and with buckets_len >= N),worst case O(N2). //! //! <b>Throws</b>: If value_traits::node_traits::node //! constructor throws (this does not happen with predefined Boost.Intrusive hooks) //! or the copy constructor or invocation of hasher or key_equal throws. //! //! <b>Notes</b>: buckets array must be disposed only after //! *this is disposed. template<class Iterator> unordered_multiset_impl ( Iterator b , Iterator e , const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : table_(b_traits, hash_func, equal_func, v_traits) { table_.insert_equal(b, e); } //! <b>Effects</b>: Detaches all elements from this. The objects in the unordered_multiset //! are not deleted (i.e. no destructors are called). //! //! <b>Complexity</b>: Linear to the number of elements in the unordered_multiset, if //! it's a safe-mode or auto-unlink value. Otherwise constant. //! //! <b>Throws</b>: Nothing. ~unordered_multiset_impl() {} //! <b>Effects</b>: Returns an iterator pointing to the beginning of the unordered_multiset. //! //! <b>Complexity</b>: Constant time if `cache_begin<>` is true. Amortized //! constant time with worst case (empty unordered_set) O(this->bucket_count()) //! //! <b>Throws</b>: Nothing. iterator begin() { return table_.begin(); } //! <b>Effects</b>: Returns a const_iterator pointing to the beginning //! of the unordered_multiset. //! //! <b>Complexity</b>: Constant time if `cache_begin<>` is true. Amortized //! constant time with worst case (empty unordered_set) O(this->bucket_count()) //! //! <b>Throws</b>: Nothing. const_iterator begin() const { return table_.begin(); } //! <b>Effects</b>: Returns a const_iterator pointing to the beginning //! of the unordered_multiset. //! //! <b>Complexity</b>: Constant time if `cache_begin<>` is true. Amortized //! constant time with worst case (empty unordered_set) O(this->bucket_count()) //! //! <b>Throws</b>: Nothing. const_iterator cbegin() const { return table_.cbegin(); } //! <b>Effects</b>: Returns an iterator pointing to the end of the unordered_multiset. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. iterator end() { return table_.end(); } //! <b>Effects</b>: Returns a const_iterator pointing to the end of the unordered_multiset. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. const_iterator end() const { return table_.end(); } //! <b>Effects</b>: Returns a const_iterator pointing to the end of the unordered_multiset. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. const_iterator cend() const { return table_.cend(); } //! <b>Effects</b>: Returns the hasher object used by the unordered_set. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If hasher copy-constructor throws. hasher hash_function() const { return table_.hash_function(); } //! <b>Effects</b>: Returns the key_equal object used by the unordered_multiset. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If key_equal copy-constructor throws. key_equal key_eq() const { return table_.key_eq(); } //! <b>Effects</b>: Returns true if the container is empty. //! //! <b>Complexity</b>: if constant-time size and cache_last options are disabled, //! average constant time (worst case, with empty() == true: O(this->bucket_count()). //! Otherwise constant. //! //! <b>Throws</b>: Nothing. bool empty() const { return table_.empty(); } //! <b>Effects</b>: Returns the number of elements stored in the unordered_multiset. //! //! <b>Complexity</b>: Linear to elements contained in *this if //! constant-time size option is enabled. Constant-time otherwise. //! //! <b>Throws</b>: Nothing. size_type size() const { return table_.size(); } //! <b>Requires</b>: the hasher and the equality function unqualified swap //! call should not throw. //! //! <b>Effects</b>: Swaps the contents of two unordered_multisets. //! Swaps also the contained bucket array and equality and hasher functors. //! //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the swap() call for the comparison or hash functors //! found using ADL throw. Basic guarantee. void swap(unordered_multiset_impl& other) { table_.swap(other.table_); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! Cloner should yield to nodes that compare equal and produce the same //! hash than the original node. //! //! <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. The hash function and the equality //! predicate are copied from the source. //! //! If store_hash option is true, this method does not use the hash function. //! //! If any operation 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 or hasher throw or hash or equality predicate copying //! throws. Basic guarantee. template <class Cloner, class Disposer> void clone_from(const unordered_multiset_impl &src, Cloner cloner, Disposer disposer) { table_.clone_from(src.table_, cloner, disposer); } //! <b>Requires</b>: value must be an lvalue //! //! <b>Effects</b>: Inserts value into the unordered_multiset. //! //! <b>Returns</b>: An iterator to the new inserted value. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Strong guarantee. //! //! <b>Note</b>: Does not affect the validity of iterators and references. //! No copy-constructors are called. iterator insert(reference value) { return table_.insert_equal(value); } //! <b>Requires</b>: Dereferencing iterator must yield an lvalue //! of type value_type. //! //! <b>Effects</b>: Equivalent to this->insert(t) for each element in [b, e). //! //! <b>Complexity</b>: Average case is O(N), where N is the //! size of the range. //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Basic guarantee. //! //! <b>Note</b>: Does not affect the validity of iterators and references. //! No copy-constructors are called. template<class Iterator> void insert(Iterator b, Iterator e) { table_.insert_equal(b, e); } //! <b>Effects</b>: Erases the element pointed to by i. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased element. No destructors are called. iterator erase(const_iterator i) { return table_.erase(i); } //! <b>Effects</b>: Erases the range pointed to by b end e. //! //! <b>Complexity</b>: Average case O(std::distance(b, e)), //! worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. iterator erase(const_iterator b, const_iterator e) { return table_.erase(b, e); } //! <b>Effects</b>: Erases all the elements with the given value. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. size_type erase(const_reference value) { return table_.erase(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Erases all the elements that have the same hash and //! compare equal with the given key. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the hash_func or the equal_func functors throws. //! Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. template<class KeyType, class KeyHasher, class KeyValueEqual> size_type erase(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) { return table_.erase(key, hash_func, equal_func); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the element pointed to by i. //! Disposer::operator()(pointer) is called for the removed element. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators //! to the erased elements. template<class Disposer> iterator erase_and_dispose(const_iterator i, Disposer disposer /// @cond , typename detail::enable_if_c<!detail::is_convertible<Disposer, const_iterator>::value >::type * = 0 /// @endcond ) { return table_.erase_and_dispose(i, disposer); } #if !defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) template<class Disposer> iterator erase_and_dispose(const_iterator i, Disposer disposer) { return this->erase_and_dispose(const_iterator(i), disposer); } #endif //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases the range pointed to by b end e. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Complexity</b>: Average case O(std::distance(b, e)), //! worst case O(this->size()). //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators //! to the erased elements. template<class Disposer> iterator erase_and_dispose(const_iterator b, const_iterator e, Disposer disposer) { return table_.erase_and_dispose(b, e, disposer); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all the elements with the given value. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. template<class Disposer> size_type erase_and_dispose(const_reference value, Disposer disposer) { return table_.erase_and_dispose(value, disposer); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all the elements with the given key. //! according to the comparison functor "equal_func". //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Returns</b>: The number of erased elements. //! //! <b>Complexity</b>: Average case O(this->count(value)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If hash_func or equal_func throw. Basic guarantee. //! //! <b>Note</b>: Invalidates the iterators //! to the erased elements. template<class KeyType, class KeyHasher, class KeyValueEqual, class Disposer> size_type erase_and_dispose(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func, Disposer disposer) { return table_.erase_and_dispose(key, hash_func, equal_func, disposer); } //! <b>Effects</b>: Erases all the elements of the container. //! //! <b>Complexity</b>: Linear to the number of elements on the container. //! if it's a safe-mode or auto-unlink value_type. Constant time otherwise. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. void clear() { return table_.clear(); } //! <b>Requires</b>: Disposer::operator()(pointer) shouldn't throw. //! //! <b>Effects</b>: Erases all the elements of the container. //! //! <b>Complexity</b>: Linear to the number of elements on the container. //! Disposer::operator()(pointer) is called for the removed elements. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: Invalidates the iterators (but not the references) //! to the erased elements. No destructors are called. template<class Disposer> void clear_and_dispose(Disposer disposer) { return table_.clear_and_dispose(disposer); } //! <b>Effects</b>: Returns the number of contained elements with the given key //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. size_type count(const_reference value) const { return table_.count(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Returns the number of contained elements with the given key //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. template<class KeyType, class KeyHasher, class KeyValueEqual> size_type count(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) const { return table_.count(key, hash_func, equal_func); } //! <b>Effects</b>: Finds an iterator to the first element whose value is //! "value" or end() if that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. iterator find(const_reference value) { return table_.find(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Finds an iterator to the first element whose key is //! "key" according to the given hasher and equality functor or end() if //! that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> iterator find(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) { return table_.find(key, hash_func, equal_func); } //! <b>Effects</b>: Finds a const_iterator to the first element whose key is //! "key" or end() if that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. const_iterator find(const_reference value) const { return table_.find(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Finds an iterator to the first element whose key is //! "key" according to the given hasher and equality functor or end() if //! that element does not exist. //! //! <b>Complexity</b>: Average case O(1), worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> const_iterator find(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) const { return table_.find(key, hash_func, equal_func); } //! <b>Effects</b>: Returns a range containing all elements with values equivalent //! to value. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(value)). Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. std::pair<iterator,iterator> equal_range(const_reference value) { return table_.equal_range(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Returns a range containing all elements with equivalent //! keys. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(key, hash_func, equal_func)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> std::pair<iterator,iterator> equal_range (const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) { return table_.equal_range(key, hash_func, equal_func); } //! <b>Effects</b>: Returns a range containing all elements with values equivalent //! to value. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(value)). Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. std::pair<const_iterator, const_iterator> equal_range(const_reference value) const { return table_.equal_range(value); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! "key_value_equal" must be a equality function that induces //! the same equality as key_equal. The difference is that //! "key_value_equal" compares an arbitrary key with the contained values. //! //! <b>Effects</b>: Returns a range containing all elements with equivalent //! keys. Returns std::make_pair(this->end(), this->end()) if no such //! elements exist. //! //! <b>Complexity</b>: Average case O(this->count(key, hash_func, equal_func)). //! Worst case O(this->size()). //! //! <b>Throws</b>: If the internal hasher or the equality functor throws. //! //! <b>Note</b>: This function is used when constructing a value_type //! is expensive and the value_type can be compared with a cheaper //! key type. Usually this key is part of the value_type. template<class KeyType, class KeyHasher, class KeyValueEqual> std::pair<const_iterator, const_iterator> equal_range(const KeyType& key, KeyHasher hash_func, KeyValueEqual equal_func) const { return table_.equal_range(key, hash_func, equal_func); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_multiset of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid iterator belonging to the unordered_multiset //! that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the hash function throws. iterator iterator_to(reference value) { return table_.iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_multiset of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid const_iterator belonging to the //! unordered_multiset that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the hash function throws. const_iterator iterator_to(const_reference value) const { return table_.iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid local_iterator belonging to the unordered_set //! that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: This static function is available only if the <i>value traits</i> //! is stateless. static local_iterator s_local_iterator_to(reference value) { return table_type::s_local_iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid const_local_iterator belonging to //! the unordered_set that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: This static function is available only if the <i>value traits</i> //! is stateless. static const_local_iterator s_local_iterator_to(const_reference value) { return table_type::s_local_iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid local_iterator belonging to the unordered_set //! that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. local_iterator local_iterator_to(reference value) { return table_.local_iterator_to(value); } //! <b>Requires</b>: value must be an lvalue and shall be in a unordered_set of //! appropriate type. Otherwise the behavior is undefined. //! //! <b>Effects</b>: Returns: a valid const_local_iterator belonging to //! the unordered_set that points to the value //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. const_local_iterator local_iterator_to(const_reference value) const { return table_.local_iterator_to(value); } //! <b>Effects</b>: Returns the number of buckets passed in the constructor //! or the last rehash function. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. size_type bucket_count() const { return table_.bucket_count(); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns the number of elements in the nth bucket. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. size_type bucket_size(size_type n) const { return table_.bucket_size(n); } //! <b>Effects</b>: Returns the index of the bucket in which elements //! with keys equivalent to k would be found, if any such element existed. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the hash functor throws. //! //! <b>Note</b>: the return value is in the range [0, this->bucket_count()). size_type bucket(const value_type& k) const { return table_.bucket(k); } //! <b>Requires</b>: "hash_func" must be a hash function that induces //! the same hash values as the stored hasher. The difference is that //! "hash_func" hashes the given key instead of the value_type. //! //! <b>Effects</b>: Returns the index of the bucket in which elements //! with keys equivalent to k would be found, if any such element existed. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: If the hash functor throws. //! //! <b>Note</b>: the return value is in the range [0, this->bucket_count()). template<class KeyType, class KeyHasher> size_type bucket(const KeyType& k, const KeyHasher &hash_func) const { return table_.bucket(k, hash_func); } //! <b>Effects</b>: Returns the bucket array pointer passed in the constructor //! or the last rehash function. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. bucket_ptr bucket_pointer() const { return table_.bucket_pointer(); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a local_iterator pointing to the beginning //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. local_iterator begin(size_type n) { return table_.begin(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the beginning //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator begin(size_type n) const { return table_.begin(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the beginning //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator cbegin(size_type n) const { return table_.cbegin(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a local_iterator pointing to the end //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. local_iterator end(size_type n) { return table_.end(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the end //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator end(size_type n) const { return table_.end(n); } //! <b>Requires</b>: n is in the range [0, this->bucket_count()). //! //! <b>Effects</b>: Returns a const_local_iterator pointing to the end //! of the sequence stored in the bucket n. //! //! <b>Complexity</b>: Constant. //! //! <b>Throws</b>: Nothing. //! //! <b>Note</b>: [this->begin(n), this->end(n)) is a valid range //! containing all of the elements in the nth bucket. const_local_iterator cend(size_type n) const { return table_.cend(n); } //! <b>Requires</b>: new_buckets must be a pointer to a new bucket array //! or the same as the old bucket array. new_size is the length of the //! the array pointed by new_buckets. If new_buckets == this->bucket_pointer() //! n can be bigger or smaller than this->bucket_count(). //! //! <b>Effects</b>: Updates the internal reference with the new bucket erases //! the values from the old bucket and inserts then in the new one. //! //! If store_hash option is true, this method does not use the hash function. //! //! <b>Complexity</b>: Average case linear in this->size(), worst case quadratic. //! //! <b>Throws</b>: If the hasher functor throws. void rehash(const bucket_traits &new_bucket_traits) { table_.rehash(new_bucket_traits); } //! <b>Requires</b>: //! //! <b>Effects</b>: //! //! <b>Complexity</b>: //! //! <b>Throws</b>: //! //! <b>Note</b>: this method is only available if incremental<true> option is activated. bool incremental_rehash(bool grow = true) { return table_.incremental_rehash(grow); } //! <b>Note</b>: this method is only available if incremental<true> option is activated. bool incremental_rehash(const bucket_traits &new_bucket_traits) { return table_.incremental_rehash(new_bucket_traits); } //! <b>Requires</b>: //! //! <b>Effects</b>: //! //! <b>Complexity</b>: //! //! <b>Throws</b>: size_type split_count() const { return table_.split_count(); } //! <b>Effects</b>: Returns the nearest new bucket count optimized for //! the container that is bigger than n. This suggestion can be used //! to create bucket arrays with a size that will usually improve //! container's performance. If such value does not exist, the //! higher possible value is returned. //! //! <b>Complexity</b>: Amortized constant time. //! //! <b>Throws</b>: Nothing. static size_type suggested_upper_bucket_count(size_type n) { return table_type::suggested_upper_bucket_count(n); } //! <b>Effects</b>: Returns the nearest new bucket count optimized for //! the container that is smaller than n. This suggestion can be used //! to create bucket arrays with a size that will usually improve //! container's performance. If such value does not exist, the //! lower possible value is returned. //! //! <b>Complexity</b>: Amortized constant time. //! //! <b>Throws</b>: Nothing. static size_type suggested_lower_bucket_count(size_type n) { return table_type::suggested_lower_bucket_count(n); } }; //! Helper metafunction to define an \c unordered_multiset that yields to the same type when the //! same options (either explicitly or implicitly) are used. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class T, class ...Options> #else template<class T, class O1 = none, class O2 = none , class O3 = none, class O4 = none , class O5 = none, class O6 = none , class O7 = none, class O8 = none , class O9 = none, class O10= none > #endif struct make_unordered_multiset { /// @cond typedef unordered_multiset_impl < typename make_hashtable_opt <T, false, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3, O4, O5, O6, O7, O8, O9, O10 #else Options... #endif >::type > implementation_defined; /// @endcond typedef implementation_defined type; }; #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class T, class O1, class O2, class O3, class O4, class O5, class O6, class O7, class O8, class O9, class O10> #else template<class T, class ...Options> #endif class unordered_multiset : public make_unordered_multiset<T, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3, O4, O5, O6, O7, O8, O9, O10 #else Options... #endif >::type { typedef typename make_unordered_multiset <T, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3, O4, O5, O6, O7, O8, O9, O10 #else Options... #endif >::type Base; //Assert if passed value traits are compatible with the type BOOST_STATIC_ASSERT((detail::is_same<typename Base::value_traits::value_type, T>::value)); public: typedef typename Base::value_traits value_traits; typedef typename Base::bucket_traits bucket_traits; typedef typename Base::iterator iterator; typedef typename Base::const_iterator const_iterator; typedef typename Base::bucket_ptr bucket_ptr; typedef typename Base::size_type size_type; typedef typename Base::hasher hasher; typedef typename Base::key_equal key_equal; unordered_multiset( const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : Base(b_traits, hash_func, equal_func, v_traits) {} template<class Iterator> unordered_multiset( Iterator b , Iterator e , const bucket_traits &b_traits , const hasher & hash_func = hasher() , const key_equal &equal_func = key_equal() , const value_traits &v_traits = value_traits()) : Base(b, e, b_traits, hash_func, equal_func, v_traits) {} }; #endif } //namespace intrusive } //namespace boost #include <boost/intrusive/detail/config_end.hpp> #endif //BOOST_INTRUSIVE_UNORDERED_SET_HPP