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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Olaf Krzikalla 2004-2006.
// (C) Copyright Ion Gaztanaga 2006-2008
//
// 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.
void erase(const_iterator i)
{ 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.
void erase(const_iterator b, const_iterator e)
{ 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)
{ return table_.erase_and_dispose(i, disposer); }
#if !defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
template<class Disposer>
iterator erase_and_dispose(iterator i, Disposer disposer)
{ return this->erase_and_dispose(const_iterator(i), disposer); }
#endif
//! <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>: Insert range is in general O(N * log(N)), where N is the
//! size of the range. However, it is linear in N if the range is already sorted
//! by value_comp().
//!
//! <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.
void erase(const_iterator i)
{ 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.
void erase(const_iterator b, const_iterator e)
{ 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>
void erase_and_dispose(const_iterator i, Disposer disposer)
{ table_.erase_and_dispose(i, disposer); }
#if !defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
template<class Disposer>
iterator erase_and_dispose(iterator i, Disposer disposer)
{ return this->erase_and_dispose(const_iterator(i), disposer); }
#endif
//! <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>
void erase_and_dispose(const_iterator b, const_iterator e, Disposer disposer)
{ 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