// Multiset implementation -*- C++ -*-
-// Copyright (C) 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+// Copyright (C) 2001-2017 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option)
+// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-// USA.
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
/*
*
* purpose. It is provided "as is" without express or implied warranty.
*/
-/** @file stl_multiset.h
+/** @file bits/stl_multiset.h
* This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
+ * Do not attempt to use it directly. @headername{set}
*/
-#ifndef _MULTISET_H
-#define _MULTISET_H 1
+#ifndef _STL_MULTISET_H
+#define _STL_MULTISET_H 1
#include <bits/concept_check.h>
+#if __cplusplus >= 201103L
+#include <initializer_list>
+#endif
-_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
- // Forward declaration of operators < and ==, needed for friend declaration.
- template <class _Key, class _Compare = std::less<_Key>,
- class _Alloc = std::allocator<_Key> >
- class multiset;
-
- template <class _Key, class _Compare, class _Alloc>
- inline bool
- operator==(const multiset<_Key, _Compare, _Alloc>& __x,
- const multiset<_Key, _Compare, _Alloc>& __y);
-
- template <class _Key, class _Compare, class _Alloc>
- inline bool
- operator<(const multiset<_Key, _Compare, _Alloc>& __x,
- const multiset<_Key, _Compare, _Alloc>& __y);
+ template<typename _Key, typename _Compare, typename _Alloc>
+ class set;
/**
* @brief A standard container made up of elements, which can be retrieved
* in logarithmic time.
*
- * @ingroup Containers
- * @ingroup Assoc_containers
+ * @ingroup associative_containers
+ *
+ *
+ * @tparam _Key Type of key objects.
+ * @tparam _Compare Comparison function object type, defaults to less<_Key>.
+ * @tparam _Alloc Allocator type, defaults to allocator<_Key>.
*
* Meets the requirements of a <a href="tables.html#65">container</a>, a
* <a href="tables.html#66">reversible container</a>, and an
*
* Multisets support bidirectional iterators.
*
- * @if maint
* The private tree data is declared exactly the same way for set and
* multiset; the distinction is made entirely in how the tree functions are
* called (*_unique versus *_equal, same as the standard).
- * @endif
*/
- template <class _Key, class _Compare, class _Alloc>
+ template <typename _Key, typename _Compare = std::less<_Key>,
+ typename _Alloc = std::allocator<_Key> >
class multiset
{
// concept requirements
typedef _Alloc allocator_type;
private:
- /// @if maint This turns a red-black tree into a [multi]set. @endif
- typedef typename _Alloc::template rebind<_Key>::other _Key_alloc_type;
+ /// This turns a red-black tree into a [multi]set.
+ typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
+ rebind<_Key>::other _Key_alloc_type;
typedef _Rb_tree<key_type, value_type, _Identity<value_type>,
key_compare, _Key_alloc_type> _Rep_type;
- /// @if maint The actual tree structure. @endif
+ /// The actual tree structure.
_Rep_type _M_t;
+ typedef __gnu_cxx::__alloc_traits<_Key_alloc_type> _Alloc_traits;
+
public:
- typedef typename _Key_alloc_type::pointer pointer;
- typedef typename _Key_alloc_type::const_pointer const_pointer;
- typedef typename _Key_alloc_type::reference reference;
- typedef typename _Key_alloc_type::const_reference const_reference;
+ typedef typename _Alloc_traits::pointer pointer;
+ typedef typename _Alloc_traits::const_pointer const_pointer;
+ typedef typename _Alloc_traits::reference reference;
+ typedef typename _Alloc_traits::const_reference const_reference;
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 103. set::iterator is required to be modifiable,
// but this allows modification of keys.
typedef typename _Rep_type::const_iterator iterator;
typedef typename _Rep_type::const_iterator const_iterator;
typedef typename _Rep_type::const_reverse_iterator reverse_iterator;
- typedef typename _Rep_type::const_reverse_iterator const_reverse_iterator;
+ typedef typename _Rep_type::const_reverse_iterator const_reverse_iterator;
typedef typename _Rep_type::size_type size_type;
typedef typename _Rep_type::difference_type difference_type;
- // allocation/deallocation
+#if __cplusplus > 201402L
+ using node_type = typename _Rep_type::node_type;
+#endif
+ // allocation/deallocation
/**
* @brief Default constructor creates no elements.
*/
- multiset()
- : _M_t(_Compare(), allocator_type()) { }
+#if __cplusplus < 201103L
+ multiset() : _M_t() { }
+#else
+ multiset() = default;
+#endif
+ /**
+ * @brief Creates a %multiset with no elements.
+ * @param __comp Comparator to use.
+ * @param __a An allocator object.
+ */
explicit
multiset(const _Compare& __comp,
const allocator_type& __a = allocator_type())
- : _M_t(__comp, __a) { }
+ : _M_t(__comp, _Key_alloc_type(__a)) { }
/**
* @brief Builds a %multiset from a range.
- * @param first An input iterator.
- * @param last An input iterator.
+ * @param __first An input iterator.
+ * @param __last An input iterator.
*
* Create a %multiset consisting of copies of the elements from
* [first,last). This is linear in N if the range is already sorted,
- * and NlogN otherwise (where N is distance(first,last)).
+ * and NlogN otherwise (where N is distance(__first,__last)).
*/
- template <class _InputIterator>
+ template<typename _InputIterator>
multiset(_InputIterator __first, _InputIterator __last)
- : _M_t(_Compare(), allocator_type())
- { _M_t.insert_equal(__first, __last); }
+ : _M_t()
+ { _M_t._M_insert_equal(__first, __last); }
/**
* @brief Builds a %multiset from a range.
- * @param first An input iterator.
- * @param last An input iterator.
- * @param comp A comparison functor.
- * @param a An allocator object.
+ * @param __first An input iterator.
+ * @param __last An input iterator.
+ * @param __comp A comparison functor.
+ * @param __a An allocator object.
*
* Create a %multiset consisting of copies of the elements from
- * [first,last). This is linear in N if the range is already sorted,
- * and NlogN otherwise (where N is distance(first,last)).
+ * [__first,__last). This is linear in N if the range is already sorted,
+ * and NlogN otherwise (where N is distance(__first,__last)).
*/
- template <class _InputIterator>
+ template<typename _InputIterator>
multiset(_InputIterator __first, _InputIterator __last,
const _Compare& __comp,
const allocator_type& __a = allocator_type())
- : _M_t(__comp, __a)
- { _M_t.insert_equal(__first, __last); }
+ : _M_t(__comp, _Key_alloc_type(__a))
+ { _M_t._M_insert_equal(__first, __last); }
/**
* @brief %Multiset copy constructor.
- * @param x A %multiset of identical element and allocator types.
*
- * The newly-created %multiset uses a copy of the allocation object used
- * by @a x.
+ * Whether the allocator is copied depends on the allocator traits.
*/
- multiset(const multiset<_Key,_Compare,_Alloc>& __x)
+#if __cplusplus < 201103L
+ multiset(const multiset& __x)
: _M_t(__x._M_t) { }
+#else
+ multiset(const multiset&) = default;
+
+ /**
+ * @brief %Multiset move constructor.
+ *
+ * The newly-created %multiset contains the exact contents of the
+ * moved instance. The moved instance is a valid, but unspecified
+ * %multiset.
+ */
+ multiset(multiset&&) = default;
+
+ /**
+ * @brief Builds a %multiset from an initializer_list.
+ * @param __l An initializer_list.
+ * @param __comp A comparison functor.
+ * @param __a An allocator object.
+ *
+ * Create a %multiset consisting of copies of the elements from
+ * the list. This is linear in N if the list is already sorted,
+ * and NlogN otherwise (where N is @a __l.size()).
+ */
+ multiset(initializer_list<value_type> __l,
+ const _Compare& __comp = _Compare(),
+ const allocator_type& __a = allocator_type())
+ : _M_t(__comp, _Key_alloc_type(__a))
+ { _M_t._M_insert_equal(__l.begin(), __l.end()); }
+
+ /// Allocator-extended default constructor.
+ explicit
+ multiset(const allocator_type& __a)
+ : _M_t(_Compare(), _Key_alloc_type(__a)) { }
+
+ /// Allocator-extended copy constructor.
+ multiset(const multiset& __m, const allocator_type& __a)
+ : _M_t(__m._M_t, _Key_alloc_type(__a)) { }
+
+ /// Allocator-extended move constructor.
+ multiset(multiset&& __m, const allocator_type& __a)
+ noexcept(is_nothrow_copy_constructible<_Compare>::value
+ && _Alloc_traits::_S_always_equal())
+ : _M_t(std::move(__m._M_t), _Key_alloc_type(__a)) { }
+
+ /// Allocator-extended initialier-list constructor.
+ multiset(initializer_list<value_type> __l, const allocator_type& __a)
+ : _M_t(_Compare(), _Key_alloc_type(__a))
+ { _M_t._M_insert_equal(__l.begin(), __l.end()); }
+
+ /// Allocator-extended range constructor.
+ template<typename _InputIterator>
+ multiset(_InputIterator __first, _InputIterator __last,
+ const allocator_type& __a)
+ : _M_t(_Compare(), _Key_alloc_type(__a))
+ { _M_t._M_insert_equal(__first, __last); }
+
+ /**
+ * The dtor only erases the elements, and note that if the elements
+ * themselves are pointers, the pointed-to memory is not touched in any
+ * way. Managing the pointer is the user's responsibility.
+ */
+ ~multiset() = default;
+#endif
/**
* @brief %Multiset assignment operator.
- * @param x A %multiset of identical element and allocator types.
*
- * All the elements of @a x are copied, but unlike the copy constructor,
- * the allocator object is not copied.
+ * Whether the allocator is copied depends on the allocator traits.
*/
- multiset<_Key,_Compare,_Alloc>&
- operator=(const multiset<_Key,_Compare,_Alloc>& __x)
+#if __cplusplus < 201103L
+ multiset&
+ operator=(const multiset& __x)
{
_M_t = __x._M_t;
return *this;
}
+#else
+ multiset&
+ operator=(const multiset&) = default;
+
+ /// Move assignment operator.
+ multiset&
+ operator=(multiset&&) = default;
+
+ /**
+ * @brief %Multiset list assignment operator.
+ * @param __l An initializer_list.
+ *
+ * This function fills a %multiset with copies of the elements in the
+ * initializer list @a __l.
+ *
+ * Note that the assignment completely changes the %multiset and
+ * that the resulting %multiset's size is the same as the number
+ * of elements assigned.
+ */
+ multiset&
+ operator=(initializer_list<value_type> __l)
+ {
+ _M_t._M_assign_equal(__l.begin(), __l.end());
+ return *this;
+ }
+#endif
// accessors:
{ return _M_t.key_comp(); }
/// Returns the memory allocation object.
allocator_type
- get_allocator() const
- { return _M_t.get_allocator(); }
+ get_allocator() const _GLIBCXX_NOEXCEPT
+ { return allocator_type(_M_t.get_allocator()); }
/**
- * Returns a read/write iterator that points to the first element in the
- * %multiset. Iteration is done in ascending order according to the
- * keys.
+ * Returns a read-only (constant) iterator that points to the first
+ * element in the %multiset. Iteration is done in ascending order
+ * according to the keys.
*/
iterator
- begin() const
+ begin() const _GLIBCXX_NOEXCEPT
{ return _M_t.begin(); }
/**
- * Returns a read/write iterator that points one past the last element in
- * the %multiset. Iteration is done in ascending order according to the
- * keys.
+ * Returns a read-only (constant) iterator that points one past the last
+ * element in the %multiset. Iteration is done in ascending order
+ * according to the keys.
*/
iterator
- end() const
+ end() const _GLIBCXX_NOEXCEPT
{ return _M_t.end(); }
/**
- * Returns a read/write reverse iterator that points to the last element
- * in the %multiset. Iteration is done in descending order according to
- * the keys.
+ * Returns a read-only (constant) reverse iterator that points to the
+ * last element in the %multiset. Iteration is done in descending order
+ * according to the keys.
*/
reverse_iterator
- rbegin() const
+ rbegin() const _GLIBCXX_NOEXCEPT
{ return _M_t.rbegin(); }
/**
- * Returns a read/write reverse iterator that points to the last element
- * in the %multiset. Iteration is done in descending order according to
- * the keys.
+ * Returns a read-only (constant) reverse iterator that points to the
+ * last element in the %multiset. Iteration is done in descending order
+ * according to the keys.
*/
reverse_iterator
- rend() const
+ rend() const _GLIBCXX_NOEXCEPT
{ return _M_t.rend(); }
+#if __cplusplus >= 201103L
+ /**
+ * Returns a read-only (constant) iterator that points to the first
+ * element in the %multiset. Iteration is done in ascending order
+ * according to the keys.
+ */
+ iterator
+ cbegin() const noexcept
+ { return _M_t.begin(); }
+
+ /**
+ * Returns a read-only (constant) iterator that points one past the last
+ * element in the %multiset. Iteration is done in ascending order
+ * according to the keys.
+ */
+ iterator
+ cend() const noexcept
+ { return _M_t.end(); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points to the
+ * last element in the %multiset. Iteration is done in descending order
+ * according to the keys.
+ */
+ reverse_iterator
+ crbegin() const noexcept
+ { return _M_t.rbegin(); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points to the
+ * last element in the %multiset. Iteration is done in descending order
+ * according to the keys.
+ */
+ reverse_iterator
+ crend() const noexcept
+ { return _M_t.rend(); }
+#endif
+
/// Returns true if the %set is empty.
bool
- empty() const
+ empty() const _GLIBCXX_NOEXCEPT
{ return _M_t.empty(); }
/// Returns the size of the %set.
size_type
- size() const
+ size() const _GLIBCXX_NOEXCEPT
{ return _M_t.size(); }
/// Returns the maximum size of the %set.
size_type
- max_size() const
+ max_size() const _GLIBCXX_NOEXCEPT
{ return _M_t.max_size(); }
/**
* @brief Swaps data with another %multiset.
- * @param x A %multiset of the same element and allocator types.
+ * @param __x A %multiset of the same element and allocator types.
*
* This exchanges the elements between two multisets in constant time.
* (It is only swapping a pointer, an integer, and an instance of the @c
* be quite fast.)
* Note that the global std::swap() function is specialized such that
* std::swap(s1,s2) will feed to this function.
+ *
+ * Whether the allocators are swapped depends on the allocator traits.
*/
void
- swap(multiset<_Key, _Compare, _Alloc>& __x)
+ swap(multiset& __x)
+ _GLIBCXX_NOEXCEPT_IF(__is_nothrow_swappable<_Compare>::value)
{ _M_t.swap(__x._M_t); }
// insert/erase
+#if __cplusplus >= 201103L
+ /**
+ * @brief Builds and inserts an element into the %multiset.
+ * @param __args Arguments used to generate the element instance to be
+ * inserted.
+ * @return An iterator that points to the inserted element.
+ *
+ * This function inserts an element into the %multiset. Contrary
+ * to a std::set the %multiset does not rely on unique keys and thus
+ * multiple copies of the same element can be inserted.
+ *
+ * Insertion requires logarithmic time.
+ */
+ template<typename... _Args>
+ iterator
+ emplace(_Args&&... __args)
+ { return _M_t._M_emplace_equal(std::forward<_Args>(__args)...); }
+
+ /**
+ * @brief Builds and inserts an element into the %multiset.
+ * @param __pos An iterator that serves as a hint as to where the
+ * element should be inserted.
+ * @param __args Arguments used to generate the element instance to be
+ * inserted.
+ * @return An iterator that points to the inserted element.
+ *
+ * This function inserts an element into the %multiset. Contrary
+ * to a std::set the %multiset does not rely on unique keys and thus
+ * multiple copies of the same element can be inserted.
+ *
+ * Note that the first parameter is only a hint and can potentially
+ * improve the performance of the insertion process. A bad hint would
+ * cause no gains in efficiency.
+ *
+ * See https://gcc.gnu.org/onlinedocs/libstdc++/manual/associative.html#containers.associative.insert_hints
+ * for more on @a hinting.
+ *
+ * Insertion requires logarithmic time (if the hint is not taken).
+ */
+ template<typename... _Args>
+ iterator
+ emplace_hint(const_iterator __pos, _Args&&... __args)
+ {
+ return _M_t._M_emplace_hint_equal(__pos,
+ std::forward<_Args>(__args)...);
+ }
+#endif
+
/**
* @brief Inserts an element into the %multiset.
- * @param x Element to be inserted.
+ * @param __x Element to be inserted.
* @return An iterator that points to the inserted element.
*
* This function inserts an element into the %multiset. Contrary
*/
iterator
insert(const value_type& __x)
- { return _M_t.insert_equal(__x); }
+ { return _M_t._M_insert_equal(__x); }
+
+#if __cplusplus >= 201103L
+ iterator
+ insert(value_type&& __x)
+ { return _M_t._M_insert_equal(std::move(__x)); }
+#endif
/**
* @brief Inserts an element into the %multiset.
- * @param position An iterator that serves as a hint as to where the
+ * @param __position An iterator that serves as a hint as to where the
* element should be inserted.
- * @param x Element to be inserted.
+ * @param __x Element to be inserted.
* @return An iterator that points to the inserted element.
*
* This function inserts an element into the %multiset. Contrary
* improve the performance of the insertion process. A bad hint would
* cause no gains in efficiency.
*
- * See http://gcc.gnu.org/onlinedocs/libstdc++/23_containers/howto.html#4
- * for more on "hinting".
+ * See https://gcc.gnu.org/onlinedocs/libstdc++/manual/associative.html#containers.associative.insert_hints
+ * for more on @a hinting.
*
* Insertion requires logarithmic time (if the hint is not taken).
*/
iterator
- insert(iterator __position, const value_type& __x)
- { return _M_t.insert_equal(__position, __x); }
+ insert(const_iterator __position, const value_type& __x)
+ { return _M_t._M_insert_equal_(__position, __x); }
+
+#if __cplusplus >= 201103L
+ iterator
+ insert(const_iterator __position, value_type&& __x)
+ { return _M_t._M_insert_equal_(__position, std::move(__x)); }
+#endif
/**
- * @brief A template function that attemps to insert a range of elements.
- * @param first Iterator pointing to the start of the range to be
- * inserted.
- * @param last Iterator pointing to the end of the range.
+ * @brief A template function that tries to insert a range of elements.
+ * @param __first Iterator pointing to the start of the range to be
+ * inserted.
+ * @param __last Iterator pointing to the end of the range.
*
* Complexity similar to that of the range constructor.
*/
- template <class _InputIterator>
+ template<typename _InputIterator>
void
insert(_InputIterator __first, _InputIterator __last)
- { _M_t.insert_equal(__first, __last); }
+ { _M_t._M_insert_equal(__first, __last); }
+#if __cplusplus >= 201103L
+ /**
+ * @brief Attempts to insert a list of elements into the %multiset.
+ * @param __l A std::initializer_list<value_type> of elements
+ * to be inserted.
+ *
+ * Complexity similar to that of the range constructor.
+ */
+ void
+ insert(initializer_list<value_type> __l)
+ { this->insert(__l.begin(), __l.end()); }
+#endif
+
+#if __cplusplus > 201402L
+ /// Extract a node.
+ node_type
+ extract(const_iterator __pos)
+ {
+ __glibcxx_assert(__pos != end());
+ return _M_t.extract(__pos);
+ }
+
+ /// Extract a node.
+ node_type
+ extract(const key_type& __x)
+ { return _M_t.extract(__x); }
+
+ /// Re-insert an extracted node.
+ iterator
+ insert(node_type&& __nh)
+ { return _M_t._M_reinsert_node_equal(std::move(__nh)); }
+
+ /// Re-insert an extracted node.
+ iterator
+ insert(const_iterator __hint, node_type&& __nh)
+ { return _M_t._M_reinsert_node_hint_equal(__hint, std::move(__nh)); }
+
+ template<typename, typename>
+ friend class _Rb_tree_merge_helper;
+
+ template<typename _Compare1>
+ void
+ merge(multiset<_Key, _Compare1, _Alloc>& __source)
+ {
+ using _Merge_helper = _Rb_tree_merge_helper<multiset, _Compare1>;
+ _M_t._M_merge_equal(_Merge_helper::_S_get_tree(__source));
+ }
+
+ template<typename _Compare1>
+ void
+ merge(multiset<_Key, _Compare1, _Alloc>&& __source)
+ { merge(__source); }
+
+ template<typename _Compare1>
+ void
+ merge(set<_Key, _Compare1, _Alloc>& __source)
+ {
+ using _Merge_helper = _Rb_tree_merge_helper<multiset, _Compare1>;
+ _M_t._M_merge_equal(_Merge_helper::_S_get_tree(__source));
+ }
+
+ template<typename _Compare1>
+ void
+ merge(set<_Key, _Compare1, _Alloc>&& __source)
+ { merge(__source); }
+#endif // C++17
+
+#if __cplusplus >= 201103L
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR 130. Associative erase should return an iterator.
+ /**
+ * @brief Erases an element from a %multiset.
+ * @param __position An iterator pointing to the element to be erased.
+ * @return An iterator pointing to the element immediately following
+ * @a position prior to the element being erased. If no such
+ * element exists, end() is returned.
+ *
+ * This function erases an element, pointed to by the given iterator,
+ * from a %multiset. Note that this function only erases the element,
+ * and that if the element is itself a pointer, the pointed-to memory is
+ * not touched in any way. Managing the pointer is the user's
+ * responsibility.
+ */
+ _GLIBCXX_ABI_TAG_CXX11
+ iterator
+ erase(const_iterator __position)
+ { return _M_t.erase(__position); }
+#else
/**
* @brief Erases an element from a %multiset.
- * @param position An iterator pointing to the element to be erased.
+ * @param __position An iterator pointing to the element to be erased.
*
* This function erases an element, pointed to by the given iterator,
* from a %multiset. Note that this function only erases the element,
* and that if the element is itself a pointer, the pointed-to memory is
* not touched in any way. Managing the pointer is the user's
- * responsibilty.
+ * responsibility.
*/
void
erase(iterator __position)
{ _M_t.erase(__position); }
+#endif
/**
* @brief Erases elements according to the provided key.
- * @param x Key of element to be erased.
+ * @param __x Key of element to be erased.
* @return The number of elements erased.
*
* This function erases all elements located by the given key from a
* %multiset.
* Note that this function only erases the element, and that if
* the element is itself a pointer, the pointed-to memory is not touched
- * in any way. Managing the pointer is the user's responsibilty.
+ * in any way. Managing the pointer is the user's responsibility.
*/
size_type
erase(const key_type& __x)
{ return _M_t.erase(__x); }
+#if __cplusplus >= 201103L
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR 130. Associative erase should return an iterator.
+ /**
+ * @brief Erases a [first,last) range of elements from a %multiset.
+ * @param __first Iterator pointing to the start of the range to be
+ * erased.
+ * @param __last Iterator pointing to the end of the range to
+ * be erased.
+ * @return The iterator @a last.
+ *
+ * This function erases a sequence of elements from a %multiset.
+ * Note that this function only erases the elements, and that if
+ * the elements themselves are pointers, the pointed-to memory is not
+ * touched in any way. Managing the pointer is the user's
+ * responsibility.
+ */
+ _GLIBCXX_ABI_TAG_CXX11
+ iterator
+ erase(const_iterator __first, const_iterator __last)
+ { return _M_t.erase(__first, __last); }
+#else
/**
* @brief Erases a [first,last) range of elements from a %multiset.
* @param first Iterator pointing to the start of the range to be
* This function erases a sequence of elements from a %multiset.
* Note that this function only erases the elements, and that if
* the elements themselves are pointers, the pointed-to memory is not
- * touched in any way. Managing the pointer is the user's responsibilty.
+ * touched in any way. Managing the pointer is the user's
+ * responsibility.
*/
void
erase(iterator __first, iterator __last)
{ _M_t.erase(__first, __last); }
+#endif
/**
* Erases all elements in a %multiset. Note that this function only
* erases the elements, and that if the elements themselves are pointers,
* the pointed-to memory is not touched in any way. Managing the pointer
- * is the user's responsibilty.
+ * is the user's responsibility.
*/
void
- clear()
+ clear() _GLIBCXX_NOEXCEPT
{ _M_t.clear(); }
// multiset operations:
+ //@{
/**
* @brief Finds the number of elements with given key.
- * @param x Key of elements to be located.
+ * @param __x Key of elements to be located.
* @return Number of elements with specified key.
*/
size_type
count(const key_type& __x) const
{ return _M_t.count(__x); }
+#if __cplusplus > 201103L
+ template<typename _Kt>
+ auto
+ count(const _Kt& __x) const -> decltype(_M_t._M_count_tr(__x))
+ { return _M_t._M_count_tr(__x); }
+#endif
+ //@}
+
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 214. set::find() missing const overload
//@{
/**
* @brief Tries to locate an element in a %set.
- * @param x Element to be located.
+ * @param __x Element to be located.
* @return Iterator pointing to sought-after element, or end() if not
* found.
*
const_iterator
find(const key_type& __x) const
{ return _M_t.find(__x); }
+
+#if __cplusplus > 201103L
+ template<typename _Kt>
+ auto
+ find(const _Kt& __x)
+ -> decltype(iterator{_M_t._M_find_tr(__x)})
+ { return iterator{_M_t._M_find_tr(__x)}; }
+
+ template<typename _Kt>
+ auto
+ find(const _Kt& __x) const
+ -> decltype(const_iterator{_M_t._M_find_tr(__x)})
+ { return const_iterator{_M_t._M_find_tr(__x)}; }
+#endif
//@}
//@{
/**
* @brief Finds the beginning of a subsequence matching given key.
- * @param x Key to be located.
+ * @param __x Key to be located.
* @return Iterator pointing to first element equal to or greater
* than key, or end().
*
const_iterator
lower_bound(const key_type& __x) const
{ return _M_t.lower_bound(__x); }
+
+#if __cplusplus > 201103L
+ template<typename _Kt>
+ auto
+ lower_bound(const _Kt& __x)
+ -> decltype(_M_t._M_lower_bound_tr(__x))
+ { return _M_t._M_lower_bound_tr(__x); }
+
+ template<typename _Kt>
+ auto
+ lower_bound(const _Kt& __x) const
+ -> decltype(_M_t._M_lower_bound_tr(__x))
+ { return _M_t._M_lower_bound_tr(__x); }
+#endif
//@}
//@{
/**
* @brief Finds the end of a subsequence matching given key.
- * @param x Key to be located.
+ * @param __x Key to be located.
* @return Iterator pointing to the first element
* greater than key, or end().
*/
const_iterator
upper_bound(const key_type& __x) const
{ return _M_t.upper_bound(__x); }
+
+#if __cplusplus > 201103L
+ template<typename _Kt>
+ auto
+ upper_bound(const _Kt& __x)
+ -> decltype(_M_t._M_upper_bound_tr(__x))
+ { return _M_t._M_upper_bound_tr(__x); }
+
+ template<typename _Kt>
+ auto
+ upper_bound(const _Kt& __x) const
+ -> decltype(_M_t._M_upper_bound_tr(__x))
+ { return _M_t._M_upper_bound_tr(__x); }
+#endif
//@}
//@{
/**
* @brief Finds a subsequence matching given key.
- * @param x Key to be located.
+ * @param __x Key to be located.
* @return Pair of iterators that possibly points to the subsequence
* matching given key.
*
equal_range(const key_type& __x) const
{ return _M_t.equal_range(__x); }
- template <class _K1, class _C1, class _A1>
+#if __cplusplus > 201103L
+ template<typename _Kt>
+ auto
+ equal_range(const _Kt& __x)
+ -> decltype(_M_t._M_equal_range_tr(__x))
+ { return _M_t._M_equal_range_tr(__x); }
+
+ template<typename _Kt>
+ auto
+ equal_range(const _Kt& __x) const
+ -> decltype(_M_t._M_equal_range_tr(__x))
+ { return _M_t._M_equal_range_tr(__x); }
+#endif
+ //@}
+
+ template<typename _K1, typename _C1, typename _A1>
friend bool
- operator== (const multiset<_K1, _C1, _A1>&,
- const multiset<_K1, _C1, _A1>&);
+ operator==(const multiset<_K1, _C1, _A1>&,
+ const multiset<_K1, _C1, _A1>&);
- template <class _K1, class _C1, class _A1>
+ template<typename _K1, typename _C1, typename _A1>
friend bool
operator< (const multiset<_K1, _C1, _A1>&,
const multiset<_K1, _C1, _A1>&);
/**
* @brief Multiset equality comparison.
- * @param x A %multiset.
- * @param y A %multiset of the same type as @a x.
+ * @param __x A %multiset.
+ * @param __y A %multiset of the same type as @a __x.
* @return True iff the size and elements of the multisets are equal.
*
* This is an equivalence relation. It is linear in the size of the
* Multisets are considered equivalent if their sizes are equal, and if
* corresponding elements compare equal.
*/
- template <class _Key, class _Compare, class _Alloc>
+ template<typename _Key, typename _Compare, typename _Alloc>
inline bool
operator==(const multiset<_Key, _Compare, _Alloc>& __x,
const multiset<_Key, _Compare, _Alloc>& __y)
/**
* @brief Multiset ordering relation.
- * @param x A %multiset.
- * @param y A %multiset of the same type as @a x.
- * @return True iff @a x is lexicographically less than @a y.
+ * @param __x A %multiset.
+ * @param __y A %multiset of the same type as @a __x.
+ * @return True iff @a __x is lexicographically less than @a __y.
*
* This is a total ordering relation. It is linear in the size of the
- * maps. The elements must be comparable with @c <.
+ * sets. The elements must be comparable with @c <.
*
* See std::lexicographical_compare() for how the determination is made.
*/
- template <class _Key, class _Compare, class _Alloc>
+ template<typename _Key, typename _Compare, typename _Alloc>
inline bool
operator<(const multiset<_Key, _Compare, _Alloc>& __x,
const multiset<_Key, _Compare, _Alloc>& __y)
{ return __x._M_t < __y._M_t; }
/// Returns !(x == y).
- template <class _Key, class _Compare, class _Alloc>
+ template<typename _Key, typename _Compare, typename _Alloc>
inline bool
operator!=(const multiset<_Key, _Compare, _Alloc>& __x,
const multiset<_Key, _Compare, _Alloc>& __y)
{ return !(__x == __y); }
/// Returns y < x.
- template <class _Key, class _Compare, class _Alloc>
+ template<typename _Key, typename _Compare, typename _Alloc>
inline bool
operator>(const multiset<_Key,_Compare,_Alloc>& __x,
const multiset<_Key,_Compare,_Alloc>& __y)
{ return __y < __x; }
/// Returns !(y < x)
- template <class _Key, class _Compare, class _Alloc>
+ template<typename _Key, typename _Compare, typename _Alloc>
inline bool
operator<=(const multiset<_Key, _Compare, _Alloc>& __x,
const multiset<_Key, _Compare, _Alloc>& __y)
{ return !(__y < __x); }
/// Returns !(x < y)
- template <class _Key, class _Compare, class _Alloc>
+ template<typename _Key, typename _Compare, typename _Alloc>
inline bool
operator>=(const multiset<_Key, _Compare, _Alloc>& __x,
const multiset<_Key, _Compare, _Alloc>& __y)
{ return !(__x < __y); }
/// See std::multiset::swap().
- template <class _Key, class _Compare, class _Alloc>
+ template<typename _Key, typename _Compare, typename _Alloc>
inline void
swap(multiset<_Key, _Compare, _Alloc>& __x,
multiset<_Key, _Compare, _Alloc>& __y)
+ _GLIBCXX_NOEXCEPT_IF(noexcept(__x.swap(__y)))
{ __x.swap(__y); }
-_GLIBCXX_END_NESTED_NAMESPACE
+_GLIBCXX_END_NAMESPACE_CONTAINER
+
+#if __cplusplus > 201402L
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+ // Allow std::multiset access to internals of compatible sets.
+ template<typename _Val, typename _Cmp1, typename _Alloc, typename _Cmp2>
+ struct
+ _Rb_tree_merge_helper<_GLIBCXX_STD_C::multiset<_Val, _Cmp1, _Alloc>,
+ _Cmp2>
+ {
+ private:
+ friend class _GLIBCXX_STD_C::multiset<_Val, _Cmp1, _Alloc>;
+
+ static auto&
+ _S_get_tree(_GLIBCXX_STD_C::set<_Val, _Cmp2, _Alloc>& __set)
+ { return __set._M_t; }
+
+ static auto&
+ _S_get_tree(_GLIBCXX_STD_C::multiset<_Val, _Cmp2, _Alloc>& __set)
+ { return __set._M_t; }
+ };
+_GLIBCXX_END_NAMESPACE_VERSION
+#endif // C++17
+
+} // namespace std
-#endif /* _MULTISET_H */
+#endif /* _STL_MULTISET_H */