// Multiset implementation -*- C++ -*-
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
-// Free Software Foundation, Inc.
+// Copyright (C) 2001-2015 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
* 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 _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_D)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
/**
* @brief A standard container made up of elements, which can be retrieved
*
* @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
* <a href="tables.html#69">associative container</a> (using equivalent
private:
/// This turns a red-black tree into a [multi]set.
- typedef typename _Alloc::template rebind<_Key>::other _Key_alloc_type;
+ 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;
/// 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.
/**
* @brief Creates a %multiset with no elements.
- * @param comp Comparator to use.
- * @param a An allocator object.
+ * @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<typename _InputIterator>
multiset(_InputIterator __first, _InputIterator __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<typename _InputIterator>
multiset(_InputIterator __first, _InputIterator __last,
const _Compare& __comp,
const allocator_type& __a = allocator_type())
- : _M_t(__comp, __a)
+ : _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.
+ * @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.
+ * by @a __x.
*/
multiset(const multiset& __x)
: _M_t(__x._M_t) { }
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#if __cplusplus >= 201103L
/**
* @brief %Multiset move constructor.
- * @param x A %multiset of identical element and allocator types.
+ * @param __x A %multiset of identical element and allocator types.
*
- * The newly-created %multiset contains the exact contents of @a x.
- * The contents of @a x are a valid, but unspecified %multiset.
+ * The newly-created %multiset contains the exact contents of @a __x.
+ * The contents of @a __x are a valid, but unspecified %multiset.
*/
multiset(multiset&& __x)
+ noexcept(is_nothrow_copy_constructible<_Compare>::value)
: _M_t(std::move(__x._M_t)) { }
/**
* @brief Builds a %multiset from an initializer_list.
- * @param l An initializer_list.
- * @param comp A comparison functor.
- * @param a An allocator object.
+ * @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()).
+ * 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, __a)
+ : _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); }
#endif
/**
* @brief %Multiset assignment operator.
- * @param x A %multiset of identical element and allocator types.
+ * @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.
+ * All the elements of @a __x are copied, but unlike the copy
+ * constructor, the allocator object is not copied.
*/
multiset&
operator=(const multiset& __x)
return *this;
}
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
- /**
- * @brief %Multiset move assignment operator.
- * @param x A %multiset of identical element and allocator types.
- *
- * The contents of @a x are moved into this %multiset (without copying).
- * @a x is a valid, but unspecified %multiset.
- */
+#if __cplusplus >= 201103L
+ /// Move assignment operator.
multiset&
- operator=(multiset&& __x)
- {
- // NB: DR 1204.
- // NB: DR 675.
- this->clear();
- this->swap(__x);
- return *this;
- }
+ operator=(multiset&&) = default;
/**
* @brief %Multiset list assignment operator.
- * @param l An initializer_list.
+ * @param __l An initializer_list.
*
* This function fills a %multiset with copies of the elements in the
- * initializer list @a l.
+ * 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
multiset&
operator=(initializer_list<value_type> __l)
{
- this->clear();
- this->insert(__l.begin(), __l.end());
+ _M_t._M_assign_equal(__l.begin(), __l.end());
return *this;
}
#endif
{ 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-only (constant) iterator that points to the first
* according to the keys.
*/
iterator
- begin() const
+ begin() const _GLIBCXX_NOEXCEPT
{ return _M_t.begin(); }
/**
* according to the keys.
*/
iterator
- end() const
+ end() const _GLIBCXX_NOEXCEPT
{ return _M_t.end(); }
/**
* according to the keys.
*/
reverse_iterator
- rbegin() const
+ rbegin() const _GLIBCXX_NOEXCEPT
{ return _M_t.rbegin(); }
/**
* according to the keys.
*/
reverse_iterator
- rend() const
+ rend() const _GLIBCXX_NOEXCEPT
{ return _M_t.rend(); }
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#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
+ cbegin() const noexcept
{ return _M_t.begin(); }
/**
* according to the keys.
*/
iterator
- cend() const
+ cend() const noexcept
{ return _M_t.end(); }
/**
* according to the keys.
*/
reverse_iterator
- crbegin() const
+ crbegin() const noexcept
{ return _M_t.rbegin(); }
/**
* according to the keys.
*/
reverse_iterator
- crend() const
+ 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
*/
void
swap(multiset& __x)
+#if __cplusplus >= 201103L
+ noexcept(_Alloc_traits::_S_nothrow_swap())
+#endif
{ _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
insert(const value_type& __x)
{ return _M_t._M_insert_equal(__x); }
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#if __cplusplus >= 201103L
iterator
insert(value_type&& __x)
{ return _M_t._M_insert_equal(std::move(__x)); }
/**
* @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++/manual/bk01pt07ch17.html
+ * 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).
insert(const_iterator __position, const value_type& __x)
{ return _M_t._M_insert_equal_(__position, __x); }
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#if __cplusplus >= 201103L
iterator
insert(const_iterator __position, value_type&& __x)
{ return _M_t._M_insert_equal_(__position, std::move(__x)); }
/**
* @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.
+ * @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.
*/
insert(_InputIterator __first, _InputIterator __last)
{ _M_t._M_insert_equal(__first, __last); }
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#if __cplusplus >= 201103L
/**
* @brief Attempts to insert a list of elements into the %multiset.
- * @param list A std::initializer_list<value_type> of elements
- * to be inserted.
+ * @param __l A std::initializer_list<value_type> of elements
+ * to be inserted.
*
* Complexity similar to that of the range constructor.
*/
{ this->insert(__l.begin(), __l.end()); }
#endif
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#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.
+ * @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.
* 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,
/**
* @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
erase(const key_type& __x)
{ return _M_t.erase(__x); }
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#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.
+ * @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.
* 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); }
* 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(_M_t._M_find_tr(__x))
+ { return _M_t._M_find_tr(__x); }
+
+ template<typename _Kt>
+ auto
+ find(const _Kt& __x) const -> decltype(_M_t._M_find_tr(__x))
+ { return _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); }
+#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>&,
/**
* @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
/**
* @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.
*/
multiset<_Key, _Compare, _Alloc>& __y)
{ __x.swap(__y); }
-_GLIBCXX_END_NESTED_NAMESPACE
+_GLIBCXX_END_NAMESPACE_CONTAINER
+} // namespace std
#endif /* _STL_MULTISET_H */
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