2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP_HASH_MAP
11 #define _LIBCPP_HASH_MAP
20 template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
21 class Alloc = allocator<pair<const Key, T>>>
27 typedef T mapped_type;
29 typedef Pred key_equal;
30 typedef Alloc allocator_type;
31 typedef pair<const key_type, mapped_type> value_type;
32 typedef value_type& reference;
33 typedef const value_type& const_reference;
34 typedef typename allocator_traits<allocator_type>::pointer pointer;
35 typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
36 typedef typename allocator_traits<allocator_type>::size_type size_type;
37 typedef typename allocator_traits<allocator_type>::difference_type difference_type;
39 typedef /unspecified/ iterator;
40 typedef /unspecified/ const_iterator;
43 explicit hash_map(size_type n, const hasher& hf = hasher(),
44 const key_equal& eql = key_equal(),
45 const allocator_type& a = allocator_type());
46 template <class InputIterator>
47 hash_map(InputIterator f, InputIterator l);
48 template <class InputIterator>
49 hash_map(InputIterator f, InputIterator l,
50 size_type n, const hasher& hf = hasher(),
51 const key_equal& eql = key_equal(),
52 const allocator_type& a = allocator_type());
53 hash_map(const hash_map&);
55 hash_map& operator=(const hash_map&);
57 allocator_type get_allocator() const;
60 size_type size() const;
61 size_type max_size() const;
65 const_iterator begin() const;
66 const_iterator end() const;
68 pair<iterator, bool> insert(const value_type& obj);
69 template <class InputIterator>
70 void insert(InputIterator first, InputIterator last);
72 void erase(const_iterator position);
73 size_type erase(const key_type& k);
74 void erase(const_iterator first, const_iterator last);
79 hasher hash_funct() const;
80 key_equal key_eq() const;
82 iterator find(const key_type& k);
83 const_iterator find(const key_type& k) const;
84 size_type count(const key_type& k) const;
85 pair<iterator, iterator> equal_range(const key_type& k);
86 pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
88 mapped_type& operator[](const key_type& k);
90 size_type bucket_count() const;
91 size_type max_bucket_count() const;
93 size_type elems_in_bucket(size_type n) const;
95 void resize(size_type n);
98 template <class Key, class T, class Hash, class Pred, class Alloc>
99 void swap(hash_map<Key, T, Hash, Pred, Alloc>& x,
100 hash_map<Key, T, Hash, Pred, Alloc>& y);
102 template <class Key, class T, class Hash, class Pred, class Alloc>
104 operator==(const hash_map<Key, T, Hash, Pred, Alloc>& x,
105 const hash_map<Key, T, Hash, Pred, Alloc>& y);
107 template <class Key, class T, class Hash, class Pred, class Alloc>
109 operator!=(const hash_map<Key, T, Hash, Pred, Alloc>& x,
110 const hash_map<Key, T, Hash, Pred, Alloc>& y);
112 template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
113 class Alloc = allocator<pair<const Key, T>>>
118 typedef Key key_type;
119 typedef T mapped_type;
121 typedef Pred key_equal;
122 typedef Alloc allocator_type;
123 typedef pair<const key_type, mapped_type> value_type;
124 typedef value_type& reference;
125 typedef const value_type& const_reference;
126 typedef typename allocator_traits<allocator_type>::pointer pointer;
127 typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
128 typedef typename allocator_traits<allocator_type>::size_type size_type;
129 typedef typename allocator_traits<allocator_type>::difference_type difference_type;
131 typedef /unspecified/ iterator;
132 typedef /unspecified/ const_iterator;
134 explicit hash_multimap(size_type n = 193, const hasher& hf = hasher(),
135 const key_equal& eql = key_equal(),
136 const allocator_type& a = allocator_type());
137 template <class InputIterator>
138 hash_multimap(InputIterator f, InputIterator l,
139 size_type n = 193, const hasher& hf = hasher(),
140 const key_equal& eql = key_equal(),
141 const allocator_type& a = allocator_type());
142 explicit hash_multimap(const allocator_type&);
143 hash_multimap(const hash_multimap&);
145 hash_multimap& operator=(const hash_multimap&);
147 allocator_type get_allocator() const;
150 size_type size() const;
151 size_type max_size() const;
155 const_iterator begin() const;
156 const_iterator end() const;
158 iterator insert(const value_type& obj);
159 template <class InputIterator>
160 void insert(InputIterator first, InputIterator last);
162 void erase(const_iterator position);
163 size_type erase(const key_type& k);
164 void erase(const_iterator first, const_iterator last);
167 void swap(hash_multimap&);
169 hasher hash_funct() const;
170 key_equal key_eq() const;
172 iterator find(const key_type& k);
173 const_iterator find(const key_type& k) const;
174 size_type count(const key_type& k) const;
175 pair<iterator, iterator> equal_range(const key_type& k);
176 pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
178 size_type bucket_count() const;
179 size_type max_bucket_count() const;
181 size_type elems_in_bucket(size_type n) const;
183 void resize(size_type n);
186 template <class Key, class T, class Hash, class Pred, class Alloc>
187 void swap(hash_multimap<Key, T, Hash, Pred, Alloc>& x,
188 hash_multimap<Key, T, Hash, Pred, Alloc>& y);
190 template <class Key, class T, class Hash, class Pred, class Alloc>
192 operator==(const hash_multimap<Key, T, Hash, Pred, Alloc>& x,
193 const hash_multimap<Key, T, Hash, Pred, Alloc>& y);
195 template <class Key, class T, class Hash, class Pred, class Alloc>
197 operator!=(const hash_multimap<Key, T, Hash, Pred, Alloc>& x,
198 const hash_multimap<Key, T, Hash, Pred, Alloc>& y);
204 #include <__assert> // all public C++ headers provide the assertion handler
206 #include <__hash_table>
208 #include <ext/__hash>
209 #include <functional>
211 #if defined(__DEPRECATED) && __DEPRECATED
212 #if defined(_LIBCPP_WARNING)
213 _LIBCPP_WARNING("Use of the header <ext/hash_map> is deprecated. Migrate to <unordered_map>")
215 # warning Use of the header <ext/hash_map> is deprecated. Migrate to <unordered_map>
219 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
220 # pragma GCC system_header
223 namespace __gnu_cxx {
225 template <class _Tp, class _Hash,
226 bool = std::is_empty<_Hash>::value && !std::__libcpp_is_final<_Hash>::value
228 class __hash_map_hasher
232 _LIBCPP_INLINE_VISIBILITY __hash_map_hasher() : _Hash() {}
233 _LIBCPP_INLINE_VISIBILITY __hash_map_hasher(const _Hash& __h) : _Hash(__h) {}
234 _LIBCPP_INLINE_VISIBILITY const _Hash& hash_function() const {return *this;}
235 _LIBCPP_INLINE_VISIBILITY
236 size_t operator()(const _Tp& __x) const
237 {return static_cast<const _Hash&>(*this)(__x.first);}
238 _LIBCPP_INLINE_VISIBILITY
239 size_t operator()(const typename _Tp::first_type& __x) const
240 {return static_cast<const _Hash&>(*this)(__x);}
243 template <class _Tp, class _Hash>
244 class __hash_map_hasher<_Tp, _Hash, false>
248 _LIBCPP_INLINE_VISIBILITY __hash_map_hasher() : __hash_() {}
249 _LIBCPP_INLINE_VISIBILITY __hash_map_hasher(const _Hash& __h) : __hash_(__h) {}
250 _LIBCPP_INLINE_VISIBILITY const _Hash& hash_function() const {return __hash_;}
251 _LIBCPP_INLINE_VISIBILITY
252 size_t operator()(const _Tp& __x) const
253 {return __hash_(__x.first);}
254 _LIBCPP_INLINE_VISIBILITY
255 size_t operator()(const typename _Tp::first_type& __x) const
256 {return __hash_(__x);}
259 template <class _Tp, class _Pred,
260 bool = std::is_empty<_Pred>::value && !std::__libcpp_is_final<_Pred>::value
262 class __hash_map_equal
266 _LIBCPP_INLINE_VISIBILITY __hash_map_equal() : _Pred() {}
267 _LIBCPP_INLINE_VISIBILITY __hash_map_equal(const _Pred& __p) : _Pred(__p) {}
268 _LIBCPP_INLINE_VISIBILITY const _Pred& key_eq() const {return *this;}
269 _LIBCPP_INLINE_VISIBILITY
270 bool operator()(const _Tp& __x, const _Tp& __y) const
271 {return static_cast<const _Pred&>(*this)(__x.first, __y.first);}
272 _LIBCPP_INLINE_VISIBILITY
273 bool operator()(const typename _Tp::first_type& __x, const _Tp& __y) const
274 {return static_cast<const _Pred&>(*this)(__x, __y.first);}
275 _LIBCPP_INLINE_VISIBILITY
276 bool operator()(const _Tp& __x, const typename _Tp::first_type& __y) const
277 {return static_cast<const _Pred&>(*this)(__x.first, __y);}
278 _LIBCPP_INLINE_VISIBILITY
279 bool operator()(const typename _Tp::first_type& __x,
280 const typename _Tp::first_type& __y) const
281 {return static_cast<const _Pred&>(*this)(__x, __y);}
284 template <class _Tp, class _Pred>
285 class __hash_map_equal<_Tp, _Pred, false>
289 _LIBCPP_INLINE_VISIBILITY __hash_map_equal() : __pred_() {}
290 _LIBCPP_INLINE_VISIBILITY __hash_map_equal(const _Pred& __p) : __pred_(__p) {}
291 _LIBCPP_INLINE_VISIBILITY const _Pred& key_eq() const {return __pred_;}
292 _LIBCPP_INLINE_VISIBILITY
293 bool operator()(const _Tp& __x, const _Tp& __y) const
294 {return __pred_(__x.first, __y.first);}
295 _LIBCPP_INLINE_VISIBILITY
296 bool operator()(const typename _Tp::first_type& __x, const _Tp& __y) const
297 {return __pred_(__x, __y.first);}
298 _LIBCPP_INLINE_VISIBILITY
299 bool operator()(const _Tp& __x, const typename _Tp::first_type& __y) const
300 {return __pred_(__x.first, __y);}
301 _LIBCPP_INLINE_VISIBILITY
302 bool operator()(const typename _Tp::first_type& __x,
303 const typename _Tp::first_type& __y) const
304 {return __pred_(__x, __y);}
307 template <class _Alloc>
308 class __hash_map_node_destructor
310 typedef _Alloc allocator_type;
311 typedef std::allocator_traits<allocator_type> __alloc_traits;
312 typedef typename __alloc_traits::value_type::__node_value_type value_type;
314 typedef typename __alloc_traits::pointer pointer;
316 typedef typename value_type::first_type first_type;
317 typedef typename value_type::second_type second_type;
319 allocator_type& __na_;
322 bool __first_constructed;
323 bool __second_constructed;
325 _LIBCPP_HIDE_FROM_ABI __hash_map_node_destructor(__hash_map_node_destructor const&) = default;
326 __hash_map_node_destructor& operator=(const __hash_map_node_destructor&) = delete;
328 _LIBCPP_INLINE_VISIBILITY
329 explicit __hash_map_node_destructor(allocator_type& __na)
331 __first_constructed(false),
332 __second_constructed(false)
335 #ifndef _LIBCPP_CXX03_LANG
336 _LIBCPP_INLINE_VISIBILITY
337 __hash_map_node_destructor(std::__hash_node_destructor<allocator_type>&& __x)
339 __first_constructed(__x.__value_constructed),
340 __second_constructed(__x.__value_constructed)
342 __x.__value_constructed = false;
344 #else // _LIBCPP_CXX03_LANG
345 _LIBCPP_INLINE_VISIBILITY
346 __hash_map_node_destructor(const std::__hash_node_destructor<allocator_type>& __x)
348 __first_constructed(__x.__value_constructed),
349 __second_constructed(__x.__value_constructed)
351 const_cast<bool&>(__x.__value_constructed) = false;
353 #endif // _LIBCPP_CXX03_LANG
355 _LIBCPP_INLINE_VISIBILITY
356 void operator()(pointer __p)
358 if (__second_constructed)
359 __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__get_value().second));
360 if (__first_constructed)
361 __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__get_value().first));
363 __alloc_traits::deallocate(__na_, __p, 1);
367 template <class _HashIterator>
368 class _LIBCPP_TEMPLATE_VIS __hash_map_iterator
372 typedef const typename _HashIterator::value_type::first_type key_type;
373 typedef typename _HashIterator::value_type::second_type mapped_type;
375 typedef std::forward_iterator_tag iterator_category;
376 typedef std::pair<key_type, mapped_type> value_type;
377 typedef typename _HashIterator::difference_type difference_type;
378 typedef value_type& reference;
379 typedef std::__rebind_pointer_t<typename _HashIterator::pointer, value_type>
382 _LIBCPP_INLINE_VISIBILITY __hash_map_iterator() {}
384 _LIBCPP_INLINE_VISIBILITY __hash_map_iterator(_HashIterator __i) : __i_(__i) {}
386 _LIBCPP_INLINE_VISIBILITY reference operator*() const {return *operator->();}
387 _LIBCPP_INLINE_VISIBILITY pointer operator->() const {return (pointer)__i_.operator->();}
389 _LIBCPP_INLINE_VISIBILITY __hash_map_iterator& operator++() {++__i_; return *this;}
390 _LIBCPP_INLINE_VISIBILITY
391 __hash_map_iterator operator++(int)
393 __hash_map_iterator __t(*this);
398 friend _LIBCPP_INLINE_VISIBILITY
399 bool operator==(const __hash_map_iterator& __x, const __hash_map_iterator& __y)
400 {return __x.__i_ == __y.__i_;}
401 friend _LIBCPP_INLINE_VISIBILITY
402 bool operator!=(const __hash_map_iterator& __x, const __hash_map_iterator& __y)
403 {return __x.__i_ != __y.__i_;}
405 template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS hash_map;
406 template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS hash_multimap;
407 template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
408 template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator;
409 template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator;
412 template <class _HashIterator>
413 class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator
417 typedef const typename _HashIterator::value_type::first_type key_type;
418 typedef typename _HashIterator::value_type::second_type mapped_type;
420 typedef std::forward_iterator_tag iterator_category;
421 typedef std::pair<key_type, mapped_type> value_type;
422 typedef typename _HashIterator::difference_type difference_type;
423 typedef const value_type& reference;
424 typedef std::__rebind_pointer_t<typename _HashIterator::pointer, const value_type>
427 _LIBCPP_INLINE_VISIBILITY __hash_map_const_iterator() {}
429 _LIBCPP_INLINE_VISIBILITY
430 __hash_map_const_iterator(_HashIterator __i) : __i_(__i) {}
431 _LIBCPP_INLINE_VISIBILITY
432 __hash_map_const_iterator(
433 __hash_map_iterator<typename _HashIterator::__non_const_iterator> __i)
436 _LIBCPP_INLINE_VISIBILITY
437 reference operator*() const {return *operator->();}
438 _LIBCPP_INLINE_VISIBILITY
439 pointer operator->() const {return (pointer)__i_.operator->();}
441 _LIBCPP_INLINE_VISIBILITY
442 __hash_map_const_iterator& operator++() {++__i_; return *this;}
443 _LIBCPP_INLINE_VISIBILITY
444 __hash_map_const_iterator operator++(int)
446 __hash_map_const_iterator __t(*this);
451 friend _LIBCPP_INLINE_VISIBILITY
452 bool operator==(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y)
453 {return __x.__i_ == __y.__i_;}
454 friend _LIBCPP_INLINE_VISIBILITY
455 bool operator!=(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y)
456 {return __x.__i_ != __y.__i_;}
458 template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS hash_map;
459 template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS hash_multimap;
460 template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
461 template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator;
464 template <class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>,
465 class _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
466 class _LIBCPP_TEMPLATE_VIS hash_map
470 typedef _Key key_type;
471 typedef _Tp mapped_type;
472 typedef _Tp data_type;
473 typedef _Hash hasher;
474 typedef _Pred key_equal;
475 typedef _Alloc allocator_type;
476 typedef std::pair<const key_type, mapped_type> value_type;
477 typedef value_type& reference;
478 typedef const value_type& const_reference;
481 typedef std::pair<key_type, mapped_type> __value_type;
482 typedef __hash_map_hasher<__value_type, hasher> __hasher;
483 typedef __hash_map_equal<__value_type, key_equal> __key_equal;
484 typedef std::__rebind_alloc<std::allocator_traits<allocator_type>, __value_type> __allocator_type;
486 typedef std::__hash_table<__value_type, __hasher,
487 __key_equal, __allocator_type> __table;
491 typedef typename __table::__node_pointer __node_pointer;
492 typedef typename __table::__node_const_pointer __node_const_pointer;
493 typedef typename __table::__node_traits __node_traits;
494 typedef typename __table::__node_allocator __node_allocator;
495 typedef typename __table::__node __node;
496 typedef __hash_map_node_destructor<__node_allocator> _Dp;
497 typedef std::unique_ptr<__node, _Dp> __node_holder;
498 typedef std::allocator_traits<allocator_type> __alloc_traits;
500 typedef typename __alloc_traits::pointer pointer;
501 typedef typename __alloc_traits::const_pointer const_pointer;
502 typedef typename __alloc_traits::size_type size_type;
503 typedef typename __alloc_traits::difference_type difference_type;
505 typedef __hash_map_iterator<typename __table::iterator> iterator;
506 typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
508 _LIBCPP_INLINE_VISIBILITY hash_map() { }
509 explicit _LIBCPP_HIDE_FROM_ABI hash_map(size_type __n, const hasher& __hf = hasher(),
510 const key_equal& __eql = key_equal());
511 _LIBCPP_HIDE_FROM_ABI hash_map(size_type __n, const hasher& __hf,
512 const key_equal& __eql,
513 const allocator_type& __a);
514 template <class _InputIterator>
515 _LIBCPP_HIDE_FROM_ABI hash_map(_InputIterator __first, _InputIterator __last);
516 template <class _InputIterator>
517 _LIBCPP_HIDE_FROM_ABI hash_map(_InputIterator __first, _InputIterator __last,
518 size_type __n, const hasher& __hf = hasher(),
519 const key_equal& __eql = key_equal());
520 template <class _InputIterator>
521 _LIBCPP_HIDE_FROM_ABI hash_map(_InputIterator __first, _InputIterator __last,
522 size_type __n, const hasher& __hf,
523 const key_equal& __eql,
524 const allocator_type& __a);
525 _LIBCPP_HIDE_FROM_ABI hash_map(const hash_map& __u);
527 _LIBCPP_INLINE_VISIBILITY
528 allocator_type get_allocator() const
529 {return allocator_type(__table_.__node_alloc());}
531 _LIBCPP_INLINE_VISIBILITY
532 bool empty() const {return __table_.size() == 0;}
533 _LIBCPP_INLINE_VISIBILITY
534 size_type size() const {return __table_.size();}
535 _LIBCPP_INLINE_VISIBILITY
536 size_type max_size() const {return __table_.max_size();}
538 _LIBCPP_INLINE_VISIBILITY
539 iterator begin() {return __table_.begin();}
540 _LIBCPP_INLINE_VISIBILITY
541 iterator end() {return __table_.end();}
542 _LIBCPP_INLINE_VISIBILITY
543 const_iterator begin() const {return __table_.begin();}
544 _LIBCPP_INLINE_VISIBILITY
545 const_iterator end() const {return __table_.end();}
547 _LIBCPP_INLINE_VISIBILITY
548 std::pair<iterator, bool> insert(const value_type& __x)
549 {return __table_.__insert_unique(__x);}
550 _LIBCPP_INLINE_VISIBILITY
551 iterator insert(const_iterator, const value_type& __x) {return insert(__x).first;}
552 template <class _InputIterator>
553 _LIBCPP_INLINE_VISIBILITY
554 void insert(_InputIterator __first, _InputIterator __last);
556 _LIBCPP_INLINE_VISIBILITY
557 void erase(const_iterator __p) {__table_.erase(__p.__i_);}
558 _LIBCPP_INLINE_VISIBILITY
559 size_type erase(const key_type& __k) {return __table_.__erase_unique(__k);}
560 _LIBCPP_INLINE_VISIBILITY
561 void erase(const_iterator __first, const_iterator __last)
562 {__table_.erase(__first.__i_, __last.__i_);}
563 _LIBCPP_INLINE_VISIBILITY
564 void clear() {__table_.clear();}
566 _LIBCPP_INLINE_VISIBILITY
567 void swap(hash_map& __u) {__table_.swap(__u.__table_);}
569 _LIBCPP_INLINE_VISIBILITY
570 hasher hash_funct() const
571 {return __table_.hash_function().hash_function();}
572 _LIBCPP_INLINE_VISIBILITY
573 key_equal key_eq() const
574 {return __table_.key_eq().key_eq();}
576 _LIBCPP_INLINE_VISIBILITY
577 iterator find(const key_type& __k) {return __table_.find(__k);}
578 _LIBCPP_INLINE_VISIBILITY
579 const_iterator find(const key_type& __k) const {return __table_.find(__k);}
580 _LIBCPP_INLINE_VISIBILITY
581 size_type count(const key_type& __k) const {return __table_.__count_unique(__k);}
582 _LIBCPP_INLINE_VISIBILITY
583 std::pair<iterator, iterator> equal_range(const key_type& __k)
584 {return __table_.__equal_range_unique(__k);}
585 _LIBCPP_INLINE_VISIBILITY
586 std::pair<const_iterator, const_iterator> equal_range(const key_type& __k) const
587 {return __table_.__equal_range_unique(__k);}
589 _LIBCPP_HIDE_FROM_ABI mapped_type& operator[](const key_type& __k);
591 _LIBCPP_INLINE_VISIBILITY
592 size_type bucket_count() const {return __table_.bucket_count();}
593 _LIBCPP_INLINE_VISIBILITY
594 size_type max_bucket_count() const {return __table_.max_bucket_count();}
596 _LIBCPP_INLINE_VISIBILITY
597 size_type elems_in_bucket(size_type __n) const
598 {return __table_.bucket_size(__n);}
600 _LIBCPP_INLINE_VISIBILITY
601 void resize(size_type __n) {__table_.__rehash_unique(__n);}
604 _LIBCPP_HIDE_FROM_ABI __node_holder __construct_node(const key_type& __k);
607 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
608 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
609 size_type __n, const hasher& __hf, const key_equal& __eql)
610 : __table_(__hf, __eql)
612 __table_.__rehash_unique(__n);
615 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
616 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
617 size_type __n, const hasher& __hf, const key_equal& __eql,
618 const allocator_type& __a)
619 : __table_(__hf, __eql, __a)
621 __table_.__rehash_unique(__n);
624 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
625 template <class _InputIterator>
626 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
627 _InputIterator __first, _InputIterator __last)
629 insert(__first, __last);
632 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
633 template <class _InputIterator>
634 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
635 _InputIterator __first, _InputIterator __last, size_type __n,
636 const hasher& __hf, const key_equal& __eql)
637 : __table_(__hf, __eql)
639 __table_.__rehash_unique(__n);
640 insert(__first, __last);
643 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
644 template <class _InputIterator>
645 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
646 _InputIterator __first, _InputIterator __last, size_type __n,
647 const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
648 : __table_(__hf, __eql, __a)
650 __table_.__rehash_unique(__n);
651 insert(__first, __last);
654 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
655 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_map(
657 : __table_(__u.__table_)
659 __table_.__rehash_unique(__u.bucket_count());
660 insert(__u.begin(), __u.end());
663 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
664 typename hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
665 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node(const key_type& __k)
667 __node_allocator& __na = __table_.__node_alloc();
668 __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
669 __node_traits::construct(__na, _VSTD::addressof(__h->__get_value().first), __k);
670 __h.get_deleter().__first_constructed = true;
671 __node_traits::construct(__na, _VSTD::addressof(__h->__get_value().second));
672 __h.get_deleter().__second_constructed = true;
676 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
677 template <class _InputIterator>
680 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first,
681 _InputIterator __last)
683 for (; __first != __last; ++__first)
684 __table_.__insert_unique(*__first);
687 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
689 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](const key_type& __k)
691 iterator __i = find(__k);
694 __node_holder __h = __construct_node(__k);
695 std::pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
697 return __r.first->second;
700 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
701 inline _LIBCPP_INLINE_VISIBILITY
703 swap(hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
704 hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
709 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
710 _LIBCPP_HIDE_FROM_ABI bool
711 operator==(const hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
712 const hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
714 if (__x.size() != __y.size())
716 typedef typename hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator
718 for (const_iterator __i = __x.begin(), __ex = __x.end(), __ey = __y.end();
721 const_iterator __j = __y.find(__i->first);
722 if (__j == __ey || !(*__i == *__j))
728 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
729 inline _LIBCPP_INLINE_VISIBILITY
731 operator!=(const hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
732 const hash_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
734 return !(__x == __y);
737 template <class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>,
738 class _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
739 class _LIBCPP_TEMPLATE_VIS hash_multimap
743 typedef _Key key_type;
744 typedef _Tp mapped_type;
745 typedef _Tp data_type;
746 typedef _Hash hasher;
747 typedef _Pred key_equal;
748 typedef _Alloc allocator_type;
749 typedef std::pair<const key_type, mapped_type> value_type;
750 typedef value_type& reference;
751 typedef const value_type& const_reference;
754 typedef std::pair<key_type, mapped_type> __value_type;
755 typedef __hash_map_hasher<__value_type, hasher> __hasher;
756 typedef __hash_map_equal<__value_type, key_equal> __key_equal;
757 typedef std::__rebind_alloc<std::allocator_traits<allocator_type>, __value_type> __allocator_type;
759 typedef std::__hash_table<__value_type, __hasher,
760 __key_equal, __allocator_type> __table;
764 typedef typename __table::__node_traits __node_traits;
765 typedef typename __table::__node_allocator __node_allocator;
766 typedef typename __table::__node __node;
767 typedef __hash_map_node_destructor<__node_allocator> _Dp;
768 typedef std::unique_ptr<__node, _Dp> __node_holder;
769 typedef std::allocator_traits<allocator_type> __alloc_traits;
771 typedef typename __alloc_traits::pointer pointer;
772 typedef typename __alloc_traits::const_pointer const_pointer;
773 typedef typename __alloc_traits::size_type size_type;
774 typedef typename __alloc_traits::difference_type difference_type;
776 typedef __hash_map_iterator<typename __table::iterator> iterator;
777 typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
779 _LIBCPP_INLINE_VISIBILITY
781 explicit _LIBCPP_HIDE_FROM_ABI hash_multimap(size_type __n, const hasher& __hf = hasher(),
782 const key_equal& __eql = key_equal());
783 _LIBCPP_HIDE_FROM_ABI hash_multimap(size_type __n, const hasher& __hf,
784 const key_equal& __eql,
785 const allocator_type& __a);
786 template <class _InputIterator>
787 _LIBCPP_HIDE_FROM_ABI hash_multimap(_InputIterator __first, _InputIterator __last);
788 template <class _InputIterator>
789 _LIBCPP_HIDE_FROM_ABI hash_multimap(_InputIterator __first, _InputIterator __last,
790 size_type __n, const hasher& __hf = hasher(),
791 const key_equal& __eql = key_equal());
792 template <class _InputIterator>
793 _LIBCPP_HIDE_FROM_ABI hash_multimap(_InputIterator __first, _InputIterator __last,
794 size_type __n, const hasher& __hf,
795 const key_equal& __eql,
796 const allocator_type& __a);
797 _LIBCPP_HIDE_FROM_ABI hash_multimap(const hash_multimap& __u);
799 _LIBCPP_INLINE_VISIBILITY
800 allocator_type get_allocator() const
801 {return allocator_type(__table_.__node_alloc());}
803 _LIBCPP_INLINE_VISIBILITY
804 bool empty() const {return __table_.size() == 0;}
805 _LIBCPP_INLINE_VISIBILITY
806 size_type size() const {return __table_.size();}
807 _LIBCPP_INLINE_VISIBILITY
808 size_type max_size() const {return __table_.max_size();}
810 _LIBCPP_INLINE_VISIBILITY
811 iterator begin() {return __table_.begin();}
812 _LIBCPP_INLINE_VISIBILITY
813 iterator end() {return __table_.end();}
814 _LIBCPP_INLINE_VISIBILITY
815 const_iterator begin() const {return __table_.begin();}
816 _LIBCPP_INLINE_VISIBILITY
817 const_iterator end() const {return __table_.end();}
819 _LIBCPP_INLINE_VISIBILITY
820 iterator insert(const value_type& __x) {return __table_.__insert_multi(__x);}
821 _LIBCPP_INLINE_VISIBILITY
822 iterator insert(const_iterator, const value_type& __x) {return insert(__x);}
823 template <class _InputIterator>
824 _LIBCPP_INLINE_VISIBILITY
825 void insert(_InputIterator __first, _InputIterator __last);
827 _LIBCPP_INLINE_VISIBILITY
828 void erase(const_iterator __p) {__table_.erase(__p.__i_);}
829 _LIBCPP_INLINE_VISIBILITY
830 size_type erase(const key_type& __k) {return __table_.__erase_multi(__k);}
831 _LIBCPP_INLINE_VISIBILITY
832 void erase(const_iterator __first, const_iterator __last)
833 {__table_.erase(__first.__i_, __last.__i_);}
834 _LIBCPP_INLINE_VISIBILITY
835 void clear() {__table_.clear();}
837 _LIBCPP_INLINE_VISIBILITY
838 void swap(hash_multimap& __u) {__table_.swap(__u.__table_);}
840 _LIBCPP_INLINE_VISIBILITY
841 hasher hash_funct() const
842 {return __table_.hash_function().hash_function();}
843 _LIBCPP_INLINE_VISIBILITY
844 key_equal key_eq() const
845 {return __table_.key_eq().key_eq();}
847 _LIBCPP_INLINE_VISIBILITY
848 iterator find(const key_type& __k) {return __table_.find(__k);}
849 _LIBCPP_INLINE_VISIBILITY
850 const_iterator find(const key_type& __k) const {return __table_.find(__k);}
851 _LIBCPP_INLINE_VISIBILITY
852 size_type count(const key_type& __k) const {return __table_.__count_multi(__k);}
853 _LIBCPP_INLINE_VISIBILITY
854 std::pair<iterator, iterator> equal_range(const key_type& __k)
855 {return __table_.__equal_range_multi(__k);}
856 _LIBCPP_INLINE_VISIBILITY
857 std::pair<const_iterator, const_iterator> equal_range(const key_type& __k) const
858 {return __table_.__equal_range_multi(__k);}
860 _LIBCPP_INLINE_VISIBILITY
861 size_type bucket_count() const {return __table_.bucket_count();}
862 _LIBCPP_INLINE_VISIBILITY
863 size_type max_bucket_count() const {return __table_.max_bucket_count();}
865 _LIBCPP_INLINE_VISIBILITY
866 size_type elems_in_bucket(size_type __n) const
867 {return __table_.bucket_size(__n);}
869 _LIBCPP_INLINE_VISIBILITY
870 void resize(size_type __n) {__table_.__rehash_multi(__n);}
873 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
874 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
875 size_type __n, const hasher& __hf, const key_equal& __eql)
876 : __table_(__hf, __eql)
878 __table_.__rehash_multi(__n);
881 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
882 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
883 size_type __n, const hasher& __hf, const key_equal& __eql,
884 const allocator_type& __a)
885 : __table_(__hf, __eql, __a)
887 __table_.__rehash_multi(__n);
890 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
891 template <class _InputIterator>
892 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
893 _InputIterator __first, _InputIterator __last)
895 insert(__first, __last);
898 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
899 template <class _InputIterator>
900 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
901 _InputIterator __first, _InputIterator __last, size_type __n,
902 const hasher& __hf, const key_equal& __eql)
903 : __table_(__hf, __eql)
905 __table_.__rehash_multi(__n);
906 insert(__first, __last);
909 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
910 template <class _InputIterator>
911 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
912 _InputIterator __first, _InputIterator __last, size_type __n,
913 const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
914 : __table_(__hf, __eql, __a)
916 __table_.__rehash_multi(__n);
917 insert(__first, __last);
920 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
921 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::hash_multimap(
922 const hash_multimap& __u)
923 : __table_(__u.__table_)
925 __table_.__rehash_multi(__u.bucket_count());
926 insert(__u.begin(), __u.end());
929 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
930 template <class _InputIterator>
933 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first,
934 _InputIterator __last)
936 for (; __first != __last; ++__first)
937 __table_.__insert_multi(*__first);
940 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
941 inline _LIBCPP_INLINE_VISIBILITY
943 swap(hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
944 hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
949 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
950 _LIBCPP_HIDE_FROM_ABI bool
951 operator==(const hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
952 const hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
954 if (__x.size() != __y.size())
956 typedef typename hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator
958 typedef std::pair<const_iterator, const_iterator> _EqRng;
959 for (const_iterator __i = __x.begin(), __ex = __x.end(); __i != __ex;)
961 _EqRng __xeq = __x.equal_range(__i->first);
962 _EqRng __yeq = __y.equal_range(__i->first);
963 if (_VSTD::distance(__xeq.first, __xeq.second) !=
964 _VSTD::distance(__yeq.first, __yeq.second) ||
965 !_VSTD::is_permutation(__xeq.first, __xeq.second, __yeq.first))
972 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
973 inline _LIBCPP_INLINE_VISIBILITY
975 operator!=(const hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
976 const hash_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
978 return !(__x == __y);
981 } // namespace __gnu_cxx
983 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
986 # include <type_traits>
989 #endif // _LIBCPP_HASH_MAP