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Diffstat (limited to 'Source/kwsys/hashtable.hxx.in')
| -rw-r--r-- | Source/kwsys/hashtable.hxx.in | 995 |
1 files changed, 995 insertions, 0 deletions
diff --git a/Source/kwsys/hashtable.hxx.in b/Source/kwsys/hashtable.hxx.in new file mode 100644 index 0000000..8c4b002 --- /dev/null +++ b/Source/kwsys/hashtable.hxx.in @@ -0,0 +1,995 @@ +/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying + file Copyright.txt or https://cmake.org/licensing#kwsys for details. */ +/* + * Copyright (c) 1996 + * Silicon Graphics Computer Systems, Inc. + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Silicon Graphics makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + * + * Copyright (c) 1994 + * Hewlett-Packard Company + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Hewlett-Packard Company makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + */ +#ifdef __BORLANDC__ +# pragma warn - 8027 /* 'for' not inlined. */ +# pragma warn - 8026 /* 'exception' not inlined. */ +#endif + +#ifndef @KWSYS_NAMESPACE@_hashtable_hxx +# define @KWSYS_NAMESPACE@_hashtable_hxx + +# include <@KWSYS_NAMESPACE@/Configure.hxx> + +# include <algorithm> // lower_bound +# include <iterator> // iterator_traits +# include <memory> // allocator +# include <stddef.h> // size_t +# include <utility> // pair +# include <vector> // vector + +# if defined(_MSC_VER) +# pragma warning(push) +# pragma warning(disable : 4284) +# pragma warning(disable : 4786) +# pragma warning(disable : 4512) /* no assignment operator for class */ +# endif +# if defined(__sgi) && !defined(__GNUC__) +# pragma set woff 3970 /* pointer to int conversion */ 3321 3968 +# endif + +// In C++11, clang will warn about using dynamic exception specifications +// as they are deprecated. But as this class is trying to faithfully +// mimic unordered_set and unordered_map, we want to keep the 'throw()' +// decorations below. So we suppress the warning. +# if defined(__clang__) && defined(__has_warning) +# if __has_warning("-Wdeprecated") +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wdeprecated" +# endif +# endif + +namespace @KWSYS_NAMESPACE@ { + +template <class _Val> +struct _Hashtable_node +{ + _Hashtable_node* _M_next; + _Val _M_val; + void public_method_to_quiet_warning_about_all_methods_private(); + +private: + void operator=(_Hashtable_node<_Val> const&) = delete; +}; + +template <class _Val, class _Key, class _HashFcn, class _ExtractKey, + class _EqualKey, class _Alloc = std::allocator<char> > +class hashtable; + +template <class _Val, class _Key, class _HashFcn, class _ExtractKey, + class _EqualKey, class _Alloc> +struct _Hashtable_iterator; + +template <class _Val, class _Key, class _HashFcn, class _ExtractKey, + class _EqualKey, class _Alloc> +struct _Hashtable_const_iterator; + +template <class _Val, class _Key, class _HashFcn, class _ExtractKey, + class _EqualKey, class _Alloc> +struct _Hashtable_iterator +{ + typedef hashtable<_Val, _Key, _HashFcn, _ExtractKey, _EqualKey, _Alloc> + _Hashtable; + typedef _Hashtable_iterator<_Val, _Key, _HashFcn, _ExtractKey, _EqualKey, + _Alloc> + iterator; + typedef _Hashtable_const_iterator<_Val, _Key, _HashFcn, _ExtractKey, + _EqualKey, _Alloc> + const_iterator; + typedef _Hashtable_node<_Val> _Node; + + typedef std::forward_iterator_tag iterator_category; + typedef _Val value_type; + typedef ptrdiff_t difference_type; + typedef size_t size_type; + typedef _Val& reference; + typedef _Val* pointer; + + _Node* _M_cur; + _Hashtable* _M_ht; + + _Hashtable_iterator(_Node* __n, _Hashtable* __tab) + : _M_cur(__n) + , _M_ht(__tab) + { + } + _Hashtable_iterator() {} + reference operator*() const { return _M_cur->_M_val; } + pointer operator->() const { return &(operator*()); } + iterator& operator++(); + iterator operator++(int); + bool operator==(const iterator& __it) const { return _M_cur == __it._M_cur; } + bool operator!=(const iterator& __it) const { return _M_cur != __it._M_cur; } +}; + +template <class _Val, class _Key, class _HashFcn, class _ExtractKey, + class _EqualKey, class _Alloc> +struct _Hashtable_const_iterator +{ + typedef hashtable<_Val, _Key, _HashFcn, _ExtractKey, _EqualKey, _Alloc> + _Hashtable; + typedef _Hashtable_iterator<_Val, _Key, _HashFcn, _ExtractKey, _EqualKey, + _Alloc> + iterator; + typedef _Hashtable_const_iterator<_Val, _Key, _HashFcn, _ExtractKey, + _EqualKey, _Alloc> + const_iterator; + typedef _Hashtable_node<_Val> _Node; + + typedef std::forward_iterator_tag iterator_category; + typedef _Val value_type; + typedef ptrdiff_t difference_type; + typedef size_t size_type; + typedef const _Val& reference; + typedef const _Val* pointer; + + const _Node* _M_cur; + const _Hashtable* _M_ht; + + _Hashtable_const_iterator(const _Node* __n, const _Hashtable* __tab) + : _M_cur(__n) + , _M_ht(__tab) + { + } + _Hashtable_const_iterator() {} + _Hashtable_const_iterator(const iterator& __it) + : _M_cur(__it._M_cur) + , _M_ht(__it._M_ht) + { + } + reference operator*() const { return _M_cur->_M_val; } + pointer operator->() const { return &(operator*()); } + const_iterator& operator++(); + const_iterator operator++(int); + bool operator==(const const_iterator& __it) const + { + return _M_cur == __it._M_cur; + } + bool operator!=(const const_iterator& __it) const + { + return _M_cur != __it._M_cur; + } +}; + +// Note: assumes long is at least 32 bits. +enum +{ + _stl_num_primes = 31 +}; + +// create a function with a static local to that function that returns +// the static +static inline const unsigned long* get_stl_prime_list() +{ + + static const unsigned long _stl_prime_list[_stl_num_primes] = { + 5ul, 11ul, 23ul, 53ul, 97ul, + 193ul, 389ul, 769ul, 1543ul, 3079ul, + 6151ul, 12289ul, 24593ul, 49157ul, 98317ul, + 196613ul, 393241ul, 786433ul, 1572869ul, 3145739ul, + 6291469ul, 12582917ul, 25165843ul, 50331653ul, 100663319ul, + 201326611ul, 402653189ul, 805306457ul, 1610612741ul, 3221225473ul, + 4294967291ul + }; + + return &_stl_prime_list[0]; +} + +static inline size_t _stl_next_prime(size_t __n) +{ + const unsigned long* __first = get_stl_prime_list(); + const unsigned long* __last = get_stl_prime_list() + (int)_stl_num_primes; + const unsigned long* pos = std::lower_bound(__first, __last, __n); + return pos == __last ? *(__last - 1) : *pos; +} + +// Forward declaration of operator==. + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +class hashtable; + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +bool operator==(const hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>& __ht1, + const hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>& __ht2); + +// Hashtables handle allocators a bit differently than other containers +// do. If we're using standard-conforming allocators, then a hashtable +// unconditionally has a member variable to hold its allocator, even if +// it so happens that all instances of the allocator type are identical. +// This is because, for hashtables, this extra storage is negligible. +// Additionally, a base class wouldn't serve any other purposes; it +// wouldn't, for example, simplify the exception-handling code. + +template <class _Val, class _Key, class _HashFcn, class _ExtractKey, + class _EqualKey, class _Alloc> +class hashtable +{ +public: + typedef _Key key_type; + typedef _Val value_type; + typedef _HashFcn hasher; + typedef _EqualKey key_equal; + + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef value_type* pointer; + typedef const value_type* const_pointer; + typedef value_type& reference; + typedef const value_type& const_reference; + + hasher hash_funct() const { return _M_hash; } + key_equal key_eq() const { return _M_equals; } + +private: + typedef _Hashtable_node<_Val> _Node; + +public: + typedef typename _Alloc::template rebind<_Val>::other allocator_type; + allocator_type get_allocator() const { return _M_node_allocator; } + +private: + typedef + typename _Alloc::template rebind<_Node>::other _M_node_allocator_type; + typedef + typename _Alloc::template rebind<_Node*>::other _M_node_ptr_allocator_type; + typedef std::vector<_Node*, _M_node_ptr_allocator_type> _M_buckets_type; + +private: + _M_node_allocator_type _M_node_allocator; + hasher _M_hash; + key_equal _M_equals; + _ExtractKey _M_get_key; + _M_buckets_type _M_buckets; + size_type _M_num_elements; + + _Node* _M_get_node() { return _M_node_allocator.allocate(1); } + void _M_put_node(_Node* __p) { _M_node_allocator.deallocate(__p, 1); } + +public: + typedef _Hashtable_iterator<_Val, _Key, _HashFcn, _ExtractKey, _EqualKey, + _Alloc> + iterator; + typedef _Hashtable_const_iterator<_Val, _Key, _HashFcn, _ExtractKey, + _EqualKey, _Alloc> + const_iterator; + + friend struct _Hashtable_iterator<_Val, _Key, _HashFcn, _ExtractKey, + _EqualKey, _Alloc>; + friend struct _Hashtable_const_iterator<_Val, _Key, _HashFcn, _ExtractKey, + _EqualKey, _Alloc>; + +public: + hashtable(size_type __n, const _HashFcn& __hf, const _EqualKey& __eql, + const _ExtractKey& __ext, + const allocator_type& __a = allocator_type()) + : _M_node_allocator(__a) + , _M_hash(__hf) + , _M_equals(__eql) + , _M_get_key(__ext) + , _M_buckets(__a) + , _M_num_elements(0) + { + _M_initialize_buckets(__n); + } + + hashtable(size_type __n, const _HashFcn& __hf, const _EqualKey& __eql, + const allocator_type& __a = allocator_type()) + : _M_node_allocator(__a) + , _M_hash(__hf) + , _M_equals(__eql) + , _M_get_key(_ExtractKey()) + , _M_buckets(__a) + , _M_num_elements(0) + { + _M_initialize_buckets(__n); + } + + hashtable(const hashtable& __ht) + : _M_node_allocator(__ht.get_allocator()) + , _M_hash(__ht._M_hash) + , _M_equals(__ht._M_equals) + , _M_get_key(__ht._M_get_key) + , _M_buckets(__ht.get_allocator()) + , _M_num_elements(0) + { + _M_copy_from(__ht); + } + + hashtable& operator=(const hashtable& __ht) + { + if (&__ht != this) { + clear(); + _M_hash = __ht._M_hash; + _M_equals = __ht._M_equals; + _M_get_key = __ht._M_get_key; + _M_copy_from(__ht); + } + return *this; + } + + ~hashtable() { clear(); } + + size_type size() const { return _M_num_elements; } + size_type max_size() const { return size_type(-1); } + bool empty() const { return size() == 0; } + + void swap(hashtable& __ht) + { + std::swap(_M_hash, __ht._M_hash); + std::swap(_M_equals, __ht._M_equals); + std::swap(_M_get_key, __ht._M_get_key); + _M_buckets.swap(__ht._M_buckets); + std::swap(_M_num_elements, __ht._M_num_elements); + } + + iterator begin() + { + for (size_type __n = 0; __n < _M_buckets.size(); ++__n) + if (_M_buckets[__n]) + return iterator(_M_buckets[__n], this); + return end(); + } + + iterator end() { return iterator(nullptr, this); } + + const_iterator begin() const + { + for (size_type __n = 0; __n < _M_buckets.size(); ++__n) + if (_M_buckets[__n]) + return const_iterator(_M_buckets[__n], this); + return end(); + } + + const_iterator end() const { return const_iterator(nullptr, this); } + + friend bool operator==<>(const hashtable&, const hashtable&); + +public: + size_type bucket_count() const { return _M_buckets.size(); } + + size_type max_bucket_count() const + { + return get_stl_prime_list()[(int)_stl_num_primes - 1]; + } + + size_type elems_in_bucket(size_type __bucket) const + { + size_type __result = 0; + for (_Node* __cur = _M_buckets[__bucket]; __cur; __cur = __cur->_M_next) + __result += 1; + return __result; + } + + std::pair<iterator, bool> insert_unique(const value_type& __obj) + { + resize(_M_num_elements + 1); + return insert_unique_noresize(__obj); + } + + iterator insert_equal(const value_type& __obj) + { + resize(_M_num_elements + 1); + return insert_equal_noresize(__obj); + } + + std::pair<iterator, bool> insert_unique_noresize(const value_type& __obj); + iterator insert_equal_noresize(const value_type& __obj); + + template <class _InputIterator> + void insert_unique(_InputIterator __f, _InputIterator __l) + { + insert_unique( + __f, __l, + typename std::iterator_traits<_InputIterator>::iterator_category()); + } + + template <class _InputIterator> + void insert_equal(_InputIterator __f, _InputIterator __l) + { + insert_equal( + __f, __l, + typename std::iterator_traits<_InputIterator>::iterator_category()); + } + + template <class _InputIterator> + void insert_unique(_InputIterator __f, _InputIterator __l, + std::input_iterator_tag) + { + for (; __f != __l; ++__f) + insert_unique(*__f); + } + + template <class _InputIterator> + void insert_equal(_InputIterator __f, _InputIterator __l, + std::input_iterator_tag) + { + for (; __f != __l; ++__f) + insert_equal(*__f); + } + + template <class _ForwardIterator> + void insert_unique(_ForwardIterator __f, _ForwardIterator __l, + std::forward_iterator_tag) + { + size_type __n = 0; + std::distance(__f, __l, __n); + resize(_M_num_elements + __n); + for (; __n > 0; --__n, ++__f) + insert_unique_noresize(*__f); + } + + template <class _ForwardIterator> + void insert_equal(_ForwardIterator __f, _ForwardIterator __l, + std::forward_iterator_tag) + { + size_type __n = 0; + std::distance(__f, __l, __n); + resize(_M_num_elements + __n); + for (; __n > 0; --__n, ++__f) + insert_equal_noresize(*__f); + } + + reference find_or_insert(const value_type& __obj); + + iterator find(const key_type& __key) + { + size_type __n = _M_bkt_num_key(__key); + _Node* __first; + for (__first = _M_buckets[__n]; + __first && !_M_equals(_M_get_key(__first->_M_val), __key); + __first = __first->_M_next) { + } + return iterator(__first, this); + } + + const_iterator find(const key_type& __key) const + { + size_type __n = _M_bkt_num_key(__key); + const _Node* __first; + for (__first = _M_buckets[__n]; + __first && !_M_equals(_M_get_key(__first->_M_val), __key); + __first = __first->_M_next) { + } + return const_iterator(__first, this); + } + + size_type count(const key_type& __key) const + { + const size_type __n = _M_bkt_num_key(__key); + size_type __result = 0; + + for (const _Node* __cur = _M_buckets[__n]; __cur; __cur = __cur->_M_next) + if (_M_equals(_M_get_key(__cur->_M_val), __key)) + ++__result; + return __result; + } + + std::pair<iterator, iterator> equal_range(const key_type& __key); + + std::pair<const_iterator, const_iterator> equal_range( + const key_type& __key) const; + + size_type erase(const key_type& __key); + void erase(const iterator& __it); + void erase(iterator __first, iterator __last); + + void erase(const const_iterator& __it); + void erase(const_iterator __first, const_iterator __last); + + void resize(size_type __num_elements_hint); + void clear(); + +private: + size_type _M_next_size(size_type __n) const { return _stl_next_prime(__n); } + + void _M_initialize_buckets(size_type __n) + { + const size_type __n_buckets = _M_next_size(__n); + _M_buckets.reserve(__n_buckets); + _M_buckets.insert(_M_buckets.end(), __n_buckets, (_Node*)nullptr); + _M_num_elements = 0; + } + + size_type _M_bkt_num_key(const key_type& __key) const + { + return _M_bkt_num_key(__key, _M_buckets.size()); + } + + size_type _M_bkt_num(const value_type& __obj) const + { + return _M_bkt_num_key(_M_get_key(__obj)); + } + + size_type _M_bkt_num_key(const key_type& __key, size_t __n) const + { + return _M_hash(__key) % __n; + } + + size_type _M_bkt_num(const value_type& __obj, size_t __n) const + { + return _M_bkt_num_key(_M_get_key(__obj), __n); + } + + void construct(_Val* p, const _Val& v) { new (p) _Val(v); } + void destroy(_Val* p) + { + (void)p; + p->~_Val(); + } + + _Node* _M_new_node(const value_type& __obj) + { + _Node* __n = _M_get_node(); + __n->_M_next = nullptr; + try { + construct(&__n->_M_val, __obj); + return __n; + } catch (...) { + _M_put_node(__n); + throw; + } + } + + void _M_delete_node(_Node* __n) + { + destroy(&__n->_M_val); + _M_put_node(__n); + } + + void _M_erase_bucket(const size_type __n, _Node* __first, _Node* __last); + void _M_erase_bucket(const size_type __n, _Node* __last); + + void _M_copy_from(const hashtable& __ht); +}; + +template <class _Val, class _Key, class _HF, class _ExK, class _EqK, + class _All> +_Hashtable_iterator<_Val, _Key, _HF, _ExK, _EqK, _All>& +_Hashtable_iterator<_Val, _Key, _HF, _ExK, _EqK, _All>::operator++() +{ + const _Node* __old = _M_cur; + _M_cur = _M_cur->_M_next; + if (!_M_cur) { + size_type __bucket = _M_ht->_M_bkt_num(__old->_M_val); + while (!_M_cur && ++__bucket < _M_ht->_M_buckets.size()) + _M_cur = _M_ht->_M_buckets[__bucket]; + } + return *this; +} + +template <class _Val, class _Key, class _HF, class _ExK, class _EqK, + class _All> +inline _Hashtable_iterator<_Val, _Key, _HF, _ExK, _EqK, _All> +_Hashtable_iterator<_Val, _Key, _HF, _ExK, _EqK, _All>::operator++(int) +{ + iterator __tmp = *this; + ++*this; + return __tmp; +} + +template <class _Val, class _Key, class _HF, class _ExK, class _EqK, + class _All> +_Hashtable_const_iterator<_Val, _Key, _HF, _ExK, _EqK, _All>& +_Hashtable_const_iterator<_Val, _Key, _HF, _ExK, _EqK, _All>::operator++() +{ + const _Node* __old = _M_cur; + _M_cur = _M_cur->_M_next; + if (!_M_cur) { + size_type __bucket = _M_ht->_M_bkt_num(__old->_M_val); + while (!_M_cur && ++__bucket < _M_ht->_M_buckets.size()) + _M_cur = _M_ht->_M_buckets[__bucket]; + } + return *this; +} + +template <class _Val, class _Key, class _HF, class _ExK, class _EqK, + class _All> +inline _Hashtable_const_iterator<_Val, _Key, _HF, _ExK, _EqK, _All> +_Hashtable_const_iterator<_Val, _Key, _HF, _ExK, _EqK, _All>::operator++(int) +{ + const_iterator __tmp = *this; + ++*this; + return __tmp; +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +bool operator==(const hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>& __ht1, + const hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>& __ht2) +{ + typedef typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::_Node _Node; + if (__ht1._M_buckets.size() != __ht2._M_buckets.size()) + return false; + for (int __n = 0; __n < __ht1._M_buckets.size(); ++__n) { + _Node* __cur1 = __ht1._M_buckets[__n]; + _Node* __cur2 = __ht2._M_buckets[__n]; + for (; __cur1 && __cur2 && __cur1->_M_val == __cur2->_M_val; + __cur1 = __cur1->_M_next, __cur2 = __cur2->_M_next) { + } + if (__cur1 || __cur2) + return false; + } + return true; +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +inline bool operator!=(const hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>& __ht1, + const hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>& __ht2) +{ + return !(__ht1 == __ht2); +} + +template <class _Val, class _Key, class _HF, class _Extract, class _EqKey, + class _All> +inline void swap(hashtable<_Val, _Key, _HF, _Extract, _EqKey, _All>& __ht1, + hashtable<_Val, _Key, _HF, _Extract, _EqKey, _All>& __ht2) +{ + __ht1.swap(__ht2); +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +std::pair<typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::iterator, bool> +hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::insert_unique_noresize( + const value_type& __obj) +{ + const size_type __n = _M_bkt_num(__obj); + _Node* __first = _M_buckets[__n]; + + for (_Node* __cur = __first; __cur; __cur = __cur->_M_next) + if (_M_equals(_M_get_key(__cur->_M_val), _M_get_key(__obj))) + return std::pair<iterator, bool>(iterator(__cur, this), false); + + _Node* __tmp = _M_new_node(__obj); + __tmp->_M_next = __first; + _M_buckets[__n] = __tmp; + ++_M_num_elements; + return std::pair<iterator, bool>(iterator(__tmp, this), true); +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::iterator +hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::insert_equal_noresize( + const value_type& __obj) +{ + const size_type __n = _M_bkt_num(__obj); + _Node* __first = _M_buckets[__n]; + + for (_Node* __cur = __first; __cur; __cur = __cur->_M_next) + if (_M_equals(_M_get_key(__cur->_M_val), _M_get_key(__obj))) { + _Node* __tmp = _M_new_node(__obj); + __tmp->_M_next = __cur->_M_next; + __cur->_M_next = __tmp; + ++_M_num_elements; + return iterator(__tmp, this); + } + + _Node* __tmp = _M_new_node(__obj); + __tmp->_M_next = __first; + _M_buckets[__n] = __tmp; + ++_M_num_elements; + return iterator(__tmp, this); +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::reference +hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::find_or_insert( + const value_type& __obj) +{ + resize(_M_num_elements + 1); + + size_type __n = _M_bkt_num(__obj); + _Node* __first = _M_buckets[__n]; + + for (_Node* __cur = __first; __cur; __cur = __cur->_M_next) + if (_M_equals(_M_get_key(__cur->_M_val), _M_get_key(__obj))) + return __cur->_M_val; + + _Node* __tmp = _M_new_node(__obj); + __tmp->_M_next = __first; + _M_buckets[__n] = __tmp; + ++_M_num_elements; + return __tmp->_M_val; +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +std::pair<typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::iterator, + typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::iterator> +hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::equal_range(const key_type& __key) +{ + typedef std::pair<iterator, iterator> _Pii; + const size_type __n = _M_bkt_num_key(__key); + + for (_Node* __first = _M_buckets[__n]; __first; __first = __first->_M_next) + if (_M_equals(_M_get_key(__first->_M_val), __key)) { + for (_Node* __cur = __first->_M_next; __cur; __cur = __cur->_M_next) + if (!_M_equals(_M_get_key(__cur->_M_val), __key)) + return _Pii(iterator(__first, this), iterator(__cur, this)); + for (size_type __m = __n + 1; __m < _M_buckets.size(); ++__m) + if (_M_buckets[__m]) + return _Pii(iterator(__first, this), + iterator(_M_buckets[__m], this)); + return _Pii(iterator(__first, this), end()); + } + return _Pii(end(), end()); +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +std::pair<typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::const_iterator, + typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::const_iterator> +hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::equal_range( + const key_type& __key) const +{ + typedef std::pair<const_iterator, const_iterator> _Pii; + const size_type __n = _M_bkt_num_key(__key); + + for (const _Node* __first = _M_buckets[__n]; __first; + __first = __first->_M_next) { + if (_M_equals(_M_get_key(__first->_M_val), __key)) { + for (const _Node* __cur = __first->_M_next; __cur; + __cur = __cur->_M_next) + if (!_M_equals(_M_get_key(__cur->_M_val), __key)) + return _Pii(const_iterator(__first, this), + const_iterator(__cur, this)); + for (size_type __m = __n + 1; __m < _M_buckets.size(); ++__m) + if (_M_buckets[__m]) + return _Pii(const_iterator(__first, this), + const_iterator(_M_buckets[__m], this)); + return _Pii(const_iterator(__first, this), end()); + } + } + return _Pii(end(), end()); +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +typename hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::size_type +hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::erase(const key_type& __key) +{ + const size_type __n = _M_bkt_num_key(__key); + _Node* __first = _M_buckets[__n]; + size_type __erased = 0; + + if (__first) { + _Node* __cur = __first; + _Node* __next = __cur->_M_next; + while (__next) { + if (_M_equals(_M_get_key(__next->_M_val), __key)) { + __cur->_M_next = __next->_M_next; + _M_delete_node(__next); + __next = __cur->_M_next; + ++__erased; + --_M_num_elements; + } else { + __cur = __next; + __next = __cur->_M_next; + } + } + if (_M_equals(_M_get_key(__first->_M_val), __key)) { + _M_buckets[__n] = __first->_M_next; + _M_delete_node(__first); + ++__erased; + --_M_num_elements; + } + } + return __erased; +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::erase(const iterator& __it) +{ + _Node* __p = __it._M_cur; + if (__p) { + const size_type __n = _M_bkt_num(__p->_M_val); + _Node* __cur = _M_buckets[__n]; + + if (__cur == __p) { + _M_buckets[__n] = __cur->_M_next; + _M_delete_node(__cur); + --_M_num_elements; + } else { + _Node* __next = __cur->_M_next; + while (__next) { + if (__next == __p) { + __cur->_M_next = __next->_M_next; + _M_delete_node(__next); + --_M_num_elements; + break; + } else { + __cur = __next; + __next = __cur->_M_next; + } + } + } + } +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::erase(iterator __first, + iterator __last) +{ + size_type __f_bucket = + __first._M_cur ? _M_bkt_num(__first._M_cur->_M_val) : _M_buckets.size(); + size_type __l_bucket = + __last._M_cur ? _M_bkt_num(__last._M_cur->_M_val) : _M_buckets.size(); + + if (__first._M_cur == __last._M_cur) + return; + else if (__f_bucket == __l_bucket) + _M_erase_bucket(__f_bucket, __first._M_cur, __last._M_cur); + else { + _M_erase_bucket(__f_bucket, __first._M_cur, nullptr); + for (size_type __n = __f_bucket + 1; __n < __l_bucket; ++__n) + _M_erase_bucket(__n, nullptr); + if (__l_bucket != _M_buckets.size()) + _M_erase_bucket(__l_bucket, __last._M_cur); + } +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +inline void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::erase( + const_iterator __first, const_iterator __last) +{ + erase(iterator(const_cast<_Node*>(__first._M_cur), + const_cast<hashtable*>(__first._M_ht)), + iterator(const_cast<_Node*>(__last._M_cur), + const_cast<hashtable*>(__last._M_ht))); +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +inline void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::erase( + const const_iterator& __it) +{ + erase(iterator(const_cast<_Node*>(__it._M_cur), + const_cast<hashtable*>(__it._M_ht))); +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::resize( + size_type __num_elements_hint) +{ + const size_type __old_n = _M_buckets.size(); + if (__num_elements_hint > __old_n) { + const size_type __n = _M_next_size(__num_elements_hint); + if (__n > __old_n) { + _M_buckets_type __tmp(__n, (_Node*)(nullptr), + _M_buckets.get_allocator()); + try { + for (size_type __bucket = 0; __bucket < __old_n; ++__bucket) { + _Node* __first = _M_buckets[__bucket]; + while (__first) { + size_type __new_bucket = _M_bkt_num(__first->_M_val, __n); + _M_buckets[__bucket] = __first->_M_next; + __first->_M_next = __tmp[__new_bucket]; + __tmp[__new_bucket] = __first; + __first = _M_buckets[__bucket]; + } + } + _M_buckets.swap(__tmp); + } catch (...) { + for (size_type __bucket = 0; __bucket < __tmp.size(); ++__bucket) { + while (__tmp[__bucket]) { + _Node* __next = __tmp[__bucket]->_M_next; + _M_delete_node(__tmp[__bucket]); + __tmp[__bucket] = __next; + } + } + throw; + } + } + } +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::_M_erase_bucket( + const size_type __n, _Node* __first, _Node* __last) +{ + _Node* __cur = _M_buckets[__n]; + if (__cur == __first) + _M_erase_bucket(__n, __last); + else { + _Node* __next; + for (__next = __cur->_M_next; __next != __first; + __cur = __next, __next = __cur->_M_next) + ; + while (__next != __last) { + __cur->_M_next = __next->_M_next; + _M_delete_node(__next); + __next = __cur->_M_next; + --_M_num_elements; + } + } +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::_M_erase_bucket( + const size_type __n, _Node* __last) +{ + _Node* __cur = _M_buckets[__n]; + while (__cur != __last) { + _Node* __next = __cur->_M_next; + _M_delete_node(__cur); + __cur = __next; + _M_buckets[__n] = __cur; + --_M_num_elements; + } +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::clear() +{ + for (size_type __i = 0; __i < _M_buckets.size(); ++__i) { + _Node* __cur = _M_buckets[__i]; + while (__cur != nullptr) { + _Node* __next = __cur->_M_next; + _M_delete_node(__cur); + __cur = __next; + } + _M_buckets[__i] = nullptr; + } + _M_num_elements = 0; +} + +template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> +void hashtable<_Val, _Key, _HF, _Ex, _Eq, _All>::_M_copy_from( + const hashtable& __ht) +{ + _M_buckets.clear(); + _M_buckets.reserve(__ht._M_buckets.size()); + _M_buckets.insert(_M_buckets.end(), __ht._M_buckets.size(), (_Node*)nullptr); + try { + for (size_type __i = 0; __i < __ht._M_buckets.size(); ++__i) { + const _Node* __cur = __ht._M_buckets[__i]; + if (__cur) { + _Node* __copy = _M_new_node(__cur->_M_val); + _M_buckets[__i] = __copy; + + for (_Node* __next = __cur->_M_next; __next; + __cur = __next, __next = __cur->_M_next) { + __copy->_M_next = _M_new_node(__next->_M_val); + __copy = __copy->_M_next; + } + } + } + _M_num_elements = __ht._M_num_elements; + } catch (...) { + clear(); + throw; + } +} + +} // namespace @KWSYS_NAMESPACE@ + +// Undo warning suppression. +# if defined(__clang__) && defined(__has_warning) +# if __has_warning("-Wdeprecated") +# pragma clang diagnostic pop +# endif +# endif + +# if defined(_MSC_VER) +# pragma warning(pop) +# endif + +#endif |