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Diffstat (limited to 'contrib/libstdc++/stl/stl_hashtable.h')
| -rw-r--r-- | contrib/libstdc++/stl/stl_hashtable.h | 1039 |
1 files changed, 0 insertions, 1039 deletions
diff --git a/contrib/libstdc++/stl/stl_hashtable.h b/contrib/libstdc++/stl/stl_hashtable.h deleted file mode 100644 index 78b36c1..0000000 --- a/contrib/libstdc++/stl/stl_hashtable.h +++ /dev/null @@ -1,1039 +0,0 @@ -/* - * Copyright (c) 1996,1997 - * 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. - * - */ - -/* NOTE: This is an internal header file, included by other STL headers. - * You should not attempt to use it directly. - */ - -#ifndef __SGI_STL_INTERNAL_HASHTABLE_H -#define __SGI_STL_INTERNAL_HASHTABLE_H - -// Hashtable class, used to implement the hashed associative containers -// hash_set, hash_map, hash_multiset, and hash_multimap. - -#include <stl_algobase.h> -#include <stl_alloc.h> -#include <stl_construct.h> -#include <stl_tempbuf.h> -#include <stl_algo.h> -#include <stl_uninitialized.h> -#include <stl_function.h> -#include <stl_vector.h> -#include <stl_hash_fun.h> - -__STL_BEGIN_NAMESPACE - -template <class _Val> -struct _Hashtable_node -{ - _Hashtable_node* _M_next; - _Val _M_val; -}; - -template <class _Val, class _Key, class _HashFcn, - class _ExtractKey, class _EqualKey, class _Alloc = alloc> -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 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; } -#ifndef __SGI_STL_NO_ARROW_OPERATOR - pointer operator->() const { return &(operator*()); } -#endif /* __SGI_STL_NO_ARROW_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 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; } -#ifndef __SGI_STL_NO_ARROW_OPERATOR - pointer operator->() const { return &(operator*()); } -#endif /* __SGI_STL_NO_ARROW_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. -static const int __stl_num_primes = 28; -static const unsigned long __stl_prime_list[__stl_num_primes] = -{ - 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 -}; - -inline unsigned long __stl_next_prime(unsigned long __n) -{ - const unsigned long* __first = __stl_prime_list; - const unsigned long* __last = __stl_prime_list + __stl_num_primes; - const unsigned long* pos = 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; - -#ifdef __STL_USE_STD_ALLOCATORS -public: - typedef typename _Alloc_traits<_Val,_Alloc>::allocator_type allocator_type; - allocator_type get_allocator() const { return _M_node_allocator; } -private: - typename _Alloc_traits<_Node, _Alloc>::allocator_type _M_node_allocator; - _Node* _M_get_node() { return _M_node_allocator.allocate(1); } - void _M_put_node(_Node* __p) { _M_node_allocator.deallocate(__p, 1); } -# define __HASH_ALLOC_INIT(__a) _M_node_allocator(__a), -#else /* __STL_USE_STD_ALLOCATORS */ -public: - typedef _Alloc allocator_type; - allocator_type get_allocator() const { return allocator_type(); } -private: - typedef simple_alloc<_Node, _Alloc> _M_node_allocator_type; - _Node* _M_get_node() { return _M_node_allocator_type::allocate(1); } - void _M_put_node(_Node* __p) { _M_node_allocator_type::deallocate(__p, 1); } -# define __HASH_ALLOC_INIT(__a) -#endif /* __STL_USE_STD_ALLOCATORS */ - -private: - hasher _M_hash; - key_equal _M_equals; - _ExtractKey _M_get_key; - vector<_Node*,_Alloc> _M_buckets; - size_type _M_num_elements; - -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()) - : __HASH_ALLOC_INIT(__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()) - : __HASH_ALLOC_INIT(__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) - : __HASH_ALLOC_INIT(__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); - } - -#undef __HASH_ALLOC_INIT - - 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(0, 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(0, this); } - - friend bool - operator== __STL_NULL_TMPL_ARGS (const hashtable&, const hashtable&); - -public: - - size_type bucket_count() const { return _M_buckets.size(); } - - size_type max_bucket_count() const - { return __stl_prime_list[__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; - } - - 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); - } - - pair<iterator, bool> insert_unique_noresize(const value_type& __obj); - iterator insert_equal_noresize(const value_type& __obj); - -#ifdef __STL_MEMBER_TEMPLATES - template <class _InputIterator> - void insert_unique(_InputIterator __f, _InputIterator __l) - { - insert_unique(__f, __l, __ITERATOR_CATEGORY(__f)); - } - - template <class _InputIterator> - void insert_equal(_InputIterator __f, _InputIterator __l) - { - insert_equal(__f, __l, __ITERATOR_CATEGORY(__f)); - } - - template <class _InputIterator> - void insert_unique(_InputIterator __f, _InputIterator __l, - input_iterator_tag) - { - for ( ; __f != __l; ++__f) - insert_unique(*__f); - } - - template <class _InputIterator> - void insert_equal(_InputIterator __f, _InputIterator __l, - input_iterator_tag) - { - for ( ; __f != __l; ++__f) - insert_equal(*__f); - } - - template <class _ForwardIterator> - void insert_unique(_ForwardIterator __f, _ForwardIterator __l, - forward_iterator_tag) - { - size_type __n = 0; - 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, - forward_iterator_tag) - { - size_type __n = 0; - distance(__f, __l, __n); - resize(_M_num_elements + __n); - for ( ; __n > 0; --__n, ++__f) - insert_equal_noresize(*__f); - } - -#else /* __STL_MEMBER_TEMPLATES */ - void insert_unique(const value_type* __f, const value_type* __l) - { - size_type __n = __l - __f; - resize(_M_num_elements + __n); - for ( ; __n > 0; --__n, ++__f) - insert_unique_noresize(*__f); - } - - void insert_equal(const value_type* __f, const value_type* __l) - { - size_type __n = __l - __f; - resize(_M_num_elements + __n); - for ( ; __n > 0; --__n, ++__f) - insert_equal_noresize(*__f); - } - - void insert_unique(const_iterator __f, const_iterator __l) - { - size_type __n = 0; - distance(__f, __l, __n); - resize(_M_num_elements + __n); - for ( ; __n > 0; --__n, ++__f) - insert_unique_noresize(*__f); - } - - void insert_equal(const_iterator __f, const_iterator __l) - { - size_type __n = 0; - distance(__f, __l, __n); - resize(_M_num_elements + __n); - for ( ; __n > 0; --__n, ++__f) - insert_equal_noresize(*__f); - } -#endif /*__STL_MEMBER_TEMPLATES */ - - 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; - } - - pair<iterator, iterator> - equal_range(const key_type& __key); - - 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*) 0); - _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); - } - - _Node* _M_new_node(const value_type& __obj) - { - _Node* __n = _M_get_node(); - __n->_M_next = 0; - __STL_TRY { - construct(&__n->_M_val, __obj); - return __n; - } - __STL_UNWIND(_M_put_node(__n)); - } - - 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; -} - -#ifndef __STL_CLASS_PARTIAL_SPECIALIZATION - -template <class _Val, class _Key, class _HF, class _ExK, class _EqK, - class _All> -inline forward_iterator_tag -iterator_category(const _Hashtable_iterator<_Val,_Key,_HF,_ExK,_EqK,_All>&) -{ - return forward_iterator_tag(); -} - -template <class _Val, class _Key, class _HF, class _ExK, class _EqK, - class _All> -inline _Val* -value_type(const _Hashtable_iterator<_Val,_Key,_HF,_ExK,_EqK,_All>&) -{ - return (_Val*) 0; -} - -template <class _Val, class _Key, class _HF, class _ExK, class _EqK, - class _All> -inline hashtable<_Val,_Key,_HF,_ExK,_EqK,_All>::difference_type* -distance_type(const _Hashtable_iterator<_Val,_Key,_HF,_ExK,_EqK,_All>&) -{ - return (hashtable<_Val,_Key,_HF,_ExK,_EqK,_All>::difference_type*) 0; -} - -template <class _Val, class _Key, class _HF, class _ExK, class _EqK, - class _All> -inline forward_iterator_tag -iterator_category(const _Hashtable_const_iterator<_Val,_Key,_HF, - _ExK,_EqK,_All>&) -{ - return forward_iterator_tag(); -} - -template <class _Val, class _Key, class _HF, class _ExK, class _EqK, - class _All> -inline _Val* -value_type(const _Hashtable_const_iterator<_Val,_Key,_HF,_ExK,_EqK,_All>&) -{ - return (_Val*) 0; -} - -template <class _Val, class _Key, class _HF, class _ExK, class _EqK, - class _All> -inline hashtable<_Val,_Key,_HF,_ExK,_EqK,_All>::difference_type* -distance_type(const _Hashtable_const_iterator<_Val,_Key,_HF,_ExK,_EqK,_All>&) -{ - return (hashtable<_Val,_Key,_HF,_ExK,_EqK,_All>::difference_type*) 0; -} - -#endif /* __STL_CLASS_PARTIAL_SPECIALIZATION */ - -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) -{ - 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; -} - -#ifdef __STL_FUNCTION_TMPL_PARTIAL_ORDER - -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); -} - -#endif /* __STL_FUNCTION_TMPL_PARTIAL_ORDER */ - - -template <class _Val, class _Key, class _HF, class _Ex, class _Eq, class _All> -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 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 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> -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 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> -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 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) -{ - if (_Node* const __p = __it._M_cur) { - 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, 0); - for (size_type __n = __f_bucket + 1; __n < __l_bucket; ++__n) - _M_erase_bucket(__n, 0); - 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) { - vector<_Node*, _All> __tmp(__n, (_Node*)(0), - _M_buckets.get_allocator()); - __STL_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); - } -# ifdef __STL_USE_EXCEPTIONS - 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; - } -# endif /* __STL_USE_EXCEPTIONS */ - } - } -} - -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) { - __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 != 0) { - _Node* __next = __cur->_M_next; - _M_delete_node(__cur); - __cur = __next; - } - _M_buckets[__i] = 0; - } - _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*) 0); - __STL_TRY { - for (size_type __i = 0; __i < __ht._M_buckets.size(); ++__i) { - if (const _Node* __cur = __ht._M_buckets[__i]) { - _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; - } - __STL_UNWIND(clear()); -} - -__STL_END_NAMESPACE - -#endif /* __SGI_STL_INTERNAL_HASHTABLE_H */ - -// Local Variables: -// mode:C++ -// End: |
