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Diffstat (limited to 'contrib/libstdc++/include/ext/hashtable.h')
| -rw-r--r-- | contrib/libstdc++/include/ext/hashtable.h | 1135 |
1 files changed, 0 insertions, 1135 deletions
diff --git a/contrib/libstdc++/include/ext/hashtable.h b/contrib/libstdc++/include/ext/hashtable.h deleted file mode 100644 index b3f98df2e77b..000000000000 --- a/contrib/libstdc++/include/ext/hashtable.h +++ /dev/null @@ -1,1135 +0,0 @@ -// Hashtable implementation used by containers -*- C++ -*- - -// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 -// Free Software Foundation, Inc. -// -// This file is part of the GNU ISO C++ Library. This library is free -// software; you can redistribute it and/or modify it under the -// terms of the GNU General Public License as published by the -// Free Software Foundation; either version 2, or (at your option) -// any later version. - -// This library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. - -// You should have received a copy of the GNU General Public License along -// with this library; see the file COPYING. If not, write to the Free -// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, -// USA. - -// As a special exception, you may use this file as part of a free software -// library without restriction. Specifically, if other files instantiate -// templates or use macros or inline functions from this file, or you compile -// this file and link it with other files to produce an executable, this -// file does not by itself cause the resulting executable to be covered by -// the GNU General Public License. This exception does not however -// invalidate any other reasons why the executable file might be covered by -// the GNU General Public License. - -/* - * 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. - * - */ - -/** @file ext/hashtable.h - * This file is a GNU extension to the Standard C++ Library (possibly - * containing extensions from the HP/SGI STL subset). - */ - -#ifndef _HASHTABLE_H -#define _HASHTABLE_H 1 - -// Hashtable class, used to implement the hashed associative containers -// hash_set, hash_map, hash_multiset, and hash_multimap. - -#include <vector> -#include <iterator> -#include <bits/stl_algo.h> -#include <bits/stl_function.h> -#include <ext/hash_fun.h> - -_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) - - using std::size_t; - using std::ptrdiff_t; - using std::forward_iterator_tag; - using std::input_iterator_tag; - using std::_Construct; - using std::_Destroy; - using std::distance; - using std::vector; - using std::pair; - using std::__iterator_category; - - 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 = std::allocator<_Val> > - 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; } - - 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 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 { _S_num_primes = 29 }; - - static const unsigned long __stl_prime_list[_S_num_primes] = - { - 5ul, // 5ul mini size is a Google addition - 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 + (int)_S_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<value_type>::other allocator_type; - allocator_type - get_allocator() const - { return _M_node_allocator; } - - private: - typedef typename _Alloc::template rebind<_Node>::other _Node_Alloc; - typedef typename _Alloc::template rebind<_Node*>::other _Nodeptr_Alloc; - typedef vector<_Node*, _Nodeptr_Alloc> _Vector_type; - - _Node_Alloc _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); } - - private: - hasher _M_hash; - key_equal _M_equals; - _ExtractKey _M_get_key; - _Vector_type _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()) - : _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(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); } - - template<class _Vl, class _Ky, class _HF, class _Ex, class _Eq, - class _Al> - friend bool - operator==(const hashtable<_Vl, _Ky, _HF, _Ex, _Eq, _Al>&, - const hashtable<_Vl, _Ky, _HF, _Ex, _Eq, _Al>&); - - public: - size_type - bucket_count() const - { return _M_buckets.size(); } - - size_type - max_bucket_count() const - { return __stl_prime_list[(int)_S_num_primes - 1]; } - - size_type - elems_in_bucket(size_type __bucket) const - { - size_type __result = 0; - for (_Node* __n = _M_buckets[__bucket]; __n; __n = __n->_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); - - 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 = distance(__f, __l); - 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 = distance(__f, __l); - 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; - } - - 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; - try - { - this->get_allocator().construct(&__n->_M_val, __obj); - return __n; - } - catch(...) - { - _M_put_node(__n); - __throw_exception_again; - } - } - - void - _M_delete_node(_Node* __n) - { - this->get_allocator().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 (size_t __n = 0; __n < __ht1._M_buckets.size(); ++__n) - { - _Node* __cur1 = __ht1._M_buckets[__n]; - _Node* __cur2 = __ht2._M_buckets[__n]; - // Check same length of lists - for (; __cur1 && __cur2; - __cur1 = __cur1->_M_next, __cur2 = __cur2->_M_next) - { } - if (__cur1 || __cur2) - return false; - // Now check one's elements are in the other - for (__cur1 = __ht1._M_buckets[__n] ; __cur1; - __cur1 = __cur1->_M_next) - { - bool _found__cur1 = false; - for (__cur2 = __ht2._M_buckets[__n]; - __cur2; __cur2 = __cur2->_M_next) - { - if (__cur1->_M_val == __cur2->_M_val) - { - _found__cur1 = true; - break; - } - } - if (!_found__cur1) - 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> - 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) - { - _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, 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_type __tmp(__n, (_Node*)(0), _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_exception_again; - } - } - } - } - - 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() - { - // Google addition: do not iterate over buckets when empty - if (_M_num_elements == 0) - return; - - 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); - try - { - for (size_type __i = 0; __i < __ht._M_buckets.size(); ++__i) { - const _Node* __cur = __ht._M_buckets[__i]; - if (__cur) - { - _Node* __local_copy = _M_new_node(__cur->_M_val); - _M_buckets[__i] = __local_copy; - - for (_Node* __next = __cur->_M_next; - __next; - __cur = __next, __next = __cur->_M_next) - { - __local_copy->_M_next = _M_new_node(__next->_M_val); - __local_copy = __local_copy->_M_next; - } - } - } - _M_num_elements = __ht._M_num_elements; - } - catch(...) - { - clear(); - __throw_exception_again; - } - } - -_GLIBCXX_END_NAMESPACE - -#endif |