--- /dev/null
+// Internal header for TR1 unordered_set and unordered_map -*- C++ -*-
+
+// Copyright (C) 2007, 2008, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file tr1_impl/hashtable
+ * This is an internal header file, included by other library headers.
+ * You should not attempt to use it directly.
+ */
+
+// This header file defines std::tr1::hashtable, which is used to
+// implement std::tr1::unordered_set, std::tr1::unordered_map,
+// std::tr1::unordered_multiset, and std::tr1::unordered_multimap.
+// hashtable has many template parameters, partly to accommodate
+// the differences between those four classes and partly to
+// accommodate policy choices that go beyond TR1 specifications.
+
+// Class template hashtable attempts to encapsulate all reasonable
+// variation among hash tables that use chaining. It does not handle
+// open addressing.
+
+// References:
+// M. Austern, "A Proposal to Add Hash Tables to the Standard
+// Library (revision 4)," WG21 Document N1456=03-0039, 2003.
+// D. E. Knuth, The Art of Computer Programming, v. 3, Sorting and Searching.
+// A. Tavori and V. Dreizin, "Policy-Based Data Structures", 2004.
+// http://gcc.gnu.org/onlinedocs/libstdc++/ext/pb_ds/index.html
+
+#include <tr1_impl/hashtable_policy.h>
+
+namespace std
+{
+_GLIBCXX_BEGIN_NAMESPACE_TR1
+
+ // Class template _Hashtable, class definition.
+
+ // Meaning of class template _Hashtable's template parameters
+
+ // _Key and _Value: arbitrary CopyConstructible types.
+
+ // _Allocator: an allocator type ([lib.allocator.requirements]) whose
+ // value type is Value. As a conforming extension, we allow for
+ // value type != Value.
+
+ // _ExtractKey: function object that takes a object of type Value
+ // and returns a value of type _Key.
+
+ // _Equal: function object that takes two objects of type k and returns
+ // a bool-like value that is true if the two objects are considered equal.
+
+ // _H1: the hash function. A unary function object with argument type
+ // Key and result type size_t. Return values should be distributed
+ // over the entire range [0, numeric_limits<size_t>:::max()].
+
+ // _H2: the range-hashing function (in the terminology of Tavori and
+ // Dreizin). A binary function object whose argument types and result
+ // type are all size_t. Given arguments r and N, the return value is
+ // in the range [0, N).
+
+ // _Hash: the ranged hash function (Tavori and Dreizin). A binary function
+ // whose argument types are _Key and size_t and whose result type is
+ // size_t. Given arguments k and N, the return value is in the range
+ // [0, N). Default: hash(k, N) = h2(h1(k), N). If _Hash is anything other
+ // than the default, _H1 and _H2 are ignored.
+
+ // _RehashPolicy: Policy class with three members, all of which govern
+ // the bucket count. _M_next_bkt(n) returns a bucket count no smaller
+ // than n. _M_bkt_for_elements(n) returns a bucket count appropriate
+ // for an element count of n. _M_need_rehash(n_bkt, n_elt, n_ins)
+ // determines whether, if the current bucket count is n_bkt and the
+ // current element count is n_elt, we need to increase the bucket
+ // count. If so, returns make_pair(true, n), where n is the new
+ // bucket count. If not, returns make_pair(false, <anything>).
+
+ // ??? Right now it is hard-wired that the number of buckets never
+ // shrinks. Should we allow _RehashPolicy to change that?
+
+ // __cache_hash_code: bool. true if we store the value of the hash
+ // function along with the value. This is a time-space tradeoff.
+ // Storing it may improve lookup speed by reducing the number of times
+ // we need to call the Equal function.
+
+ // __constant_iterators: bool. true if iterator and const_iterator are
+ // both constant iterator types. This is true for unordered_set and
+ // unordered_multiset, false for unordered_map and unordered_multimap.
+
+ // __unique_keys: bool. true if the return value of _Hashtable::count(k)
+ // is always at most one, false if it may be an arbitrary number. This
+ // true for unordered_set and unordered_map, false for unordered_multiset
+ // and unordered_multimap.
+
+ template<typename _Key, typename _Value, typename _Allocator,
+ typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash,
+ typename _RehashPolicy,
+ bool __cache_hash_code,
+ bool __constant_iterators,
+ bool __unique_keys>
+ class _Hashtable
+ : public __detail::_Rehash_base<_RehashPolicy,
+ _Hashtable<_Key, _Value, _Allocator,
+ _ExtractKey,
+ _Equal, _H1, _H2, _Hash,
+ _RehashPolicy,
+ __cache_hash_code,
+ __constant_iterators,
+ __unique_keys> >,
+ public __detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, __cache_hash_code>,
+ public __detail::_Map_base<_Key, _Value, _ExtractKey, __unique_keys,
+ _Hashtable<_Key, _Value, _Allocator,
+ _ExtractKey,
+ _Equal, _H1, _H2, _Hash,
+ _RehashPolicy,
+ __cache_hash_code,
+ __constant_iterators,
+ __unique_keys> >
+ {
+ public:
+ typedef _Allocator allocator_type;
+ typedef _Value value_type;
+ typedef _Key key_type;
+ typedef _Equal key_equal;
+ // mapped_type, if present, comes from _Map_base.
+ // hasher, if present, comes from _Hash_code_base.
+ typedef typename _Allocator::difference_type difference_type;
+ typedef typename _Allocator::size_type size_type;
+ typedef typename _Allocator::pointer pointer;
+ typedef typename _Allocator::const_pointer const_pointer;
+ typedef typename _Allocator::reference reference;
+ typedef typename _Allocator::const_reference const_reference;
+
+ typedef __detail::_Node_iterator<value_type, __constant_iterators,
+ __cache_hash_code>
+ local_iterator;
+ typedef __detail::_Node_const_iterator<value_type,
+ __constant_iterators,
+ __cache_hash_code>
+ const_local_iterator;
+
+ typedef __detail::_Hashtable_iterator<value_type, __constant_iterators,
+ __cache_hash_code>
+ iterator;
+ typedef __detail::_Hashtable_const_iterator<value_type,
+ __constant_iterators,
+ __cache_hash_code>
+ const_iterator;
+
+ template<typename _Key2, typename _Value2, typename _Ex2, bool __unique2,
+ typename _Hashtable2>
+ friend struct __detail::_Map_base;
+
+ private:
+ typedef __detail::_Hash_node<_Value, __cache_hash_code> _Node;
+ typedef typename _Allocator::template rebind<_Node>::other
+ _Node_allocator_type;
+ typedef typename _Allocator::template rebind<_Node*>::other
+ _Bucket_allocator_type;
+
+ typedef typename _Allocator::template rebind<_Value>::other
+ _Value_allocator_type;
+
+ _Node_allocator_type _M_node_allocator;
+ _Node** _M_buckets;
+ size_type _M_bucket_count;
+ size_type _M_element_count;
+ _RehashPolicy _M_rehash_policy;
+
+ _Node*
+ _M_allocate_node(const value_type& __v);
+
+ void
+ _M_deallocate_node(_Node* __n);
+
+ void
+ _M_deallocate_nodes(_Node**, size_type);
+
+ _Node**
+ _M_allocate_buckets(size_type __n);
+
+ void
+ _M_deallocate_buckets(_Node**, size_type __n);
+
+ public:
+ // Constructor, destructor, assignment, swap
+ _Hashtable(size_type __bucket_hint,
+ const _H1&, const _H2&, const _Hash&,
+ const _Equal&, const _ExtractKey&,
+ const allocator_type&);
+
+ template<typename _InputIterator>
+ _Hashtable(_InputIterator __first, _InputIterator __last,
+ size_type __bucket_hint,
+ const _H1&, const _H2&, const _Hash&,
+ const _Equal&, const _ExtractKey&,
+ const allocator_type&);
+
+ _Hashtable(const _Hashtable&);
+
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ _Hashtable(_Hashtable&&);
+#endif
+
+ _Hashtable&
+ operator=(const _Hashtable&);
+
+ ~_Hashtable();
+
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ void swap(_Hashtable&&);
+#else
+ void swap(_Hashtable&);
+#endif
+
+ // Basic container operations
+ iterator
+ begin()
+ {
+ iterator __i(_M_buckets);
+ if (!__i._M_cur_node)
+ __i._M_incr_bucket();
+ return __i;
+ }
+
+ const_iterator
+ begin() const
+ {
+ const_iterator __i(_M_buckets);
+ if (!__i._M_cur_node)
+ __i._M_incr_bucket();
+ return __i;
+ }
+
+ iterator
+ end()
+ { return iterator(_M_buckets + _M_bucket_count); }
+
+ const_iterator
+ end() const
+ { return const_iterator(_M_buckets + _M_bucket_count); }
+
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ const_iterator
+ cbegin() const
+ {
+ const_iterator __i(_M_buckets);
+ if (!__i._M_cur_node)
+ __i._M_incr_bucket();
+ return __i;
+ }
+
+ const_iterator
+ cend() const
+ { return const_iterator(_M_buckets + _M_bucket_count); }
+#endif
+
+ size_type
+ size() const
+ { return _M_element_count; }
+
+ bool
+ empty() const
+ { return size() == 0; }
+
+ allocator_type
+ get_allocator() const
+ { return allocator_type(_M_node_allocator); }
+
+ _Value_allocator_type
+ _M_get_Value_allocator() const
+ { return _Value_allocator_type(_M_node_allocator); }
+
+ size_type
+ max_size() const
+ { return _M_node_allocator.max_size(); }
+
+ // Observers
+ key_equal
+ key_eq() const
+ { return this->_M_eq; }
+
+ // hash_function, if present, comes from _Hash_code_base.
+
+ // Bucket operations
+ size_type
+ bucket_count() const
+ { return _M_bucket_count; }
+
+ size_type
+ max_bucket_count() const
+ { return max_size(); }
+
+ size_type
+ bucket_size(size_type __n) const
+ { return std::distance(begin(__n), end(__n)); }
+
+ size_type
+ bucket(const key_type& __k) const
+ {
+ return this->_M_bucket_index(__k, this->_M_hash_code(__k),
+ bucket_count());
+ }
+
+ local_iterator
+ begin(size_type __n)
+ { return local_iterator(_M_buckets[__n]); }
+
+ local_iterator
+ end(size_type)
+ { return local_iterator(0); }
+
+ const_local_iterator
+ begin(size_type __n) const
+ { return const_local_iterator(_M_buckets[__n]); }
+
+ const_local_iterator
+ end(size_type) const
+ { return const_local_iterator(0); }
+
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ // DR 691.
+ const_local_iterator
+ cbegin(size_type __n) const
+ { return const_local_iterator(_M_buckets[__n]); }
+
+ const_local_iterator
+ cend(size_type) const
+ { return const_local_iterator(0); }
+#endif
+
+ float
+ load_factor() const
+ {
+ return static_cast<float>(size()) / static_cast<float>(bucket_count());
+ }
+
+ // max_load_factor, if present, comes from _Rehash_base.
+
+ // Generalization of max_load_factor. Extension, not found in TR1. Only
+ // useful if _RehashPolicy is something other than the default.
+ const _RehashPolicy&
+ __rehash_policy() const
+ { return _M_rehash_policy; }
+
+ void
+ __rehash_policy(const _RehashPolicy&);
+
+ // Lookup.
+ iterator
+ find(const key_type& __k);
+
+ const_iterator
+ find(const key_type& __k) const;
+
+ size_type
+ count(const key_type& __k) const;
+
+ std::pair<iterator, iterator>
+ equal_range(const key_type& __k);
+
+ std::pair<const_iterator, const_iterator>
+ equal_range(const key_type& __k) const;
+
+ private: // Find, insert and erase helper functions
+ // ??? This dispatching is a workaround for the fact that we don't
+ // have partial specialization of member templates; it would be
+ // better to just specialize insert on __unique_keys. There may be a
+ // cleaner workaround.
+ typedef typename __gnu_cxx::__conditional_type<__unique_keys,
+ std::pair<iterator, bool>, iterator>::__type
+ _Insert_Return_Type;
+
+ typedef typename __gnu_cxx::__conditional_type<__unique_keys,
+ std::_Select1st<_Insert_Return_Type>,
+ std::_Identity<_Insert_Return_Type>
+ >::__type
+ _Insert_Conv_Type;
+
+ _Node*
+ _M_find_node(_Node*, const key_type&,
+ typename _Hashtable::_Hash_code_type) const;
+
+ iterator
+ _M_insert_bucket(const value_type&, size_type,
+ typename _Hashtable::_Hash_code_type);
+
+ std::pair<iterator, bool>
+ _M_insert(const value_type&, std::_GLIBCXX_TR1 true_type);
+
+ iterator
+ _M_insert(const value_type&, std::_GLIBCXX_TR1 false_type);
+
+ void
+ _M_erase_node(_Node*, _Node**);
+
+ public:
+ // Insert and erase
+ _Insert_Return_Type
+ insert(const value_type& __v)
+ { return _M_insert(__v, std::_GLIBCXX_TR1 integral_constant<bool,
+ __unique_keys>()); }
+
+ iterator
+ insert(iterator, const value_type& __v)
+ { return iterator(_Insert_Conv_Type()(this->insert(__v))); }
+
+ const_iterator
+ insert(const_iterator, const value_type& __v)
+ { return const_iterator(_Insert_Conv_Type()(this->insert(__v))); }
+
+ template<typename _InputIterator>
+ void
+ insert(_InputIterator __first, _InputIterator __last);
+
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ void
+ insert(initializer_list<value_type> __l)
+ { this->insert(__l.begin(), __l.end()); }
+#endif
+
+ iterator
+ erase(iterator);
+
+ const_iterator
+ erase(const_iterator);
+
+ size_type
+ erase(const key_type&);
+
+ iterator
+ erase(iterator, iterator);
+
+ const_iterator
+ erase(const_iterator, const_iterator);
+
+ void
+ clear();
+
+ // Set number of buckets to be appropriate for container of n element.
+ void rehash(size_type __n);
+
+ private:
+ // Unconditionally change size of bucket array to n.
+ void _M_rehash(size_type __n);
+ };
+
+
+ // Definitions of class template _Hashtable's out-of-line member functions.
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::_Node*
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_allocate_node(const value_type& __v)
+ {
+ _Node* __n = _M_node_allocator.allocate(1);
+ __try
+ {
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ _M_node_allocator.construct(__n, __v);
+#else
+ _M_get_Value_allocator().construct(&__n->_M_v, __v);
+#endif
+ __n->_M_next = 0;
+ return __n;
+ }
+ __catch(...)
+ {
+ _M_node_allocator.deallocate(__n, 1);
+ __throw_exception_again;
+ }
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_deallocate_node(_Node* __n)
+ {
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ _M_node_allocator.destroy(__n);
+#else
+ _M_get_Value_allocator().destroy(&__n->_M_v);
+#endif
+ _M_node_allocator.deallocate(__n, 1);
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_deallocate_nodes(_Node** __array, size_type __n)
+ {
+ for (size_type __i = 0; __i < __n; ++__i)
+ {
+ _Node* __p = __array[__i];
+ while (__p)
+ {
+ _Node* __tmp = __p;
+ __p = __p->_M_next;
+ _M_deallocate_node(__tmp);
+ }
+ __array[__i] = 0;
+ }
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::_Node**
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_allocate_buckets(size_type __n)
+ {
+ _Bucket_allocator_type __alloc(_M_node_allocator);
+
+ // We allocate one extra bucket to hold a sentinel, an arbitrary
+ // non-null pointer. Iterator increment relies on this.
+ _Node** __p = __alloc.allocate(__n + 1);
+ std::fill(__p, __p + __n, (_Node*) 0);
+ __p[__n] = reinterpret_cast<_Node*>(0x1000);
+ return __p;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_deallocate_buckets(_Node** __p, size_type __n)
+ {
+ _Bucket_allocator_type __alloc(_M_node_allocator);
+ __alloc.deallocate(__p, __n + 1);
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _Hashtable(size_type __bucket_hint,
+ const _H1& __h1, const _H2& __h2, const _Hash& __h,
+ const _Equal& __eq, const _ExtractKey& __exk,
+ const allocator_type& __a)
+ : __detail::_Rehash_base<_RehashPolicy, _Hashtable>(),
+ __detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, __chc>(__exk, __eq,
+ __h1, __h2, __h),
+ __detail::_Map_base<_Key, _Value, _ExtractKey, __uk, _Hashtable>(),
+ _M_node_allocator(__a),
+ _M_bucket_count(0),
+ _M_element_count(0),
+ _M_rehash_policy()
+ {
+ _M_bucket_count = _M_rehash_policy._M_next_bkt(__bucket_hint);
+ _M_buckets = _M_allocate_buckets(_M_bucket_count);
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ template<typename _InputIterator>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _Hashtable(_InputIterator __f, _InputIterator __l,
+ size_type __bucket_hint,
+ const _H1& __h1, const _H2& __h2, const _Hash& __h,
+ const _Equal& __eq, const _ExtractKey& __exk,
+ const allocator_type& __a)
+ : __detail::_Rehash_base<_RehashPolicy, _Hashtable>(),
+ __detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, __chc>(__exk, __eq,
+ __h1, __h2, __h),
+ __detail::_Map_base<_Key, _Value, _ExtractKey, __uk, _Hashtable>(),
+ _M_node_allocator(__a),
+ _M_bucket_count(0),
+ _M_element_count(0),
+ _M_rehash_policy()
+ {
+ _M_bucket_count = std::max(_M_rehash_policy._M_next_bkt(__bucket_hint),
+ _M_rehash_policy.
+ _M_bkt_for_elements(__detail::
+ __distance_fw(__f,
+ __l)));
+ _M_buckets = _M_allocate_buckets(_M_bucket_count);
+ __try
+ {
+ for (; __f != __l; ++__f)
+ this->insert(*__f);
+ }
+ __catch(...)
+ {
+ clear();
+ _M_deallocate_buckets(_M_buckets, _M_bucket_count);
+ __throw_exception_again;
+ }
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _Hashtable(const _Hashtable& __ht)
+ : __detail::_Rehash_base<_RehashPolicy, _Hashtable>(__ht),
+ __detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, __chc>(__ht),
+ __detail::_Map_base<_Key, _Value, _ExtractKey, __uk, _Hashtable>(__ht),
+ _M_node_allocator(__ht._M_node_allocator),
+ _M_bucket_count(__ht._M_bucket_count),
+ _M_element_count(__ht._M_element_count),
+ _M_rehash_policy(__ht._M_rehash_policy)
+ {
+ _M_buckets = _M_allocate_buckets(_M_bucket_count);
+ __try
+ {
+ for (size_type __i = 0; __i < __ht._M_bucket_count; ++__i)
+ {
+ _Node* __n = __ht._M_buckets[__i];
+ _Node** __tail = _M_buckets + __i;
+ while (__n)
+ {
+ *__tail = _M_allocate_node(__n->_M_v);
+ this->_M_copy_code(*__tail, __n);
+ __tail = &((*__tail)->_M_next);
+ __n = __n->_M_next;
+ }
+ }
+ }
+ __catch(...)
+ {
+ clear();
+ _M_deallocate_buckets(_M_buckets, _M_bucket_count);
+ __throw_exception_again;
+ }
+ }
+
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _Hashtable(_Hashtable&& __ht)
+ : __detail::_Rehash_base<_RehashPolicy, _Hashtable>(__ht),
+ __detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, __chc>(__ht),
+ __detail::_Map_base<_Key, _Value, _ExtractKey, __uk, _Hashtable>(__ht),
+ _M_node_allocator(__ht._M_node_allocator),
+ _M_bucket_count(__ht._M_bucket_count),
+ _M_element_count(__ht._M_element_count),
+ _M_rehash_policy(__ht._M_rehash_policy),
+ _M_buckets(__ht._M_buckets)
+ {
+ size_type __n_bkt = __ht._M_rehash_policy._M_next_bkt(0);
+ __ht._M_buckets = __ht._M_allocate_buckets(__n_bkt);
+ __ht._M_bucket_count = __n_bkt;
+ __ht._M_element_count = 0;
+ __ht._M_rehash_policy = _RehashPolicy();
+ }
+#endif
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>&
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ operator=(const _Hashtable& __ht)
+ {
+ _Hashtable __tmp(__ht);
+ this->swap(__tmp);
+ return *this;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ ~_Hashtable()
+ {
+ clear();
+ _M_deallocate_buckets(_M_buckets, _M_bucket_count);
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+ swap(_Hashtable&& __x)
+#else
+ swap(_Hashtable& __x)
+#endif
+ {
+ // The only base class with member variables is hash_code_base. We
+ // define _Hash_code_base::_M_swap because different specializations
+ // have different members.
+ __detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, __chc>::_M_swap(__x);
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 431. Swapping containers with unequal allocators.
+ std::__alloc_swap<_Node_allocator_type>::_S_do_it(_M_node_allocator,
+ __x._M_node_allocator);
+
+ std::swap(_M_rehash_policy, __x._M_rehash_policy);
+ std::swap(_M_buckets, __x._M_buckets);
+ std::swap(_M_bucket_count, __x._M_bucket_count);
+ std::swap(_M_element_count, __x._M_element_count);
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ __rehash_policy(const _RehashPolicy& __pol)
+ {
+ _M_rehash_policy = __pol;
+ size_type __n_bkt = __pol._M_bkt_for_elements(_M_element_count);
+ if (__n_bkt > _M_bucket_count)
+ _M_rehash(__n_bkt);
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ find(const key_type& __k)
+ {
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ std::size_t __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+ _Node* __p = _M_find_node(_M_buckets[__n], __k, __code);
+ return __p ? iterator(__p, _M_buckets + __n) : this->end();
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::const_iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ find(const key_type& __k) const
+ {
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ std::size_t __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+ _Node* __p = _M_find_node(_M_buckets[__n], __k, __code);
+ return __p ? const_iterator(__p, _M_buckets + __n) : this->end();
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::size_type
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ count(const key_type& __k) const
+ {
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ std::size_t __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+ std::size_t __result = 0;
+ for (_Node* __p = _M_buckets[__n]; __p; __p = __p->_M_next)
+ if (this->_M_compare(__k, __code, __p))
+ ++__result;
+ return __result;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ std::pair<typename _Hashtable<_Key, _Value, _Allocator,
+ _ExtractKey, _Equal, _H1,
+ _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator,
+ typename _Hashtable<_Key, _Value, _Allocator,
+ _ExtractKey, _Equal, _H1,
+ _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ equal_range(const key_type& __k)
+ {
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ std::size_t __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+ _Node** __head = _M_buckets + __n;
+ _Node* __p = _M_find_node(*__head, __k, __code);
+
+ if (__p)
+ {
+ _Node* __p1 = __p->_M_next;
+ for (; __p1; __p1 = __p1->_M_next)
+ if (!this->_M_compare(__k, __code, __p1))
+ break;
+
+ iterator __first(__p, __head);
+ iterator __last(__p1, __head);
+ if (!__p1)
+ __last._M_incr_bucket();
+ return std::make_pair(__first, __last);
+ }
+ else
+ return std::make_pair(this->end(), this->end());
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ std::pair<typename _Hashtable<_Key, _Value, _Allocator,
+ _ExtractKey, _Equal, _H1,
+ _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::const_iterator,
+ typename _Hashtable<_Key, _Value, _Allocator,
+ _ExtractKey, _Equal, _H1,
+ _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::const_iterator>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ equal_range(const key_type& __k) const
+ {
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ std::size_t __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+ _Node** __head = _M_buckets + __n;
+ _Node* __p = _M_find_node(*__head, __k, __code);
+
+ if (__p)
+ {
+ _Node* __p1 = __p->_M_next;
+ for (; __p1; __p1 = __p1->_M_next)
+ if (!this->_M_compare(__k, __code, __p1))
+ break;
+
+ const_iterator __first(__p, __head);
+ const_iterator __last(__p1, __head);
+ if (!__p1)
+ __last._M_incr_bucket();
+ return std::make_pair(__first, __last);
+ }
+ else
+ return std::make_pair(this->end(), this->end());
+ }
+
+ // Find the node whose key compares equal to k, beginning the search
+ // at p (usually the head of a bucket). Return nil if no node is found.
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey,
+ _Equal, _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::_Node*
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_find_node(_Node* __p, const key_type& __k,
+ typename _Hashtable::_Hash_code_type __code) const
+ {
+ for (; __p; __p = __p->_M_next)
+ if (this->_M_compare(__k, __code, __p))
+ return __p;
+ return false;
+ }
+
+ // Insert v in bucket n (assumes no element with its key already present).
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_insert_bucket(const value_type& __v, size_type __n,
+ typename _Hashtable::_Hash_code_type __code)
+ {
+ std::pair<bool, std::size_t> __do_rehash
+ = _M_rehash_policy._M_need_rehash(_M_bucket_count,
+ _M_element_count, 1);
+
+ // Allocate the new node before doing the rehash so that we don't
+ // do a rehash if the allocation throws.
+ _Node* __new_node = _M_allocate_node(__v);
+
+ __try
+ {
+ if (__do_rehash.first)
+ {
+ const key_type& __k = this->_M_extract(__v);
+ __n = this->_M_bucket_index(__k, __code, __do_rehash.second);
+ _M_rehash(__do_rehash.second);
+ }
+
+ __new_node->_M_next = _M_buckets[__n];
+ this->_M_store_code(__new_node, __code);
+ _M_buckets[__n] = __new_node;
+ ++_M_element_count;
+ return iterator(__new_node, _M_buckets + __n);
+ }
+ __catch(...)
+ {
+ _M_deallocate_node(__new_node);
+ __throw_exception_again;
+ }
+ }
+
+ // Insert v if no element with its key is already present.
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ std::pair<typename _Hashtable<_Key, _Value, _Allocator,
+ _ExtractKey, _Equal, _H1,
+ _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator, bool>
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_insert(const value_type& __v, std::_GLIBCXX_TR1 true_type)
+ {
+ const key_type& __k = this->_M_extract(__v);
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ size_type __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+
+ if (_Node* __p = _M_find_node(_M_buckets[__n], __k, __code))
+ return std::make_pair(iterator(__p, _M_buckets + __n), false);
+ return std::make_pair(_M_insert_bucket(__v, __n, __code), true);
+ }
+
+ // Insert v unconditionally.
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_insert(const value_type& __v, std::_GLIBCXX_TR1 false_type)
+ {
+ std::pair<bool, std::size_t> __do_rehash
+ = _M_rehash_policy._M_need_rehash(_M_bucket_count,
+ _M_element_count, 1);
+ if (__do_rehash.first)
+ _M_rehash(__do_rehash.second);
+
+ const key_type& __k = this->_M_extract(__v);
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ size_type __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+
+ // First find the node, avoid leaking new_node if compare throws.
+ _Node* __prev = _M_find_node(_M_buckets[__n], __k, __code);
+ _Node* __new_node = _M_allocate_node(__v);
+
+ if (__prev)
+ {
+ __new_node->_M_next = __prev->_M_next;
+ __prev->_M_next = __new_node;
+ }
+ else
+ {
+ __new_node->_M_next = _M_buckets[__n];
+ _M_buckets[__n] = __new_node;
+ }
+ this->_M_store_code(__new_node, __code);
+
+ ++_M_element_count;
+ return iterator(__new_node, _M_buckets + __n);
+ }
+
+ // For erase(iterator) and erase(const_iterator).
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_erase_node(_Node* __p, _Node** __b)
+ {
+ _Node* __cur = *__b;
+ if (__cur == __p)
+ *__b = __cur->_M_next;
+ else
+ {
+ _Node* __next = __cur->_M_next;
+ while (__next != __p)
+ {
+ __cur = __next;
+ __next = __cur->_M_next;
+ }
+ __cur->_M_next = __next->_M_next;
+ }
+
+ _M_deallocate_node(__p);
+ --_M_element_count;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ template<typename _InputIterator>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ insert(_InputIterator __first, _InputIterator __last)
+ {
+ size_type __n_elt = __detail::__distance_fw(__first, __last);
+ std::pair<bool, std::size_t> __do_rehash
+ = _M_rehash_policy._M_need_rehash(_M_bucket_count,
+ _M_element_count, __n_elt);
+ if (__do_rehash.first)
+ _M_rehash(__do_rehash.second);
+
+ for (; __first != __last; ++__first)
+ this->insert(*__first);
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ erase(iterator __it)
+ {
+ iterator __result = __it;
+ ++__result;
+ _M_erase_node(__it._M_cur_node, __it._M_cur_bucket);
+ return __result;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::const_iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ erase(const_iterator __it)
+ {
+ const_iterator __result = __it;
+ ++__result;
+ _M_erase_node(__it._M_cur_node, __it._M_cur_bucket);
+ return __result;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::size_type
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ erase(const key_type& __k)
+ {
+ typename _Hashtable::_Hash_code_type __code = this->_M_hash_code(__k);
+ std::size_t __n = this->_M_bucket_index(__k, __code, _M_bucket_count);
+ size_type __result = 0;
+
+ _Node** __slot = _M_buckets + __n;
+ while (*__slot && !this->_M_compare(__k, __code, *__slot))
+ __slot = &((*__slot)->_M_next);
+
+ _Node** __saved_slot = 0;
+ while (*__slot && this->_M_compare(__k, __code, *__slot))
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 526. Is it undefined if a function in the standard changes
+ // in parameters?
+ if (&this->_M_extract((*__slot)->_M_v) != &__k)
+ {
+ _Node* __p = *__slot;
+ *__slot = __p->_M_next;
+ _M_deallocate_node(__p);
+ --_M_element_count;
+ ++__result;
+ }
+ else
+ {
+ __saved_slot = __slot;
+ __slot = &((*__slot)->_M_next);
+ }
+ }
+
+ if (__saved_slot)
+ {
+ _Node* __p = *__saved_slot;
+ *__saved_slot = __p->_M_next;
+ _M_deallocate_node(__p);
+ --_M_element_count;
+ ++__result;
+ }
+
+ return __result;
+ }
+
+ // ??? This could be optimized by taking advantage of the bucket
+ // structure, but it's not clear that it's worth doing. It probably
+ // wouldn't even be an optimization unless the load factor is large.
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ erase(iterator __first, iterator __last)
+ {
+ while (__first != __last)
+ __first = this->erase(__first);
+ return __last;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ typename _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy,
+ __chc, __cit, __uk>::const_iterator
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ erase(const_iterator __first, const_iterator __last)
+ {
+ while (__first != __last)
+ __first = this->erase(__first);
+ return __last;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ clear()
+ {
+ _M_deallocate_nodes(_M_buckets, _M_bucket_count);
+ _M_element_count = 0;
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ rehash(size_type __n)
+ {
+ _M_rehash(std::max(_M_rehash_policy._M_next_bkt(__n),
+ _M_rehash_policy._M_bkt_for_elements(_M_element_count
+ + 1)));
+ }
+
+ template<typename _Key, typename _Value,
+ typename _Allocator, typename _ExtractKey, typename _Equal,
+ typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
+ bool __chc, bool __cit, bool __uk>
+ void
+ _Hashtable<_Key, _Value, _Allocator, _ExtractKey, _Equal,
+ _H1, _H2, _Hash, _RehashPolicy, __chc, __cit, __uk>::
+ _M_rehash(size_type __n)
+ {
+ _Node** __new_array = _M_allocate_buckets(__n);
+ __try
+ {
+ for (size_type __i = 0; __i < _M_bucket_count; ++__i)
+ while (_Node* __p = _M_buckets[__i])
+ {
+ std::size_t __new_index = this->_M_bucket_index(__p, __n);
+ _M_buckets[__i] = __p->_M_next;
+ __p->_M_next = __new_array[__new_index];
+ __new_array[__new_index] = __p;
+ }
+ _M_deallocate_buckets(_M_buckets, _M_bucket_count);
+ _M_bucket_count = __n;
+ _M_buckets = __new_array;
+ }
+ __catch(...)
+ {
+ // A failure here means that a hash function threw an exception.
+ // We can't restore the previous state without calling the hash
+ // function again, so the only sensible recovery is to delete
+ // everything.
+ _M_deallocate_nodes(__new_array, __n);
+ _M_deallocate_buckets(__new_array, __n);
+ _M_deallocate_nodes(_M_buckets, _M_bucket_count);
+ _M_element_count = 0;
+ __throw_exception_again;
+ }
+ }
+
+_GLIBCXX_END_NAMESPACE_TR1
+}
projects / msp430-gcc.git / blobdiff