ab65a4c7bd
2010-02-10 Paolo Carlini <paolo.carlini@oracle.com> * include/tr1/hashtable.h: Fold in include/tr1_impl/hashtable.h contents. * include/tr1_impl/hashtable.h: Remove. * include/tr1_impl/hashtable_policy.h: Move and rename... * include/tr1/hashtable_policy.h: ... here. * include/tr1_impl/unordered_map: Move and rename... * include/tr1/unordered_map.h: ... here. * include/tr1_impl/unordered_set: Move and rename... * include/tr1/unordered_set.h: ... here. * include/tr1_impl/unordered_map: Move and rename... * include/tr1/unordered_map.h: ... here. * include/tr1/unordered_map: Adjust. * include/tr1/unordered_set: Likewise. * include/Makefile.am: Adjust. * include/Makefile.in: Regenerate. * include/std/c++0x_warning.h: Move... * include/bits/c++0x_warning.h: ... here. * include/debug/unordered_map: Adjust. * include/debug/unordered_set: Likewise. * include/std/tuple: Likewise. * include/std/system_error: Likewise. * include/std/forward_list: Likewise. * include/std/thread: Likewise. * include/std/type_traits: Likewise. * include/std/future: Likewise. * include/std/regex: Likewise. * include/std/atomic: Likewise. * include/std/ratio: Likewise. * include/std/random: Likewise. * include/std/unordered_map: Likewise. * include/std/chrono: Likewise.: Likewise. * include/std/condition_variable: Likewise. * include/std/mutex: Likewise. * include/std/unordered_set: Likewise. * include/std/array: Likewise. * include/profile/unordered_map: Likewise. * include/profile/unordered_set: Likewise. * include/c_global/cinttypes: Likewise. * include/c_global/ctgmath: Likewise. * include/c_global/cfenv: Likewise. * include/c_global/cstdint: Likewise. * include/c_global/cstdbool: Likewise. * include/c_global/ccomplex: Likewise. * include/bits/shared_ptr.h: Do not include <bits/c++0x_warning.h> at all, the file is not meant to be included by the users. * include/bits/functional_hash.h: Likewise. * include/bits/unique_ptr.h: Likewise. * include/bits/forward_list.h: Likewise. * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust dg-* line numbers. * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise. * testsuite/23_containers/forward_list/requirements/dr438/ assign_neg.cc: Likewise. * testsuite/23_containers/forward_list/requirements/dr438/ insert_neg.cc: Likewise. * testsuite/23_containers/forward_list/requirements/dr438/ constructor_1_neg.cc: Likewise. * testsuite/23_containers/forward_list/requirements/dr438/ constructor_2_neg.cc: Likewise. * testsuite/20_util/unique_ptr/modifiers/reset_neg.cc: Likewise. * testsuite/20_util/unique_ptr/assign/assign_neg.cc: Likewise. From-SVN: r156667
1177 lines
41 KiB
C++
1177 lines
41 KiB
C++
// TR1 hashtable.h header -*- C++ -*-
|
|
|
|
// Copyright (C) 2007, 2009, 2010 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/hashtable.h
|
|
* This is an internal header file, included by other library headers.
|
|
* You should not attempt to use it directly.
|
|
*/
|
|
|
|
#ifndef _GLIBCXX_TR1_HASHTABLE_H
|
|
#define _GLIBCXX_TR1_HASHTABLE_H 1
|
|
|
|
#pragma GCC system_header
|
|
|
|
#include <tr1/hashtable_policy.h>
|
|
|
|
namespace std
|
|
{
|
|
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&);
|
|
|
|
_Hashtable&
|
|
operator=(const _Hashtable&);
|
|
|
|
~_Hashtable();
|
|
|
|
void swap(_Hashtable&);
|
|
|
|
// 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); }
|
|
|
|
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); }
|
|
|
|
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::tr1::true_type);
|
|
|
|
iterator
|
|
_M_insert(const value_type&, std::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::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);
|
|
|
|
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
|
|
{
|
|
_M_get_Value_allocator().construct(&__n->_M_v, __v);
|
|
__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)
|
|
{
|
|
_M_get_Value_allocator().destroy(&__n->_M_v);
|
|
_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;
|
|
}
|
|
}
|
|
|
|
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>::
|
|
swap(_Hashtable& __x)
|
|
{
|
|
// 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::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::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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif // _GLIBCXX_TR1_HASHTABLE_H
|