455 lines
17 KiB
C++
455 lines
17 KiB
C++
// Hashing map implementation -*- C++ -*-
|
|
|
|
// Copyright (C) 2001, 2002 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
// 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
|
|
* 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/hash_map
|
|
* This file is a GNU extension to the Standard C++ Library (possibly
|
|
* containing extensions from the HP/SGI STL subset). You should only
|
|
* include this header if you are using GCC 3 or later.
|
|
*/
|
|
|
|
#ifndef __SGI_STL_INTERNAL_HASH_MAP_H
|
|
#define __SGI_STL_INTERNAL_HASH_MAP_H
|
|
|
|
#include <ext/stl_hashtable.h>
|
|
#include <bits/concept_check.h>
|
|
|
|
namespace __gnu_cxx
|
|
{
|
|
using std::equal_to;
|
|
using std::allocator;
|
|
using std::pair;
|
|
using std::_Select1st;
|
|
|
|
// Forward declaration of equality operator; needed for friend declaration.
|
|
|
|
template <class _Key, class _Tp,
|
|
class _HashFcn = hash<_Key>,
|
|
class _EqualKey = equal_to<_Key>,
|
|
class _Alloc = allocator<_Tp> >
|
|
class hash_map;
|
|
|
|
template <class _Key, class _Tp, class _HashFn, class _EqKey, class _Alloc>
|
|
inline bool operator==(const hash_map<_Key, _Tp, _HashFn, _EqKey, _Alloc>&,
|
|
const hash_map<_Key, _Tp, _HashFn, _EqKey, _Alloc>&);
|
|
/**
|
|
* This is an SGI extension.
|
|
* @ingroup SGIextensions
|
|
* @doctodo
|
|
*/
|
|
template <class _Key, class _Tp, class _HashFcn, class _EqualKey,
|
|
class _Alloc>
|
|
class hash_map
|
|
{
|
|
private:
|
|
typedef hashtable<pair<const _Key,_Tp>,_Key,_HashFcn,
|
|
_Select1st<pair<const _Key,_Tp> >,_EqualKey,_Alloc> _Ht;
|
|
_Ht _M_ht;
|
|
|
|
public:
|
|
typedef typename _Ht::key_type key_type;
|
|
typedef _Tp data_type;
|
|
typedef _Tp mapped_type;
|
|
typedef typename _Ht::value_type value_type;
|
|
typedef typename _Ht::hasher hasher;
|
|
typedef typename _Ht::key_equal key_equal;
|
|
|
|
typedef typename _Ht::size_type size_type;
|
|
typedef typename _Ht::difference_type difference_type;
|
|
typedef typename _Ht::pointer pointer;
|
|
typedef typename _Ht::const_pointer const_pointer;
|
|
typedef typename _Ht::reference reference;
|
|
typedef typename _Ht::const_reference const_reference;
|
|
|
|
typedef typename _Ht::iterator iterator;
|
|
typedef typename _Ht::const_iterator const_iterator;
|
|
|
|
typedef typename _Ht::allocator_type allocator_type;
|
|
|
|
hasher hash_funct() const { return _M_ht.hash_funct(); }
|
|
key_equal key_eq() const { return _M_ht.key_eq(); }
|
|
allocator_type get_allocator() const { return _M_ht.get_allocator(); }
|
|
|
|
public:
|
|
hash_map() : _M_ht(100, hasher(), key_equal(), allocator_type()) {}
|
|
explicit hash_map(size_type __n)
|
|
: _M_ht(__n, hasher(), key_equal(), allocator_type()) {}
|
|
hash_map(size_type __n, const hasher& __hf)
|
|
: _M_ht(__n, __hf, key_equal(), allocator_type()) {}
|
|
hash_map(size_type __n, const hasher& __hf, const key_equal& __eql,
|
|
const allocator_type& __a = allocator_type())
|
|
: _M_ht(__n, __hf, __eql, __a) {}
|
|
|
|
template <class _InputIterator>
|
|
hash_map(_InputIterator __f, _InputIterator __l)
|
|
: _M_ht(100, hasher(), key_equal(), allocator_type())
|
|
{ _M_ht.insert_unique(__f, __l); }
|
|
template <class _InputIterator>
|
|
hash_map(_InputIterator __f, _InputIterator __l, size_type __n)
|
|
: _M_ht(__n, hasher(), key_equal(), allocator_type())
|
|
{ _M_ht.insert_unique(__f, __l); }
|
|
template <class _InputIterator>
|
|
hash_map(_InputIterator __f, _InputIterator __l, size_type __n,
|
|
const hasher& __hf)
|
|
: _M_ht(__n, __hf, key_equal(), allocator_type())
|
|
{ _M_ht.insert_unique(__f, __l); }
|
|
template <class _InputIterator>
|
|
hash_map(_InputIterator __f, _InputIterator __l, size_type __n,
|
|
const hasher& __hf, const key_equal& __eql,
|
|
const allocator_type& __a = allocator_type())
|
|
: _M_ht(__n, __hf, __eql, __a)
|
|
{ _M_ht.insert_unique(__f, __l); }
|
|
|
|
public:
|
|
size_type size() const { return _M_ht.size(); }
|
|
size_type max_size() const { return _M_ht.max_size(); }
|
|
bool empty() const { return _M_ht.empty(); }
|
|
void swap(hash_map& __hs) { _M_ht.swap(__hs._M_ht); }
|
|
|
|
template <class _K1, class _T1, class _HF, class _EqK, class _Al>
|
|
friend bool operator== (const hash_map<_K1, _T1, _HF, _EqK, _Al>&,
|
|
const hash_map<_K1, _T1, _HF, _EqK, _Al>&);
|
|
|
|
iterator begin() { return _M_ht.begin(); }
|
|
iterator end() { return _M_ht.end(); }
|
|
const_iterator begin() const { return _M_ht.begin(); }
|
|
const_iterator end() const { return _M_ht.end(); }
|
|
|
|
public:
|
|
pair<iterator,bool> insert(const value_type& __obj)
|
|
{ return _M_ht.insert_unique(__obj); }
|
|
template <class _InputIterator>
|
|
void insert(_InputIterator __f, _InputIterator __l)
|
|
{ _M_ht.insert_unique(__f,__l); }
|
|
pair<iterator,bool> insert_noresize(const value_type& __obj)
|
|
{ return _M_ht.insert_unique_noresize(__obj); }
|
|
|
|
iterator find(const key_type& __key) { return _M_ht.find(__key); }
|
|
const_iterator find(const key_type& __key) const
|
|
{ return _M_ht.find(__key); }
|
|
|
|
_Tp& operator[](const key_type& __key) {
|
|
return _M_ht.find_or_insert(value_type(__key, _Tp())).second;
|
|
}
|
|
|
|
size_type count(const key_type& __key) const { return _M_ht.count(__key); }
|
|
|
|
pair<iterator, iterator> equal_range(const key_type& __key)
|
|
{ return _M_ht.equal_range(__key); }
|
|
pair<const_iterator, const_iterator>
|
|
equal_range(const key_type& __key) const
|
|
{ return _M_ht.equal_range(__key); }
|
|
|
|
size_type erase(const key_type& __key) {return _M_ht.erase(__key); }
|
|
void erase(iterator __it) { _M_ht.erase(__it); }
|
|
void erase(iterator __f, iterator __l) { _M_ht.erase(__f, __l); }
|
|
void clear() { _M_ht.clear(); }
|
|
|
|
void resize(size_type __hint) { _M_ht.resize(__hint); }
|
|
size_type bucket_count() const { return _M_ht.bucket_count(); }
|
|
size_type max_bucket_count() const { return _M_ht.max_bucket_count(); }
|
|
size_type elems_in_bucket(size_type __n) const
|
|
{ return _M_ht.elems_in_bucket(__n); }
|
|
};
|
|
|
|
template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
|
|
inline bool
|
|
operator==(const hash_map<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm1,
|
|
const hash_map<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm2)
|
|
{
|
|
return __hm1._M_ht == __hm2._M_ht;
|
|
}
|
|
|
|
template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
|
|
inline bool
|
|
operator!=(const hash_map<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm1,
|
|
const hash_map<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm2) {
|
|
return !(__hm1 == __hm2);
|
|
}
|
|
|
|
template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
|
|
inline void
|
|
swap(hash_map<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm1,
|
|
hash_map<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm2)
|
|
{
|
|
__hm1.swap(__hm2);
|
|
}
|
|
|
|
// Forward declaration of equality operator; needed for friend declaration.
|
|
|
|
template <class _Key, class _Tp,
|
|
class _HashFcn = hash<_Key>,
|
|
class _EqualKey = equal_to<_Key>,
|
|
class _Alloc = allocator<_Tp> >
|
|
class hash_multimap;
|
|
|
|
template <class _Key, class _Tp, class _HF, class _EqKey, class _Alloc>
|
|
inline bool
|
|
operator==(const hash_multimap<_Key,_Tp,_HF,_EqKey,_Alloc>& __hm1,
|
|
const hash_multimap<_Key,_Tp,_HF,_EqKey,_Alloc>& __hm2);
|
|
|
|
/**
|
|
* This is an SGI extension.
|
|
* @ingroup SGIextensions
|
|
* @doctodo
|
|
*/
|
|
template <class _Key, class _Tp, class _HashFcn, class _EqualKey, class _Alloc>
|
|
class hash_multimap
|
|
{
|
|
// concept requirements
|
|
__glibcpp_class_requires(_Key, _SGIAssignableConcept)
|
|
__glibcpp_class_requires(_Tp, _SGIAssignableConcept)
|
|
__glibcpp_class_requires3(_HashFcn, size_t, _Key, _UnaryFunctionConcept);
|
|
__glibcpp_class_requires3(_EqualKey, _Key, _Key, _BinaryPredicateConcept);
|
|
|
|
private:
|
|
typedef hashtable<pair<const _Key, _Tp>, _Key, _HashFcn,
|
|
_Select1st<pair<const _Key, _Tp> >, _EqualKey, _Alloc>
|
|
_Ht;
|
|
_Ht _M_ht;
|
|
|
|
public:
|
|
typedef typename _Ht::key_type key_type;
|
|
typedef _Tp data_type;
|
|
typedef _Tp mapped_type;
|
|
typedef typename _Ht::value_type value_type;
|
|
typedef typename _Ht::hasher hasher;
|
|
typedef typename _Ht::key_equal key_equal;
|
|
|
|
typedef typename _Ht::size_type size_type;
|
|
typedef typename _Ht::difference_type difference_type;
|
|
typedef typename _Ht::pointer pointer;
|
|
typedef typename _Ht::const_pointer const_pointer;
|
|
typedef typename _Ht::reference reference;
|
|
typedef typename _Ht::const_reference const_reference;
|
|
|
|
typedef typename _Ht::iterator iterator;
|
|
typedef typename _Ht::const_iterator const_iterator;
|
|
|
|
typedef typename _Ht::allocator_type allocator_type;
|
|
|
|
hasher hash_funct() const { return _M_ht.hash_funct(); }
|
|
key_equal key_eq() const { return _M_ht.key_eq(); }
|
|
allocator_type get_allocator() const { return _M_ht.get_allocator(); }
|
|
|
|
public:
|
|
hash_multimap() : _M_ht(100, hasher(), key_equal(), allocator_type()) {}
|
|
explicit hash_multimap(size_type __n)
|
|
: _M_ht(__n, hasher(), key_equal(), allocator_type()) {}
|
|
hash_multimap(size_type __n, const hasher& __hf)
|
|
: _M_ht(__n, __hf, key_equal(), allocator_type()) {}
|
|
hash_multimap(size_type __n, const hasher& __hf, const key_equal& __eql,
|
|
const allocator_type& __a = allocator_type())
|
|
: _M_ht(__n, __hf, __eql, __a) {}
|
|
|
|
template <class _InputIterator>
|
|
hash_multimap(_InputIterator __f, _InputIterator __l)
|
|
: _M_ht(100, hasher(), key_equal(), allocator_type())
|
|
{ _M_ht.insert_equal(__f, __l); }
|
|
template <class _InputIterator>
|
|
hash_multimap(_InputIterator __f, _InputIterator __l, size_type __n)
|
|
: _M_ht(__n, hasher(), key_equal(), allocator_type())
|
|
{ _M_ht.insert_equal(__f, __l); }
|
|
template <class _InputIterator>
|
|
hash_multimap(_InputIterator __f, _InputIterator __l, size_type __n,
|
|
const hasher& __hf)
|
|
: _M_ht(__n, __hf, key_equal(), allocator_type())
|
|
{ _M_ht.insert_equal(__f, __l); }
|
|
template <class _InputIterator>
|
|
hash_multimap(_InputIterator __f, _InputIterator __l, size_type __n,
|
|
const hasher& __hf, const key_equal& __eql,
|
|
const allocator_type& __a = allocator_type())
|
|
: _M_ht(__n, __hf, __eql, __a)
|
|
{ _M_ht.insert_equal(__f, __l); }
|
|
|
|
public:
|
|
size_type size() const { return _M_ht.size(); }
|
|
size_type max_size() const { return _M_ht.max_size(); }
|
|
bool empty() const { return _M_ht.empty(); }
|
|
void swap(hash_multimap& __hs) { _M_ht.swap(__hs._M_ht); }
|
|
|
|
template <class _K1, class _T1, class _HF, class _EqK, class _Al>
|
|
friend bool operator== (const hash_multimap<_K1, _T1, _HF, _EqK, _Al>&,
|
|
const hash_multimap<_K1, _T1, _HF, _EqK, _Al>&);
|
|
|
|
iterator begin() { return _M_ht.begin(); }
|
|
iterator end() { return _M_ht.end(); }
|
|
const_iterator begin() const { return _M_ht.begin(); }
|
|
const_iterator end() const { return _M_ht.end(); }
|
|
|
|
public:
|
|
iterator insert(const value_type& __obj)
|
|
{ return _M_ht.insert_equal(__obj); }
|
|
template <class _InputIterator>
|
|
void insert(_InputIterator __f, _InputIterator __l)
|
|
{ _M_ht.insert_equal(__f,__l); }
|
|
iterator insert_noresize(const value_type& __obj)
|
|
{ return _M_ht.insert_equal_noresize(__obj); }
|
|
|
|
iterator find(const key_type& __key) { return _M_ht.find(__key); }
|
|
const_iterator find(const key_type& __key) const
|
|
{ return _M_ht.find(__key); }
|
|
|
|
size_type count(const key_type& __key) const { return _M_ht.count(__key); }
|
|
|
|
pair<iterator, iterator> equal_range(const key_type& __key)
|
|
{ return _M_ht.equal_range(__key); }
|
|
pair<const_iterator, const_iterator>
|
|
equal_range(const key_type& __key) const
|
|
{ return _M_ht.equal_range(__key); }
|
|
|
|
size_type erase(const key_type& __key) {return _M_ht.erase(__key); }
|
|
void erase(iterator __it) { _M_ht.erase(__it); }
|
|
void erase(iterator __f, iterator __l) { _M_ht.erase(__f, __l); }
|
|
void clear() { _M_ht.clear(); }
|
|
|
|
public:
|
|
void resize(size_type __hint) { _M_ht.resize(__hint); }
|
|
size_type bucket_count() const { return _M_ht.bucket_count(); }
|
|
size_type max_bucket_count() const { return _M_ht.max_bucket_count(); }
|
|
size_type elems_in_bucket(size_type __n) const
|
|
{ return _M_ht.elems_in_bucket(__n); }
|
|
};
|
|
|
|
template <class _Key, class _Tp, class _HF, class _EqKey, class _Alloc>
|
|
inline bool
|
|
operator==(const hash_multimap<_Key,_Tp,_HF,_EqKey,_Alloc>& __hm1,
|
|
const hash_multimap<_Key,_Tp,_HF,_EqKey,_Alloc>& __hm2)
|
|
{
|
|
return __hm1._M_ht == __hm2._M_ht;
|
|
}
|
|
|
|
template <class _Key, class _Tp, class _HF, class _EqKey, class _Alloc>
|
|
inline bool
|
|
operator!=(const hash_multimap<_Key,_Tp,_HF,_EqKey,_Alloc>& __hm1,
|
|
const hash_multimap<_Key,_Tp,_HF,_EqKey,_Alloc>& __hm2) {
|
|
return !(__hm1 == __hm2);
|
|
}
|
|
|
|
template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
|
|
inline void
|
|
swap(hash_multimap<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm1,
|
|
hash_multimap<_Key,_Tp,_HashFcn,_EqlKey,_Alloc>& __hm2)
|
|
{
|
|
__hm1.swap(__hm2);
|
|
}
|
|
|
|
} // namespace __gnu_cxx
|
|
|
|
namespace std
|
|
{
|
|
// Specialization of insert_iterator so that it will work for hash_map
|
|
// and hash_multimap.
|
|
|
|
template <class _Key, class _Tp, class _HashFn, class _EqKey, class _Alloc>
|
|
class insert_iterator<__gnu_cxx::hash_map<_Key, _Tp, _HashFn, _EqKey, _Alloc> > {
|
|
protected:
|
|
typedef __gnu_cxx::hash_map<_Key, _Tp, _HashFn, _EqKey, _Alloc> _Container;
|
|
_Container* container;
|
|
public:
|
|
typedef _Container container_type;
|
|
typedef output_iterator_tag iterator_category;
|
|
typedef void value_type;
|
|
typedef void difference_type;
|
|
typedef void pointer;
|
|
typedef void reference;
|
|
|
|
insert_iterator(_Container& __x) : container(&__x) {}
|
|
insert_iterator(_Container& __x, typename _Container::iterator)
|
|
: container(&__x) {}
|
|
insert_iterator<_Container>&
|
|
operator=(const typename _Container::value_type& __value) {
|
|
container->insert(__value);
|
|
return *this;
|
|
}
|
|
insert_iterator<_Container>& operator*() { return *this; }
|
|
insert_iterator<_Container>& operator++() { return *this; }
|
|
insert_iterator<_Container>& operator++(int) { return *this; }
|
|
};
|
|
|
|
template <class _Key, class _Tp, class _HashFn, class _EqKey, class _Alloc>
|
|
class insert_iterator<__gnu_cxx::hash_multimap<_Key, _Tp, _HashFn, _EqKey, _Alloc> > {
|
|
protected:
|
|
typedef __gnu_cxx::hash_multimap<_Key, _Tp, _HashFn, _EqKey, _Alloc> _Container;
|
|
_Container* container;
|
|
typename _Container::iterator iter;
|
|
public:
|
|
typedef _Container container_type;
|
|
typedef output_iterator_tag iterator_category;
|
|
typedef void value_type;
|
|
typedef void difference_type;
|
|
typedef void pointer;
|
|
typedef void reference;
|
|
|
|
insert_iterator(_Container& __x) : container(&__x) {}
|
|
insert_iterator(_Container& __x, typename _Container::iterator)
|
|
: container(&__x) {}
|
|
insert_iterator<_Container>&
|
|
operator=(const typename _Container::value_type& __value) {
|
|
container->insert(__value);
|
|
return *this;
|
|
}
|
|
insert_iterator<_Container>& operator*() { return *this; }
|
|
insert_iterator<_Container>& operator++() { return *this; }
|
|
insert_iterator<_Container>& operator++(int) { return *this; }
|
|
};
|
|
|
|
} // namespace std
|
|
|
|
#endif /* __SGI_STL_INTERNAL_HASH_MAP_H */
|
|
|
|
// Local Variables:
|
|
// mode:C++
|
|
// End:
|