446 lines
16 KiB
C++
446 lines
16 KiB
C++
// Hashing set implementation -*- C++ -*-
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// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/*
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* Copyright (c) 1996
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*/
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/** @file ext/hash_set
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* This file is a GNU extension to the Standard C++ Library (possibly
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* containing extensions from the HP/SGI STL subset). You should only
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* include this header if you are using GCC 3 or later.
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*/
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#ifndef __SGI_STL_INTERNAL_HASH_SET_H
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#define __SGI_STL_INTERNAL_HASH_SET_H
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#include <ext/stl_hashtable.h>
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#include <bits/concept_check.h>
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namespace __gnu_cxx
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{
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using std::equal_to;
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using std::allocator;
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using std::pair;
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using std::_Identity;
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// Forward declaration of equality operator; needed for friend declaration.
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template <class _Value,
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class _HashFcn = hash<_Value>,
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class _EqualKey = equal_to<_Value>,
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class _Alloc = allocator<_Value> >
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class hash_set;
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template <class _Value, class _HashFcn, class _EqualKey, class _Alloc>
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inline bool
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operator==(const hash_set<_Value,_HashFcn,_EqualKey,_Alloc>& __hs1,
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const hash_set<_Value,_HashFcn,_EqualKey,_Alloc>& __hs2);
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/**
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* This is an SGI extension.
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* @ingroup SGIextensions
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* @doctodo
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*/
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template <class _Value, class _HashFcn, class _EqualKey, class _Alloc>
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class hash_set
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{
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// concept requirements
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__glibcpp_class_requires(_Value, _SGIAssignableConcept)
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__glibcpp_class_requires3(_HashFcn, size_t, _Value, _UnaryFunctionConcept);
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__glibcpp_class_requires3(_EqualKey, _Value, _Value, _BinaryPredicateConcept);
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private:
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typedef hashtable<_Value, _Value, _HashFcn, _Identity<_Value>,
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_EqualKey, _Alloc> _Ht;
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_Ht _M_ht;
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public:
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typedef typename _Ht::key_type key_type;
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typedef typename _Ht::value_type value_type;
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typedef typename _Ht::hasher hasher;
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typedef typename _Ht::key_equal key_equal;
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typedef typename _Ht::size_type size_type;
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typedef typename _Ht::difference_type difference_type;
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typedef typename _Ht::const_pointer pointer;
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typedef typename _Ht::const_pointer const_pointer;
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typedef typename _Ht::const_reference reference;
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typedef typename _Ht::const_reference const_reference;
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typedef typename _Ht::const_iterator iterator;
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typedef typename _Ht::const_iterator const_iterator;
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typedef typename _Ht::allocator_type allocator_type;
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hasher hash_funct() const { return _M_ht.hash_funct(); }
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key_equal key_eq() const { return _M_ht.key_eq(); }
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allocator_type get_allocator() const { return _M_ht.get_allocator(); }
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public:
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hash_set()
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: _M_ht(100, hasher(), key_equal(), allocator_type()) {}
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explicit hash_set(size_type __n)
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: _M_ht(__n, hasher(), key_equal(), allocator_type()) {}
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hash_set(size_type __n, const hasher& __hf)
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: _M_ht(__n, __hf, key_equal(), allocator_type()) {}
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hash_set(size_type __n, const hasher& __hf, const key_equal& __eql,
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const allocator_type& __a = allocator_type())
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: _M_ht(__n, __hf, __eql, __a) {}
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template <class _InputIterator>
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hash_set(_InputIterator __f, _InputIterator __l)
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: _M_ht(100, hasher(), key_equal(), allocator_type())
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{ _M_ht.insert_unique(__f, __l); }
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template <class _InputIterator>
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hash_set(_InputIterator __f, _InputIterator __l, size_type __n)
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: _M_ht(__n, hasher(), key_equal(), allocator_type())
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{ _M_ht.insert_unique(__f, __l); }
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template <class _InputIterator>
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hash_set(_InputIterator __f, _InputIterator __l, size_type __n,
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const hasher& __hf)
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: _M_ht(__n, __hf, key_equal(), allocator_type())
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{ _M_ht.insert_unique(__f, __l); }
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template <class _InputIterator>
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hash_set(_InputIterator __f, _InputIterator __l, size_type __n,
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const hasher& __hf, const key_equal& __eql,
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const allocator_type& __a = allocator_type())
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: _M_ht(__n, __hf, __eql, __a)
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{ _M_ht.insert_unique(__f, __l); }
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public:
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size_type size() const { return _M_ht.size(); }
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size_type max_size() const { return _M_ht.max_size(); }
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bool empty() const { return _M_ht.empty(); }
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void swap(hash_set& __hs) { _M_ht.swap(__hs._M_ht); }
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template <class _Val, class _HF, class _EqK, class _Al>
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friend bool operator== (const hash_set<_Val, _HF, _EqK, _Al>&,
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const hash_set<_Val, _HF, _EqK, _Al>&);
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iterator begin() const { return _M_ht.begin(); }
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iterator end() const { return _M_ht.end(); }
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public:
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pair<iterator, bool> insert(const value_type& __obj)
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{
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pair<typename _Ht::iterator, bool> __p = _M_ht.insert_unique(__obj);
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return pair<iterator,bool>(__p.first, __p.second);
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}
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template <class _InputIterator>
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void insert(_InputIterator __f, _InputIterator __l)
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{ _M_ht.insert_unique(__f,__l); }
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pair<iterator, bool> insert_noresize(const value_type& __obj)
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{
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pair<typename _Ht::iterator, bool> __p =
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_M_ht.insert_unique_noresize(__obj);
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return pair<iterator, bool>(__p.first, __p.second);
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}
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iterator find(const key_type& __key) const { return _M_ht.find(__key); }
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size_type count(const key_type& __key) const { return _M_ht.count(__key); }
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pair<iterator, iterator> equal_range(const key_type& __key) const
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{ return _M_ht.equal_range(__key); }
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size_type erase(const key_type& __key) {return _M_ht.erase(__key); }
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void erase(iterator __it) { _M_ht.erase(__it); }
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void erase(iterator __f, iterator __l) { _M_ht.erase(__f, __l); }
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void clear() { _M_ht.clear(); }
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public:
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void resize(size_type __hint) { _M_ht.resize(__hint); }
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size_type bucket_count() const { return _M_ht.bucket_count(); }
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size_type max_bucket_count() const { return _M_ht.max_bucket_count(); }
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size_type elems_in_bucket(size_type __n) const
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{ return _M_ht.elems_in_bucket(__n); }
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};
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template <class _Value, class _HashFcn, class _EqualKey, class _Alloc>
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inline bool
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operator==(const hash_set<_Value,_HashFcn,_EqualKey,_Alloc>& __hs1,
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const hash_set<_Value,_HashFcn,_EqualKey,_Alloc>& __hs2)
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{
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return __hs1._M_ht == __hs2._M_ht;
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}
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template <class _Value, class _HashFcn, class _EqualKey, class _Alloc>
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inline bool
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operator!=(const hash_set<_Value,_HashFcn,_EqualKey,_Alloc>& __hs1,
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const hash_set<_Value,_HashFcn,_EqualKey,_Alloc>& __hs2) {
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return !(__hs1 == __hs2);
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}
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template <class _Val, class _HashFcn, class _EqualKey, class _Alloc>
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inline void
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swap(hash_set<_Val,_HashFcn,_EqualKey,_Alloc>& __hs1,
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hash_set<_Val,_HashFcn,_EqualKey,_Alloc>& __hs2)
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{
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__hs1.swap(__hs2);
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}
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template <class _Value,
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class _HashFcn = hash<_Value>,
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class _EqualKey = equal_to<_Value>,
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class _Alloc = allocator<_Value> >
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class hash_multiset;
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template <class _Val, class _HashFcn, class _EqualKey, class _Alloc>
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inline bool
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operator==(const hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs1,
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const hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs2);
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/**
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* This is an SGI extension.
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* @ingroup SGIextensions
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* @doctodo
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*/
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template <class _Value, class _HashFcn, class _EqualKey, class _Alloc>
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class hash_multiset
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{
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// concept requirements
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__glibcpp_class_requires(_Value, _SGIAssignableConcept)
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__glibcpp_class_requires3(_HashFcn, size_t, _Value, _UnaryFunctionConcept);
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__glibcpp_class_requires3(_EqualKey, _Value, _Value, _BinaryPredicateConcept);
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private:
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typedef hashtable<_Value, _Value, _HashFcn, _Identity<_Value>,
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_EqualKey, _Alloc> _Ht;
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_Ht _M_ht;
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public:
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typedef typename _Ht::key_type key_type;
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typedef typename _Ht::value_type value_type;
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typedef typename _Ht::hasher hasher;
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typedef typename _Ht::key_equal key_equal;
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typedef typename _Ht::size_type size_type;
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typedef typename _Ht::difference_type difference_type;
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typedef typename _Ht::const_pointer pointer;
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typedef typename _Ht::const_pointer const_pointer;
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typedef typename _Ht::const_reference reference;
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typedef typename _Ht::const_reference const_reference;
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typedef typename _Ht::const_iterator iterator;
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typedef typename _Ht::const_iterator const_iterator;
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typedef typename _Ht::allocator_type allocator_type;
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hasher hash_funct() const { return _M_ht.hash_funct(); }
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key_equal key_eq() const { return _M_ht.key_eq(); }
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allocator_type get_allocator() const { return _M_ht.get_allocator(); }
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public:
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hash_multiset()
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: _M_ht(100, hasher(), key_equal(), allocator_type()) {}
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explicit hash_multiset(size_type __n)
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: _M_ht(__n, hasher(), key_equal(), allocator_type()) {}
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hash_multiset(size_type __n, const hasher& __hf)
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: _M_ht(__n, __hf, key_equal(), allocator_type()) {}
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hash_multiset(size_type __n, const hasher& __hf, const key_equal& __eql,
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const allocator_type& __a = allocator_type())
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: _M_ht(__n, __hf, __eql, __a) {}
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template <class _InputIterator>
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hash_multiset(_InputIterator __f, _InputIterator __l)
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: _M_ht(100, hasher(), key_equal(), allocator_type())
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{ _M_ht.insert_equal(__f, __l); }
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template <class _InputIterator>
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hash_multiset(_InputIterator __f, _InputIterator __l, size_type __n)
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: _M_ht(__n, hasher(), key_equal(), allocator_type())
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{ _M_ht.insert_equal(__f, __l); }
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template <class _InputIterator>
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hash_multiset(_InputIterator __f, _InputIterator __l, size_type __n,
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const hasher& __hf)
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: _M_ht(__n, __hf, key_equal(), allocator_type())
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{ _M_ht.insert_equal(__f, __l); }
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template <class _InputIterator>
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hash_multiset(_InputIterator __f, _InputIterator __l, size_type __n,
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const hasher& __hf, const key_equal& __eql,
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const allocator_type& __a = allocator_type())
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: _M_ht(__n, __hf, __eql, __a)
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{ _M_ht.insert_equal(__f, __l); }
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public:
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size_type size() const { return _M_ht.size(); }
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size_type max_size() const { return _M_ht.max_size(); }
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bool empty() const { return _M_ht.empty(); }
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void swap(hash_multiset& hs) { _M_ht.swap(hs._M_ht); }
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template <class _Val, class _HF, class _EqK, class _Al>
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friend bool operator== (const hash_multiset<_Val, _HF, _EqK, _Al>&,
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const hash_multiset<_Val, _HF, _EqK, _Al>&);
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iterator begin() const { return _M_ht.begin(); }
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iterator end() const { return _M_ht.end(); }
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public:
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iterator insert(const value_type& __obj)
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{ return _M_ht.insert_equal(__obj); }
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template <class _InputIterator>
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void insert(_InputIterator __f, _InputIterator __l)
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{ _M_ht.insert_equal(__f,__l); }
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iterator insert_noresize(const value_type& __obj)
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{ return _M_ht.insert_equal_noresize(__obj); }
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iterator find(const key_type& __key) const { return _M_ht.find(__key); }
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size_type count(const key_type& __key) const { return _M_ht.count(__key); }
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pair<iterator, iterator> equal_range(const key_type& __key) const
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{ return _M_ht.equal_range(__key); }
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size_type erase(const key_type& __key) {return _M_ht.erase(__key); }
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void erase(iterator __it) { _M_ht.erase(__it); }
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void erase(iterator __f, iterator __l) { _M_ht.erase(__f, __l); }
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void clear() { _M_ht.clear(); }
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public:
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void resize(size_type __hint) { _M_ht.resize(__hint); }
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size_type bucket_count() const { return _M_ht.bucket_count(); }
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size_type max_bucket_count() const { return _M_ht.max_bucket_count(); }
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size_type elems_in_bucket(size_type __n) const
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{ return _M_ht.elems_in_bucket(__n); }
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};
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template <class _Val, class _HashFcn, class _EqualKey, class _Alloc>
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inline bool
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operator==(const hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs1,
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const hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs2)
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{
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return __hs1._M_ht == __hs2._M_ht;
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}
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template <class _Val, class _HashFcn, class _EqualKey, class _Alloc>
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inline bool
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operator!=(const hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs1,
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const hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs2) {
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return !(__hs1 == __hs2);
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}
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template <class _Val, class _HashFcn, class _EqualKey, class _Alloc>
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inline void
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swap(hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs1,
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hash_multiset<_Val,_HashFcn,_EqualKey,_Alloc>& __hs2) {
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__hs1.swap(__hs2);
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}
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} // namespace __gnu_cxx
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namespace std
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{
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// Specialization of insert_iterator so that it will work for hash_set
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// and hash_multiset.
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template <class _Value, class _HashFcn, class _EqualKey, class _Alloc>
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class insert_iterator<__gnu_cxx::hash_set<_Value, _HashFcn, _EqualKey, _Alloc> > {
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protected:
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typedef __gnu_cxx::hash_set<_Value, _HashFcn, _EqualKey, _Alloc> _Container;
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_Container* container;
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public:
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typedef _Container container_type;
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typedef output_iterator_tag iterator_category;
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typedef void value_type;
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typedef void difference_type;
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typedef void pointer;
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typedef void reference;
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insert_iterator(_Container& __x) : container(&__x) {}
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insert_iterator(_Container& __x, typename _Container::iterator)
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: container(&__x) {}
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insert_iterator<_Container>&
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operator=(const typename _Container::value_type& __value) {
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container->insert(__value);
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return *this;
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}
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insert_iterator<_Container>& operator*() { return *this; }
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insert_iterator<_Container>& operator++() { return *this; }
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insert_iterator<_Container>& operator++(int) { return *this; }
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};
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template <class _Value, class _HashFcn, class _EqualKey, class _Alloc>
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class insert_iterator<__gnu_cxx::hash_multiset<_Value, _HashFcn, _EqualKey, _Alloc> > {
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protected:
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typedef __gnu_cxx::hash_multiset<_Value, _HashFcn, _EqualKey, _Alloc> _Container;
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_Container* container;
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typename _Container::iterator iter;
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public:
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typedef _Container container_type;
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typedef output_iterator_tag iterator_category;
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typedef void value_type;
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typedef void difference_type;
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typedef void pointer;
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typedef void reference;
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insert_iterator(_Container& __x) : container(&__x) {}
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insert_iterator(_Container& __x, typename _Container::iterator)
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: container(&__x) {}
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insert_iterator<_Container>&
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operator=(const typename _Container::value_type& __value) {
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container->insert(__value);
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return *this;
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}
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insert_iterator<_Container>& operator*() { return *this; }
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insert_iterator<_Container>& operator++() { return *this; }
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insert_iterator<_Container>& operator++(int) { return *this; }
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};
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} // namespace std
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#endif /* __SGI_STL_INTERNAL_HASH_SET_H */
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// Local Variables:
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// mode:C++
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// End:
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