275 lines
9.8 KiB
C++
275 lines
9.8 KiB
C++
// Set implementation -*- C++ -*-
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// Copyright (C) 2001 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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*
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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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* Copyright (c) 1996,1997
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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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/** @file stl_set.h
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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#ifndef __GLIBCPP_INTERNAL_SET_H
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#define __GLIBCPP_INTERNAL_SET_H
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#include <bits/concept_check.h>
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namespace std
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{
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// Forward declarations of operators < and ==, needed for friend declaration.
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template <class _Key, class _Compare = less<_Key>,
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class _Alloc = allocator<_Key> >
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class set;
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator==(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y);
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator<(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y);
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template <class _Key, class _Compare, class _Alloc>
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class set
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{
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// concept requirements
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__glibcpp_class_requires(_Key, _SGIAssignableConcept)
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__glibcpp_class_requires4(_Compare, bool, _Key, _Key, _BinaryFunctionConcept);
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public:
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// typedefs:
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typedef _Key key_type;
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typedef _Key value_type;
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typedef _Compare key_compare;
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typedef _Compare value_compare;
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private:
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typedef _Rb_tree<key_type, value_type,
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_Identity<value_type>, key_compare, _Alloc> _Rep_type;
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_Rep_type _M_t; // red-black tree representing set
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public:
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typedef typename _Rep_type::const_pointer pointer;
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typedef typename _Rep_type::const_pointer const_pointer;
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typedef typename _Rep_type::const_reference reference;
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typedef typename _Rep_type::const_reference const_reference;
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typedef typename _Rep_type::const_iterator iterator;
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typedef typename _Rep_type::const_iterator const_iterator;
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typedef typename _Rep_type::const_reverse_iterator reverse_iterator;
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typedef typename _Rep_type::const_reverse_iterator const_reverse_iterator;
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typedef typename _Rep_type::size_type size_type;
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typedef typename _Rep_type::difference_type difference_type;
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typedef typename _Rep_type::allocator_type allocator_type;
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// allocation/deallocation
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set() : _M_t(_Compare(), allocator_type()) {}
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explicit set(const _Compare& __comp,
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const allocator_type& __a = allocator_type())
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: _M_t(__comp, __a) {}
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template <class _InputIterator>
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set(_InputIterator __first, _InputIterator __last)
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: _M_t(_Compare(), allocator_type())
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{ _M_t.insert_unique(__first, __last); }
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template <class _InputIterator>
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set(_InputIterator __first, _InputIterator __last, const _Compare& __comp,
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const allocator_type& __a = allocator_type())
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: _M_t(__comp, __a) { _M_t.insert_unique(__first, __last); }
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set(const set<_Key,_Compare,_Alloc>& __x) : _M_t(__x._M_t) {}
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set<_Key,_Compare,_Alloc>& operator=(const set<_Key, _Compare, _Alloc>& __x)
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{
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_M_t = __x._M_t;
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return *this;
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}
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// accessors:
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key_compare key_comp() const { return _M_t.key_comp(); }
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value_compare value_comp() const { return _M_t.key_comp(); }
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allocator_type get_allocator() const { return _M_t.get_allocator(); }
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iterator begin() const { return _M_t.begin(); }
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iterator end() const { return _M_t.end(); }
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reverse_iterator rbegin() const { return _M_t.rbegin(); }
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reverse_iterator rend() const { return _M_t.rend(); }
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bool empty() const { return _M_t.empty(); }
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size_type size() const { return _M_t.size(); }
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size_type max_size() const { return _M_t.max_size(); }
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void swap(set<_Key,_Compare,_Alloc>& __x) { _M_t.swap(__x._M_t); }
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// insert/erase
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pair<iterator,bool> insert(const value_type& __x) {
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pair<typename _Rep_type::iterator, bool> __p = _M_t.insert_unique(__x);
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return pair<iterator, bool>(__p.first, __p.second);
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}
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iterator insert(iterator __position, const value_type& __x) {
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typedef typename _Rep_type::iterator _Rep_iterator;
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return _M_t.insert_unique((_Rep_iterator&)__position, __x);
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}
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template <class _InputIterator>
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void insert(_InputIterator __first, _InputIterator __last) {
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_M_t.insert_unique(__first, __last);
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}
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void erase(iterator __position) {
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typedef typename _Rep_type::iterator _Rep_iterator;
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_M_t.erase((_Rep_iterator&)__position);
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}
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size_type erase(const key_type& __x) {
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return _M_t.erase(__x);
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}
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void erase(iterator __first, iterator __last) {
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typedef typename _Rep_type::iterator _Rep_iterator;
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_M_t.erase((_Rep_iterator&)__first, (_Rep_iterator&)__last);
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}
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void clear() { _M_t.clear(); }
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// set operations:
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size_type count(const key_type& __x) const {
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return _M_t.find(__x) == _M_t.end() ? 0 : 1;
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}
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#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
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//214. set::find() missing const overload
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iterator find(const key_type& __x) { return _M_t.find(__x); }
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const_iterator find(const key_type& __x) const { return _M_t.find(__x); }
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iterator lower_bound(const key_type& __x) {
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return _M_t.lower_bound(__x);
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}
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const_iterator lower_bound(const key_type& __x) const {
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return _M_t.lower_bound(__x);
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}
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iterator upper_bound(const key_type& __x) {
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return _M_t.upper_bound(__x);
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}
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const_iterator upper_bound(const key_type& __x) const {
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return _M_t.upper_bound(__x);
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}
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pair<iterator,iterator> equal_range(const key_type& __x) {
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return _M_t.equal_range(__x);
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}
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pair<const_iterator,const_iterator> equal_range(const key_type& __x) const {
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return _M_t.equal_range(__x);
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}
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#else
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iterator find(const key_type& __x) const { return _M_t.find(__x); }
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iterator lower_bound(const key_type& __x) const {
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return _M_t.lower_bound(__x);
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}
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iterator upper_bound(const key_type& __x) const {
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return _M_t.upper_bound(__x);
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}
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pair<iterator,iterator> equal_range(const key_type& __x) const {
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return _M_t.equal_range(__x);
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}
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#endif
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template <class _K1, class _C1, class _A1>
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friend bool operator== (const set<_K1,_C1,_A1>&, const set<_K1,_C1,_A1>&);
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template <class _K1, class _C1, class _A1>
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friend bool operator< (const set<_K1,_C1,_A1>&, const set<_K1,_C1,_A1>&);
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};
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator==(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y) {
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return __x._M_t == __y._M_t;
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}
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator<(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y) {
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return __x._M_t < __y._M_t;
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}
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator!=(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y) {
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return !(__x == __y);
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}
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator>(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y) {
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return __y < __x;
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}
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator<=(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y) {
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return !(__y < __x);
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}
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template <class _Key, class _Compare, class _Alloc>
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inline bool operator>=(const set<_Key,_Compare,_Alloc>& __x,
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const set<_Key,_Compare,_Alloc>& __y) {
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return !(__x < __y);
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}
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template <class _Key, class _Compare, class _Alloc>
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inline void swap(set<_Key,_Compare,_Alloc>& __x,
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set<_Key,_Compare,_Alloc>& __y) {
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__x.swap(__y);
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}
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} // namespace std
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#endif /* __GLIBCPP_INTERNAL_SET_H */
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// Local Variables:
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// mode:C++
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// End:
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