/*
    auto_map.h - map that manages its contents
    Copyright (C) 2003-2004  Matthew Mueller <donut AT dakotacom.net>

    This program 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 of the License, or
    (at your option) any later version.

    This program 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 program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef AUTO_MAP_H__
#define AUTO_MAP_H__

#include "rcount.h"
#include <assert.h>
#include <map>

template <class K, class T, template <class BK, class BT> class Base>
class auto_map_base : public Base<K, restricted_ptr<T> > {
	protected:
		typedef Base<K, restricted_ptr<T> > super;
	public:
		typedef typename super::iterator iterator;

		void clear(void){
			while (!this->empty())
				erase(this->begin());
		}
		void erase(iterator i){
			T* p=(*i).second.gimmethepointer();
			super::erase(i);
			delete p;
		}
		auto_map_base(void){}
		~auto_map_base() {
			clear();
		}
	private:
		void insert(void); //private insert func to hide std::map's insert members
		void delete_all(void) {
			for (iterator i=this->begin(); i!=this->end(); ++i)
				delete (*i).gimmethepointer();
		}
		auto_map_base(const auto_map_base &v); //private copy constructor to disallow copying
		auto_map_base& operator= (const auto_map_base &m); //private operator= to disallow assignment
};


template <class K, class T>
class auto_map : public auto_map_base<K, T, std::map> {
	public:
		typedef typename auto_map_base<K, T, std::map>::super super;
		typedef typename super::iterator iterator;
		typedef typename super::value_type value_type;
		/*super::value_type value_type(const K &k, T*p) {
			return super::value_type(k, restricted_ptr<T>(p));
		}
		pair<iterator, bool> insert(const super::value_type &v) {
			assert(find(v.first)==end());
			return super::insert(v);
		}*/
		std::pair<iterator, bool> insert_value(const K &k, T* p) { //we can't really use the normal insert funcs, but we don't want to just name it insert since it would be easy to confuse with all the normal map insert funcs
			assert(find(k)==this->end());
			return super::insert(value_type(k, restricted_ptr<T>(p)));
		}
};

template <class K, class T>
class auto_multimap : public auto_map_base<K, T, std::multimap> {
	public:
		typedef typename auto_map_base<K, T, std::multimap>::super super;
		typedef typename super::iterator iterator;
		typedef typename super::value_type value_type;
		iterator insert_value(const K &k, T* p) { //we can't really use the normal insert funcs, but we don't want to just name it insert since it would be easy to confuse with all the normal map insert funcs
			return super::insert(value_type(k, restricted_ptr<T>(p)));
		}
};

#endif