multi_type_map.hpp

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/*
  CLAW - a C++ Library Absolutely Wonderful

  CLAW is a free library without any particular aim but being useful to 
  anyone.

  Copyright (C) 2005-2011 Julien Jorge

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

  contact: julien.jorge@gamned.org
*/
#ifndef __CLAW_MULTI_TYPE_MAP_HPP__
#define __CLAW_MULTI_TYPE_MAP_HPP__

#include <claw/meta/no_type.hpp>
#include <claw/meta/type_list.hpp>
#include <map>

namespace claw
{
  template<typename ValueType, typename Map>
  class multi_type_map_wrapper;

  template<typename Map>
  class multi_type_map_helper;

  template<typename Key, typename TypeList>
  class multi_type_map;

  template<typename Key>
  class multi_type_map<Key, meta::no_type>
  {

  }; // class multi_type_map

  template<typename Key, typename Head, typename Tail>
  class multi_type_map< Key, meta::type_list<Head, Tail> >:
    public multi_type_map<Key, Tail>
  {
  public:
    typedef Key key_type;
    typedef Head value_type;
    typedef meta::type_list<Head, Tail> value_type_list;
    typedef multi_type_map< Key, meta::type_list<Head, Tail> > self_type;
    typedef std::map<key_type, value_type> container_type;
    typedef multi_type_map<Key, Tail> super;

    friend struct multi_type_map_wrapper<value_type, self_type>;
    friend struct multi_type_map_helper<self_type>;

    template<typename ValueType>
    struct iterator
    {
      typedef typename std::map<key_type, ValueType>::iterator type;

      typedef
      typename std::map<key_type, ValueType>::const_iterator const_type;
    }; // struct iterator

  private:
    typedef typename iterator<value_type>::type iterator_type;
    typedef typename iterator<value_type>::const_type const_iterator_type;

  public:
    template<typename ValueType>
    void erase( typename iterator<ValueType>::type it );

    template<typename ValueType>
    std::size_t erase( const key_type& k );

    template<typename ValueType>
    const ValueType& get( const key_type& k ) const;

    template<typename ValueType>
    ValueType& get( const key_type& k );

    template<typename ValueType>
    void set( const key_type& k, const ValueType& v );

    void set( const self_type& m );

    template<typename ValueType>
    bool exists( const key_type& k ) const;

    std::size_t size() const;

    template<typename ValueType>
    typename iterator<ValueType>::type begin();

    template<typename ValueType>
    typename iterator<ValueType>::type end();

    template<typename ValueType>
    typename iterator<ValueType>::const_type begin() const;

    template<typename ValueType>
    typename iterator<ValueType>::const_type end() const;

  private:
    container_type m_data;

  }; // class multi_type_map

} // namespace claw

#include <claw/impl/multi_type_map.tpp>

#endif // __CLAW_MULTI_TYPE_MAP_HPP__