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@stuff-o-matic.com
*/
#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
 
}
 
#include <claw/multi_type_map.tpp>
 
#endif // __CLAW_MULTI_TYPE_MAP_HPP__