/home/raskolnikov/dev/psynth/trunk/src/psynth/base/type_traits.hpp

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/*
 *  Copyright (C) 2009 Juan Pedro Bolívar Puente
 *
 *  This file is part of Psychosynth.
 *   
 *  Psychosynth 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  Psychosynth 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef PSYNTH_TYPE_TRAITS_H_
#define PSYNTH_TYPE_TRAITS_H_

#include <memory>
#include <type_traits>
#include <boost/pointee.hpp>

namespace psynth
{
namespace base
{

template <typename Ptr>
struct pointee : public boost::pointee<Ptr> {};
template <typename T>
struct pointee<typename std::unique_ptr<T>> { typedef T type; };
template <typename T>
struct pointee<typename std::shared_ptr<T>> { typedef T type; };

template <typename Ptr>
struct pointer {};

template <typename Ptr>
struct pointer <Ptr*>
{
    template <typename T>
    struct apply { typedef T* type; };
};

template <typename Ptr>
struct pointer <std::unique_ptr<Ptr> >
{
    template <typename T>
    struct apply { typedef std::unique_ptr<T> type; };
};

template <typename Ptr>
struct pointer <std::shared_ptr<Ptr> >
{
    template <typename T>
    struct apply { typedef std::shared_ptr<T> type; };
};

template <typename Ptr>
struct pointer <std::auto_ptr<Ptr> >
{
    template <typename T>
    struct apply { typedef std::auto_ptr<T> type; };
};

#if 0

template <typename Ptr>
struct pointer <boost::unique_ptr<Ptr> >
{
    template <typename T>
    struct apply { typedef boost::unique_ptr<T> type; };
};

template <typename Ptr>
struct pointer <boost::shared_ptr<Ptr> >
{
    template <typename T>
    struct apply { typedef boost::shared_ptr<T> type; };
};

#endif

} /* namespace base */
} /* namespace psynth */

#endif /* PSYNTH_TYPE_TRAITS_H_ */