QxAnyCastDynamic.h

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/****************************************************************************
**
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** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
**
** This file is part of the QxOrm library
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** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Lionel Marty
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** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file 'license.gpl3.txt' included in the
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#ifndef _QX_ANY_CAST_DYNAMIC_H_
#define _QX_ANY_CAST_DYNAMIC_H_

#ifdef _MSC_VER
#pragma once
#endif

#include <QtCore/qsharedpointer.h>

#include <QxCommon/QxAny.h>

#include <QxDao/QxDaoPointer.h>

namespace qx {

template <typename T>
struct any_cast_dynamic
{ static T get(const qx::any & a) { return qx::any_cast<T>(a); } };

template <typename T>
struct any_cast_dynamic<T *>
{
   static T * get(const qx::any & a)
   {
      if (a.empty()) { return NULL; }
      qx::any * b = const_cast<qx::any *>(& a);
      T ** t = qx::unsafe_any_cast<T *>(b);
      if (! t) { return NULL; }
      return (* t);
   }
};

#ifdef _QX_ENABLE_BOOST

template <typename T>
struct any_cast_dynamic< boost::shared_ptr<T> >
{
   static boost::shared_ptr<T> get(const qx::any & a)
   {
      if (a.empty()) { return boost::shared_ptr<T>(); }
      qx::any * b = const_cast<qx::any *>(& a);
      boost::shared_ptr<T> * t = qx::unsafe_any_cast< boost::shared_ptr<T> >(b);
      if (! t) { return boost::shared_ptr<T>(); }
      return (* t);
   }
};

#endif // _QX_ENABLE_BOOST

template <typename T>
struct any_cast_dynamic< QSharedPointer<T> >
{
   static QSharedPointer<T> get(const qx::any & a)
   {
      if (a.empty()) { return QSharedPointer<T>(); }
      qx::any * b = const_cast<qx::any *>(& a);
      QSharedPointer<T> * t = qx::unsafe_any_cast< QSharedPointer<T> >(b);
      if (! t) { return QSharedPointer<T>(); }
      return (* t);
   }
};

template <typename T>
struct any_cast_dynamic< qx::dao::ptr<T> >
{
   static qx::dao::ptr<T> get(const qx::any & a)
   {
      if (a.empty()) { return qx::dao::ptr<T>(); }
      qx::any * b = const_cast<qx::any *>(& a);
      qx::dao::ptr<T> * t = qx::unsafe_any_cast< qx::dao::ptr<T> >(b);
      if (! t) { return qx::dao::ptr<T>(); }
      return (* t);
   }
};

template <typename T>
struct any_cast_dynamic< std::shared_ptr<T> >
{
   static std::shared_ptr<T> get(const qx::any & a)
   {
      if (a.empty()) { return std::shared_ptr<T>(); }
      qx::any * b = const_cast<qx::any *>(& a);
      std::shared_ptr<T> * t = qx::unsafe_any_cast< std::shared_ptr<T> >(b);
      if (! t) { return std::shared_ptr<T>(); }
      return (* t);
   }
};

} // namespace qx

#endif // _QX_ANY_CAST_DYNAMIC_H_