call_traits.h

Go to the documentation of this file.

/** @file
 *  @author Bram de Greve (bramz@users.sourceforge.net)
 *  @author Tom De Muer (tomdemuer@users.sourceforge.net)
 *
 *  *** BEGIN LICENSE INFORMATION ***
 *  
 *  The contents of this file are subject to the Common Public Attribution License 
 *  Version 1.0 (the "License"); you may not use this file except in compliance with 
 *  the License. You may obtain a copy of the License at 
 *  http://lass.sourceforge.net/cpal-license. The License is based on the 
 *  Mozilla Public License Version 1.1 but Sections 14 and 15 have been added to cover 
 *  use of software over a computer network and provide for limited attribution for 
 *  the Original Developer. In addition, Exhibit A has been modified to be consistent 
 *  with Exhibit B.
 *  
 *  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT 
 *  WARRANTY OF ANY KIND, either express or implied. See the License for the specific 
 *  language governing rights and limitations under the License.
 *  
 *  The Original Code is LASS - Library of Assembled Shared Sources.
 *  
 *  The Initial Developer of the Original Code is Bram de Greve and Tom De Muer.
 *  The Original Developer is the Initial Developer.
 *  
 *  All portions of the code written by the Initial Developer are:
 *  Copyright (C) 2004-2007 the Initial Developer.
 *  All Rights Reserved.
 *  
 *  Contributor(s):
 *
 *  Alternatively, the contents of this file may be used under the terms of the 
 *  GNU General Public License Version 2 or later (the GPL), in which case the 
 *  provisions of GPL are applicable instead of those above.  If you wish to allow use
 *  of your version of this file only under the terms of the GPL and not to allow 
 *  others to use your version of this file under the CPAL, indicate your decision by 
 *  deleting the provisions above and replace them with the notice and other 
 *  provisions required by the GPL License. If you do not delete the provisions above,
 *  a recipient may use your version of this file under either the CPAL or the GPL.
 *  
 *  *** END LICENSE INFORMATION ***
 */

#ifndef LASS_GUARDIAN_OF_INCLUSION_UTIL_CALL_TRAITS_H
#define LASS_GUARDIAN_OF_INCLUSION_UTIL_CALL_TRAITS_H

#include "util_common.h"

namespace lass
{
namespace util
{

template <typename T> 
struct CallTraits
{
    typedef T TValue;
    typedef T const & TParam;
    typedef T const & TConstReference;
    typedef T & TReference;
};

template <typename T> 
struct CallTraits<T const>
{
    typedef T const TValue;
    typedef T const & TParam;
    typedef T const & TConstReference;
    typedef T const & TReference;
};

template <typename T> 
struct CallTraits<T &>
{
    typedef T & TValue;
    typedef T & TParam;
    typedef T const & TConstReference;
    typedef T & TReference;
};

template <typename T> 
struct CallTraits<T const &>
{
    typedef T const & TValue;
    typedef T const & TParam;
    typedef T const & TConstReference;
    typedef T const & TReference;
};

template <typename T> 
struct CallTraits<T *>
{
    typedef T * TValue;
    typedef T * TParam;
    typedef T * const & TConstReference;
    typedef T * & TReference;
};

template <typename T> 
struct CallTraits<T const *>
{
    typedef T const * TValue;
    typedef T const * TParam;
    typedef T const * const & TConstReference;
    typedef T const * & TReference;
};

template <typename T, int N> 
struct CallTraits<T [N]>
{
    typedef T * TValue;
    typedef T * TParam;
    typedef T * const & TConstReference;
    typedef T * & TReference;
};

template <typename T, int N> 
struct CallTraits<T const [N]>
{
    typedef T const * TValue;
    typedef T const * TParam;
    typedef T const * const & TConstReference;
    typedef T const * & TReference;
};

#define LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(T)\
    template <> struct CallTraits<T>\
    {\
        typedef T TValue;\
        typedef T TParam;\
        typedef T const & TConstReference;\
        typedef T & TReference;\
    };\
    template <> struct CallTraits<T const>\
    {\
        typedef T const TValue;\
        typedef T const TParam;\
        typedef T const & TConstReference;\
        typedef T const & TReference;\
    };\
    /**/

LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(char)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(unsigned char)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(signed char)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(unsigned short)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(signed short)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(unsigned int)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(signed int)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(unsigned long)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(signed long)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(float)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(double)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(long double)
LASS_UTIL_CALL_TRAITS_FUNDAMENTAL(bool)

}
}

#endif

// EOF