Make_Update_Receiver.hxx

// 
// Copyright (C) 2006 James M. Lawrence.  All rights reserved.
// 
// software: esve-1.0.3
// file: esve/components/dimn/Make_Update_Receiver.hxx
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. The origin of this software must not be misrepresented; you must
//    not claim that you wrote the original software.  If you use this
//    software in a product, an acknowledgment in the product 
//    documentation would be appreciated but is not required.
// 
// 3. Altered source versions must be plainly marked as such, and must
//    not be misrepresented as being the original software.
// 
// 4. The name of the author may not be used to endorse or promote
//    products derived from this software without specific prior written
//    permission.
// 
// THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY,
// AND WITH NO CLAIM AS TO ITS SUITABILITY FOR ANY PURPOSE.  IN NO EVENT
// SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM WHATSOEVER MADE IN CONNECTION
// TO THIS SOFTWARE.
// 

#ifndef esve_components_dimn_Make_Update_Receiver_hxx
#define esve_components_dimn_Make_Update_Receiver_hxx

#include <esve/message/impl/Update_Receiver.hxx>

namespace esve { namespace components { namespace dimn {


template< typename T_Target >
class Make_Update_Receiver
    : virtual public message::impl::Update_Receiver,
      public T_Target
{
private:
#if !defined(NDEBUG)
    template< class U > static void m_unused( const U & ) { }

    void m_requirements_1()
    {
        T_Target::update() ;
        T_Target::update(double(1.0)) ;
    }

    struct m_Requirements
    {
        m_Requirements()
        {
            typedef void (Make_Update_Receiver::*R)() ;
            R r = &Make_Update_Receiver::m_requirements_1 ;
            m_unused(r) ;
        }
    } m_requirements ;
#endif // !defined(NDEBUG)
    
    Make_Update_Receiver( const Make_Update_Receiver & ) ;
    Make_Update_Receiver & operator=( const Make_Update_Receiver & ) ;
    
public:
    Make_Update_Receiver() ;

    template< typename T_Arg >
    Make_Update_Receiver( T_Arg & arg ) ;

    template< typename T_Arg >
    Make_Update_Receiver( const T_Arg & arg ) ;

    ~Make_Update_Receiver() ;

protected:
    void update() ;
    void update( double dt ) ;
} ;

}}} // namespace esve::components::dimn

#include <esve/components/dimn/Make_Update_Receiver.template.cxx>

#endif

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