TypeStreamSelector.hpp

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/***************************************************************************
  tag: Peter Soetens Fri Jun 10 15:16:01 2011 +0200 TypeStreamSelector.hpp

                        TypeStreamSelector.hpp -  description
                           -------------------
    begin                : Fri Jun 10 2011
    copyright            : (C) 2011 Peter Soetens
    email                : peter@thesourceworks.com

 ***************************************************************************
 *   This library is free software; you can redistribute it and/or         *
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 *   version 2 of the License.                                             *
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 *   instantiate templates or use macros or inline functions from this     *
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 ***************************************************************************/


#ifndef ORO_TYPESTREAMSELECTOR_HPP_
#define ORO_TYPESTREAMSELECTOR_HPP_

#include <ostream>
#include <istream>


namespace RTT
{
    namespace types {
        template<typename T, bool b_value>
        struct TypeStreamSelector;
        template<typename T>
        struct TypeStreamSelector<T,true>
        {
            static std::ostream& write(std::ostream& os, T const& t)
            {
#ifdef OS_HAVE_STREAMS
                os << t;
#endif
                return os;
            }
            static std::istream& read(std::istream& os, T& t)
            {
#ifdef OS_HAVE_STREAMS
                os >> t;
#endif
                return os;
            }
        };
        template<typename T>
        struct TypeStreamSelector<T,false>
        {
            static std::ostream& write(std::ostream& os, T)
            {
                return os;
            }
            static std::istream& read(std::istream& os, T& )
            {
                return os;
            }
        };
    }
}

#endif /* ORO_TYPESTREAMSELECTOR_HPP_ */