// $Id$
//
// Copyright (C) 2006 Stefan Bund <g0dil@berlios.de>
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
// This program 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, write to the
// Free Software Foundation, Inc.,
// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
// Copyright (C) 2006

/** \file
    \brief ReadHelper internal header */

#ifndef IH_SENF_Scheduler_ReadHelper_
#define IH_SENF_Scheduler_ReadHelper_ 1

// Custom includes

//-/////////////////////////////////////////////////////////////////////////////////////////////////

namespace senf {


    /** \brief Abstract predicate interface
        \internal
     */
    template <class Handle>
    struct ReadHelper<Handle>::InternalPredicate
    {
        virtual ~InternalPredicate() {}

        /** \brief template to runtime polymorphic barrier for the predicate interface
            \internal

            \implementation This class will provide a polymorphic
                wrapper around the non-polymorphic ReadHelper
                predicate. This is used, so the predicate can be
                specified as an arbitrary callable object (even a
                boost::function or a Boost.Lambda expression) without
                imposing any inheritance relationship on the predicate
         */
        template <class Predicate>
        struct Dispatcher
            : public ReadHelper<Handle>::InternalPredicate
        {
            Dispatcher(Predicate p) : predicate(p) {}
            virtual std::string::size_type operator()(std::string const & data);
            Predicate predicate;
        };

        virtual std::string::size_type operator()(std::string const & data) = 0;
    };

}


//-/////////////////////////////////////////////////////////////////////////////////////////////////
#endif


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// ispell-local-dictionary: "american"
// compile-command: "scons -u test"
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