ExtendedEvent.h

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/*******************************************************************************
 *
 * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de>
 *                    2010 Marcus Foerster <MarcusFoerster1@gmx.de>
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#ifndef _Extended_Event_
#define _Extended_Event_

#include <stdint.h>

#include "boost/mpl/aux_/na.hpp"

#include "object/PlacementNew.h"

#include "mw/common/Subject.h"
#include "mw/common/Event.h"

#include "mw/attributes/detail/AttributeSetProvider.h"
#include "mw/attributes/AttributeSet.h"
#include "mw/attributes/access/Attribute_RT.h"

namespace famouso {
    namespace mw {

        template <famouso::mw::Event::Type payLoadSize = 0,
                  typename A1orSeq = boost::mpl::na, typename A2 = boost::mpl::na,
                  typename A3 = boost::mpl::na, typename A4 = boost::mpl::na,
                  typename A5 = boost::mpl::na, typename A6 = boost::mpl::na,
                  typename A7 = boost::mpl::na, typename A8 = boost::mpl::na,
                  typename A9 = boost::mpl::na, typename A10 = boost::mpl::na>
        class ExtendedEvent: public Event {
            private:
                typedef typename famouso::mw::attributes::detail::SetProvider<
                                                                   A1orSeq, A2, A3, A4,
                                                                   A5, A6, A7, A8, A9, A10
                                                                  >::attrSet attrSet;

            public:
                typedef ExtendedEvent type;

            private:
                static const famouso::mw::Event::Type attribsLen = attrSet::overallSize;

                // the whole event with attributes and payload
                uint8_t _edata[attribsLen + payLoadSize];

            public:
                ExtendedEvent(const famouso::mw::Subject& sub) :
                    Event(sub) {
                    // Construct the attributes
                    new (&_edata[0]) attrSet;

                    // Set the base class' members
                    length = attribsLen + payLoadSize;
                    data   = _edata;
                }

                // payload setting as simple as possible
                void operator =(const char* str) {
                    Type i = 0;

                    while (str[i] && (i < payLoadSize)) {
                        _edata[attribsLen + i] = str[i];
                        ++i;
                    }
                }

                template <typename Attr>
                Attr* find() {
                    return ((reinterpret_cast<attrSet*>(_edata))->template find_rt<Attr>());
                }

                template <typename Attr>
                const Attr* find() const {
                    return ((reinterpret_cast<attrSet*>(_edata))->template find_rt<Attr>());
                }
        };

    } // end namespace mw
} // end namespace famouso

#endif // _Extended_Event_