VariantParser.hh

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//
// Copyright (c) 2020 Fraunhofer Institute for Applied Information Technology (FIT)
//                    Network Research Group (NET)
//                    Schloss Birlinghoven, 53754 Sankt Augustin, GERMANY
//                    Contact: support@wiback.org
//
// This file is part of the SENF code tree.
// It is licensed under the 3-clause BSD License (aka New BSD License).
// See LICENSE.txt in the top level directory for details or visit
// https://opensource.org/licenses/BSD-3-Clause
//


#ifndef HH_SENF_Packets_VariantParser_
#define HH_SENF_Packets_VariantParser_ 1

#ifndef HH_SENF_Packets_Packets_
#error "Don't include 'VariantParser.hh' directly, include 'Packets.hh'"
#endif

// Custom includes
#include <boost/mpl/vector.hpp>
#include <boost/mpl/at.hpp>
#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/seq/for_each.hpp>
#include "PacketParser.hh"

//#include "VariantParser.mpp"
//-/////////////////////////////////////////////////////////////////////////////////////////////////

namespace senf {

#   ifndef SENF_LIMIT_PARSE_VARIANT

#       define SENF_LIMIT_PARSE_VARIANT 6
#   endif

    template <class AuxPolicy, class Parsers>
    class VariantParser
        : public PacketParserBase, private AuxPolicy
    {
        typedef Parsers parsers;

    public:
        //\{

        VariantParser(data_iterator i, state_type s);
        VariantParser(AuxPolicy policy, data_iterator i, state_type s);

        size_type bytes() const;
        void init();

        static const size_type init_bytes = senf::init_bytes<
            typename boost::mpl::at<parsers, boost::mpl::int_<0> >::type>::value
                + AuxPolicy::aux_bytes;

        //\}
        //-////////////////////////////////////////////////////////////////////////

        unsigned variant() const;       

        template <unsigned N>
        typename boost::mpl::at< parsers, boost::mpl::int_<N> >::type get() const;

        template <unsigned N>
        void init();                    

    };

#   define SENF_PARSER_VARIANT(name, chooser, types) \
        SENF_PARSER_VARIANT_I(public, name, chooser, types)

#   define SENF_PARSER_PRIVATE_VARIANT(name, chooser, types) \
        SENF_PARSER_VARIANT_I(protected, name, chooser, types)
}

//-/////////////////////////////////////////////////////////////////////////////////////////////////
#endif
#if !defined(HH_SENF_Packets_Packets__decls_) && !defined(HH_SENF_Packets_VariantParser_i_)
#define HH_SENF_Packets_VariantParser_i_
//#include "VariantParser.cci"
#include "VariantParser.ct"
#include "VariantParser.cti"
#endif


// Local Variables:
// mode: c++
// fill-column: 100
// comment-column: 40
// c-file-style: "senf"
// indent-tabs-mode: nil
// ispell-local-dictionary: "american"
// compile-command: "scons -u test"
// End: