ChannelPromoteByTypenameRegistration.h

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/*
 * Copyright (C) 2018 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
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 *
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 *   General Public License version 3.0 as published by the Free Software
 *   Foundation and appearing in the file LICENSE.GPL3 included in the
 *   packaging of this file. Please review the following information to
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#ifndef _MIRA_CHANNEL_PROMOTE_BY_TYPENAME_REGISTRATION_H_
#define _MIRA_CHANNEL_PROMOTE_BY_TYPENAME_REGISTRATION_H_

#include <utils/UniqueIdentifier.h>

#include <fw/Framework.h>
#include <fw/ChannelPromoteByTypename.h>

namespace mira {



#define COMMA ,

template <typename PromoteTo, typename ExtraDiscriminator>
class TypedChannelPromoter : public TypedChannelPromoterBase
{
    MIRA_META_OBJECT(TypedChannelPromoter<PromoteTo COMMA ExtraDiscriminator>,
                     ("PromoteTo", typeName() ) )
public:
    void promote(ConcreteChannel<void>* channel) const
    {
        channel_cast<PromoteTo>(channel);
    }

    static std::string typeName()
    {
        return mira::typeName<PromoteTo>();
    };
};

#undef COMMA

#ifdef MIRA_DISABLE_CHANNELPROMOTERS
    // #define macro empty to entirely disable registration
    #define MIRA_REGISTER_CHANNELTYPE(channeltype)
#else
    #ifndef MIRA_UNIQUE_IDENTIFIER_ENABLED
        #pragma message("UniqueIdentifier not enabled. "                      \
                        "MIRA_REGISTER_CHANNELTYPE disabled.")
        #define MIRA_REGISTER_CHANNELTYPE(channeltype)
    #else
        // semi-unique identifier __project_path_to_file_line__
        #define MIRA_REGISTER_CHANNELTYPE_UNIQUE_NAME                         \
            MIRA_FILE_LINE_IDENTIFIER

        // Define a unique class and use it as extra template parameter
        // for the promoter specialization to register.
        // Using the source file name and line as part of the resulting type name
        // gives the bonus advantage that its origin can easily be found in the code.
        #define MIRA_REGISTER_CHANNELTYPE(channeltype)                        \
        class MIRA_REGISTER_CHANNELTYPE_UNIQUE_NAME{};                        \
        MIRA_VARTEMPLATE_CLASS_REGISTER(                                      \
            (mira), TypedChannelPromoter, 2,                                  \
            (channeltype, MIRA_REGISTER_CHANNELTYPE_UNIQUE_NAME),             \
            mira::TypedChannelPromoterBase)
    #endif
#endif



}

#endif