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RCF - Interprocess Communication for C++

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25 Oct 2011CPOL20 min read 4.6M   8.4K   331  
A server/client IPC framework, using the C++ preprocessor as an IDL compiler.
 
//******************************************************************************
// RCF - Remote Call Framework
// Copyright (c) 2005 - 2007. All rights reserved.
// Consult your license for conditions of use.
// Developed by Jarl Lindrud.
// Contact: jlindrud@hotmail.com .
//******************************************************************************

#ifndef INCLUDE_RCF_PROTOCOL_PROTOCOL_HPP
#define INCLUDE_RCF_PROTOCOL_PROTOCOL_HPP

#include <iosfwd>

#include <boost/function.hpp>

#include <RCF/Tools.hpp>

namespace RCF {

    static const int SfBinary       = 1;
    static const int SfText         = 2;
    static const int BsBinary       = 3;
    static const int BsText         = 4;

    extern const int DefaultSerializationProtocol;

    template<typename N>
    class Protocol
    {
    public:

        static std::string getName()
        {
            return "";
        }

        class In
        {
        public:
            void bind(std::istream &is)
            {
                RCF_UNUSED_VARIABLE(is);
            }

            void unbind()
            {}
           
            template<typename T>
            In &operator>>(T &t)
            {
                RCF_UNUSED_VARIABLE(t);
                RCF_THROW(RCF::SerializationException(RcfError_UnknownSerializationProtocol))(N::value);
                return *this;
            }
        };

        class Out
        {
        public:
            void bind(std::ostream &os)
            {
                RCF_UNUSED_VARIABLE(os);
            }

            void unbind()
            {}

            template<typename T>
            Out &operator<<(const T &t)
            {
                RCF_UNUSED_VARIABLE(t);
                RCF_THROW(RCF::SerializationException(RcfError_UnknownSerializationProtocol))(N::value);
                return *this;
            }
        };
    };


    template<typename IS, typename OS>
    class ProtocolImpl1
    {
    public:
        class In
        {
        public:
            void bind(std::istream &is)                           
            {
                mAr.clearState();
                mAr.setIs(is);
                invokeCustomizationCallback();
            }

            void unbind()
            {}
           
            template<typename T> In &operator>>(T &t)
            {
                mAr >> t;
                return *this;
            }

            typedef boost::function1<void, IS &> CustomizationCallback;

            void setCustomizationCallback(CustomizationCallback customizationCallback)
            {
                mCustomizationCallback = customizationCallback;
                invokeCustomizationCallback();
            }           
       
        private:
            IS mAr;

            CustomizationCallback mCustomizationCallback;

            void invokeCustomizationCallback()
            {
                if (mCustomizationCallback)
                {
                    mCustomizationCallback(mAr);
                }
            }

        };

        class Out
        {
        public:
            void bind(std::ostream &os)                           
            {
                mAr.clearState();
                mAr.setOs(os);

                invokeCustomizationCallback();
            }

            void unbind()
            {}
           
            template<typename T> Out &operator<<(const T &t)
            {
                mAr << t;
                return *this;
            }

            typedef boost::function1<void, OS &> CustomizationCallback;

            void setCustomizationCallback(CustomizationCallback customizationCallback)
            {
                mCustomizationCallback = customizationCallback;
                invokeCustomizationCallback();
            }

        private:
            OS mAr;

            CustomizationCallback mCustomizationCallback;

            void invokeCustomizationCallback()
            {
                if (mCustomizationCallback)
                {
                    mCustomizationCallback(mAr);
                }
            }

        };
    };
   
    template<typename IS, typename OS>
    class ProtocolImpl2
    {
    public:
        class In
        {
        public:
            void bind(std::istream &is)                           
            {
                mAr.reset( new IS(is) );
                invokeCustomizationCallback();
            }

            void unbind()
            {
                mAr.reset();
            }

            template<typename T> In &operator>>(T &t)
            {
                *mAr >> t;
                return *this;
            }

            typedef boost::function1<void, IS &> CustomizationCallback;

            void setCustomizationCallback(CustomizationCallback customizationCallback)
            {
                mCustomizationCallback = customizationCallback;
                invokeCustomizationCallback();
            }           

        private:
            std::auto_ptr<IS> mAr;

            CustomizationCallback mCustomizationCallback;

            void invokeCustomizationCallback()
            {
                if (mCustomizationCallback)
                {
                    mCustomizationCallback(*mAr);
                }
            }

        };

        class Out
        {
        public:
            void bind(std::ostream &os)                           
            {
                mAr.reset( new OS(os) );
                invokeCustomizationCallback();
            }

            void unbind()
            {
                mAr.reset();
            }

            template<typename T> Out &operator<<(const T &t)
            {
                *mAr << t;
                return *this;
            }

            typedef boost::function1<void, OS &> CustomizationCallback;

            void setCustomizationCallback(CustomizationCallback customizationCallback)
            {
                mCustomizationCallback = customizationCallback;
                invokeCustomizationCallback();
            }

        private:
            std::auto_ptr<OS> mAr;

            CustomizationCallback mCustomizationCallback;

            void invokeCustomizationCallback()
            {
                if (mCustomizationCallback)
                {
                    mCustomizationCallback(*mAr);
                }
            }

        };
    };

} // namespace RCF

#endif //! INCLUDE_RCF_PROTOCOL_PROTOCOL_HPP

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Jarl Lindrud
Australia Australia
Software developer, from Sweden and now living in Canberra, Australia, working on distributed C++ applications. When he is not programming, Jarl enjoys skiing and playing table tennis. He derives immense satisfaction from referring to himself in third person.

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Posted 23 Dec 2005

Article Copyright 2005 by Jarl Lindrud
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