SendHandle.hpp

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/***************************************************************************
  tag: The SourceWorks  Tue Sep 7 00:55:18 CEST 2010  SendHandle.hpp

                        SendHandle.hpp -  description
                           -------------------
    begin                : Tue September 07 2010
    copyright            : (C) 2010 The SourceWorks
    email                : peter@thesourceworks.com

 ***************************************************************************
 *   This library is free software; you can redistribute it and/or         *
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#ifndef ORO_CORELIB_SEND_HANDLE_HPP
#define ORO_CORELIB_SEND_HANDLE_HPP

#include "rtt-config.h"
#include "Logger.hpp"
#include "internal/CollectSignature.hpp"
#include "internal/CollectBase.hpp"
#include "internal/ReturnSignature.hpp"
#include "internal/ReturnBase.hpp"
#include <boost/type_traits.hpp>

namespace RTT
{
    template<class Signature>
    class SendHandle
        : public internal::CollectSignature<boost::function_traits<typename internal::CollectType<Signature>::Ft>::arity,
                                            typename internal::CollectType<Signature>::Ft,
                                            internal::CollectBase<Signature>* >,
          public internal::ReturnSignature<boost::function_traits<Signature>::arity,
                                          Signature,
                                          typename internal::CollectBase<Signature>::shared_ptr >
    {
    public:
        typedef internal::CollectSignature<boost::function_traits<typename internal::CollectType<Signature>::Ft>::arity,
                                           typename internal::CollectType<Signature>::Ft,
                                           internal::CollectBase<Signature>* >      CBase;
        typedef internal::ReturnSignature<boost::function_traits<Signature>::arity,
                                           Signature,
                                           typename internal::CollectBase<Signature>::shared_ptr >      RBase;
        SendHandle() {}

        SendHandle(typename internal::CollectBase<Signature>::shared_ptr coll) : CBase( coll.get() ), RBase(coll) {}

        SendHandle(const SendHandle& hs) : CBase(hs.cimpl), RBase(hs.impl) {}

        ~SendHandle() {
            //impl->dispose();
        }

        SendHandle& operator=(base::DisposableInterface* implementation)
        {
            if (this->RBase::impl && this->RBase::impl == implementation)
                return *this;
            this->RBase::impl.reset( boost::dynamic_pointer_cast< internal::ReturnBase<Signature> >(implementation) );
            if ( !this->RBase::impl && implementation ) {
                log(Error) << "Tried to assign SendHandle from incompatible type."<< endlog();
            }
            this->CBase::cimpl = dynamic_cast< internal::CollectBase<Signature>* >(implementation);
            if ( !this->CBase::cimpl && implementation ) {
                log(Error) << "Tried to assign SendHandle from incompatible type."<< endlog();
            }
            return *this;
        }

        operator bool() const { return ready();}

        bool ready() const { return this->CBase::cimpl && this->RBase::impl ;}

        using CBase::collect;

        SendStatus collect() const
        {
            if (this->impl)
                return this->impl->collect();
            return SendFailure;
        }
    protected:
    };
}
#endif