src/rulebuilder.cpp

/*                                                                            *\
**                          Copyright (C) 2009-2010                           **
**       Dominik Charousset < Dominik.Charousset (at) haw-hamburg.de >        **
**                                                                            **
**            MMM       MMMMMM   MMMMMMMMM MMMMMMM   MMM       MMM            **
**           MMMMM     MMMMMMMM  MMMMMMMMM MMMMMMMM  MMM      MMMMM           **
**          MMM MMM   MMM        MMMM      MMM   MMM MMM     MMM MMM          **
**         MMM   MMM  MMM        MMMMMMMMM MMM   MMM MMM    MMM   MMM         **
**        MMMMMMMMMMM MMMM   MMM MMMM      MMM   MMM MMM   MMMMMMMMMMM        **
**       MMM       MMM MMMMMMMM  MMMMMMMMM MMMMMMMM  MMM  MMM       MMM       **
**      MMM         MMM MMMMMM   MMMMMMMMM MMMMMMM   MMM MMM         MMM      **
**                                                                            **
**                                                                            **
** This file is part of the acedia library.                                   **
**                                                                            **
** This library is free software: you can redistribute it and/or modify       **
** it under the terms of the GNU Lesser General Public License as published   **
** by the Free Software Foundation, either version 3 of the License, or       **
** (at your option) any later version.                                        **
**                                                                            **
** This library is distributed in the hope that it will be useful,            **
** but WITHOUT ANY WARRANTY; without even the implied warranty of             **
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the               **
** GNU Lesser General Public License for more details.                        **
**                                                                            **
** You should have received a copy of the GNU Lesser General Public License   **
** along with acedia. If not, see <http://www.gnu.org/licenses/>.             **
\*                                                                            */

#define ACEDIA_REDUCED_ANNOUNCE

#include "rulebuilder.hpp"

namespace acedia
{
    namespace details
    {
        
        IGuardFunctor::~IGuardFunctor() { }

        AnyArrayProcessor::AnyArrayProcessor() : next(NULL) { }

        AnyArrayProcessor::~AnyArrayProcessor() { if(next) delete next; }

        void AnyArrayProcessor::passThrough(AnyArrayProcessor *nextProcessor)
        {
            if (next)
            {
                next->passThrough(nextProcessor);
            }
            else
            {
                next = nextProcessor;
            }
        }

        void AnyArrayProcessor::setNext(AnyArrayProcessor *nextProcessor)
        {
            if (next) delete next;
            next = nextProcessor;
        }

    } // namespace details

    RuleBuilderBase::RuleBuilderBase(details::AnyArrayProcessor *processor)
     : proc(processor) { }

    details::AnyArrayProcessor* RuleBuilderBase::operator>>(void (*voidFunction)())
    {
        return passThroughAndClear(new details::InvokeFunctor<0,0>(boost::function0<void>(voidFunction)));
    }

    details::AnyArrayProcessor *RuleBuilderBase::passThroughAndClear(details::AnyArrayProcessor *nProc)
    {
        if (proc)
        {
            details::AnyArrayProcessor *res = proc;
            proc = NULL;
            res->passThrough(nProc);
            return res;
        }
        // else
        delete nProc;
        return NULL;
    }

} // namespace acedia

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