MSBitSetLogic.h

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//  »missingDescription«
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// SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
// Copyright 2001-2010 DLR (http://www.dlr.de/) and contributors
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//
//   This program is free software; you can redistribute it and/or modify
//   it under the terms of the GNU General Public License as published by
//   the Free Software Foundation; either version 2 of the License, or
//   (at your option) any later version.
//
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#ifndef MSBitSetLogic_h
#define MSBitSetLogic_h


// ===========================================================================
// included modules
// ===========================================================================
#ifdef _MSC_VER
#include <windows_config.h>
#else
#include <config.h>
#endif

#include <bitset>
#include <vector>
#include <cassert>
#include "MSJunctionLogic.h"
#include "MSLogicJunction.h"


// ===========================================================================
// class definitions
// ===========================================================================
template< size_t N >
class MSBitSetLogic : public MSJunctionLogic {
public:
    typedef std::vector< std::bitset< N > > Logic;

    typedef std::vector< std::bitset< N > > Foes;


public:
    MSBitSetLogic(unsigned int nLinks,
                  unsigned int nInLanes,
                  Logic* logic,
                  Foes *foes,
                  std::bitset<64> conts)
            : MSJunctionLogic(nLinks, nInLanes), myLogic(logic),
            myInternalLinksFoes(foes), myConts(conts) {}


    ~MSBitSetLogic() {
        delete myLogic;
        delete myInternalLinksFoes;
    }


    void respond(const MSLogicJunction::Request& request,
                 const MSLogicJunction::InnerState& innerState,
                 MSLogicJunction::Respond& respond) const {
        size_t i;
        // calculate respond
        for (i = 0; i < myNLinks; ++i) {
            if (myConts.test(i)) {
                respond.set(i, request.test(i));
            } else {
                bool linkPermit = request.test(i)
                                  &&
                                  ((request&(*myLogic)[i]).none() || myConts.test(i));
#ifdef HAVE_INTERNAL_LANES
                linkPermit &= (innerState&(*myInternalLinksFoes)[i]).none();
#endif
                respond.set(i, linkPermit);
            }
        }
    }


    const MSLogicJunction::LinkFoes &getFoesFor(unsigned int linkIndex) const throw() {
        return (*myLogic)[linkIndex];
    }

    const std::bitset<64> &getInternalFoesFor(unsigned int linkIndex) const throw() {
        return (*myInternalLinksFoes)[linkIndex];
    }

    bool getIsCont(unsigned int linkIndex) const throw() {
        return myConts.test(linkIndex);
    }

    virtual bool isCrossing() const throw() {
        for (typename Logic::const_iterator i=myLogic->begin(); i!=myLogic->end(); ++i) {
            if ((*i).any()) {
                return true;
            }
        }
        return false;
    }

private:
    Logic* myLogic;

    Foes *myInternalLinksFoes;

    std::bitset<64> myConts;

private:
    MSBitSetLogic(const MSBitSetLogic&);

    MSBitSetLogic& operator=(const MSBitSetLogic&);

};


typedef MSBitSetLogic< 64 > MSBitsetLogic;


#endif

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