RORouteHandler.cpp

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/****************************************************************************/
// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.org/sumo
// Copyright (C) 2001-2017 German Aerospace Center (DLR) and others.
/****************************************************************************/
//
//   This program and the accompanying materials
//   are made available under the terms of the Eclipse Public License v2.0
//   which accompanies this distribution, and is available at
//   http://www.eclipse.org/legal/epl-v20.html
//
/****************************************************************************/
// Parser and container for routes during their loading
/****************************************************************************/


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

#include <string>
#include <map>
#include <vector>
#include <iostream>
#include <utils/iodevices/OutputDevice.h>
#include <utils/xml/SUMOSAXHandler.h>
#include <utils/xml/SUMOXMLDefinitions.h>
#include <utils/common/MsgHandler.h>
#include <utils/common/StringTokenizer.h>
#include <utils/common/UtilExceptions.h>
#include <utils/options/OptionsCont.h>
#include <utils/xml/SUMOVehicleParserHelper.h>
#include <utils/xml/SUMOSAXReader.h>
#include <utils/xml/XMLSubSys.h>
#include <utils/iodevices/OutputDevice_String.h>
#include "ROPerson.h"
#include "RONet.h"
#include "ROEdge.h"
#include "ROLane.h"
#include "RORouteDef.h"
#include "RORouteHandler.h"


// ===========================================================================
// method definitions
// ===========================================================================
RORouteHandler::RORouteHandler(RONet& net, const std::string& file,
                               const bool tryRepair,
                               const bool emptyDestinationsAllowed,
                               const bool ignoreErrors) :
    SUMORouteHandler(file),
    myNet(net),
    myActivePerson(0),
    myActiveContainerPlan(0),
    myActiveContainerPlanSize(0),
    myTryRepair(tryRepair),
    myEmptyDestinationsAllowed(emptyDestinationsAllowed),
    myErrorOutput(ignoreErrors ? MsgHandler::getWarningInstance() : MsgHandler::getErrorInstance()),
    myBegin(string2time(OptionsCont::getOptions().getString("begin"))),
    myKeepVTypeDist(OptionsCont::getOptions().getBool("keep-vtype-distributions")),
    myCurrentVTypeDistribution(0),
    myCurrentAlternatives(0) {
    myActiveRoute.reserve(100);
}


RORouteHandler::~RORouteHandler() {
}


void
RORouteHandler::parseFromViaTo(std::string element,
                               const SUMOSAXAttributes& attrs) {
    myActiveRoute.clear();
    bool useTaz = OptionsCont::getOptions().getBool("with-taz");
    if (useTaz && !myVehicleParameter->wasSet(VEHPARS_FROM_TAZ_SET) && !myVehicleParameter->wasSet(VEHPARS_TO_TAZ_SET)) {
        WRITE_WARNING("Taz usage was requested but no taz present in " + element + " '" + myVehicleParameter->id + "'!");
        useTaz = false;
    }
    bool ok = true;
    if ((useTaz || !attrs.hasAttribute(SUMO_ATTR_FROM)) && myVehicleParameter->wasSet(VEHPARS_FROM_TAZ_SET)) {
        const ROEdge* fromTaz = myNet.getEdge(myVehicleParameter->fromTaz + "-source");
        if (fromTaz == 0) {
            myErrorOutput->inform("Source taz '" + myVehicleParameter->fromTaz + "' not known for " + element + " '" + myVehicleParameter->id + "'!");
        } else if (fromTaz->getNumSuccessors() == 0) {
            myErrorOutput->inform("Source taz '" + myVehicleParameter->fromTaz + "' has no outgoing edges for " + element + " '" + myVehicleParameter->id + "'!");
        } else {
            myActiveRoute.push_back(fromTaz);
        }
    } else {
        parseEdges(attrs.getOpt<std::string>(SUMO_ATTR_FROM, myVehicleParameter->id.c_str(), ok, "", true),
                   myActiveRoute, "for " + element + " '" + myVehicleParameter->id + "'");
    }
    if (!attrs.hasAttribute(SUMO_ATTR_VIA)) {
        myInsertStopEdgesAt = (int)myActiveRoute.size();
    }
    ConstROEdgeVector viaEdges;
    parseEdges(attrs.getOpt<std::string>(SUMO_ATTR_VIA, myVehicleParameter->id.c_str(), ok, "", true),
               viaEdges, "for " + element + " '" + myVehicleParameter->id + "'");
    for (ConstROEdgeVector::const_iterator i = viaEdges.begin(); i != viaEdges.end(); ++i) {
        myActiveRoute.push_back(*i);
        myVehicleParameter->via.push_back((*i)->getID());
    }

    if ((useTaz || !attrs.hasAttribute(SUMO_ATTR_TO)) && myVehicleParameter->wasSet(VEHPARS_TO_TAZ_SET)) {
        const ROEdge* toTaz = myNet.getEdge(myVehicleParameter->toTaz + "-sink");
        if (toTaz == 0) {
            myErrorOutput->inform("Sink taz '" + myVehicleParameter->toTaz + "' not known for " + element + " '" + myVehicleParameter->id + "'!");
        } else if (toTaz->getNumPredecessors() == 0) {
            myErrorOutput->inform("Sink taz '" + myVehicleParameter->toTaz + "' has no incoming edges for " + element + " '" + myVehicleParameter->id + "'!");
        } else {
            myActiveRoute.push_back(toTaz);
        }
    } else {
        parseEdges(attrs.getOpt<std::string>(SUMO_ATTR_TO, myVehicleParameter->id.c_str(), ok, "", true),
                   myActiveRoute, "for " + element + " '" + myVehicleParameter->id + "'");
    }
    myActiveRouteID = "!" + myVehicleParameter->id;
    if (myVehicleParameter->routeid == "") {
        myVehicleParameter->routeid = myActiveRouteID;
    }
}


void
RORouteHandler::myStartElement(int element,
                               const SUMOSAXAttributes& attrs) {
    SUMORouteHandler::myStartElement(element, attrs);
    switch (element) {
        case SUMO_TAG_PERSON: {
            SUMOVTypeParameter* type = myNet.getVehicleTypeSecure(myVehicleParameter->vtypeid);
            if (type == 0) {
                myErrorOutput->inform("The vehicle type '" + myVehicleParameter->vtypeid + "' for person '" + myVehicleParameter->id + "' is not known.");
                type = myNet.getVehicleTypeSecure(DEFAULT_PEDTYPE_ID);
            }
            myActivePerson = new ROPerson(*myVehicleParameter, type);
            break;
        }
        case SUMO_TAG_RIDE: {
            std::vector<ROPerson::PlanItem*>& plan = myActivePerson->getPlan();
            const std::string pid = myVehicleParameter->id;
            bool ok = true;
            ROEdge* from = 0;
            if (attrs.hasAttribute(SUMO_ATTR_FROM)) {
                const std::string fromID = attrs.get<std::string>(SUMO_ATTR_FROM, pid.c_str(), ok);
                from = myNet.getEdge(fromID);
                if (from == 0) {
                    throw ProcessError("The from edge '" + fromID + "' within a ride of person '" + pid + "' is not known.");
                }
                if (!plan.empty() && plan.back()->getDestination() != from) {
                    throw ProcessError("Disconnected plan for person '" + myVehicleParameter->id + "' (" + fromID + "!=" + plan.back()->getDestination()->getID() + ").");
                }
            } else if (plan.empty()) {
                throw ProcessError("The start edge for person '" + pid + "' is not known.");
            }
            const std::string toID = attrs.get<std::string>(SUMO_ATTR_TO, pid.c_str(), ok);
            ROEdge* to = myNet.getEdge(toID);
            if (to == 0) {
                throw ProcessError("The to edge '" + toID + "' within a ride of person '" + pid + "' is not known.");
            }
            const std::string desc = attrs.get<std::string>(SUMO_ATTR_LINES, pid.c_str(), ok);
            const std::string busStop = attrs.getOpt<std::string>(SUMO_ATTR_BUS_STOP, pid.c_str(), ok, "");
            myActivePerson->addRide(from, to, desc, busStop);
            break;
        }
        case SUMO_TAG_CONTAINER:
            myActiveContainerPlan = new OutputDevice_String(false, 1);
            myActiveContainerPlanSize = 0;
            myActiveContainerPlan->openTag(SUMO_TAG_CONTAINER);
            (*myActiveContainerPlan) << attrs;
            break;
        case SUMO_TAG_TRANSPORT: {
            myActiveContainerPlan->openTag(SUMO_TAG_TRANSPORT);
            (*myActiveContainerPlan) << attrs;
            myActiveContainerPlan->closeTag();
            myActiveContainerPlanSize++;
            break;
        }
        case SUMO_TAG_TRANSHIP: {
            if (attrs.hasAttribute(SUMO_ATTR_EDGES)) {
                // copy walk as it is
                // XXX allow --repair?
                myActiveContainerPlan->openTag(SUMO_TAG_TRANSHIP);
                (*myActiveContainerPlan) << attrs;
                myActiveContainerPlan->closeTag();
                myActiveContainerPlanSize++;
            } else {
                //routePerson(attrs, *myActiveContainerPlan);
            }
            break;
        }
        case SUMO_TAG_FLOW:
            myActiveRouteProbability = DEFAULT_VEH_PROB;
            parseFromViaTo("flow", attrs);
            break;
        case SUMO_TAG_TRIP: {
            myActiveRouteProbability = DEFAULT_VEH_PROB;
            parseFromViaTo("trip", attrs);
        }
        break;
        default:
            break;
    }
}


void
RORouteHandler::openVehicleTypeDistribution(const SUMOSAXAttributes& attrs) {
    bool ok = true;
    myCurrentVTypeDistributionID = attrs.get<std::string>(SUMO_ATTR_ID, 0, ok);
    if (ok) {
        myCurrentVTypeDistribution = new RandomDistributor<SUMOVTypeParameter*>();
        if (attrs.hasAttribute(SUMO_ATTR_VTYPES)) {
            const std::string vTypes = attrs.get<std::string>(SUMO_ATTR_VTYPES, myCurrentVTypeDistributionID.c_str(), ok);
            StringTokenizer st(vTypes);
            while (st.hasNext()) {
                const std::string typeID = st.next();
                SUMOVTypeParameter* const type = myNet.getVehicleTypeSecure(typeID);
                if (type == 0) {
                    myErrorOutput->inform("Unknown vehicle type '" + typeID + "' in distribution '" + myCurrentVTypeDistributionID + "'.");
                } else {
                    myCurrentVTypeDistribution->add(type, 1.);
                }
            }
        }
    }
}


void
RORouteHandler::closeVehicleTypeDistribution() {
    if (myCurrentVTypeDistribution != 0) {
        if (myCurrentVTypeDistribution->getOverallProb() == 0) {
            delete myCurrentVTypeDistribution;
            myErrorOutput->inform("Vehicle type distribution '" + myCurrentVTypeDistributionID + "' is empty.");
        } else if (!myNet.addVTypeDistribution(myCurrentVTypeDistributionID, myCurrentVTypeDistribution)) {
            delete myCurrentVTypeDistribution;
            myErrorOutput->inform("Another vehicle type (or distribution) with the id '" + myCurrentVTypeDistributionID + "' exists.");
        }
        myCurrentVTypeDistribution = 0;
    }
}


void
RORouteHandler::openRoute(const SUMOSAXAttributes& attrs) {
    myActiveRoute.clear();
    myInsertStopEdgesAt = -1;
    // check whether the id is really necessary
    std::string rid;
    if (myCurrentAlternatives != 0) {
        myActiveRouteID = myCurrentAlternatives->getID();
        rid =  "distribution '" + myCurrentAlternatives->getID() + "'";
    } else if (myVehicleParameter != 0) {
        // ok, a vehicle is wrapping the route,
        //  we may use this vehicle's id as default
        myVehicleParameter->routeid = myActiveRouteID = "!" + myVehicleParameter->id; // !!! document this
        if (attrs.hasAttribute(SUMO_ATTR_ID)) {
            WRITE_WARNING("Ids of internal routes are ignored (vehicle '" + myVehicleParameter->id + "').");
        }
    } else {
        bool ok = true;
        myActiveRouteID = attrs.get<std::string>(SUMO_ATTR_ID, 0, ok);
        if (!ok) {
            return;
        }
        rid = "'" + myActiveRouteID + "'";
    }
    if (myVehicleParameter != 0) { // have to do this here for nested route distributions
        rid =  "for vehicle '" + myVehicleParameter->id + "'";
    }
    bool ok = true;
    if (attrs.hasAttribute(SUMO_ATTR_EDGES)) {
        parseEdges(attrs.get<std::string>(SUMO_ATTR_EDGES, myActiveRouteID.c_str(), ok), myActiveRoute, rid);
    }
    myActiveRouteRefID = attrs.getOpt<std::string>(SUMO_ATTR_REFID, myActiveRouteID.c_str(), ok, "");
    if (myActiveRouteRefID != "" && myNet.getRouteDef(myActiveRouteRefID) == 0) {
        myErrorOutput->inform("Invalid reference to route '" + myActiveRouteRefID + "' in route " + rid + ".");
    }
    if (myCurrentAlternatives != 0 && !attrs.hasAttribute(SUMO_ATTR_PROB)) {
        WRITE_WARNING("No probability for a route in '" + rid + "', using default.");
    }
    myActiveRouteProbability = attrs.getOpt<double>(SUMO_ATTR_PROB, myActiveRouteID.c_str(), ok, DEFAULT_VEH_PROB);
    if (ok && myActiveRouteProbability < 0) {
        myErrorOutput->inform("Invalid probability for route '" + myActiveRouteID + "'.");
    }
    myActiveRouteColor = attrs.hasAttribute(SUMO_ATTR_COLOR) ? new RGBColor(attrs.get<RGBColor>(SUMO_ATTR_COLOR, myActiveRouteID.c_str(), ok)) : 0;
    ok = true;
    myCurrentCosts = attrs.getOpt<double>(SUMO_ATTR_COST, myActiveRouteID.c_str(), ok, -1);
    if (ok && myCurrentCosts != -1 && myCurrentCosts < 0) {
        myErrorOutput->inform("Invalid cost for route '" + myActiveRouteID + "'.");
    }
}


void
RORouteHandler::myEndElement(int element) {
    SUMORouteHandler::myEndElement(element);
    switch (element) {
        case SUMO_TAG_VTYPE:
            if (myNet.addVehicleType(myCurrentVType)) {
                if (myCurrentVTypeDistribution != 0) {
                    myCurrentVTypeDistribution->add(myCurrentVType, myCurrentVType->defaultProbability);
                }
            }
            myCurrentVType = 0;
            break;
        case SUMO_TAG_TRIP:
            closeRoute(true);
            closeVehicle();
            delete myVehicleParameter;
            myVehicleParameter = 0;
            myInsertStopEdgesAt = -1;
            break;
        default:
            break;
    }
}


void
RORouteHandler::closeRoute(const bool mayBeDisconnected) {
    if (myActiveRoute.size() == 0) {
        if (myActiveRouteRefID != "" && myCurrentAlternatives != 0) {
            myCurrentAlternatives->addAlternativeDef(myNet.getRouteDef(myActiveRouteRefID));
            myActiveRouteID = "";
            myActiveRouteRefID = "";
            return;
        }
        if (myVehicleParameter != 0) {
            myErrorOutput->inform("The route for vehicle '" + myVehicleParameter->id + "' has no edges.");
        } else {
            myErrorOutput->inform("Route '" + myActiveRouteID + "' has no edges.");
        }
        myActiveRouteID = "";
        myActiveRouteStops.clear();
        return;
    }
    if (myActiveRoute.size() == 1 && myActiveRoute.front()->isTazConnector()) {
        myErrorOutput->inform("The routing information for vehicle '" + myVehicleParameter->id + "' is insufficient.");
        myActiveRouteID = "";
        myActiveRouteStops.clear();
        return;
    }
    RORoute* route = new RORoute(myActiveRouteID, myCurrentCosts, myActiveRouteProbability, myActiveRoute,
                                 myActiveRouteColor, myActiveRouteStops);
    myActiveRoute.clear();
    if (myCurrentAlternatives == 0) {
        if (myNet.getRouteDef(myActiveRouteID) != 0) {
            delete route;
            if (myVehicleParameter != 0) {
                myErrorOutput->inform("Another route for vehicle '" + myVehicleParameter->id + "' exists.");
            } else {
                myErrorOutput->inform("Another route (or distribution) with the id '" + myActiveRouteID + "' exists.");
            }
            myActiveRouteID = "";
            myActiveRouteStops.clear();
            return;
        } else {
            myCurrentAlternatives = new RORouteDef(myActiveRouteID, 0, mayBeDisconnected || myTryRepair, mayBeDisconnected);
            myCurrentAlternatives->addLoadedAlternative(route);
            myNet.addRouteDef(myCurrentAlternatives);
            myCurrentAlternatives = 0;
        }
    } else {
        myCurrentAlternatives->addLoadedAlternative(route);
    }
    myActiveRouteID = "";
    myActiveRouteStops.clear();
}


void
RORouteHandler::openRouteDistribution(const SUMOSAXAttributes& attrs) {
    // check whether the id is really necessary
    bool ok = true;
    std::string id;
    if (myVehicleParameter != 0) {
        // ok, a vehicle is wrapping the route,
        //  we may use this vehicle's id as default
        myVehicleParameter->routeid = id = "!" + myVehicleParameter->id; // !!! document this
        if (attrs.hasAttribute(SUMO_ATTR_ID)) {
            WRITE_WARNING("Ids of internal route distributions are ignored (vehicle '" + myVehicleParameter->id + "').");
        }
    } else {
        id = attrs.get<std::string>(SUMO_ATTR_ID, 0, ok);
        if (!ok) {
            return;
        }
    }
    // try to get the index of the last element
    int index = attrs.getOpt<int>(SUMO_ATTR_LAST, id.c_str(), ok, 0);
    if (ok && index < 0) {
        myErrorOutput->inform("Negative index of a route alternative (id='" + id + "').");
        return;
    }
    // build the alternative cont
    myCurrentAlternatives = new RORouteDef(id, index, myTryRepair, false);
    if (attrs.hasAttribute(SUMO_ATTR_ROUTES)) {
        ok = true;
        StringTokenizer st(attrs.get<std::string>(SUMO_ATTR_ROUTES, id.c_str(), ok));
        while (st.hasNext()) {
            const std::string routeID = st.next();
            const RORouteDef* route = myNet.getRouteDef(routeID);
            if (route == 0) {
                myErrorOutput->inform("Unknown route '" + routeID + "' in distribution '" + id + "'.");
            } else {
                myCurrentAlternatives->addAlternativeDef(route);
            }
        }
    }
}


void
RORouteHandler::closeRouteDistribution() {
    if (myCurrentAlternatives != 0) {
        if (myCurrentAlternatives->getOverallProb() == 0) {
            myErrorOutput->inform("Route distribution '" + myCurrentAlternatives->getID() + "' is empty.");
            delete myCurrentAlternatives;
        } else if (!myNet.addRouteDef(myCurrentAlternatives)) {
            myErrorOutput->inform("Another route (or distribution) with the id '" + myCurrentAlternatives->getID() + "' exists.");
            delete myCurrentAlternatives;
        }
        myCurrentAlternatives = 0;
    }
}


void
RORouteHandler::closeVehicle() {
    // get the vehicle id
    if (myVehicleParameter->departProcedure == DEPART_GIVEN && myVehicleParameter->depart < myBegin) {
        return;
    }
    // get vehicle type
    SUMOVTypeParameter* type = myNet.getVehicleTypeSecure(myVehicleParameter->vtypeid);
    if (type == 0) {
        myErrorOutput->inform("The vehicle type '" + myVehicleParameter->vtypeid + "' for vehicle '" + myVehicleParameter->id + "' is not known.");
        type = myNet.getVehicleTypeSecure(DEFAULT_VTYPE_ID);
    } else {
        if (!myKeepVTypeDist) {
            // fix the type id in case we used a distribution
            myVehicleParameter->vtypeid = type->id;
        }
    }
    if (type->vehicleClass == SVC_PEDESTRIAN) {
        WRITE_WARNING("Vehicle type '" + type->id + "' with vClass=pedestrian should only be used for persons and not for vehicle '" + myVehicleParameter->id + "'.");
    }
    // get the route
    RORouteDef* route = myNet.getRouteDef(myVehicleParameter->routeid);
    if (route == 0) {
        myErrorOutput->inform("The route of the vehicle '" + myVehicleParameter->id + "' is not known.");
        return;
    }
    if (route->getID()[0] != '!') {
        route = route->copy("!" + myVehicleParameter->id, myVehicleParameter->depart);
    }
    // build the vehicle
    if (!MsgHandler::getErrorInstance()->wasInformed()) {
        ROVehicle* veh = new ROVehicle(*myVehicleParameter, route, type, &myNet, myErrorOutput);
        if (myNet.addVehicle(myVehicleParameter->id, veh)) {
            registerLastDepart();
        }
    }
}


void
RORouteHandler::closePerson() {
    if (myActivePerson->getPlan().empty()) {
        WRITE_WARNING("Discarding person '" + myVehicleParameter->id + "' because it's plan is empty");
    } else {
        if (myNet.addPerson(myActivePerson)) {
            registerLastDepart();
        }
    }
    delete myVehicleParameter;
    myVehicleParameter = 0;
    myActivePerson = 0;
}


void
RORouteHandler::closeContainer() {
    myActiveContainerPlan->closeTag();
    if (myActiveContainerPlanSize > 0) {
        myNet.addContainer(myVehicleParameter->depart, myActiveContainerPlan->getString());
        registerLastDepart();
    } else {
        WRITE_WARNING("Discarding container '" + myVehicleParameter->id + "' because it's plan is empty");
    }
    delete myVehicleParameter;
    myVehicleParameter = 0;
    delete myActiveContainerPlan;
    myActiveContainerPlan = 0;
    myActiveContainerPlanSize = 0;
}


void
RORouteHandler::closeFlow() {
    // @todo: consider myScale?
    if (myVehicleParameter->repetitionNumber == 0) {
        delete myVehicleParameter;
        myVehicleParameter = 0;
        return;
    }
    // let's check whether vehicles had to depart before the simulation starts
    myVehicleParameter->repetitionsDone = 0;
    const SUMOTime offsetToBegin = myBegin - myVehicleParameter->depart;
    while (myVehicleParameter->repetitionsDone * myVehicleParameter->repetitionOffset < offsetToBegin) {
        myVehicleParameter->repetitionsDone++;
        if (myVehicleParameter->repetitionsDone == myVehicleParameter->repetitionNumber) {
            delete myVehicleParameter;
            myVehicleParameter = 0;
            return;
        }
    }
    if (myNet.getVehicleTypeSecure(myVehicleParameter->vtypeid) == 0) {
        myErrorOutput->inform("The vehicle type '" + myVehicleParameter->vtypeid + "' for flow '" + myVehicleParameter->id + "' is not known.");
    }
    if (myVehicleParameter->routeid[0] == '!' && myNet.getRouteDef(myVehicleParameter->routeid) == 0) {
        closeRoute(true);
    }
    if (myNet.getRouteDef(myVehicleParameter->routeid) == 0) {
        myErrorOutput->inform("The route '" + myVehicleParameter->routeid + "' for flow '" + myVehicleParameter->id + "' is not known.");
        delete myVehicleParameter;
        myVehicleParameter = 0;
        return;
    }
    myActiveRouteID = "";
    if (!MsgHandler::getErrorInstance()->wasInformed()) {
        if (myNet.addFlow(myVehicleParameter, OptionsCont::getOptions().getBool("randomize-flows"))) {
            registerLastDepart();
        } else {
            myErrorOutput->inform("Another flow with the id '" + myVehicleParameter->id + "' exists.");
        }
    } else {
        delete myVehicleParameter;
    }
    myVehicleParameter = 0;
    myInsertStopEdgesAt = -1;
}


void
RORouteHandler::addStop(const SUMOSAXAttributes& attrs) {
    if (myActiveContainerPlan != 0) {
        myActiveContainerPlan->openTag(SUMO_TAG_STOP);
        (*myActiveContainerPlan) << attrs;
        myActiveContainerPlan->closeTag();
        myActiveContainerPlanSize++;
        return;
    }
    std::string errorSuffix;
    if (myVehicleParameter != 0) {
        errorSuffix = " in vehicle '" + myVehicleParameter->id + "'.";
    } else {
        errorSuffix = " in route '" + myActiveRouteID + "'.";
    }
    SUMOVehicleParameter::Stop stop;
    bool ok = parseStop(stop, attrs, errorSuffix, myErrorOutput);
    if (!ok) {
        return;
    }
    // try to parse the assigned bus stop
    ROEdge* edge = 0;
    if (stop.busstop != "") {
        const SUMOVehicleParameter::Stop* busstop = myNet.getStoppingPlace(stop.busstop, SUMO_TAG_BUS_STOP);
        if (busstop == 0) {
            myErrorOutput->inform("Unknown bus stop '" + stop.busstop + "'" + errorSuffix);
            return;
        }
        stop.lane = busstop->lane;
        stop.endPos = busstop->endPos;
        stop.startPos = busstop->startPos;
        edge = myNet.getEdge(stop.lane.substr(0, stop.lane.rfind('_')));
    } // try to parse the assigned container stop
    else if (stop.containerstop != "") {
        const SUMOVehicleParameter::Stop* containerstop = myNet.getStoppingPlace(stop.containerstop, SUMO_TAG_CONTAINER_STOP);
        if (containerstop == 0) {
            myErrorOutput->inform("Unknown container stop '" + stop.containerstop + "'" + errorSuffix);
            return;
        }
        stop.lane = containerstop->lane;
        stop.endPos = containerstop->endPos;
        stop.startPos = containerstop->startPos;
        edge = myNet.getEdge(stop.lane.substr(0, stop.lane.rfind('_')));
    } // try to parse the assigned parking area
    else if (stop.parkingarea != "") {
        const SUMOVehicleParameter::Stop* parkingarea = myNet.getStoppingPlace(stop.parkingarea, SUMO_TAG_PARKING_AREA);
        if (parkingarea == 0) {
            myErrorOutput->inform("Unknown parking area '" + stop.parkingarea + "'" + errorSuffix);
            return;
        }
        stop.lane = parkingarea->lane;
        stop.endPos = parkingarea->endPos;
        stop.startPos = parkingarea->startPos;
        edge = myNet.getEdge(stop.lane.substr(0, stop.lane.rfind('_')));
    } else {
        // no, the lane and the position should be given
        stop.lane = attrs.getOpt<std::string>(SUMO_ATTR_LANE, 0, ok, "");
        if (!ok || stop.lane == "") {
            myErrorOutput->inform("A stop must be placed on a bus stop, a container stop, a parking area or a lane" + errorSuffix);
            return;
        }
        edge = myNet.getEdge(stop.lane.substr(0, stop.lane.rfind('_')));
        if (edge == 0) {
            myErrorOutput->inform("The lane '" + stop.lane + "' for a stop is not known" + errorSuffix);
            return;
        }
        stop.endPos = attrs.getOpt<double>(SUMO_ATTR_ENDPOS, 0, ok, edge->getLength());
        stop.startPos = attrs.getOpt<double>(SUMO_ATTR_STARTPOS, 0, ok, stop.endPos - 2 * POSITION_EPS);
        const bool friendlyPos = attrs.getOpt<bool>(SUMO_ATTR_FRIENDLY_POS, 0, ok, false);
        const double endPosOffset = edge->isInternal() ? edge->getNormalBefore()->getLength() : 0;
        if (!ok || !checkStopPos(stop.startPos, stop.endPos, edge->getLength() + endPosOffset, POSITION_EPS, friendlyPos)) {
            myErrorOutput->inform("Invalid start or end position for stop" + errorSuffix);
            return;
        }
    }
    if (myActivePerson != 0) {
        myActivePerson->addStop(stop, edge);
    } else if (myVehicleParameter != 0) {
        myVehicleParameter->stops.push_back(stop);
    } else {
        myActiveRouteStops.push_back(stop);
    }
    if (myInsertStopEdgesAt >= 0) {
        myActiveRoute.insert(myActiveRoute.begin() + myInsertStopEdgesAt, edge);
        myInsertStopEdgesAt++;
    }
}


void
RORouteHandler::parseEdges(const std::string& desc, ConstROEdgeVector& into,
                           const std::string& rid) {
    if (desc[0] == BinaryFormatter::BF_ROUTE) {
        std::istringstream in(desc, std::ios::binary);
        char c;
        in >> c;
        FileHelpers::readEdgeVector(in, into, rid);
    } else {
        for (StringTokenizer st(desc); st.hasNext();) {
            const std::string id = st.next();
            const ROEdge* edge = myNet.getEdge(id);
            if (edge == 0) {
                myErrorOutput->inform("The edge '" + id + "' within the route " + rid + " is not known.");
            } else {
                into.push_back(edge);
            }
        }
    }
}


void
RORouteHandler::addPersonTrip(const SUMOSAXAttributes& attrs) {
    bool ok = true;
    const char* const id = myVehicleParameter->id.c_str();
    assert(!attrs.hasAttribute(SUMO_ATTR_EDGES));
    const std::string fromID = attrs.get<std::string>(SUMO_ATTR_FROM, id, ok);
    const std::string toID = attrs.get<std::string>(SUMO_ATTR_TO, id, ok);
    const std::string busStop = attrs.getOpt<std::string>(SUMO_ATTR_BUS_STOP, id, ok, "");

    const ROEdge* from = myNet.getEdge(fromID);
    if (from == 0) {
        myErrorOutput->inform("The edge '" + fromID + "' within a walk of " + myVehicleParameter->id + " is not known."
                              + "\n The route can not be build.");
        ok = false;
    }
    const ROEdge* to = myNet.getEdge(toID);
    if (to == 0) {
        myErrorOutput->inform("The edge '" + toID + "' within a walk of " + myVehicleParameter->id + " is not known."
                              + "\n The route can not be build.");
        ok = false;
    }

    double departPos = 0.;
    double arrivalPos = 0.;
    if (attrs.hasAttribute(SUMO_ATTR_DEPARTPOS)) {
        WRITE_WARNING("The attribute departPos is no longer supported for walks, please use the person attribute, the arrivalPos of the previous step or explicit stops.");
    }
    if (attrs.hasAttribute(SUMO_ATTR_ARRIVALPOS)) {
        arrivalPos = SUMOVehicleParserHelper::parseWalkPos(SUMO_ATTR_ARRIVALPOS, id, to->getLength(),
                     attrs.get<std::string>(SUMO_ATTR_ARRIVALPOS, id, ok));
    }

    const std::string modes = attrs.getOpt<std::string>(SUMO_ATTR_MODES, id, ok, "");
    SVCPermissions modeSet = 0;
    for (StringTokenizer st(modes); st.hasNext();) {
        const std::string mode = st.next();
        if (mode == "car") {
            modeSet |= SVC_PASSENGER;
        } else if (mode == "bicycle") {
            modeSet |= SVC_BICYCLE;
        } else if (mode == "public") {
            modeSet |= SVC_BUS;
        } else {
            throw InvalidArgument("Unknown person mode '" + mode + "'.");
        }
    }
    const std::string types = attrs.getOpt<std::string>(SUMO_ATTR_VTYPES, id, ok, "");
    double walkFactor = attrs.getOpt<double>(SUMO_ATTR_WALKFACTOR, id, ok, OptionsCont::getOptions().getFloat("persontrip.walkfactor"));
    if (ok) {
        myActivePerson->addTrip(from, to, modeSet, types, departPos, arrivalPos, busStop, walkFactor);
    }
}


void
RORouteHandler::addWalk(const SUMOSAXAttributes& attrs) {
    // XXX allow --repair?
    bool ok = true;
    if (attrs.hasAttribute(SUMO_ATTR_ROUTE)) {
        const std::string routeID = attrs.get<std::string>(SUMO_ATTR_ROUTE, myVehicleParameter->id.c_str(), ok);
        RORouteDef* routeDef = myNet.getRouteDef(routeID);
        const RORoute* route = routeDef != 0 ? routeDef->getFirstRoute() : 0;
        if (route == 0) {
            throw ProcessError("The route '" + routeID + "' for walk of person '" + myVehicleParameter->id + "' is not known.");
        }
        myActiveRoute = route->getEdgeVector();
    } else {
        myActiveRoute.clear();
        parseEdges(attrs.get<std::string>(SUMO_ATTR_EDGES, myVehicleParameter->id.c_str(), ok), myActiveRoute, " walk for person '" + myVehicleParameter->id + "'");
    }
    const char* const objId = myVehicleParameter->id.c_str();
    const double duration = attrs.getOpt<double>(SUMO_ATTR_DURATION, objId, ok, -1);
    if (attrs.hasAttribute(SUMO_ATTR_DURATION) && duration <= 0) {
        throw ProcessError("Non-positive walking duration for  '" + myVehicleParameter->id + "'.");
    }
    const double speed = attrs.getOpt<double>(SUMO_ATTR_SPEED, objId, ok, -1.);
    if (attrs.hasAttribute(SUMO_ATTR_SPEED) && speed <= 0) {
        throw ProcessError("Non-positive walking speed for  '" + myVehicleParameter->id + "'.");
    }
    double departPos = 0.;
    double arrivalPos = 0.;
    if (attrs.hasAttribute(SUMO_ATTR_DEPARTPOS)) {
        WRITE_WARNING("The attribute departPos is no longer supported for walks, please use the person attribute, the arrivalPos of the previous step or explicit stops.");
    }
    if (attrs.hasAttribute(SUMO_ATTR_ARRIVALPOS)) {
        arrivalPos = SUMOVehicleParserHelper::parseWalkPos(SUMO_ATTR_ARRIVALPOS, objId, myActiveRoute.back()->getLength(),
                     attrs.get<std::string>(SUMO_ATTR_ARRIVALPOS, objId, ok));
    }
    const std::string busStop = attrs.getOpt<std::string>(SUMO_ATTR_BUS_STOP, objId, ok, "");
    if (ok) {
        myActivePerson->addWalk(myActiveRoute, duration, speed, departPos, arrivalPos, busStop);
    }
}


/****************************************************************************/