Examples with Connection org.lflang.lf.Connection used on opensource projects

Example 1 with Connection

use of org.lflang.lf.Connection in project lingua-franca by lf-lang.

the class FedASTUtils method addNetworkOutputControlReaction.

/**
 * Add a network control reaction for a given output port 'source' to
 * source's parent reactor. This reaction will send a port absent
 * message if the status of the output port is absent.
 *
 * @note Used in federated execution
 *
 * @param source The output port of the source federate
 * @param instance The federate instance is used to keep track of all
 *  network reactions and some relevant triggers
 * @param receivingPortID The ID of the receiving port
 * @param channelIndex The channel index of the sending port, if it is a multiport.
 * @param bankIndex The bank index of the sending federate, if it is a bank.
 * @param receivingFedID The ID of destination federate.
 * @param generator The GeneratorBase instance used to perform some target-specific actions
 * @param delay The delay value imposed on the connection using after
 */
private static void addNetworkOutputControlReaction(PortInstance source, FederateInstance instance, int receivingPortID, int bankIndex, int channelIndex, int receivingFedID, GeneratorBase generator, Delay delay) {
    LfFactory factory = LfFactory.eINSTANCE;
    Reaction reaction = factory.createReaction();
    // Top-level reactor.
    Reactor top = source.getParent().getParent().reactorDefinition;
    // If the sender or receiver is in a bank of reactors, then we want
    // these reactions to appear only in the federate whose bank ID matches.
    generator.setReactionBankIndex(reaction, bankIndex);
    // Add the output from the contained reactor as a source to
    // the reaction to preserve precedence order.
    VarRef newPortRef = factory.createVarRef();
    newPortRef.setContainer(source.getParent().getDefinition());
    newPortRef.setVariable(source.getDefinition());
    reaction.getSources().add(newPortRef);
    // Check whether the action already has been created.
    if (instance.networkOutputControlReactionsTrigger == null) {
        // The port has not been created.
        String triggerName = "outputControlReactionTrigger";
        // Find the trigger definition in the reactor definition, which could have been
        // generated for another federate instance if there are multiple instances
        // of the same reactor that are each distinct federates.
        Optional<Action> optTriggerInput = top.getActions().stream().filter(I -> I.getName().equals(triggerName)).findFirst();
        if (optTriggerInput.isEmpty()) {
            // If no trigger with the name "outputControlReactionTrigger" is
            // already added to the reactor definition, we need to create it
            // for the first time. The trigger is a logical action.
            Action newTriggerForControlReactionVariable = factory.createAction();
            newTriggerForControlReactionVariable.setName(triggerName);
            newTriggerForControlReactionVariable.setOrigin(ActionOrigin.LOGICAL);
            top.getActions().add(newTriggerForControlReactionVariable);
            // Now that the variable is created, store it in the federate instance
            instance.networkOutputControlReactionsTrigger = newTriggerForControlReactionVariable;
        } else {
            // If the "outputControlReactionTrigger" trigger is already
            // there, we can re-use it for this new reaction since a single trigger
            // will trigger
            // all network output control reactions.
            instance.networkOutputControlReactionsTrigger = optTriggerInput.get();
        }
    }
    // Add the trigger for all output control reactions to the list of triggers
    VarRef triggerRef = factory.createVarRef();
    triggerRef.setVariable(instance.networkOutputControlReactionsTrigger);
    reaction.getTriggers().add(triggerRef);
    // Generate the code
    reaction.setCode(factory.createCode());
    reaction.getCode().setBody(generator.generateNetworkOutputControlReactionBody(newPortRef, receivingPortID, receivingFedID, bankIndex, channelIndex, delay));
    // Make the reaction unordered w.r.t. other reactions in the top level.
    generator.makeUnordered(reaction);
    // Insert the newly generated reaction after the generated sender and
    // receiver top-level reactions.
    top.getReactions().add(reaction);
    // Add the network output control reaction to the federate instance's list
    // of network reactions
    instance.networkReactions.add(reaction);
}

Example 2 with Connection

use of org.lflang.lf.Connection in project lingua-franca by lf-lang.

the class FedASTUtils method findMaxSTP.

/**
 * Find the maximum STP offset for the given 'port'.
 *
 * An STP offset predicate can be nested in contained reactors in
 * the federate.
 * @param port The port to generate the STP list for.
 * @param generator The GeneratorBase instance used to perform some target-specific actions
 * @param reactor The top-level reactor (not the federate reactor)
 * @return The maximum STP as a TimeValue
 */
private static TimeValue findMaxSTP(Variable port, FederateInstance instance, GeneratorBase generator, Reactor reactor) {
    // Find a list of STP offsets (if any exists)
    List<Value> STPList = new LinkedList<>();
    // First, check if there are any connections to contained reactors that
    // need to be handled
    List<Connection> connectionsWithPort = ASTUtils.allConnections(reactor).stream().filter(c -> c.getLeftPorts().stream().anyMatch((VarRef v) -> v.getVariable().equals(port))).collect(Collectors.toList());
    // Find the list of reactions that have the port as trigger or source
    // (could be a variable name)
    List<Reaction> reactionsWithPort = ASTUtils.allReactions(reactor).stream().filter(r -> {
        // Check the triggers of reaction r first
        return r.getTriggers().stream().anyMatch(t -> {
            if (t instanceof VarRef) {
                // Check if the variables match
                return ((VarRef) t).getVariable() == port;
            } else {
                // Not a network port (startup or shutdown)
                return false;
            }
        }) || // Then check the sources of reaction r
        r.getSources().stream().anyMatch(s -> s.getVariable() == port);
    }).collect(Collectors.toList());
    // Find a list of STP offsets (if any exists)
    if (generator.isFederatedAndDecentralized()) {
        for (Reaction r : safe(reactionsWithPort)) {
            if (!instance.contains(r)) {
                continue;
            }
            // If not, assume it is zero
            if (r.getStp() != null) {
                if (r.getStp().getValue().getParameter() != null) {
                    List<Instantiation> instantList = new ArrayList<>();
                    instantList.add(instance.instantiation);
                    STPList.addAll(ASTUtils.initialValue(r.getStp().getValue().getParameter(), instantList));
                } else {
                    STPList.add(r.getStp().getValue());
                }
            }
        }
        // Check the children for STPs as well
        for (Connection c : safe(connectionsWithPort)) {
            VarRef childPort = c.getRightPorts().get(0);
            Reactor childReactor = (Reactor) childPort.getVariable().eContainer();
            // Find the list of reactions that have the port as trigger or
            // source (could be a variable name)
            List<Reaction> childReactionsWithPort = ASTUtils.allReactions(childReactor).stream().filter(r -> r.getTriggers().stream().anyMatch(t -> {
                if (t instanceof VarRef) {
                    // Check if the variables match
                    return ((VarRef) t).getVariable() == childPort.getVariable();
                } else {
                    // Not a network port (startup or shutdown)
                    return false;
                }
            }) || r.getSources().stream().anyMatch(s -> s.getVariable() == childPort.getVariable())).collect(Collectors.toList());
            for (Reaction r : safe(childReactionsWithPort)) {
                if (!instance.contains(r)) {
                    continue;
                }
                // If not, assume it is zero
                if (r.getStp() != null) {
                    if (r.getStp().getValue() instanceof Parameter) {
                        List<Instantiation> instantList = new ArrayList<>();
                        instantList.add(childPort.getContainer());
                        STPList.addAll(ASTUtils.initialValue(r.getStp().getValue().getParameter(), instantList));
                    } else {
                        STPList.add(r.getStp().getValue());
                    }
                }
            }
        }
    }
    return STPList.stream().map(ASTUtils::getLiteralTimeValue).filter(Objects::nonNull).reduce(TimeValue.ZERO, TimeValue::max);
}

Example 3 with Connection

use of org.lflang.lf.Connection in project lingua-franca by lf-lang.

the class ASTUtils method rerouteViaDelay.

/**
 * Take a connection and reroute it via an instance of a generated delay
 * reactor. This method returns a list to new connections to substitute
 * the original one.
 * @param connection The connection to reroute.
 * @param delayInstance The delay instance to route the connection through.
 */
private static List<Connection> rerouteViaDelay(Connection connection, Instantiation delayInstance) {
    List<Connection> connections = new ArrayList<>();
    Connection upstream = factory.createConnection();
    Connection downstream = factory.createConnection();
    VarRef input = factory.createVarRef();
    VarRef output = factory.createVarRef();
    Reactor delayClass = toDefinition(delayInstance.getReactorClass());
    // Establish references to the involved ports.
    input.setContainer(delayInstance);
    input.setVariable(delayClass.getInputs().get(0));
    output.setContainer(delayInstance);
    output.setVariable(delayClass.getOutputs().get(0));
    upstream.getLeftPorts().addAll(connection.getLeftPorts());
    upstream.getRightPorts().add(input);
    downstream.getLeftPorts().add(output);
    downstream.getRightPorts().addAll(connection.getRightPorts());
    downstream.setIterated(connection.isIterated());
    connections.add(upstream);
    connections.add(downstream);
    return connections;
}

Example 4 with Connection

use of org.lflang.lf.Connection in project lingua-franca by lf-lang.

the class ASTUtils method findConflictingConnectionsInModalReactors.

/**
 * Find connections in the given resource that would be conflicting writes if they were not located in mutually
 * exclusive modes.
 *
 * @param resource The AST.
 * @return a list of connections being able to be transformed
 */
public static Collection<Connection> findConflictingConnectionsInModalReactors(Resource resource) {
    var transform = new HashSet<Connection>();
    var reactors = Iterables.filter(IteratorExtensions.toIterable(resource.getAllContents()), Reactor.class);
    for (Reactor reactor : reactors) {
        if (!reactor.getModes().isEmpty()) {
            // Only for modal reactors
            var allWriters = HashMultimap.<Pair<Instantiation, Variable>, EObject>create();
            // Collect destinations
            for (var rea : allReactions(reactor)) {
                for (var eff : rea.getEffects()) {
                    if (eff.getVariable() instanceof Port) {
                        allWriters.put(Tuples.pair(eff.getContainer(), eff.getVariable()), rea);
                    }
                }
            }
            for (var con : ASTUtils.<Connection>collectElements(reactor, featurePackage.getReactor_Connections(), false, true)) {
                for (var port : con.getRightPorts()) {
                    allWriters.put(Tuples.pair(port.getContainer(), port.getVariable()), con);
                }
            }
            // Handle conflicting writers
            for (var key : allWriters.keySet()) {
                var writers = allWriters.get(key);
                if (writers.size() > 1) {
                    // has multiple sources
                    var writerModes = HashMultimap.<Mode, EObject>create();
                    // find modes
                    for (var writer : writers) {
                        if (writer.eContainer() instanceof Mode) {
                            writerModes.put((Mode) writer.eContainer(), writer);
                        } else {
                            writerModes.put(null, writer);
                        }
                    }
                    // Conflicting connection can only be handled if..
                    if (// no writer is on root level (outside of modes) and...
                    !writerModes.containsKey(null) && writerModes.keySet().stream().map(m -> writerModes.get(m)).allMatch(// all writers in a mode are either...
                    writersInMode -> // the only writer or...
                    writersInMode.size() == 1 || // all are reactions and hence ordered
                    writersInMode.stream().allMatch(w -> w instanceof Reaction))) {
                        // Add connections to transform list
                        writers.stream().filter(w -> w instanceof Connection).forEach(c -> transform.add((Connection) c));
                    }
                }
            }
        }
    }
    return transform;
}

Example 5 with Connection

use of org.lflang.lf.Connection in project lingua-franca by lf-lang.

the class LinguaFrancaSynthesis method transformReactorNetwork.

private Collection<KNode> transformReactorNetwork(ReactorInstance reactorInstance, Map<PortInstance, KPort> parentInputPorts, Map<PortInstance, KPort> parentOutputPorts, Map<ReactorInstance, KNode> allReactorNodes) {
    List<KNode> nodes = new ArrayList<>();
    Table<ReactorInstance, PortInstance, KPort> inputPorts = HashBasedTable.create();
    Table<ReactorInstance, PortInstance, KPort> outputPorts = HashBasedTable.create();
    Map<ReactionInstance, KNode> reactionNodes = new HashMap<>();
    Map<KPort, KNode> directConnectionDummyNodes = new HashMap<>();
    Multimap<ActionInstance, KPort> actionDestinations = HashMultimap.create();
    Multimap<ActionInstance, KPort> actionSources = HashMultimap.create();
    Map<TimerInstance, KNode> timerNodes = new HashMap<>();
    KNode startupNode = _kNodeExtensions.createNode();
    boolean startupUsed = false;
    KNode shutdownNode = _kNodeExtensions.createNode();
    boolean shutdownUsed = false;
    // Transform instances
    int index = 0;
    for (ReactorInstance child : ListExtensions.reverseView(reactorInstance.children)) {
        Boolean expansionState = MemorizingExpandCollapseAction.getExpansionState(child);
        Collection<KNode> rNodes = createReactorNode(child, expansionState != null ? expansionState : false, inputPorts, outputPorts, allReactorNodes);
        setLayoutOption(IterableExtensions.<KNode>head(rNodes), CoreOptions.PRIORITY, index);
        nodes.addAll(rNodes);
        index++;
    }
    // Create timers
    for (TimerInstance timer : reactorInstance.timers) {
        KNode node = associateWith(_kNodeExtensions.createNode(), timer.getDefinition());
        NamedInstanceUtil.linkInstance(node, timer);
        _utilityExtensions.setID(node, timer.uniqueID());
        nodes.add(node);
        Iterables.addAll(nodes, createUserComments(timer.getDefinition(), node));
        timerNodes.put(timer, node);
        _linguaFrancaShapeExtensions.addTimerFigure(node, timer);
    }
    // Create reactions
    for (ReactionInstance reaction : ListExtensions.reverseView(reactorInstance.reactions)) {
        int idx = reactorInstance.reactions.indexOf(reaction);
        KNode node = associateWith(_kNodeExtensions.createNode(), reaction.getDefinition());
        NamedInstanceUtil.linkInstance(node, reaction);
        _utilityExtensions.setID(node, reaction.uniqueID());
        nodes.add(node);
        Iterables.addAll(nodes, createUserComments(reaction.getDefinition(), node));
        reactionNodes.put(reaction, node);
        setLayoutOption(node, CoreOptions.PORT_CONSTRAINTS, PortConstraints.FIXED_SIDE);
        // always place with higher priority than reactor nodes
        setLayoutOption(node, CoreOptions.PRIORITY, (reactorInstance.reactions.size() - idx) * 10);
        // try order reactions vertically if in one layer
        setLayoutOption(node, LayeredOptions.POSITION, new KVector(0, idx));
        _linguaFrancaShapeExtensions.addReactionFigure(node, reaction);
        // connect input
        KPort port = null;
        for (TriggerInstance<?> trigger : reaction.triggers) {
            port = addInvisiblePort(node);
            setLayoutOption(port, CoreOptions.PORT_SIDE, PortSide.WEST);
            int triggersSize = reaction.triggers != null ? reaction.triggers.size() : 0;
            int sourcesSize = reaction.sources != null ? reaction.sources.size() : 0;
            if (getBooleanValue(REACTIONS_USE_HYPEREDGES) || triggersSize + sourcesSize == 1) {
                // manual adjustment disabling automatic one
                setLayoutOption(port, CoreOptions.PORT_BORDER_OFFSET, (double) -LinguaFrancaShapeExtensions.REACTION_POINTINESS);
            }
            if (trigger.isStartup()) {
                connect(createDependencyEdge(((TriggerInstance.BuiltinTriggerVariable) trigger.getDefinition()).definition), startupNode, port);
                startupUsed = true;
            } else if (trigger.isShutdown()) {
                connect(createDelayEdge(((TriggerInstance.BuiltinTriggerVariable) trigger.getDefinition()).definition), shutdownNode, port);
                shutdownUsed = true;
            } else if (trigger instanceof ActionInstance) {
                actionDestinations.put(((ActionInstance) trigger), port);
            } else if (trigger instanceof PortInstance) {
                KPort src = null;
                PortInstance triggerAsPort = (PortInstance) trigger;
                if (triggerAsPort.getParent() == reactorInstance) {
                    src = parentInputPorts.get(trigger);
                } else {
                    src = outputPorts.get(triggerAsPort.getParent(), trigger);
                }
                if (src != null) {
                    connect(createDependencyEdge(triggerAsPort.getDefinition()), src, port);
                }
            } else if (trigger instanceof TimerInstance) {
                KNode src = timerNodes.get(trigger);
                if (src != null) {
                    connect(createDependencyEdge(trigger.getDefinition()), src, port);
                }
            }
        }
        // port = null // create new ports
        for (TriggerInstance<?> dep : reaction.sources) {
            if (reaction.triggers.contains(dep))
                continue;
            if (!(getBooleanValue(REACTIONS_USE_HYPEREDGES) && port != null)) {
                port = addInvisiblePort(node);
                setLayoutOption(port, CoreOptions.PORT_SIDE, PortSide.WEST);
                int triggersSize = reaction.triggers != null ? reaction.triggers.size() : 0;
                int sourcesSize = reaction.sources != null ? reaction.sources.size() : 0;
                if (getBooleanValue(REACTIONS_USE_HYPEREDGES) || triggersSize + sourcesSize == 1) {
                    // manual adjustment disabling automatic one
                    setLayoutOption(port, CoreOptions.PORT_BORDER_OFFSET, (double) -LinguaFrancaShapeExtensions.REACTION_POINTINESS);
                }
            }
            if (dep instanceof PortInstance) {
                KPort src = null;
                PortInstance depAsPort = (PortInstance) dep;
                if (dep.getParent() == reactorInstance) {
                    src = parentInputPorts.get(dep);
                } else {
                    src = outputPorts.get(depAsPort.getParent(), dep);
                }
                if (src != null) {
                    connect(createDependencyEdge(dep.getDefinition()), src, port);
                }
            }
        }
        // connect outputs
        // create new ports
        port = null;
        Set<TriggerInstance<?>> iterSet = reaction.effects != null ? reaction.effects : new HashSet<>();
        for (TriggerInstance<?> effect : iterSet) {
            port = addInvisiblePort(node);
            setLayoutOption(port, CoreOptions.PORT_SIDE, PortSide.EAST);
            if (effect instanceof ActionInstance) {
                actionSources.put((ActionInstance) effect, port);
            } else if (effect instanceof PortInstance) {
                KPort dst = null;
                PortInstance effectAsPort = (PortInstance) effect;
                if (effectAsPort.isOutput()) {
                    dst = parentOutputPorts.get(effect);
                } else {
                    dst = inputPorts.get(effectAsPort.getParent(), effect);
                }
                if (dst != null) {
                    connect(createDependencyEdge(effect), port, dst);
                }
            }
        }
    }
    // Connect actions
    Set<ActionInstance> actions = new HashSet<>();
    actions.addAll(actionSources.keySet());
    actions.addAll(actionDestinations.keySet());
    for (ActionInstance action : actions) {
        KNode node = associateWith(_kNodeExtensions.createNode(), action.getDefinition());
        NamedInstanceUtil.linkInstance(node, action);
        _utilityExtensions.setID(node, action.uniqueID());
        nodes.add(node);
        Iterables.addAll(nodes, createUserComments(action.getDefinition(), node));
        setLayoutOption(node, CoreOptions.PORT_CONSTRAINTS, PortConstraints.FIXED_SIDE);
        Pair<KPort, KPort> ports = _linguaFrancaShapeExtensions.addActionFigureAndPorts(node, action.isPhysical() ? "P" : "L");
        // TODO handle variables?
        if (action.getMinDelay() != null && action.getMinDelay() != ActionInstance.DEFAULT_MIN_DELAY) {
            _kLabelExtensions.addOutsideBottomCenteredNodeLabel(node, String.format("min delay: %s", action.getMinDelay().toString()), 7);
        }
        // TODO default value?
        if (action.getDefinition().getMinSpacing() != null) {
            _kLabelExtensions.addOutsideBottomCenteredNodeLabel(node, String.format("min spacing: %s", action.getMinSpacing().toString()), 7);
        }
        if (!StringExtensions.isNullOrEmpty(action.getDefinition().getPolicy())) {
            _kLabelExtensions.addOutsideBottomCenteredNodeLabel(node, String.format("policy: %s", action.getPolicy().toString()), 7);
        }
        // connect source
        for (KPort source : actionSources.get(action)) {
            connect(createDelayEdge(action), source, ports.getKey());
        }
        // connect targets
        for (KPort target : actionDestinations.get(action)) {
            connect(createDelayEdge(action), ports.getValue(), target);
        }
    }
    // Transform connections.
    // First, collect all the source ports.
    List<PortInstance> sourcePorts = new LinkedList<>(reactorInstance.inputs);
    for (ReactorInstance child : reactorInstance.children) {
        sourcePorts.addAll(child.outputs);
    }
    for (PortInstance leftPort : sourcePorts) {
        KPort source = leftPort.getParent() == reactorInstance ? parentInputPorts.get(leftPort) : outputPorts.get(leftPort.getParent(), leftPort);
        for (SendRange sendRange : leftPort.getDependentPorts()) {
            for (RuntimeRange<PortInstance> rightRange : sendRange.destinations) {
                PortInstance rightPort = rightRange.instance;
                KPort target = rightPort.getParent() == reactorInstance ? parentOutputPorts.get(rightPort) : inputPorts.get(rightPort.getParent(), rightPort);
                // There should be a connection, but skip if not.
                Connection connection = sendRange.connection;
                if (connection != null) {
                    KEdge edge = createIODependencyEdge(connection, (leftPort.isMultiport() || rightPort.isMultiport()));
                    if (connection.getDelay() != null) {
                        KLabel delayLabel = _kLabelExtensions.addCenterEdgeLabel(edge, ASTUtils.toText(connection.getDelay()));
                        associateWith(delayLabel, connection.getDelay());
                        if (connection.isPhysical()) {
                            _linguaFrancaStyleExtensions.applyOnEdgePysicalDelayStyle(delayLabel, reactorInstance.isMainOrFederated() ? Colors.WHITE : Colors.GRAY_95);
                        } else {
                            _linguaFrancaStyleExtensions.applyOnEdgeDelayStyle(delayLabel);
                        }
                    } else if (connection.isPhysical()) {
                        KLabel physicalConnectionLabel = _kLabelExtensions.addCenterEdgeLabel(edge, "---");
                        _linguaFrancaStyleExtensions.applyOnEdgePysicalStyle(physicalConnectionLabel, reactorInstance.isMainOrFederated() ? Colors.WHITE : Colors.GRAY_95);
                    }
                    if (source != null && target != null) {
                        // check for inside loop (direct in -> out connection with delay)
                        if (parentInputPorts.values().contains(source) && parentOutputPorts.values().contains(target)) {
                            // edge.setLayoutOption(CoreOptions.INSIDE_SELF_LOOPS_YO, true) // Does not work as expected
                            // Introduce dummy node to enable direct connection (that is also hidden when collapsed)
                            KNode dummy = _kNodeExtensions.createNode();
                            if (directConnectionDummyNodes.containsKey(target)) {
                                dummy = directConnectionDummyNodes.get(target);
                            } else {
                                nodes.add(dummy);
                                directConnectionDummyNodes.put(target, dummy);
                                _kRenderingExtensions.addInvisibleContainerRendering(dummy);
                                _kNodeExtensions.setNodeSize(dummy, 0, 0);
                                KEdge extraEdge = createIODependencyEdge(null, (leftPort.isMultiport() || rightPort.isMultiport()));
                                connect(extraEdge, dummy, target);
                            }
                            connect(edge, source, dummy);
                        } else {
                            connect(edge, source, target);
                        }
                    }
                }
            }
        }
    }
    // Add startup/shutdown
    if (startupUsed) {
        _linguaFrancaShapeExtensions.addStartupFigure(startupNode);
        nodes.add(0, startupNode);
        setLayoutOption(startupNode, LayeredOptions.LAYERING_LAYER_CONSTRAINT, LayerConstraint.FIRST);
        if (getBooleanValue(REACTIONS_USE_HYPEREDGES)) {
            KPort port = addInvisiblePort(startupNode);
            startupNode.getOutgoingEdges().forEach(it -> {
                it.setSourcePort(port);
            });
        }
    }
    if (shutdownUsed) {
        _linguaFrancaShapeExtensions.addShutdownFigure(shutdownNode);
        nodes.add(0, shutdownNode);
        if (getBooleanValue(REACTIONS_USE_HYPEREDGES)) {
            // connect all edges to one port
            KPort port = addInvisiblePort(shutdownNode);
            shutdownNode.getOutgoingEdges().forEach(it -> {
                it.setSourcePort(port);
            });
        }
    }
    // Postprocess timer nodes
    if (getBooleanValue(REACTIONS_USE_HYPEREDGES)) {
        // connect all edges to one port
        for (KNode timerNode : timerNodes.values()) {
            KPort port = addInvisiblePort(timerNode);
            timerNode.getOutgoingEdges().forEach(it -> {
                it.setSourcePort(port);
            });
        }
    }
    // Add reaction order edges (add last to have them on top of other edges)
    if (reactorInstance.reactions.size() > 1) {
        KNode prevNode = reactionNodes.get(IterableExtensions.head(reactorInstance.reactions));
        Iterable<KNode> iterList = IterableExtensions.map(IterableExtensions.drop(reactorInstance.reactions, 1), reactionNodes::get);
        for (KNode node : iterList) {
            KEdge edge = createOrderEdge();
            edge.setSource(prevNode);
            edge.setTarget(node);
            edge.setProperty(CoreOptions.NO_LAYOUT, true);
            // Do not remove them, as they are needed for cycle detection
            KRendering edgeRendering = _kRenderingExtensions.getKRendering(edge);
            _kRenderingExtensions.setInvisible(edgeRendering, !getBooleanValue(SHOW_REACTION_ORDER_EDGES));
            _kRenderingExtensions.getInvisible(edgeRendering).setPropagateToChildren(true);
            // TODO this does not work work with incremental update (https://github.com/kieler/KLighD/issues/37)
            // if (!getBooleanValue(SHOW_REACTION_ORDER_EDGES)) edge.initiallyHide()
            prevNode = node;
        }
    }
    _modeDiagrams.handleModes(nodes, reactorInstance);
    return nodes;
}