Examples with Scalar gov.sandia.n2a.language.type.Scalar used on opensource projects

Example 6 with Scalar

use of gov.sandia.n2a.language.type.Scalar in project n2a by frothga.

the class InternalBackendData method analyze.

public void analyze(final EquationSet s) {
    System.out.println(s.name);
    if (s.connectionBindings != null) {
        // Note that populations have already been allocated in the constructor.
        endpoints = countLocalObject;
        countLocalObject += s.connectionBindings.size();
    }
    for (// we want the sub-lists to be ordered correctly
    Variable v : // we want the sub-lists to be ordered correctly
    s.ordered) {
        String className = "null";
        if (v.type != null)
            className = v.type.getClass().getSimpleName();
        System.out.println("  " + v.nameString() + " " + v.attributeString() + " " + className);
        if (v.name.equals("$index"))
            index = v;
        else if (v.name.equals("$init"))
            init = v;
        else if (v.name.equals("$live"))
            live = v;
        else if (v.name.equals("$n") && v.order == 0)
            n = v;
        else if (v.name.equals("$p") && v.order == 0)
            p = v;
        else if (v.name.equals("$type"))
            type = v;
        else if (v.name.equals("$xyz") && v.order == 0)
            xyz = v;
        else if (v.name.equals("$t")) {
            if (v.order == 0)
                t = v;
            else if (v.order == 1)
                dt = v;
        }
        if (v.hasAttribute("global")) {
            v.global = true;
            v.visit(new Visitor() {

                public boolean visit(Operator op) {
                    if (op instanceof AccessVariable) {
                        AccessVariable av = (AccessVariable) op;
                        if (av.reference.resolution.size() > 0)
                            addReferenceGlobal(av.reference, s);
                        return false;
                    }
                    if (op instanceof Output) {
                        Output o = (Output) op;
                        if (o.operands.length < 3) {
                            o.index = countGlobalObject++;
                            namesGlobalObject.add("columnName" + o.index);
                        }
                        // Continue descent, because parameters of output() may contain variable references
                        return true;
                    }
                    return true;
                }
            });
            if (// eliminate non-computed values, unless they refer to a variable outside the immediate equation set
            !v.hasAny(new String[] { "constant", "accessor", "readOnly" }) || v.hasAll(new String[] { "constant", "reference" })) {
                boolean initOnly = v.hasAttribute("initOnly");
                boolean updates = !initOnly && v.equations.size() > 0 && (v.derivative == null || v.hasAttribute("updates"));
                if (updates)
                    globalUpdate.add(v);
                if (v.hasAttribute("reference")) {
                    addReferenceGlobal(v.reference, s);
                } else {
                    boolean temporary = v.hasAttribute("temporary");
                    if (!temporary || v.hasUsers())
                        globalInit.add(v);
                    if (!temporary && !v.hasAttribute("dummy")) {
                        if (!v.hasAttribute("preexistent"))
                            globalMembers.add(v);
                        boolean external = false;
                        if (v.hasAttribute("externalWrite") || v.assignment != Variable.REPLACE) {
                            external = true;
                            globalBufferedExternalWrite.add(v);
                        }
                        if (external || (v.hasAttribute("externalRead") && updates)) {
                            external = true;
                            globalBufferedExternal.add(v);
                        }
                        if (external || v.hasAttribute("cycle")) {
                            globalBuffered.add(v);
                            if (!external) {
                                globalBufferedInternal.add(v);
                                if (!initOnly)
                                    globalBufferedInternalUpdate.add(v);
                            }
                        }
                    }
                }
            }
        } else // local
        {
            v.visit(new Visitor() {

                public boolean visit(Operator op) {
                    if (op instanceof AccessVariable) {
                        AccessVariable av = (AccessVariable) op;
                        if (av.reference.resolution.size() > 0)
                            addReferenceLocal(av.reference, s);
                        return false;
                    }
                    if (op instanceof Output) {
                        Output o = (Output) op;
                        if (o.operands.length < 3) {
                            o.index = countLocalObject++;
                            namesLocalObject.add("columnName" + o.index);
                        }
                        // Continue descent, because parameters of output() may contain variable references
                        return true;
                    }
                    return true;
                }
            });
            if (!v.hasAny(new String[] { "constant", "accessor", "readOnly" }) || v.hasAll(new String[] { "constant", "reference" })) {
                boolean initOnly = v.hasAttribute("initOnly");
                boolean updates = !initOnly && v.equations.size() > 0 && (v.derivative == null || v.hasAttribute("updates"));
                if (updates)
                    localUpdate.add(v);
                if (v.hasAttribute("reference")) {
                    addReferenceLocal(v.reference, s);
                } else {
                    boolean temporary = v.hasAttribute("temporary");
                    if (!temporary || v.hasUsers()) {
                        if (v.name.startsWith("$") || (temporary && v.neededBySpecial())) {
                            if (!v.name.equals("$index") && !v.name.equals("$live"))
                                localInitSpecial.add(v);
                        } else {
                            localInitRegular.add(v);
                        }
                    }
                    if (!temporary && !v.hasAttribute("dummy")) {
                        if (!v.hasAttribute("preexistent"))
                            localMembers.add(v);
                        boolean external = false;
                        if (v.hasAttribute("externalWrite") || v.assignment != Variable.REPLACE) {
                            external = true;
                            localBufferedExternalWrite.add(v);
                        }
                        if (external || (v.hasAttribute("externalRead") && updates)) {
                            external = true;
                            localBufferedExternal.add(v);
                        }
                        if (external || v.hasAttribute("cycle")) {
                            if (v.name.startsWith("$"))
                                localBufferedSpecial.add(v);
                            else
                                localBufferedRegular.add(v);
                            if (// v got here only by being a "cycle", not "externalRead" or "externalWrite"
                            !external) {
                                localBufferedInternal.add(v);
                                if (!initOnly)
                                    localBufferedInternalUpdate.add(v);
                            }
                        }
                    }
                }
            }
        }
    }
    for (// we need these to be in order by differential level, not by dependency
    Variable v : // we need these to be in order by differential level, not by dependency
    s.variables) {
        if (v.derivative != null && !v.hasAny(new String[] { "constant", "initOnly" })) {
            if (v.hasAttribute("global"))
                globalIntegrated.add(v);
            else
                localIntegrated.add(v);
        }
    }
    populationCanGrowOrDie = s.lethalP || s.lethalType || s.canGrow();
    if (n != null) {
        populationCanResize = globalMembers.contains(n);
        // See EquationSet.forceTemporaryStorageForSpecials() for a related issue.
        if (!populationCanResize && populationCanGrowOrDie && n.hasUsers()) {
            Backend.err.get().println("WARNING: $n can change (due to structural dynamics) but it was detected as a constant. Equations that depend on $n may give incorrect results.");
        }
    }
    if (index != null) {
        indexNext = countGlobalFloat++;
        namesGlobalFloat.add("indexNext");
        indexAvailable = countGlobalObject++;
        namesGlobalObject.add("indexAvailable");
    }
    if (// track instances
    s.connected || s.needInstanceTracking || populationCanResize) {
        // The reason populationCanResize forces use of the instances array is to enable pruning of parts when $n decreases.
        instances = countGlobalObject++;
        namesGlobalObject.add("instances");
        if (// in addition, track newly created instances
        s.connected) {
            firstborn = countGlobalFloat++;
            namesGlobalFloat.add("firstborn");
            newborn = countLocalFloat++;
            namesLocalFloat.add("newborn");
        }
    }
    if (p != null) {
        Pdependencies = new ArrayList<Variable>();
        for (Variable t : s.ordered) {
            if (t.hasAttribute("temporary") && p.dependsOn(t) != null) {
                Pdependencies.add(t);
            }
        }
    }
    populationIndex = 0;
    if (// check for null specifically to guard against the Wrapper equation set (which is not fully constructed)
    s.container != null && s.container.parts != null) {
        for (EquationSet p : s.container.parts) {
            if (p == s)
                break;
            populationIndex++;
        }
    }
    if (// connection-specific stuff
    s.connectionBindings != null) {
        int size = s.connectionBindings.size();
        // endpoints is allocated at the top of this function, because it is needed for reference handling in the variable analysis loop
        projectDependencies = new Object[size];
        projectReferences = new Object[size];
        count = new int[size];
        k = new Variable[size];
        max = new Variable[size];
        min = new Variable[size];
        project = new Variable[size];
        radius = new Variable[size];
        for (int i = 0; i < s.connectionBindings.size(); i++) {
            ConnectionBinding c = s.connectionBindings.get(i);
            count[i] = -1;
            k[i] = s.find(new Variable(c.alias + ".$k"));
            max[i] = s.find(new Variable(c.alias + ".$max"));
            min[i] = s.find(new Variable(c.alias + ".$min"));
            project[i] = s.find(new Variable(c.alias + ".$project"));
            radius[i] = s.find(new Variable(c.alias + ".$radius"));
            if (c.endpoint.accountableConnections != null) {
                AccountableConnection query = new AccountableConnection(s, c.alias);
                AccountableConnection ac = c.endpoint.accountableConnections.floor(query);
                if (// Only true if this endpoint is accountable.
                ac.equals(query)) {
                    // Allocate space for counter in target part
                    InternalBackendData endpointBed = (InternalBackendData) c.endpoint.backendData;
                    count[i] = endpointBed.countLocalFloat++;
                    endpointBed.namesLocalFloat.add(s.prefix() + ".$count");
                    if (// $count is referenced explicitly, so need to finish setting it up
                    ac.count != null) {
                        ac.count.readIndex = ac.count.writeIndex = count[i];
                    }
                }
            }
            // Note that countLocalObject has already been incremented above
            namesLocalObject.add(c.alias);
            if (project[i] != null) {
                ArrayList<Variable> dependencies = new ArrayList<Variable>();
                // Always assign, even if empty.
                projectDependencies[i] = dependencies;
                for (Variable t : s.ordered) {
                    if (t.hasAttribute("temporary") && project[i].dependsOn(t) != null) {
                        dependencies.add(t);
                    }
                }
                final TreeSet<VariableReference> references = new TreeSet<VariableReference>(referenceComparator);
                class ProjectVisitor extends Visitor {

                    public boolean visit(Operator op) {
                        if (op instanceof AccessVariable) {
                            AccessVariable av = (AccessVariable) op;
                            if (av.reference.resolution.size() > 0)
                                references.add(av.reference);
                            return false;
                        }
                        return true;
                    }
                }
                ProjectVisitor visitor = new ProjectVisitor();
                project[i].visit(visitor);
                for (Variable v : dependencies) v.visit(visitor);
                if (references.size() > 0)
                    projectReferences[i] = references;
            }
            c.resolution = translateResolution(c.resolution, s);
        }
    }
    // Locals
    for (Variable v : localMembers) {
        // in the type array rather than the float array.
        if (v.type instanceof Scalar && v.reference.variable == v) {
            v.readIndex = v.writeIndex = countLocalFloat++;
            namesLocalFloat.add(v.nameString());
        } else {
            v.readIndex = v.writeIndex = countLocalObject++;
            namesLocalObject.add(v.nameString());
        }
    }
    for (Variable v : localBufferedExternal) {
        if (v.type instanceof Scalar && v.reference.variable == v) {
            v.writeIndex = countLocalFloat++;
            namesLocalFloat.add("next_" + v.nameString());
        } else {
            v.writeIndex = countLocalObject++;
            namesLocalObject.add("next_" + v.nameString());
        }
    }
    for (Variable v : localBufferedInternal) {
        v.writeTemp = true;
        if (v.type instanceof Scalar && v.reference.variable == v) {
            v.writeIndex = countLocalTempFloat++;
            namesLocalTempFloat.add("next_" + v.nameString());
        } else {
            v.writeIndex = countLocalTempObject++;
            namesLocalTempObject.add("next_" + v.nameString());
        }
    }
    // Globals
    for (Variable v : globalMembers) {
        if (v.type instanceof Scalar && v.reference.variable == v) {
            v.readIndex = v.writeIndex = countGlobalFloat++;
            namesGlobalFloat.add(v.nameString());
        } else {
            v.readIndex = v.writeIndex = countGlobalObject++;
            namesGlobalObject.add(v.nameString());
        }
    }
    for (Variable v : globalBufferedExternal) {
        if (v.type instanceof Scalar && v.reference.variable == v) {
            v.writeIndex = countGlobalFloat++;
            namesGlobalFloat.add("next_" + v.nameString());
        } else {
            v.writeIndex = countGlobalObject++;
            namesGlobalObject.add("next_" + v.nameString());
        }
    }
    for (Variable v : globalBufferedInternal) {
        v.writeTemp = true;
        if (v.type instanceof Scalar && v.reference.variable == v) {
            v.writeIndex = countGlobalTempFloat++;
            namesGlobalTempFloat.add("next_" + v.nameString());
        } else {
            v.writeIndex = countGlobalTempObject++;
            namesGlobalTempObject.add("next_" + v.nameString());
        }
    }
    // fully temporary values
    for (Variable v : s.variables) {
        if (!v.hasAttribute("temporary"))
            continue;
        v.readTemp = v.writeTemp = true;
        if (v.hasAttribute("global")) {
            if (v.type instanceof Scalar && v.reference.variable == v) {
                v.readIndex = v.writeIndex = countGlobalTempFloat++;
                namesGlobalTempFloat.add(v.nameString());
            } else {
                v.readIndex = v.writeIndex = countGlobalTempObject++;
                namesGlobalTempObject.add(v.nameString());
            }
        } else {
            if (v.type instanceof Scalar && v.reference.variable == v) {
                v.readIndex = v.writeIndex = countLocalTempFloat++;
                namesLocalTempFloat.add(v.nameString());
            } else {
                v.readIndex = v.writeIndex = countLocalTempObject++;
                namesLocalTempObject.add(v.nameString());
            }
        }
    }
    if (live.hasAttribute("constant"))
        liveStorage = LIVE_CONSTANT;
    else if (live.hasAttribute("accessor"))
        liveStorage = LIVE_ACCESSOR;
    else
        // $live is "initOnly"
        liveStorage = LIVE_STORED;
    for (VariableReference r : localReference) r.resolution = translateResolution(r.resolution, s);
    for (VariableReference r : globalReference) r.resolution = translateResolution(r.resolution, s);
    // Type conversions
    String[] forbiddenAttributes = new String[] { "global", "constant", "accessor", "reference", "temporary", "dummy", "preexistent" };
    for (EquationSet target : s.getConversionTargets()) {
        if (s.connectionBindings == null) {
            if (target.connectionBindings != null)
                throw new EvaluationException("Can't change $type from compartment to connection.");
        } else {
            if (target.connectionBindings == null)
                throw new EvaluationException("Can't change $type from connection to compartment.");
        }
        Conversion conversion = new Conversion();
        conversions.put(target, conversion);
        // Match variables
        for (Variable v : target.variables) {
            if (v.name.equals("$type"))
                continue;
            if (v.hasAny(forbiddenAttributes))
                continue;
            Variable v2 = s.find(v);
            if (v2 != null && v2.equals(v)) {
                conversion.to.add(v);
                conversion.from.add(v2);
            }
        }
        // Match connection bindings
        if (// Since we checked above, we know that target is also a connection.
        s.connectionBindings != null) {
            conversion.bindings = new int[s.connectionBindings.size()];
            int i = 0;
            for (ConnectionBinding c : s.connectionBindings) {
                conversion.bindings[i] = -1;
                int j = 0;
                for (ConnectionBinding d : target.connectionBindings) {
                    if (c.alias.equals(d.alias)) {
                        conversion.bindings[i] = j;
                        break;
                    }
                    j++;
                }
                // Note: ALL bindings must match. There is no other mechanism for initializing the endpoints.
                if (conversion.bindings[i] < 0)
                    throw new EvaluationException("Unfulfilled connection binding during $type change.");
                i++;
            }
        }
    // TODO: Match populations?
    // Currently, any contained populations do not carry over to new instance. Instead, it must create them from scratch.
    }
}

Example 7 with Scalar

use of gov.sandia.n2a.language.type.Scalar in project n2a by frothga.

the class InternalBackendData method analyzeLastT.

/**
 *        Determine if time of last integration must be stored.
 *        Note: global (population) variables are integrated at same time as container using its dt value.
 *        Thus, we only handle local variables here.
 */
public void analyzeLastT(EquationSet s) {
    boolean hasIntegrated = localIntegrated.size() > 0;
    for (EquationSet p : s.parts) {
        if (hasIntegrated)
            break;
        hasIntegrated = ((InternalBackendData) p.backendData).globalIntegrated.size() > 0;
    }
    boolean dtCanChange = dt != null && dt.equations.size() > 0 && !dt.hasAttribute("initOnly");
    if (hasIntegrated && (eventTargets.size() > 0 || dtCanChange)) {
        lastT = new Variable("$lastT");
        lastT.readIndex = lastT.writeIndex = countLocalFloat++;
        namesLocalFloat.add(lastT.nameString());
        lastT.type = new Scalar(0);
    }
}

Example 8 with Scalar

use of gov.sandia.n2a.language.type.Scalar in project n2a by frothga.

the class InternalBackendData method analyzeEvents.

public static void analyzeEvents(final EquationSet s, final List<EventTarget> eventTargets, final List<Variable> eventReferences) {
    class EventVisitor extends Visitor {

        public boolean found;

        public boolean visit(Operator op) {
            if (op instanceof Event) {
                found = true;
                Event de = (Event) op;
                if (// this event has not yet been analyzed
                de.eventType == null) {
                    final EventTarget et = new EventTarget(de);
                    int targetIndex = eventTargets.indexOf(et);
                    if (// event target already exists
                    targetIndex >= 0) {
                        de.eventType = eventTargets.get(targetIndex);
                    } else // we must create a new event target, or more properly, fill in the event target we just used as a query object
                    {
                        // Create an entry and save the index
                        targetIndex = eventTargets.size();
                        eventTargets.add(et);
                        de.eventType = et;
                        et.container = s;
                        // Determine edge type
                        if (de.operands.length < 3) {
                            et.edge = EventTarget.RISE;
                        } else if (de.operands[2] instanceof Constant) {
                            Constant c = (Constant) de.operands[2];
                            if (c.value instanceof Text) {
                                Text t = (Text) c.value;
                                if (t.value.equalsIgnoreCase("nonzero"))
                                    et.edge = EventTarget.NONZERO;
                                else if (t.value.equalsIgnoreCase("change"))
                                    et.edge = EventTarget.CHANGE;
                                else if (t.value.equalsIgnoreCase("fall"))
                                    et.edge = EventTarget.FALL;
                                else
                                    et.edge = EventTarget.RISE;
                            } else {
                                Backend.err.get().println("ERROR: event() edge type must be a string.");
                                throw new Backend.AbortRun();
                            }
                        } else {
                            Backend.err.get().println("ERROR: event() edge type must be constant.");
                            throw new Backend.AbortRun();
                        }
                        // Allocate auxiliary variable
                        if (de.operands[0] instanceof AccessVariable) {
                            AccessVariable av = (AccessVariable) de.operands[0];
                            VariableReference reference = av.reference;
                            Variable v = reference.variable;
                            // then the user has broken the rule that we can't see temporaries in other parts.
                            if (v.hasAttribute("temporary") && v.container != s) {
                                Backend.err.get().println("WARNING: Cannot be temporary due to event monitor: " + v.container.name + "." + v.nameString() + " from " + s.name);
                                v.removeAttribute("temporary");
                            }
                            // so fall through to the !trackOne case below.
                            if (!v.hasAttribute("temporary")) {
                                // ensure it's buffered, so we can detect change
                                v.addAttribute("externalRead");
                                et.trackOne = true;
                                // just a holder for the reference
                                et.track = new Variable();
                                et.track.reference = reference;
                            }
                        }
                        if (// Expression, so create auxiliary variable. Aux not needed for NONZERO, because no change detection.
                        !et.trackOne && et.edge != EventTarget.NONZERO) {
                            et.track = new Variable("eventAux" + targetIndex, 0);
                            et.track.type = new Scalar(0);
                            et.track.reference = new VariableReference();
                            et.track.reference.variable = et.track;
                        }
                        // Locate any temporaries for evaluation. TODO: for more efficiency, we could have separate lists of temporaries for the condition and delay operands
                        // Tie into the dependency graph using a phantom variable (which can go away afterward without damaging the graph).
                        final Variable phantom = new Variable("event");
                        phantom.uses = new IdentityHashMap<Variable, Integer>();
                        for (int i = 0; i < et.event.operands.length; i++) et.event.operands[i].visit(new Visitor() {

                            public boolean visit(Operator op) {
                                if (op instanceof AccessVariable) {
                                    AccessVariable av = (AccessVariable) op;
                                    Variable v = av.reference.variable;
                                    if (!phantom.uses.containsKey(v))
                                        phantom.uses.put(v, 1);
                                    return false;
                                }
                                return true;
                            }
                        });
                        // Scan all variables in equation set to see if we need them
                        for (Variable t : s.variables) {
                            if (t.hasAttribute("temporary") && phantom.dependsOn(t) != null)
                                et.dependencies.add(t);
                        }
                        // Note the default is already set to -1 (no care)
                        class DelayVisitor extends Visitor {

                            TreeSet<EquationSet> containers = new TreeSet<EquationSet>();

                            public boolean visit(Operator op) {
                                if (op instanceof AccessVariable) {
                                    AccessVariable av = (AccessVariable) op;
                                    // could include the target part itself, if in fact we use local variables
                                    containers.add(av.reference.variable.container);
                                    return false;
                                }
                                return true;
                            }
                        }
                        DelayVisitor dv = new DelayVisitor();
                        if (de.operands.length >= 2) {
                            if (de.operands[1] instanceof Constant) {
                                Constant c = (Constant) de.operands[1];
                                et.delay = (float) ((Scalar) c.value).value;
                                if (et.delay < 0)
                                    et.delay = -1;
                            } else {
                                // indicates that we need to evaluate delay at run time
                                et.delay = -2;
                                de.operands[1].visit(dv);
                            }
                        }
                        // Set up monitors in source parts
                        class ConditionVisitor extends Visitor {

                            TreeSet<EquationSet> containers = new TreeSet<EquationSet>();

                            public boolean visit(Operator op) {
                                if (op instanceof AccessVariable) {
                                    AccessVariable av = (AccessVariable) op;
                                    Variable v = av.reference.variable;
                                    EquationSet sourceContainer = v.container;
                                    containers.add(sourceContainer);
                                    // Set up monitors for values that can vary during update.
                                    if (!v.hasAttribute("constant") && !v.hasAttribute("initOnly") && !et.monitors(sourceContainer)) {
                                        EventSource es = new EventSource(sourceContainer, et);
                                        // null means self-reference, a special case handled in Part
                                        if (sourceContainer != s)
                                            es.reference = av.reference;
                                        et.sources.add(es);
                                    }
                                    return false;
                                }
                                return true;
                            }
                        }
                        ConditionVisitor cv = new ConditionVisitor();
                        de.operands[0].visit(cv);
                        // Special case for event with no references that vary
                        if (et.sources.isEmpty()) {
                            // We can avoid creating a self monitor if we know for certain that the event will never fire
                            boolean neverFires = false;
                            if (de.operands[0] instanceof Constant) {
                                if (et.edge == EventTarget.NONZERO) {
                                    Type op0 = ((Constant) de.operands[0]).value;
                                    if (op0 instanceof Scalar) {
                                        neverFires = ((Scalar) op0).value == 0;
                                    } else {
                                        Backend.err.get().println("ERROR: Condition for event() must resolve to a number.");
                                        throw new Backend.AbortRun();
                                    }
                                } else {
                                    neverFires = true;
                                }
                            }
                            if (!neverFires) {
                                EventSource es = new EventSource(s, et);
                                // This is a self-reference, so es.reference should be null.
                                et.sources.add(es);
                            }
                        }
                        // Determine if monitor needs to test every target, or if one representative target is sufficient
                        for (EventSource source : et.sources) {
                            // associated with any given source instance, so every target must be evaluated separately.
                            if (cv.containers.size() > 1)
                                source.testEach = true;
                            if (dv.containers.size() > 1 || (dv.containers.size() == 1 && dv.containers.first() != source.container))
                                source.delayEach = true;
                        }
                    }
                }
            }
            return true;
        }
    }
    EventVisitor eventVisitor = new EventVisitor();
    for (Variable v : s.variables) {
        eventVisitor.found = false;
        v.visit(eventVisitor);
        if ((eventVisitor.found || v.dependsOnEvent()) && v.reference.variable != v)
            eventReferences.add(v);
    }
}

Example 9 with Scalar

use of gov.sandia.n2a.language.type.Scalar in project n2a by frothga.

the class Part method finish.

public boolean finish(Simulator simulator) {
    InternalBackendData bed = (InternalBackendData) equations.backendData;
    int populations = equations.parts.size();
    for (int i = 0; i < populations; i++) ((Population) valuesObject[i]).finish(simulator);
    if (bed.liveStorage == InternalBackendData.LIVE_STORED) {
        // early-out if we are already dead, to avoid another call to die()
        if (((Scalar) get(bed.live)).value == 0)
            return false;
    }
    // Events
    for (EventSource es : bed.eventSources) {
        @SuppressWarnings("unchecked") List<Instance> monitors = (ArrayList<Instance>) valuesObject[es.monitorIndex];
        if (monitors.size() == 0)
            continue;
        EventTarget eventType = es.target;
        if (es.testEach) {
            for (Instance i : monitors) {
                if (i == null)
                    continue;
                double delay = eventType.test(i, simulator);
                // the trigger condition was not satisfied
                if (delay < -1)
                    continue;
                EventSpikeSingle spike;
                if (// event was triggered, but timing is no-care
                delay < 0) {
                    spike = new EventSpikeSingleLatch();
                    // queue immediately after current cycle, so latches get set for next full cycle
                    spike.t = simulator.currentEvent.t;
                } else if (// process as close to current cycle as possible
                delay == 0) {
                    // fully execute the event (not latch it)
                    spike = new EventSpikeSingle();
                    // queue immediately
                    spike.t = simulator.currentEvent.t;
                } else {
                    // Is delay an quantum number of $t' steps?
                    double ratio = delay / event.dt;
                    int step = (int) Math.round(ratio);
                    if (Math.abs(ratio - step) < 1e-3) {
                        if (simulator.eventMode == Simulator.DURING)
                            spike = new EventSpikeSingleLatch();
                        else
                            spike = new EventSpikeSingle();
                        if (simulator.eventMode == Simulator.AFTER)
                            delay = (step + 1e-6) * event.dt;
                        else
                            delay = (step - 1e-6) * event.dt;
                    } else {
                        spike = new EventSpikeSingle();
                    }
                    spike.t = simulator.currentEvent.t + delay;
                }
                spike.eventType = eventType;
                spike.target = i;
                simulator.queueEvent.add(spike);
            }
        } else // All monitors share same condition, so only test one.
        {
            double delay = -2;
            for (Instance i : monitors) {
                if (i == null)
                    continue;
                delay = eventType.test(i, simulator);
                break;
            }
            // the trigger condition was not satisfied
            if (delay < -1)
                continue;
            if (// Each target instance may require a different delay.
            es.delayEach) {
                for (Instance i : monitors) {
                    if (i == null)
                        continue;
                    // This results in one redundant eval, of first entry in monitors. Not clear if it's worth the work to avoid this.
                    delay = eventType.delay(i, simulator);
                    EventSpikeSingle spike;
                    if (delay < 0) {
                        spike = new EventSpikeSingleLatch();
                        spike.t = simulator.currentEvent.t;
                    } else if (delay == 0) {
                        spike = new EventSpikeSingle();
                        spike.t = simulator.currentEvent.t;
                    } else {
                        double ratio = delay / event.dt;
                        int step = (int) Math.round(ratio);
                        if (Math.abs(ratio - step) < 1e-3) {
                            if (simulator.eventMode == Simulator.DURING)
                                spike = new EventSpikeSingleLatch();
                            else
                                spike = new EventSpikeSingle();
                            if (simulator.eventMode == Simulator.AFTER)
                                delay = (step + 1e-6) * event.dt;
                            else
                                delay = (step - 1e-6) * event.dt;
                        } else {
                            spike = new EventSpikeSingle();
                        }
                        spike.t = simulator.currentEvent.t + delay;
                    }
                    spike.eventType = eventType;
                    spike.target = i;
                    simulator.queueEvent.add(spike);
                }
            } else // All delays are the same.
            {
                EventSpikeMulti spike;
                if (delay < 0) {
                    spike = new EventSpikeMultiLatch();
                    spike.t = simulator.currentEvent.t;
                } else if (delay == 0) {
                    spike = new EventSpikeMulti();
                    spike.t = simulator.currentEvent.t;
                } else {
                    double ratio = delay / event.dt;
                    int step = (int) Math.round(ratio);
                    if (Math.abs(ratio - step) < 1e-3) {
                        if (simulator.eventMode == Simulator.DURING)
                            spike = new EventSpikeMultiLatch();
                        else
                            spike = new EventSpikeMulti();
                        if (simulator.eventMode == Simulator.AFTER)
                            delay = (step + 1e-6) * event.dt;
                        else
                            delay = (step - 1e-6) * event.dt;
                    } else {
                        spike = new EventSpikeMulti();
                    }
                    spike.t = simulator.currentEvent.t + delay;
                }
                spike.eventType = eventType;
                // We don't copy the array, just keep a reference to it. What could go wrong with this?
                // If a part dies and tries to remove itself from the list while it is being used to deliver spikes,
                // then we could get a null pointer exception. Solution is to synchronize access to the list.
                // If a connection is born while the spike is in flight, one could argue that it shouldn't
                // receive it, but one could also argue that it should. In nature these two things (spikes
                // and synapse creation) occur at vastly different timescales. Wouldn't a nascent synapse
                // receive spikes even as it is forming?
                spike.targets = monitors;
                simulator.queueEvent.add(spike);
            }
        }
    }
    // Other stuff
    if (bed.lastT != null)
        setFinal(bed.lastT, new Scalar(simulator.currentEvent.t));
    for (Variable v : bed.localBufferedExternal) setFinal(v, getFinal(v));
    for (Integer i : bed.eventLatches) valuesFloat[i] = 0;
    for (Variable v : bed.localBufferedExternalWrite) {
        switch(v.assignment) {
            case Variable.ADD:
                // initial value is zero-equivalent (additive identity)
                set(v, v.type);
                break;
            case Variable.MULTIPLY:
            case Variable.DIVIDE:
                // multiplicative identity
                if (v.type instanceof Matrix)
                    set(v, ((Matrix) v.type).identity());
                else
                    set(v, new Scalar(1));
                break;
            case Variable.MIN:
                if (v.type instanceof Matrix)
                    set(v, ((Matrix) v.type).clear(Double.POSITIVE_INFINITY));
                else
                    set(v, new Scalar(Double.POSITIVE_INFINITY));
                break;
            case Variable.MAX:
                if (v.type instanceof Matrix)
                    set(v, ((Matrix) v.type).clear(Double.NEGATIVE_INFINITY));
                else
                    set(v, new Scalar(Double.NEGATIVE_INFINITY));
                break;
        }
    }
    if (bed.type != null) {
        int type = (int) ((Scalar) get(bed.type)).value;
        if (type > 0) {
            ArrayList<EquationSet> split = equations.splits.get(type - 1);
            if (// Make sure $type != me. Otherwise it's a null operation
            split.size() > 1 || split.get(0) != equations) {
                // indicates that this instance is one of the resulting parts
                boolean used = false;
                int countParts = split.size();
                for (int i = 0; i < countParts; i++) {
                    EquationSet other = split.get(i);
                    Scalar splitPosition = new Scalar(i + 1);
                    if (other == equations && !used) {
                        used = true;
                        setFinal(bed.type, splitPosition);
                    } else {
                        InternalBackendData otherBed = (InternalBackendData) other.backendData;
                        Part p = new Part(other, (Part) container);
                        // If this is a connection, keep the same bindings
                        Conversion conversion = bed.conversions.get(other);
                        if (conversion.bindings != null) {
                            for (int j = 0; j < conversion.bindings.length; j++) {
                                p.valuesObject[otherBed.endpoints + conversion.bindings[j]] = valuesObject[bed.endpoints + j];
                            }
                        }
                        event.enqueue(p);
                        p.resolve();
                        // accountable connections are updated here
                        p.init(simulator);
                        // Copy over variables
                        int count = conversion.from.size();
                        for (int v = 0; v < count; v++) {
                            Variable from = conversion.from.get(v);
                            Variable to = conversion.to.get(v);
                            p.setFinal(to, get(from));
                        }
                        // Set $type to be our position in the split
                        p.setFinal(otherBed.type, splitPosition);
                    }
                }
                if (!used) {
                    die();
                    return false;
                }
            }
        }
    }
    if (equations.lethalP) {
        double p;
        if (bed.p.hasAttribute("temporary")) {
            InstanceTemporaries temp = new InstanceTemporaries(this, simulator, false);
            for (Variable v : bed.Pdependencies) {
                Type result = v.eval(temp);
                if (result != null && v.writeIndex >= 0)
                    temp.set(v, result);
            }
            Type result = bed.p.eval(temp);
            if (result == null)
                p = 1;
            else
                p = ((Scalar) result).value;
        } else {
            p = ((Scalar) get(bed.p)).value;
        }
        if (p == 0 || p < 1 && p < simulator.random.nextDouble()) {
            die();
            return false;
        }
    }
    if (equations.lethalConnection) {
        int count = equations.connectionBindings.size();
        for (int i = 0; i < count; i++) {
            if (!getPart(i).getLive()) {
                die();
                return false;
            }
        }
    }
    if (equations.lethalContainer) {
        if (!((Part) container).getLive()) {
            die();
            return false;
        }
    }
    return true;
}

Example 10 with Scalar

use of gov.sandia.n2a.language.type.Scalar in project n2a by frothga.

the class Part method die.

public void die() {
    // set $live to false, if it is stored in this part
    InternalBackendData bed = (InternalBackendData) equations.backendData;
    if (bed.liveStorage == InternalBackendData.LIVE_STORED) {
        set(bed.live, new Scalar(0));
    }
    // update accountable endpoints
    if (bed.count != null) {
        int length = bed.count.length;
        for (int i = 0; i < length; i++) {
            if (bed.count[i] >= 0) {
                Part p = (Part) valuesObject[bed.endpoints + i];
                p.valuesFloat[bed.count[i]]--;
            }
        }
    }
    // Release event monitors
    for (EventTarget et : bed.eventTargets) {
        for (EventSource es : et.sources) {
            // Don't bother with self-connection, since we are going away.
            if (es.reference == null)
                continue;
            Part source = (Part) valuesObject[es.reference.index];
            @SuppressWarnings("unchecked") ArrayList<Instance> monitors = (ArrayList<Instance>) source.valuesObject[es.monitorIndex];
            int index = monitors.indexOf(this);
            // Actually removing the element can cause a concurrent modification exception. Instead, the monitors array will get flushed next time an event processes it.
            monitors.set(index, null);
        }
    }
    ((Population) container.valuesObject[bed.populationIndex]).remove(this);
}