Example 6 with EquationEntry
use of gov.sandia.n2a.eqset.EquationEntry in project n2a by frothga.
the class BackendDataC method analyze.
public void analyze(final EquationSet s) {
System.out.println(s.name);
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("$n") && v.order == 0)
n = v;
else if (v.name.equals("$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("$index")) {
index = v;
// Don't let $index enter into any variable lists. Instead, always give it special treatment. In effect, it is a list of one.
continue;
} else if (v.name.equals("$live")) {
live = v;
// $live can never function as a regular variable because it is stored as a bit flag
continue;
} else if (v.name.equals("$t")) {
if (v.order == 0)
t = v;
else if (v.order == 1)
dt = v;
}
if (v.hasAny(new String[] { "constant", "accessor" }))
continue;
boolean initOnly = v.hasAttribute("initOnly");
boolean derivativeOrDependency = v.hasAttribute("derivativeOrDependency");
boolean temporary = v.hasAttribute("temporary");
boolean unusedTemporary = temporary && !v.hasUsers();
boolean updates = !initOnly && v.equations.size() > 0 && (v.derivative == null || v.hasAttribute("updates"));
if (v.hasAttribute("global")) {
if (updates && !unusedTemporary)
globalUpdate.add(v);
if (derivativeOrDependency)
globalDerivativeUpdate.add(v);
if (!v.hasAttribute("reference")) {
if (!unusedTemporary)
globalInit.add(v);
if (!temporary && !v.hasAttribute("dummy")) {
if (!v.hasAttribute("preexistent")) {
globalMembers.add(v);
// check if v.usedBy contains any variable that is not v's integral
if (derivativeOrDependency && v.derivative == null && v.usedBy != null) {
for (Object o : v.usedBy) {
if (o instanceof Variable && ((Variable) o).derivative != v) {
globalDerivativePreserve.add(v);
break;
}
}
}
}
boolean external = false;
if (!initOnly) {
if (v.name.equals("$t")) {
if (v.order > 1)
globalDerivative.add(v);
} else // any other variable
{
if (v.order > 0)
globalDerivative.add(v);
}
// The integration step has roughly the same effect as an external write.
if (v.hasAttribute("externalWrite") || v.assignment != Variable.REPLACE) {
external = true;
globalBufferedExternalWrite.add(v);
if (derivativeOrDependency)
globalBufferedExternalWriteDerivative.add(v);
}
if (external || (v.hasAttribute("externalRead") && updates)) {
external = true;
globalBufferedExternal.add(v);
if (derivativeOrDependency)
globalBufferedExternalDerivative.add(v);
}
}
if (external || v.hasAttribute("cycle")) {
globalBuffered.add(v);
if (!external) {
globalBufferedInternal.add(v);
if (!initOnly) {
globalBufferedInternalUpdate.add(v);
if (derivativeOrDependency)
globalBufferedInternalDerivative.add(v);
}
}
}
}
}
} else // local
{
if (updates && !unusedTemporary)
localUpdate.add(v);
if (derivativeOrDependency)
localDerivativeUpdate.add(v);
if (v.hasAttribute("reference")) {
if (v.reference.variable.container.canDie())
localReference.add(v.reference);
} else {
if (!unusedTemporary)
localInit.add(v);
if (!temporary && !v.hasAttribute("dummy")) {
if (!v.hasAttribute("preexistent")) {
localMembers.add(v);
if (derivativeOrDependency && v.derivative == null && v.usedBy != null) {
for (Object o : v.usedBy) {
if (o instanceof Variable && ((Variable) o).derivative != v) {
localDerivativePreserve.add(v);
break;
}
}
}
}
boolean external = false;
if (!initOnly) {
if (v.name.equals("$t")) {
if (v.order > 1)
localDerivative.add(v);
} else {
if (v.order > 0)
localDerivative.add(v);
}
if (v.hasAttribute("externalWrite") || v.assignment != Variable.REPLACE) {
external = true;
localBufferedExternalWrite.add(v);
if (derivativeOrDependency)
localBufferedExternalWriteDerivative.add(v);
}
if (external || (v.hasAttribute("externalRead") && updates)) {
external = true;
localBufferedExternal.add(v);
if (derivativeOrDependency)
localBufferedExternalDerivative.add(v);
}
}
if (external || v.hasAttribute("cycle")) {
localBuffered.add(v);
if (!external) {
localBufferedInternal.add(v);
if (!initOnly) {
localBufferedInternalUpdate.add(v);
if (derivativeOrDependency)
localBufferedInternalDerivative.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("constant", "initOnly")) {
if (v.hasAttribute("global"))
globalIntegrated.add(v);
else
localIntegrated.add(v);
}
}
// Purge any lists that consist solely of temporaries, as they accomplish nothing.
for (List<Variable> list : Arrays.asList(globalUpdate, globalDerivativeUpdate, globalInit, globalIntegrated, localUpdate, localDerivativeUpdate, localInit, localIntegrated)) {
boolean allTemporary = true;
for (Variable v : list) if (!v.hasAttribute("temporary"))
allTemporary = false;
if (allTemporary)
list.clear();
}
if (s.connectionBindings != null) {
for (ConnectionBinding c : s.connectionBindings) {
Variable v = s.find(new Variable(c.alias + ".$max"));
if (v == null)
v = s.find(new Variable(c.alias + ".$min"));
if (v != null)
accountableEndpoints.add(c.alias);
}
}
refcount = s.referenced && s.canDie();
needGlobalPreserve = globalIntegrated.size() > 0 || globalDerivativePreserve.size() > 0 || globalBufferedExternalWriteDerivative.size() > 0;
needGlobalDtor = needGlobalPreserve || globalDerivative.size() > 0;
needGlobalCtor = needGlobalDtor || index != null || n != null;
// Works correctly even if n is null.
canResize = globalMembers.contains(n);
trackInstances = s.connected || s.needInstanceTracking || canResize;
canGrowOrDie = s.lethalP || s.lethalType || s.canGrow();
needGlobalFinalizeN = s.container == null && (canResize || canGrowOrDie);
needGlobalFinalize = globalBufferedExternal.size() > 0 || needGlobalFinalizeN || (canResize && (canGrowOrDie || !n.hasAttribute("initOnly")));
if (s.connectionBindings != null) {
for (ConnectionBinding c : s.connectionBindings) {
Variable v = s.find(new Variable(c.alias + ".$k"));
EquationEntry e = null;
if (v != null)
e = v.equations.first();
if (e != null)
needK = true;
v = s.find(new Variable(c.alias + ".$max"));
e = null;
if (v != null)
e = v.equations.first();
if (e != null)
needMax = true;
v = s.find(new Variable(c.alias + ".$min"));
e = null;
if (v != null)
e = v.equations.first();
if (e != null)
needMin = true;
v = s.find(new Variable(c.alias + ".$radius"));
e = null;
if (v != null)
e = v.equations.first();
if (e != null)
needRadius = true;
if (s.find(new Variable(c.alias + ".$projectFrom")) != null)
hasProjectFrom = true;
if (s.find(new Variable(c.alias + ".$projectTo")) != null)
hasProjectTo = true;
}
}
if (eventTargets.size() > 0) {
for (EventTarget et : eventTargets) {
if (et.delay < -1) {
needLocalEventDelay = true;
break;
}
}
}
int flagCount = eventTargets.size();
if (live != null && !live.hasAny(new String[] { "constant", "accessor" }))
liveFlag = flagCount++;
if (flagCount == 0)
flagType = "";
else if (flagCount <= 8)
flagType = "uint8_t";
else if (flagCount <= 16)
flagType = "uint16_t";
else if (flagCount <= 32)
flagType = "uint32_t";
else if (flagCount <= 64)
flagType = "uint64_t";
else {
Backend.err.get().println("ERROR: Too many flags to fit in basic integer type");
throw new Backend.AbortRun();
}
needLocalPreserve = localIntegrated.size() > 0 || localDerivativePreserve.size() > 0 || localBufferedExternalWriteDerivative.size() > 0;
needLocalDtor = needLocalPreserve || localDerivative.size() > 0;
needLocalCtor = needLocalDtor || s.accountableConnections != null || refcount || index != null || localMembers.size() > 0;
needLocalDie = s.canDie() && (liveFlag >= 0 || s.connectionBindings == null || accountableEndpoints.size() > 0 || eventTargets.size() > 0);
needLocalInit = s.connectionBindings == null || localInit.size() > 0 || accountableEndpoints.size() > 0 || eventTargets.size() > 0;
needLocalFinalize = localBufferedExternal.size() > 0 || type != null || s.canDie();
}
Also used :
Variable(gov.sandia.n2a.eqset.Variable)
ConnectionBinding(gov.sandia.n2a.eqset.EquationSet.ConnectionBinding)
EquationEntry(gov.sandia.n2a.eqset.EquationEntry)
EventTarget(gov.sandia.n2a.backend.internal.InternalBackendData.EventTarget)
Example 7 with EquationEntry
use of gov.sandia.n2a.eqset.EquationEntry in project n2a by frothga.
the class JobC method generateDefinitions.
public void generateDefinitions(EquationSet s, StringBuilder result) throws Exception {
for (EquationSet p : s.parts) generateDefinitions(p, result);
CRenderer context = new CRenderer(result, s);
BackendDataC bed = (BackendDataC) s.backendData;
// -------------------------------------------------------------------
context.global = true;
// namespace for all functions associated with part s
String ns = prefix(s) + "_Population::";
// Population ctor
if (bed.needGlobalCtor) {
result.append(ns + prefix(s) + "_Population ()\n");
result.append("{\n");
if (bed.n != null) {
result.append(" n = 0;\n");
}
if (bed.index != null) {
result.append(" nextIndex = 0;\n");
}
if (bed.globalDerivative.size() > 0) {
result.append(" stackDerivative = 0;\n");
}
if (bed.needGlobalPreserve) {
result.append(" preserve = 0;\n");
}
result.append("}\n");
result.append("\n");
}
// Population dtor
if (bed.needGlobalDtor) {
result.append(ns + "~" + prefix(s) + "_Population ()\n");
result.append("{\n");
if (bed.globalDerivative.size() > 0) {
result.append(" while (stackDerivative)\n");
result.append(" {\n");
result.append(" Derivative * temp = stackDerivative;\n");
result.append(" stackDerivative = stackDerivative->next;\n");
result.append(" delete temp;\n");
result.append(" }\n");
}
if (bed.needGlobalPreserve) {
result.append(" if (preserve) delete preserve;\n");
}
result.append("}\n");
result.append("\n");
}
// Population create
result.append("Part * " + ns + "create ()\n");
result.append("{\n");
result.append(" " + prefix(s) + " * p = new " + prefix(s) + ";\n");
if (bed.pathToContainer == null)
result.append(" p->container = container;\n");
result.append(" return p;\n");
result.append("}\n");
result.append("\n");
// Population add / remove
if (bed.index != null) {
result.append("void " + ns + "add (Part * part)\n");
result.append("{\n");
result.append(" " + prefix(s) + " * p = (" + prefix(s) + " *) part;\n");
result.append(" if (p->__24index < 0) p->__24index = nextIndex++;\n");
if (bed.trackInstances) {
result.append(" p->before = &live;\n");
result.append(" p->after = live.after;\n");
result.append(" p->before->after = p;\n");
result.append(" p->after->before = p;\n");
}
result.append("}\n");
result.append("\n");
if (bed.trackInstances) {
result.append("void " + ns + "remove (Part * part)\n");
result.append("{\n");
result.append(" " + prefix(s) + " * p = (" + prefix(s) + " *) part;\n");
result.append(" if (p == old) old = old->after;\n");
result.append(" p->before->after = p->after;\n");
result.append(" p->after->before = p->before;\n");
result.append(" Population::remove (part);\n");
result.append("}\n");
result.append("\n");
}
}
// Population getTarget
if (s.connectionBindings != null) {
result.append("Population * " + ns + "getTarget (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
int i = 0;
for (ConnectionBinding c : s.connectionBindings) {
// TODO: Need a function to permute all descending paths to a class of populations.
// In the simplest form, it is a peer in our current container, so no iteration at all.
result.append(" case " + i++ + ": return & container->" + mangle(c.endpoint.name) + ";\n");
}
result.append(" default: return 0;\n");
result.append(" }\n");
result.append("}\n");
result.append("\n");
}
// Population init
result.append("void " + ns + "init ()\n");
result.append("{\n");
s.setInit(1);
// Zero out members
for (Variable v : bed.globalMembers) {
result.append(" " + mangle(v) + zero(v) + ";\n");
}
for (Variable v : bed.globalBufferedExternal) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
// declare buffer variables
for (Variable v : bed.globalBufferedInternal) {
result.append(" " + type(v) + " " + mangle("next_", v) + ";\n");
}
// no separate $ and non-$ phases, because only $variables work at the population level
for (Variable v : bed.globalInit) {
multiconditional(v, context, " ");
}
// finalize
for (Variable v : bed.globalBuffered) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
// clear variables that may be written externally before first finalize()
for (Variable v : bed.globalBufferedExternalWrite) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
// create instances
if (bed.n != null) {
if (s.connectionBindings != null) {
Backend.err.get().println("$n is not applicable to connections");
throw new Backend.AbortRun();
}
result.append(" resize (" + resolve(bed.n.reference, context, false) + ");\n");
}
// make connections
if (s.connectionBindings != null) {
// queue to evaluate our connections
result.append(" simulator.connect (this);\n");
}
s.setInit(0);
result.append("};\n");
result.append("\n");
// Population integrate
if (bed.globalIntegrated.size() > 0) {
result.append("void " + ns + "integrate ()\n");
result.append("{\n");
result.append(" EventStep * event = getEvent ();\n");
context.hasEvent = true;
result.append(" float dt = event->dt;\n");
result.append(" if (preserve)\n");
result.append(" {\n");
for (Variable v : bed.globalIntegrated) {
result.append(" " + resolve(v.reference, context, false) + " = preserve->" + mangle(v) + " + " + resolve(v.derivative.reference, context, false) + " * dt;\n");
}
result.append(" }\n");
result.append(" else\n");
result.append(" {\n");
for (Variable v : bed.globalIntegrated) {
result.append(" " + resolve(v.reference, context, false) + " += " + resolve(v.derivative.reference, context, false) + " * dt;\n");
}
result.append(" }\n");
context.hasEvent = false;
result.append("};\n");
result.append("\n");
}
// Population update
if (bed.globalUpdate.size() > 0) {
result.append("void " + ns + "update ()\n");
result.append("{\n");
for (Variable v : bed.globalBufferedInternalUpdate) {
result.append(" " + type(v) + " " + mangle("next_", v) + ";\n");
}
for (Variable v : bed.globalUpdate) {
multiconditional(v, context, " ");
}
for (Variable v : bed.globalBufferedInternalUpdate) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
if (s.connectionBindings == null) {
// TODO: find a better way to keep track of "new" parts. Problem: what if a part is "new" relative to several different connection types, and what if those connections are tested at different times?
result.append(" old = live.after;\n");
}
result.append("};\n");
result.append("\n");
}
// Population finalize
if (bed.needGlobalFinalize) {
result.append("bool " + ns + "finalize ()\n");
result.append("{\n");
if (// $n shares control with other specials, so must coordinate with them
bed.canResize && bed.n.derivative == null && bed.canGrowOrDie) {
if (// $n is explicitly assigned only once, so no need to monitor it for assigned values.
bed.n.hasAttribute("initOnly")) {
// -1 means to update $n from n. This can only be done after other parts are finalized, as they may impose structural dynamics via $p or $type.
result.append(" simulator.resize (this, -1);\n");
} else // $n may be assigned during the regular update cycle, so we need to monitor it.
{
result.append(" if (" + mangle("$n") + " != " + mangle("next_", "$n") + ") simulator.resize (this, " + mangle("next_", "$n") + ");\n");
result.append(" else simulator.resize (this, -1);\n");
}
}
for (Variable v : bed.globalBufferedExternal) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
for (Variable v : bed.globalBufferedExternalWrite) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
// Return value is generally ignored, except for top-level population.
boolean returnN = bed.needGlobalFinalizeN;
if (bed.canResize) {
if (bed.canGrowOrDie) {
if (// $n' exists
bed.n.derivative != null) {
// the rate of change in $n is pre-determined, so it relentlessly overrides any other structural dynamics
if (returnN) {
result.append(" if (n == 0) return false;\n");
returnN = false;
}
result.append(" simulator.resize (this, " + mangle("$n") + ");\n");
}
} else // $n is the only kind of structural dynamics, so simply do a resize() when needed
{
if (!bed.n.hasAttribute("initOnly")) {
if (returnN) {
result.append(" if (n == 0) return false;\n");
returnN = false;
}
result.append(" if (n != (int) " + mangle("$n") + ") simulator.resize (this, " + mangle("$n") + ");\n");
}
}
}
if (returnN) {
result.append(" return n;\n");
} else {
result.append(" return true;\n");
}
result.append("};\n");
result.append("\n");
}
// Population resize()
if (bed.n != null) {
result.append("void " + ns + "resize (int n)\n");
result.append("{\n");
if (bed.canResize && bed.canGrowOrDie && bed.n.derivative == null) {
result.append(" if (n < 0)\n");
result.append(" {\n");
result.append(" " + mangle("$n") + " = this->n;\n");
result.append(" return;\n");
result.append(" }\n");
result.append("\n");
}
result.append(" EventStep * event = container->getEvent ();\n");
result.append(" while (this->n < n)\n");
result.append(" {\n");
result.append(" Part * p = allocate ();\n");
result.append(" p->enterSimulation ();\n");
result.append(" event->enqueue (p);\n");
result.append(" p->init ();\n");
result.append(" }\n");
result.append("\n");
result.append(" Part * p = live.before;\n");
result.append(" while (this->n > n)\n");
result.append(" {\n");
result.append(" if (p == &live) N2A_THROW (\"Inconsistent $n\");\n");
result.append(" if (p->getLive ()) p->die ();\n");
result.append(" p = p->before;\n");
result.append(" }\n");
result.append("};\n");
result.append("\n");
}
// Population updateDerivative
if (bed.globalDerivativeUpdate.size() > 0) {
result.append("void " + ns + "updateDerivative ()\n");
result.append("{\n");
for (Variable v : bed.globalBufferedInternalDerivative) {
result.append(" " + type(v) + " " + mangle("next_", v) + ";\n");
}
for (Variable v : bed.globalDerivativeUpdate) {
multiconditional(v, context, " ");
}
for (Variable v : bed.globalBufferedInternalDerivative) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
result.append("};\n");
result.append("\n");
}
// Population finalizeDerivative
if (bed.globalBufferedExternalDerivative.size() > 0) {
result.append("void " + ns + "finalizeDerivative ()\n");
result.append("{\n");
for (Variable v : bed.globalBufferedExternalDerivative) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
for (Variable v : bed.globalBufferedExternalWriteDerivative) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
result.append("};\n");
result.append("\n");
}
if (bed.needGlobalPreserve) {
// Population snapshot
result.append("void " + ns + "snapshot ()\n");
result.append("{\n");
result.append(" preserve = new Preserve;\n");
for (Variable v : bed.globalIntegrated) {
result.append(" preserve->" + mangle(v) + " = " + mangle(v) + ";\n");
}
for (Variable v : bed.globalDerivativePreserve) {
result.append(" preserve->" + mangle(v) + " = " + mangle(v) + ";\n");
}
for (Variable v : bed.globalBufferedExternalWriteDerivative) {
result.append(" preserve->" + mangle("next_", v) + " = " + mangle("next_", v) + ";\n");
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
result.append("};\n");
result.append("\n");
// Population restore
result.append("void " + ns + "restore ()\n");
result.append("{\n");
for (Variable v : bed.globalDerivativePreserve) {
result.append(" " + mangle(v) + " = preserve->" + mangle(v) + ";\n");
}
for (Variable v : bed.globalBufferedExternalWriteDerivative) {
result.append(" " + mangle("next_", v) + " = preserve->" + mangle("next_", v) + ";\n");
}
result.append(" delete preserve;\n");
result.append(" preserve = 0;\n");
result.append("};\n");
result.append("\n");
}
if (bed.globalDerivative.size() > 0) {
// Population pushDerivative
result.append("void " + ns + "pushDerivative ()\n");
result.append("{\n");
result.append(" Derivative * temp = new Derivative;\n");
result.append(" temp->_next = stackDerivative;\n");
result.append(" stackDerivative = temp;\n");
for (Variable v : bed.globalDerivative) {
result.append(" temp->" + mangle(v) + " = " + mangle(v) + ";\n");
}
result.append("};\n");
result.append("\n");
// Population multiplyAddToStack
result.append("void " + ns + "multiplyAddToStack (float scalar)\n");
result.append("{\n");
for (Variable v : bed.globalDerivative) {
result.append(" stackDerivative->" + mangle(v) + " += " + mangle(v) + " * scalar;\n");
}
result.append("};\n");
result.append("\n");
// Population multiply
result.append("void " + ns + "multiply (float scalar)\n");
result.append("{\n");
for (Variable v : bed.globalDerivative) {
result.append(" " + mangle(v) + " *= scalar;\n");
}
result.append("};\n");
result.append("\n");
// Population addToMembers
result.append("void " + ns + "addToMembers ()\n");
result.append("{\n");
for (Variable v : bed.globalDerivative) {
result.append(" " + mangle(v) + " += stackDerivative->" + mangle(v) + ";\n");
}
result.append(" Derivative * temp = stackDerivative;\n");
result.append(" stackDerivative = stackDerivative->next;\n");
result.append(" delete temp;\n");
result.append("};\n");
result.append("\n");
}
// Population getK
if (bed.needK) {
result.append("int " + ns + "getK (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (ConnectionBinding c : s.connectionBindings) {
Variable v = s.find(new Variable(c.alias + ".$k"));
EquationEntry e = null;
if (v != null)
e = v.equations.first();
if (e != null) {
result.append(" case " + c.index + ": return ");
e.expression.render(context);
result.append(";\n");
}
}
result.append(" }\n");
result.append(" return 0;\n");
result.append("}\n");
result.append("\n");
}
// Population getMax
if (bed.needMax) {
result.append("int " + ns + "getMax (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (ConnectionBinding c : s.connectionBindings) {
Variable v = s.find(new Variable(c.alias + ".$max"));
EquationEntry e = null;
if (v != null)
e = v.equations.first();
if (e != null) {
result.append(" case " + c.index + ": return ");
e.expression.render(context);
result.append(";\n");
}
}
result.append(" }\n");
result.append(" return 0;\n");
result.append("}\n");
result.append("\n");
}
// Population getMin
if (bed.needMin) {
result.append("int " + ns + "getMin (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (ConnectionBinding c : s.connectionBindings) {
Variable v = s.find(new Variable(c.alias + ".$min"));
EquationEntry e = null;
if (v != null)
e = v.equations.first();
if (e != null) {
result.append(" case " + c.index + ": return ");
e.expression.render(context);
result.append(";\n");
}
}
result.append(" }\n");
result.append(" return 0;\n");
result.append("}\n");
result.append("\n");
}
// Population getRadius
if (bed.needRadius) {
result.append("int " + ns + "getRadius (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (ConnectionBinding c : s.connectionBindings) {
Variable v = s.find(new Variable(c.alias + ".$radius"));
EquationEntry e = null;
if (v != null)
e = v.equations.first();
if (e != null) {
result.append(" case " + c.index + ": return ");
e.expression.render(context);
result.append(";\n");
}
}
result.append(" }\n");
result.append(" return 0;\n");
result.append("}\n");
result.append("\n");
}
if (bed.needGlobalPath) {
result.append("void " + ns + "path (String & result)\n");
result.append("{\n");
if (// Will our container provide a non-empty path?
((BackendDataC) s.container.backendData).needLocalPath) {
result.append(" container->path (result);\n");
result.append(" result += \"." + s.name + "\";\n");
} else {
result.append(" result = \"" + s.name + "\";\n");
}
result.append("}\n");
result.append("\n");
}
// -------------------------------------------------------------------
context.global = false;
ns = prefix(s) + "::";
// Unit ctor
if (bed.needLocalCtor || s.parts.size() > 0) {
result.append(ns + prefix(s) + " ()\n");
result.append("{\n");
if (bed.localDerivative.size() > 0) {
result.append(" stackDerivative = 0;\n");
}
if (bed.needLocalPreserve) {
result.append(" preserve = 0;\n");
}
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".container = this;\n");
}
if (s.accountableConnections != null) {
for (EquationSet.AccountableConnection ac : s.accountableConnections) {
result.append(" int " + prefix(ac.connection) + "_" + mangle(ac.alias) + "_count = 0;\n");
}
}
if (bed.refcount) {
result.append(" refcount = 0;\n");
}
if (bed.index != null) {
// -1 indicates that an index needs to be assigned. This should only be done once.
result.append(" __24index = -1;\n");
}
if (bed.localMembers.size() > 0) {
result.append(" clear ();\n");
}
result.append("}\n");
result.append("\n");
}
// Unit dtor
if (bed.needLocalDtor) {
result.append(ns + "~" + prefix(s) + " ()\n");
result.append("{\n");
if (bed.localDerivative.size() > 0) {
result.append(" while (stackDerivative)\n");
result.append(" {\n");
result.append(" Derivative * temp = stackDerivative;\n");
result.append(" stackDerivative = stackDerivative->next;\n");
result.append(" delete temp;\n");
result.append(" }\n");
}
if (bed.needLocalPreserve) {
result.append(" if (preserve) delete preserve;\n");
}
result.append("}\n");
result.append("\n");
}
// Unit clear
if (bed.localMembers.size() > 0) {
result.append("void " + ns + "clear ()\n");
result.append("{\n");
for (Variable v : bed.localMembers) {
result.append(" " + mangle(v) + zero(v) + ";\n");
}
result.append("}\n");
result.append("\n");
}
// Unit setPeriod
if (// instance of top-level population, so set period on wrapper whenever our period changes
s.container == null) {
result.append("void " + ns + "setPeriod (float dt)\n");
result.append("{\n");
result.append(" PartTime::setPeriod (dt);\n");
result.append(" if (container->visitor->event != visitor->event) container->setPeriod (dt);\n");
result.append("}\n");
result.append("\n");
}
// Unit die
if (bed.needLocalDie) {
result.append("void " + ns + "die ()\n");
result.append("{\n");
// tag part as dead
if (// $live is stored in this part
bed.liveFlag >= 0) {
result.append(" flags &= ~((" + bed.flagType + ") 0x1 << " + bed.liveFlag + ");\n");
}
// instance counting
if (s.connectionBindings == null)
result.append(" container->" + mangle(s.name) + ".n--;\n");
for (String alias : bed.accountableEndpoints) {
result.append(" " + mangle(alias) + "->" + prefix(s) + "_" + mangle(alias) + "_count--;\n");
}
// release event monitors
for (EventTarget et : bed.eventTargets) {
for (EventSource es : et.sources) {
String part = "";
if (es.reference != null)
part = resolveContainer(es.reference, context, "");
result.append(" removeMonitor (" + part + "eventMonitor_" + prefix(s) + ", this);\n");
}
}
result.append("}\n");
result.append("\n");
}
// Unit enterSimulation
if (bed.localReference.size() > 0) {
result.append("void " + ns + "enterSimulation ()\n");
result.append("{\n");
// String rather than EquationSet, because we may have references to several different instances of the same EquationSet, and all must be accounted
TreeSet<String> touched = new TreeSet<String>();
for (VariableReference r : bed.localReference) {
String container = resolveContainer(r, context, "");
if (touched.add(container))
result.append(" " + container + "refcount++;\n");
}
result.append("}\n");
result.append("\n");
}
// Unit leaveSimulation
{
result.append("void " + ns + "leaveSimulation ()\n");
result.append("{\n");
String container = "container->";
if (bed.pathToContainer != null)
container = mangle(bed.pathToContainer) + "->" + container;
result.append(" " + container + mangle(s.name) + ".remove (this);\n");
TreeSet<String> touched = new TreeSet<String>();
for (VariableReference r : bed.localReference) {
container = resolveContainer(r, context, "");
if (touched.add(container))
result.append(" " + container + "refcount--;\n");
}
result.append("}\n");
result.append("\n");
}
// Unit isFree
if (bed.refcount) {
result.append("bool " + ns + "isFree ()\n");
result.append("{\n");
result.append(" return refcount == 0;\n");
result.append("}\n");
result.append("\n");
}
// Unit init
if (bed.needLocalInit || s.parts.size() > 0) {
result.append("void " + ns + "init ()\n");
result.append("{\n");
s.setInit(1);
for (Variable v : bed.localBufferedExternal) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
for (EventTarget et : bed.eventTargets) {
if (et.track != null && et.track.name.startsWith("eventAux")) {
result.append(" " + et.track.name + " = 0;\n");
}
if (et.timeIndex >= 0) {
// Normal values are modulo 1 second. This initial value guarantees no match.
result.append(" eventTime" + et.timeIndex + " = 10;\n");
}
}
if (!bed.flagType.isEmpty()) {
if (bed.liveFlag < 0) {
result.append(" flags = 0;\n");
} else {
result.append(" flags = (" + bed.flagType + ") 0x1 << " + bed.liveFlag + ";\n");
}
}
// declare buffer variables
for (Variable v : bed.localBufferedInternal) {
result.append(" " + type(v) + " " + mangle("next_", v) + ";\n");
}
// $variables
for (Variable v : bed.localInit) {
// TODO: This doesn't allow in temporaries that a $variable may depend on. See InternalBackendData sorting section for example of how to handle this better.
if (!v.name.startsWith("$"))
continue;
if (v == bed.live)
continue;
if (v == bed.type) {
// TODO: Work out logic of $type better. This trap should not be here.
Backend.err.get().println("$type must be conditional, and it must never be assigned during init.");
throw new Backend.AbortRun();
}
multiconditional(v, context, " ");
}
// finalize $variables
if (bed.localBuffered.contains(bed.dt)) {
result.append(" EventStep * event = getEvent ();\n");
context.hasEvent = true;
}
if (bed.lastT) {
result.append(" lastT = simulator.currentEvent->t;\n");
}
for (// more than just localBufferedInternal, because we must finalize members as well
Variable v : // more than just localBufferedInternal, because we must finalize members as well
bed.localBuffered) {
if (!v.name.startsWith("$"))
continue;
if (v == bed.dt) {
result.append(" if (" + mangle("next_", v) + " != event->dt) setPeriod (" + mangle("next_", v) + ");\n");
} else {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
}
// non-$variables
for (Variable v : bed.localInit) {
if (v.name.startsWith("$"))
continue;
multiconditional(v, context, " ");
}
// finalize non-$variables
for (Variable v : bed.localBuffered) {
if (v.name.startsWith("$"))
continue;
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
// clear variables that may be written externally before first finalize()
for (Variable v : bed.localBufferedExternalWrite) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
// instance counting
if (s.connectionBindings == null)
result.append(" container->" + mangle(s.name) + ".n++;\n");
for (String alias : bed.accountableEndpoints) {
result.append(" " + mangle(alias) + "->" + prefix(s) + "_" + mangle(alias) + "_count++;\n");
}
// Request event monitors
for (EventTarget et : bed.eventTargets) {
for (EventSource es : et.sources) {
String part = "";
if (es.reference != null)
part = resolveContainer(es.reference, context, "");
result.append(" " + part + "eventMonitor_" + prefix(s) + ".push_back (this);\n");
}
}
// contained populations
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".init ();\n");
}
s.setInit(0);
context.hasEvent = false;
result.append("}\n");
result.append("\n");
}
// Unit integrate
if (bed.localIntegrated.size() > 0 || s.parts.size() > 0) {
result.append("void " + ns + "integrate ()\n");
result.append("{\n");
if (bed.localIntegrated.size() > 0) {
if (bed.lastT) {
result.append(" float dt = simulator.currentEvent->t - lastT;\n");
} else {
result.append(" EventStep * event = getEvent ();\n");
context.hasEvent = true;
result.append(" float dt = event->dt;\n");
}
// Note the resolve() call on the left-hand-side below has lvalue==false.
// Integration always takes place in the primary storage of a variable.
result.append(" if (preserve)\n");
result.append(" {\n");
for (Variable v : bed.localIntegrated) {
result.append(" " + resolve(v.reference, context, false) + " = preserve->" + mangle(v) + " + " + resolve(v.derivative.reference, context, false) + " * dt;\n");
}
result.append(" }\n");
result.append(" else\n");
result.append(" {\n");
for (Variable v : bed.localIntegrated) {
result.append(" " + resolve(v.reference, context, false) + " += " + resolve(v.derivative.reference, context, false) + " * dt;\n");
}
result.append(" }\n");
}
// contained populations
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".integrate ();\n");
}
context.hasEvent = false;
result.append("}\n");
result.append("\n");
}
// Unit update
if (bed.localUpdate.size() > 0 || s.parts.size() > 0) {
result.append("void " + ns + "update ()\n");
result.append("{\n");
for (Variable v : bed.localBufferedInternalUpdate) {
result.append(" " + type(v) + " " + mangle("next_", v) + ";\n");
}
for (Variable v : bed.localUpdate) {
multiconditional(v, context, " ");
}
for (Variable v : bed.localBufferedInternalUpdate) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
// contained populations
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".update ();\n");
}
result.append("}\n");
result.append("\n");
}
// Unit finalize
if (bed.needLocalFinalize || s.parts.size() > 0) {
result.append("bool " + ns + "finalize ()\n");
result.append("{\n");
// contained populations
for (EquationSet e : s.parts) {
// ignore return value
result.append(" " + mangle(e.name) + ".finalize ();\n");
}
// Early-out if we are already dead
if (// $live is stored in this part
bed.liveFlag >= 0) {
// early-out if we are already dead, to avoid another call to die()
result.append(" if (! (flags & (" + bed.flagType + ") 0x1 << " + bed.liveFlag + ")) return false;\n");
}
// Preemptively fetch current event
boolean needT = bed.eventSources.size() > 0;
for (Variable v : bed.localBufferedExternal) {
if (v == bed.dt)
needT = true;
}
if (needT) {
result.append(" EventStep * event = getEvent ();\n");
context.hasEvent = true;
}
// Events
boolean declaredFire = false;
for (EventSource es : bed.eventSources) {
EventTarget et = es.target;
String eventMonitor = "eventMonitor_" + prefix(et.container);
if (es.testEach) {
result.append(" for (Part * p : " + eventMonitor + ")\n");
result.append(" {\n");
result.append(" if (! p || ! p->eventTest (" + et.valueIndex + ")) continue;\n");
eventGenerate(" ", et, context, false);
result.append(" }\n");
} else // All monitors share same condition, so only test one.
{
if (declaredFire) {
result.append(" fire = false;\n");
} else {
result.append(" bool fire = false;\n");
declaredFire = true;
}
// Find first non-null part.
result.append(" for (auto p : " + eventMonitor + ")\n");
result.append(" {\n");
result.append(" if (p)\n");
result.append(" {\n");
result.append(" fire = p->eventTest (" + et.valueIndex + ");\n");
result.append(" break;\n");
result.append(" }\n");
result.append(" }\n");
result.append(" if (fire)\n");
result.append(" {\n");
if (// Each target instance may require a different delay.
es.delayEach) {
result.append(" for (auto p : " + eventMonitor + ")\n");
result.append(" {\n");
result.append(" if (! p) continue;\n");
eventGenerate(" ", et, context, false);
result.append(" }\n");
} else // All delays are the same.
{
eventGenerate(" ", et, context, true);
}
result.append(" }\n");
}
}
int eventCount = bed.eventTargets.size();
if (eventCount > 0) {
result.append(" flags &= ~(" + bed.flagType + ") 0 << " + eventCount + ";\n");
}
// Finalize variables
if (bed.lastT) {
result.append(" lastT = simulator.currentEvent.t;\n");
}
for (Variable v : bed.localBufferedExternal) {
if (v == bed.dt) {
result.append(" if (" + mangle("next_", v) + " != event->dt) setPeriod (" + mangle("next_", v) + ");\n");
} else {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
}
for (Variable v : bed.localBufferedExternalWrite) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
if (bed.type != null) {
result.append(" switch (" + mangle("$type") + ")\n");
result.append(" {\n");
// Each "split" is one particular set of new parts to transform into.
// Each combination requires a separate piece of code. Thus, the outer
// structure here is a switch statement. Each case within the switch implements
// a particular combination of new parts. At this point, $type merely indicates
// which combination to process. Afterward, it will be set to an index within that
// combination, per the N2A language document.
int countSplits = s.splits.size();
for (int i = 0; i < countSplits; i++) {
ArrayList<EquationSet> split = s.splits.get(i);
// Check if $type = me. Ignore this particular case, since it is a null operation
if (split.size() == 1 && split.get(0) == s) {
continue;
}
result.append(" case " + i + ":\n");
result.append(" {\n");
// indicates that this instance is one of the resulting parts
boolean used = false;
int countParts = split.size();
for (int j = 0; j < countParts; j++) {
EquationSet to = split.get(j);
if (to == s && !used) {
used = true;
result.append(" " + mangle("$type") + " = " + (j + 1) + ";\n");
} else {
String container = "container->";
if (bed.pathToContainer != null)
container = mangle(bed.pathToContainer) + "->" + container;
result.append(" " + container + mangle(s.name) + "_2_" + mangle(to.name) + " (this, " + (j + 1) + ");\n");
}
}
if (used) {
result.append(" break;\n");
} else {
result.append(" die ();\n");
result.append(" return false;\n");
}
result.append(" }\n");
}
result.append(" }\n");
}
// TODO: recognize when $p is contingent on $connect (formerly !$live) and don't emit those equations
if (s.lethalP) {
// lethalP implies that $p exists, so no need to check for null
if (bed.p.hasAttribute("temporary")) {
multiconditional(bed.p, context, " ");
}
if (bed.p.hasAttribute("constant")) {
double pvalue = ((Scalar) ((Constant) bed.p.equations.first().expression).value).value;
if (pvalue != 0)
result.append(" if (" + resolve(bed.p.reference, context, false) + " < uniform ())\n");
} else {
result.append(" if (" + mangle("$p") + " == 0 || " + mangle("$p") + " < 1 && " + mangle("$p") + " < uniform ())\n");
}
result.append(" {\n");
result.append(" die ();\n");
result.append(" return false;\n");
result.append(" }\n");
}
if (s.lethalConnection) {
for (ConnectionBinding c : s.connectionBindings) {
VariableReference r = s.resolveReference(c.alias + ".$live");
if (!r.variable.hasAttribute("constant")) {
result.append(" if (" + resolve(r, context, false, "", true) + " == 0)\n");
result.append(" {\n");
result.append(" die ();\n");
result.append(" return false;\n");
result.append(" }\n");
}
}
}
if (s.lethalContainer) {
VariableReference r = s.resolveReference("$up.$live");
if (!r.variable.hasAttribute("constant")) {
result.append(" if (" + resolve(r, context, false, "", true) + " == 0)\n");
result.append(" {\n");
result.append(" die ();\n");
result.append(" return false;\n");
result.append(" }\n");
}
}
result.append(" return true;\n");
context.hasEvent = false;
result.append("}\n");
result.append("\n");
}
// Unit updateDerivative
if (bed.localDerivativeUpdate.size() > 0 || s.parts.size() > 0) {
result.append("void " + ns + "updateDerivative ()\n");
result.append("{\n");
for (Variable v : bed.localBufferedInternalDerivative) {
result.append(" " + type(v) + " " + mangle("next_", v) + ";\n");
}
for (Variable v : bed.localDerivativeUpdate) {
multiconditional(v, context, " ");
}
for (Variable v : bed.localBufferedInternalDerivative) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
// contained populations
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".updateDerivative ();\n");
}
result.append("}\n");
result.append("\n");
}
// Unit finalizeDerivative
if (bed.localBufferedExternalDerivative.size() > 0 || s.parts.size() > 0) {
result.append("void " + ns + "finalizeDerivative ()\n");
result.append("{\n");
for (Variable v : bed.localBufferedExternalDerivative) {
result.append(" " + mangle(v) + " = " + mangle("next_", v) + ";\n");
}
for (Variable v : bed.localBufferedExternalWriteDerivative) {
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
// contained populations
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".finalizeDerivative ();\n");
}
result.append("}\n");
result.append("\n");
}
if (bed.needLocalPreserve || s.parts.size() > 0) {
// Unit snapshot
result.append("void " + ns + "snapshot ()\n");
result.append("{\n");
if (bed.needLocalPreserve) {
result.append(" preserve = new Preserve;\n");
for (Variable v : bed.localIntegrated) {
result.append(" preserve->" + mangle(v) + " = " + mangle(v) + ";\n");
}
for (Variable v : bed.localDerivativePreserve) {
result.append(" preserve->" + mangle(v) + " = " + mangle(v) + ";\n");
}
for (Variable v : bed.localBufferedExternalWriteDerivative) {
result.append(" preserve->" + mangle("next_", v) + " = " + mangle("next_", v) + ";\n");
result.append(" " + mangle("next_", v) + clearAccumulator(v, context) + ";\n");
}
}
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".snapshot ();\n");
}
result.append("}\n");
result.append("\n");
// Unit restore
result.append("void " + ns + "restore ()\n");
result.append("{\n");
if (bed.needLocalPreserve) {
for (Variable v : bed.localDerivativePreserve) {
result.append(" " + mangle(v) + " = preserve->" + mangle(v) + ";\n");
}
for (Variable v : bed.localBufferedExternalWriteDerivative) {
result.append(" " + mangle("next_", v) + " = preserve->" + mangle("next_", v) + ";\n");
}
result.append(" delete preserve;\n");
result.append(" preserve = 0;\n");
}
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".restore ();\n");
}
result.append("}\n");
result.append("\n");
}
if (bed.localDerivative.size() > 0 || s.parts.size() > 0) {
// Unit pushDerivative
result.append("void " + ns + "pushDerivative ()\n");
result.append("{\n");
if (bed.localDerivative.size() > 0) {
result.append(" Derivative * temp = new Derivative;\n");
result.append(" temp->next = stackDerivative;\n");
result.append(" stackDerivative = temp;\n");
for (Variable v : bed.localDerivative) {
result.append(" temp->" + mangle(v) + " = " + mangle(v) + ";\n");
}
}
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".pushDerivative ();\n");
}
result.append("}\n");
result.append("\n");
// Unit multiplyAddToStack
result.append("void " + ns + "multiplyAddToStack (float scalar)\n");
result.append("{\n");
for (Variable v : bed.localDerivative) {
result.append(" stackDerivative->" + mangle(v) + " += " + mangle(v) + " * scalar;\n");
}
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".multiplyAddToStack (scalar);\n");
}
result.append("}\n");
result.append("\n");
// Unit multiply
result.append("void " + ns + "multiply (float scalar)\n");
result.append("{\n");
for (Variable v : bed.localDerivative) {
result.append(" " + mangle(v) + " *= scalar;\n");
}
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".multiply (scalar);\n");
}
result.append("}\n");
result.append("\n");
// Unit addToMembers
result.append("void " + ns + "addToMembers ()\n");
result.append("{\n");
if (bed.localDerivative.size() > 0) {
for (Variable v : bed.localDerivative) {
result.append(" " + mangle(v) + " += stackDerivative->" + mangle(v) + ";\n");
}
result.append(" Derivative * temp = stackDerivative;\n");
result.append(" stackDerivative = stackDerivative->next;\n");
result.append(" delete temp;\n");
}
for (EquationSet e : s.parts) {
result.append(" " + mangle(e.name) + ".addToMembers ();\n");
}
result.append("}\n");
result.append("\n");
}
// Unit getLive
if (bed.live != null && !bed.live.hasAttribute("constant")) {
result.append("float " + ns + "getLive ()\n");
result.append("{\n");
if (// "accessor" indicates whether or not $value is actually stored
!bed.live.hasAttribute("accessor")) {
result.append(" if (" + resolve(bed.live.reference, context, false, "", true) + " == 0) return 0;\n");
}
if (s.lethalConnection) {
for (ConnectionBinding c : s.connectionBindings) {
VariableReference r = s.resolveReference(c.alias + ".$live");
if (!r.variable.hasAttribute("constant")) {
result.append(" if (" + resolve(r, context, false, "", true) + " == 0) return 0;\n");
}
}
}
if (s.lethalContainer) {
VariableReference r = s.resolveReference("$up.$live");
if (!r.variable.hasAttribute("constant")) {
result.append(" if (" + resolve(r, context, false, "", true) + " == 0) return 0;\n");
}
}
result.append(" return 1;\n");
result.append("}\n");
result.append("\n");
}
// Unit getP
if (s.connectionBindings != null) {
if (bed.p != null) {
result.append("float " + ns + "getP ()\n");
result.append("{\n");
s.setInit(1);
// set $live to 0
Set<String> liveAttributes = bed.live.attributes;
bed.live.attributes = null;
bed.live.addAttribute("constant");
// this should always be an equation we create; the user cannot declare $live (or $init for that matter)
EquationEntry e = bed.live.equations.first();
Scalar liveValue = (Scalar) ((Constant) e.expression).value;
liveValue.value = 0;
if (!bed.p.hasAttribute("constant")) {
// Generate any temporaries needed by $p
for (Variable t : s.variables) {
if (t.hasAttribute("temporary") && bed.p.dependsOn(t) != null) {
multiconditional(t, context, " ");
}
}
// $p is always calculated, because we are in a pseudo-init phase
multiconditional(bed.p, context, " ");
}
result.append(" return " + resolve(bed.p.reference, context, false) + ";\n");
// restore $live
bed.live.attributes = liveAttributes;
liveValue.value = 1;
s.setInit(0);
result.append("}\n");
result.append("\n");
}
}
// Unit getXYZ
if (// Connections can also have $xyz, but only compartments need to provide an accessor.
s.connectionBindings == null) {
Variable xyz = s.find(new Variable("$xyz", 0));
if (xyz != null) {
result.append("void " + ns + "getXYZ (Vector3 & xyz)\n");
result.append("{\n");
// If stored, then simply copy into the return value.
if (xyz.hasAttribute("temporary")) {
// Generate any temporaries needed by $xyz
for (Variable t : s.variables) {
if (t.hasAttribute("temporary") && xyz.dependsOn(t) != null) {
multiconditional(t, context, " ");
}
}
multiconditional(xyz, context, " ");
}
result.append(" xyz = " + resolve(xyz.reference, context, false) + ";\n");
result.append("}\n");
result.append("\n");
}
}
// Unit events
if (bed.eventTargets.size() > 0) {
result.append("bool " + ns + "eventTest (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (EventTarget et : bed.eventTargets) {
result.append(" case " + et.valueIndex + ":\n");
result.append(" {\n");
for (Variable v : et.dependencies) {
multiconditional(v, context, " ");
}
if (et.edge != EventTarget.NONZERO) {
result.append(" float before = " + resolve(et.track.reference, context, false) + ";\n");
}
if (// This is a single variable, so check its value directly.
et.trackOne) {
result.append(" float after = " + resolve(et.track.reference, context, true) + ";\n");
} else // This is an expression, so use our private auxiliary variable.
{
result.append(" float after = ");
et.event.operands[0].render(context);
result.append(";\n");
if (et.edge != EventTarget.NONZERO) {
result.append(" " + mangle(et.track) + " = after;\n");
}
}
switch(et.edge) {
case EventTarget.NONZERO:
if (et.timeIndex >= 0) {
// Guard against multiple events in a given cycle.
// Note that other trigger types don't need this because they set the auxiliary variable,
// so the next test in the same cycle will no longer see change.
result.append(" if (after == 0) return false;\n");
// Wrap time at 1 second, to fit in float precision.
result.append(" float moduloTime = (float) fmod (simulator.currentEvent->t, 1);\n");
result.append(" if (eventTime" + et.timeIndex + " == moduloTime) return false;\n");
result.append(" eventTime" + et.timeIndex + " = moduloTime;\n");
result.append(" return true;\n");
} else {
result.append(" return after != 0;\n");
}
break;
case EventTarget.CHANGE:
result.append(" return before != after;\n");
break;
case EventTarget.FALL:
result.append(" return before != 0 && after == 0;\n");
break;
case EventTarget.RISE:
default:
result.append(" return before == 0 && after != 0;\n");
}
result.append(" }\n");
}
result.append(" }\n");
result.append("}\n");
result.append("\n");
if (bed.needLocalEventDelay) {
result.append("float " + ns + "eventDelay (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (EventTarget et : bed.eventTargets) {
if (et.delay >= -1)
continue;
// Need to evaluate expression
result.append(" case " + et.valueIndex + ":\n");
result.append(" {\n");
for (Variable v : et.dependencies) {
multiconditional(v, context, " ");
}
result.append(" float result = ");
et.event.operands[1].render(context);
result.append(";\n");
result.append(" if (result < 0) return -1;\n");
result.append(" return result;\n");
result.append(" }\n");
}
result.append(" }\n");
result.append("}\n");
result.append("\n");
}
result.append("void " + ns + "setLatch (int i)\n");
result.append("{\n");
result.append(" flags |= (" + bed.flagType + ") 0x1 << i;\n");
result.append("}\n");
result.append("\n");
if (bed.eventReferences.size() > 0) {
result.append("void " + ns + "finalizeEvent ()\n");
result.append("{\n");
for (Variable v : bed.eventReferences) {
String current = resolve(v.reference, context, false);
String buffered = resolve(v.reference, context, true);
result.append(" " + current);
switch(v.assignment) {
case Variable.ADD:
result.append(" += " + buffered + ";\n");
result.append(" " + buffered + zero(v) + ";\n");
break;
case Variable.MULTIPLY:
case Variable.DIVIDE:
result.append(" *= " + buffered + ";\n");
result.append(" " + buffered + clear(v, 1, context) + ";\n");
break;
case Variable.MIN:
// TODO: Write elementwise min() and max() for matrices.
result.append(" = min (" + current + ", " + buffered + ");\n");
result.append(" " + buffered + clear(v, Double.POSITIVE_INFINITY, context) + ";\n");
break;
case Variable.MAX:
result.append(" = max (" + current + ", " + buffered + ");\n");
result.append(" " + buffered + clear(v, Double.NEGATIVE_INFINITY, context) + ";\n");
break;
default:
// REPLACE
result.append(" = " + buffered + ";\n");
break;
}
}
result.append("}\n");
result.append("\n");
}
}
// Unit project
if (bed.hasProjectFrom || bed.hasProjectTo) {
Variable xyz = s.find(new Variable("$xyz", 0));
boolean xyzStored = false;
boolean xyzTemporary = false;
if (xyz != null) {
xyzTemporary = xyz.hasAttribute("temporary");
xyzStored = !xyzTemporary;
}
result.append("void " + ns + "project (int i, int j, Vector3 & xyz)\n");
result.append("{\n");
String localXYZ = "xyz";
if (bed.hasProjectTo) {
localXYZ = "__24xyz";
// local temporary storage
if (!xyzStored)
result.append(" Vector3 " + mangle(xyz) + ";\n");
}
// TODO: Handle the case where $xyz is explicitly specified with an equation.
// This should override all instances of $projectFrom.
// Or should it merely be the default when $projectFrom is missing?
result.append(" switch (i)\n");
result.append(" {\n");
boolean needDefault = false;
for (ConnectionBinding c : s.connectionBindings) {
Variable projectFrom = s.find(new Variable(c.alias + ".$projectFrom"));
if (projectFrom == null) {
VariableReference fromXYZ = s.resolveReference(c.alias + ".$xyz");
if (fromXYZ.variable == null) {
needDefault = true;
} else {
result.append(" case " + c.index + ": " + localXYZ + " = " + resolve(fromXYZ, context, false) + "; break;\n");
}
} else {
result.append(" case " + c.index + ":\n");
result.append(" {\n");
if (// it could also be "constant", but no other type
projectFrom.hasAttribute("temporary")) {
for (Variable t : s.variables) {
if (t.hasAttribute("temporary") && projectFrom.dependsOn(t) != null) {
multiconditional(t, context, " ");
}
}
multiconditional(projectFrom, context, " ");
}
result.append(" " + localXYZ + " = " + resolve(projectFrom.reference, context, false) + ";\n");
result.append(" break;\n");
result.append(" }\n");
}
}
if (needDefault) {
result.append(" default:\n");
result.append(" " + localXYZ + "[0] = 0;\n");
result.append(" " + localXYZ + "[1] = 0;\n");
result.append(" " + localXYZ + "[2] = 0;\n");
}
result.append(" }\n");
result.append("\n");
if (xyzStored && !localXYZ.equals("__24xyz")) {
result.append(" __24xyz = " + localXYZ + ";\n");
}
if (bed.hasProjectTo) {
if (xyzTemporary)
xyz.removeAttribute("temporary");
result.append(" switch (j)\n");
result.append(" {\n");
needDefault = false;
for (ConnectionBinding c : s.connectionBindings) {
Variable projectTo = s.find(new Variable(c.alias + ".$projectTo"));
if (projectTo == null) {
needDefault = true;
} else {
result.append(" case " + c.index + ":\n");
result.append(" {\n");
if (projectTo.hasAttribute("temporary")) {
for (Variable t : s.variables) {
if (t.hasAttribute("temporary") && projectTo.dependsOn(t) != null) {
multiconditional(t, context, " ");
}
}
multiconditional(projectTo, context, " ");
}
result.append(" xyz = " + resolve(projectTo.reference, context, false) + ";\n");
result.append(" break;\n");
result.append(" }\n");
}
}
if (needDefault) {
result.append(" default:\n");
result.append(" xyz = __24xyz;\n");
}
result.append(" }\n");
if (xyzTemporary)
xyz.addAttribute("temporary");
}
result.append("}\n");
result.append("\n");
}
// Unit getCount
if (bed.accountableEndpoints.size() > 0) {
result.append("int " + ns + "getCount (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (ConnectionBinding c : s.connectionBindings) {
if (bed.accountableEndpoints.contains(c.alias)) {
result.append(" case " + c.index + ": return " + mangle(c.alias) + "->" + prefix(s) + "_" + mangle(c.alias) + "_count;\n");
}
}
result.append(" }\n");
result.append(" return 0;\n");
result.append("}\n");
result.append("\n");
}
// Unit setPart
if (s.connectionBindings != null) {
result.append("void " + ns + "setPart (int i, Part * part)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (ConnectionBinding c : s.connectionBindings) {
// TODO: This assumes that all the parts are children of the same container as the connection. Need to generalize so connections can cross branches of the containment hierarchy.
result.append(" case " + c.index + ": " + mangle(c.alias) + " = (" + prefix(c.endpoint) + " *) part; return;\n");
}
result.append(" }\n");
result.append("}\n");
result.append("\n");
}
// Unit getPart
if (s.connectionBindings != null) {
result.append("Part * " + ns + "getPart (int i)\n");
result.append("{\n");
result.append(" switch (i)\n");
result.append(" {\n");
for (ConnectionBinding c : s.connectionBindings) {
result.append(" case " + c.index + ": return " + mangle(c.alias) + ";\n");
}
result.append(" }\n");
result.append(" return 0;\n");
result.append("}\n");
result.append("\n");
}
if (bed.needLocalPath) {
result.append("void " + ns + "path (String & result)\n");
result.append("{\n");
if (s.connectionBindings == null) {
// We assume that result is passed in as the empty string.
if (s.container != null) {
if (// Will our container provide a non-empty path?
((BackendDataC) s.container.backendData).needLocalPath) {
result.append(" container->path (result);\n");
result.append(" result += \"." + s.name + "\";\n");
} else {
result.append(" result = \"" + s.name + "\";\n");
}
}
result.append(" result += __24index;\n");
} else {
boolean first = true;
for (ConnectionBinding c : s.connectionBindings) {
if (first) {
result.append(" " + mangle(c.alias) + ".path (result);\n");
result.append(" String temp;\n");
first = false;
} else {
result.append(" " + mangle(c.alias) + ".path (temp);\n");
result.append(" result += \"-\" + temp;\n");
}
}
}
result.append("}\n");
result.append("\n");
}
// Unit conversions
Set<Conversion> conversions = s.getConversions();
for (Conversion pair : conversions) {
EquationSet source = pair.from;
EquationSet dest = pair.to;
boolean connectionSource = source.connectionBindings != null;
boolean connectionDest = dest.connectionBindings != null;
if (connectionSource != connectionDest) {
Backend.err.get().println("Can't change $type between connection and non-connection.");
throw new Backend.AbortRun();
// Why not? Because a connection *must* know the instances it connects, while
// a compartment cannot know those instances. Thus, one can never be converted
// to the other.
}
// The "2" functions only have local meaning, so they are never virtual.
// Must do everything init() normally does, including increment $n.
// Parameters:
// from -- the source part
// visitor -- the one managing the source part
// $type -- The integer index, in the $type expression, of the current target part. The target part's $type field will be initialized with this number (and zeroed after one cycle).
result.append("void " + ns + mangle(source.name) + "_2_" + mangle(dest.name) + " (" + mangle(source.name) + " * from, int " + mangle("$type") + ")\n");
result.append("{\n");
result.append(" " + mangle(dest.name) + " * to = " + mangle(dest.name) + ".allocate ();\n");
if (connectionDest) {
// Match connection bindings
for (ConnectionBinding c : dest.connectionBindings) {
ConnectionBinding d = source.findConnection(c.alias);
if (d == null) {
Backend.err.get().println("Unfulfilled connection binding during $type change.");
throw new Backend.AbortRun();
}
result.append(" to->" + mangle(c.alias) + " = from->" + mangle(c.alias) + ";\n");
}
}
result.append(" to->enterSimulation ();\n");
result.append(" getEvent ()->enqueue (to);\n");
// sets all variables, so partially redundant with the following code ...
result.append(" to->init ();\n");
// TODO: Convert contained populations from matching populations in the source part?
// Match variables between the two sets.
// TODO: a match between variables should be marked as a dependency. This might change some "dummy" variables into stored values.
String[] forbiddenAttributes = new String[] { "global", "constant", "accessor", "reference", "temporary", "dummy", "preexistent" };
for (Variable v : dest.variables) {
if (v.name.equals("$type")) {
// initialize new part with its position in the $type split
result.append(" to->" + mangle(v) + " = " + mangle("$type") + ";\n");
continue;
}
if (v.hasAny(forbiddenAttributes)) {
continue;
}
Variable v2 = source.find(v);
if (v2 != null && v2.equals(v)) {
result.append(" to->" + mangle(v) + " = " + resolve(v2.reference, context, false, "from->", false) + ";\n");
}
}
result.append("}\n");
result.append("\n");
}
}
Also used :
EquationSet(gov.sandia.n2a.eqset.EquationSet)
Variable(gov.sandia.n2a.eqset.Variable)
AccessVariable(gov.sandia.n2a.language.AccessVariable)
VariableReference(gov.sandia.n2a.eqset.VariableReference)
ConnectionBinding(gov.sandia.n2a.eqset.EquationSet.ConnectionBinding)
Conversion(gov.sandia.n2a.eqset.EquationSet.Conversion)
AbortRun(gov.sandia.n2a.plugins.extpoints.Backend.AbortRun)
Scalar(gov.sandia.n2a.language.type.Scalar)
EventSource(gov.sandia.n2a.backend.internal.InternalBackendData.EventSource)
TreeSet(java.util.TreeSet)
EquationEntry(gov.sandia.n2a.eqset.EquationEntry)
EventTarget(gov.sandia.n2a.backend.internal.InternalBackendData.EventTarget)
Example 8 with EquationEntry
use of gov.sandia.n2a.eqset.EquationEntry in project n2a by frothga.
the class JobC method multiconditional.
public void multiconditional(Variable v, CRenderer context, String pad) throws Exception {
boolean init = context.part.getInit();
boolean isType = v.name.equals("$type");
if (v.hasAttribute("temporary"))
context.result.append(pad + type(v) + " " + mangle(v) + ";\n");
// Select the default equation
EquationEntry defaultEquation = null;
for (EquationEntry e : v.equations) {
if (// TODO: also handle $init==1, or any other equivalent expression
init && e.ifString.equals("$init")) {
defaultEquation = e;
break;
}
if (e.ifString.length() == 0)
defaultEquation = e;
}
// Initialize static objects, and dump dynamic objects needed by conditions
for (EquationEntry e : v.equations) {
if (init) {
prepareStaticObjects(e.expression, context, pad);
if (e.condition != null)
prepareStaticObjects(e.condition, context, pad);
}
if (e.condition != null)
prepareDynamicObjects(e.condition, context, init, pad);
}
// Write the conditional equations
boolean haveIf = false;
String padIf = pad;
for (EquationEntry e : v.equations) {
if (e == defaultEquation)
continue;
if (init) {
if (e.ifString.length() == 0)
continue;
} else // not init
{
if (e.ifString.equals("$init"))
continue;
}
if (e.condition != null) {
String ifString;
if (haveIf) {
ifString = "elseif (";
} else {
ifString = "if (";
haveIf = true;
padIf = pad + " ";
}
context.result.append(pad + ifString);
e.condition.render(context);
context.result.append(")\n");
context.result.append(pad + "{\n");
}
if (isType) {
// per the N2A language document.
if (!(e.expression instanceof Split)) {
Backend.err.get().println("Unexpected expression for $type");
throw new Backend.AbortRun();
}
int index = context.part.splits.indexOf(((Split) e.expression).parts);
context.result.append(padIf + resolve(v.reference, context, true) + " = " + (index + 1) + ";\n");
} else {
prepareDynamicObjects(e.expression, context, init, pad);
context.result.append(padIf);
renderEquation(context, e);
}
if (haveIf)
context.result.append(pad + "}\n");
}
// Write the default equation
if (defaultEquation == null) {
if (isType) {
if (haveIf) {
context.result.append(pad + "else\n");
context.result.append(pad + "{\n");
}
// always reset $type to 0
context.result.append(padIf + resolve(v.reference, context, true) + " = 0;\n");
if (haveIf)
context.result.append(pad + "}\n");
} else {
// to copy forward the current buffered value.
if (v.assignment == Variable.REPLACE && v.reference.variable == v && v.equations.size() > 0 && v.hasAny("cycle", "externalRead") && !v.hasAttribute("initOnly")) {
if (haveIf) {
context.result.append(pad + "else\n");
context.result.append(pad + "{\n");
}
// copy previous value
context.result.append(padIf + resolve(v.reference, context, true) + " = " + resolve(v.reference, context, false) + ";\n");
if (haveIf)
context.result.append(pad + "}\n");
}
}
} else {
if (haveIf) {
context.result.append(pad + "else\n");
context.result.append(pad + "{\n");
}
if (isType) {
ArrayList<EquationSet> split = ((Split) defaultEquation.expression).parts;
int index = context.part.splits.indexOf(split);
context.result.append(padIf + resolve(v.reference, context, true) + " = " + (index + 1) + ";\n");
} else {
prepareDynamicObjects(defaultEquation.expression, context, init, pad);
context.result.append(padIf);
renderEquation(context, defaultEquation);
}
if (haveIf)
context.result.append(pad + "}\n");
}
}
Also used :
EquationSet(gov.sandia.n2a.eqset.EquationSet)
EquationEntry(gov.sandia.n2a.eqset.EquationEntry)
Split(gov.sandia.n2a.language.Split)
AbortRun(gov.sandia.n2a.plugins.extpoints.Backend.AbortRun)
Aggregations
EquationEntry (gov.sandia.n2a.eqset.EquationEntry)8
Variable (gov.sandia.n2a.eqset.Variable)6
AccessVariable (gov.sandia.n2a.language.AccessVariable)3
Scalar (gov.sandia.n2a.language.type.Scalar)3
EventTarget (gov.sandia.n2a.backend.internal.InternalBackendData.EventTarget)2
Symbol (gov.sandia.n2a.backend.xyce.netlist.Symbol)2
EquationSet (gov.sandia.n2a.eqset.EquationSet)2
ConnectionBinding (gov.sandia.n2a.eqset.EquationSet.ConnectionBinding)2
Operator (gov.sandia.n2a.language.Operator)2
Visitor (gov.sandia.n2a.language.Visitor)2
AbortRun (gov.sandia.n2a.plugins.extpoints.Backend.AbortRun)2
InstanceTemporaries (gov.sandia.n2a.backend.internal.InstanceTemporaries)1
EventSource (gov.sandia.n2a.backend.internal.InternalBackendData.EventSource)1
Population (gov.sandia.n2a.backend.internal.Population)1
Device (gov.sandia.n2a.backend.xyce.netlist.Device)1
SymbolConstantIC (gov.sandia.n2a.backend.xyce.netlist.SymbolConstantIC)1
SymbolFunc (gov.sandia.n2a.backend.xyce.netlist.SymbolFunc)1
SymbolPulse (gov.sandia.n2a.backend.xyce.netlist.SymbolPulse)1
SymbolSinewave (gov.sandia.n2a.backend.xyce.netlist.SymbolSinewave)1
SymbolStateVar0 (gov.sandia.n2a.backend.xyce.netlist.SymbolStateVar0)1
