void Repository::stackBefore(const qReal::Id &id, const qReal::Id &child, const qReal::Id &sibling) {
if(!mObjects.contains(id)) {
throw Exception("Repository: Moving child " + child.toString() + " of nonexistent object " + id.toString());
}
if(!mObjects.contains(child)) {
throw Exception("Repository: Moving nonexistent child " + child.toString());
}
if(!mObjects.contains(sibling)) {
throw Exception("Repository: Stacking before nonexistent child " + sibling.toString());
}
mObjects[id]->stackBefore(child, sibling);
}
void PioneerStateMachineGenerator::visitFinal(const qReal::Id &id, const QList<LinkInfo> &links)
{
generatorBase::GotoControlFlowGenerator::visitFinal(id, links);
trace("Visiting final node: " + id.toString());
if (mErrorsOccured) {
return;
}
// Here we are going to add finishing end-of-handler node in case it is missing (for example, diagrams like
// "Initial Node" -> "Final Node" will not generate it automatically).
// It is a kind of hack because asynchronous handler shall be a first-class entity and a zone node.
auto nodes = mSemanticTreeManager->nodes(id);
for (auto node : nodes) {
if (!node) {
continue;
}
SimpleNode * const thisNode = static_cast<SimpleNode *>(node);
// Getting top level parent node for this node.
NonZoneNode *parent = mSemanticTreeManager->topLevelParent(thisNode);
// Searching for end-of-handler node.
SemanticNode * endOfHandler = findEndOfHandler(parent);
if (!endOfHandler) {
// If not found, create and add one.
endOfHandler = produceEndOfHandlerNode();
mSemanticTreeManager->addAfter(thisNode, endOfHandler);
}
}
}
void PioneerStateMachineGenerator::visitConditional(const qReal::Id &id, const QList<LinkInfo> &links)
{
Q_UNUSED(links)
trace("Visiting conditional node: " + id.toString());
if (mErrorsOccured) {
return;
}
if (not mVisitedNodes.contains(id)) {
++mConditionals;
}
const QPair<LinkInfo, LinkInfo> branches(ifBranchesFor(id));
const LinkInfo thenLink = branches.first;
const LinkInfo elseLink = branches.second;
const auto nodes = mSemanticTreeManager->nodes(id);
for (const auto node : nodes) {
IfNode * const thisNode = static_cast<IfNode *>(node);
mSemanticTreeManager->addToZone(thisNode->thenZone(), thenLink.target);
mSemanticTreeManager->addToZone(thisNode->elseZone(), elseLink.target);
mConditionZonesQueue.enqueue(std::make_tuple(thisNode, false, thisNode->thenZone(), thisNode->elseZone()));
mBranchAsyncMarkers[thisNode->thenZone()] = false;
mBranchAsyncMarkers[thisNode->elseZone()] = false;
if (!mSemanticTreeManager->isTopLevelNode(thisNode)) {
reportError(tr("Nested If's constructions is not allowed."));
return;
}
}
}
void PioneerStateMachineGenerator::visitRegular(const qReal::Id &id, const QList<LinkInfo> &links)
{
// Base class method checks for subprogram calls, which is irrelevant for now, but does not hurt and hopefully
// will be needed later.
ControlFlowGeneratorBase::visitRegular(id, links);
if (mErrorsOccured) {
return;
}
if (id.element() == "InitialNode") {
mLabeledNodes << links.first().target;
}
if (not mVisitedNodes.contains(id) && id.element() == "FiBlock") {
++mConditionalEnds;
}
trace("Visiting " + id.toString());
const qReal::Id target = links[0].target;
QList<NonZoneNode *> nodesWithThisId = mSemanticTreeManager->nodes(id);
for (auto thisNode : nodesWithThisId) {
if (thisNode) {
processNode(thisNode, target);
} else {
mErrorsOccured = true;
return;
}
}
if (mErrorsOccured) {
return;
}
// Generation of a node may lead to sudden appearance of new copies of a node (for example, if this node was in a
// branch of If statement that get copied when generating node, quite common in if-loop programs). So we need to
// process new clones as well.
auto updatedNodes = mSemanticTreeManager->nodes(id);
while (updatedNodes.size() != nodesWithThisId.size()) {
for (auto node : updatedNodes) {
if (!nodesWithThisId.contains(node)) {
processNode(node, target);
nodesWithThisId.append(node);
}
}
updatedNodes = mSemanticTreeManager->nodes(id);
}
doDeferredGotoGeneration(id, target);
}