private async Task ExtendModelWithRelatedNodesRecursiveAsync(
IRoslynModelNode roslynModelNode,
DirectedModelRelationshipType?directedModelRelationshipType,
CancellationToken cancellationToken,
IIncrementalProgress progress,
bool recursive,
HashSet <ModelNodeId> alreadyDiscoveredNodes)
{
var relatedSymbolPairs = await roslynModelNode.FindRelatedSymbolsAsync(_roslynModelProvider, directedModelRelationshipType);
var presentableRelatedSymbolPairs = relatedSymbolPairs
.Select(GetOriginalDefinition)
.Where(i => !IsHidden(i.RelatedSymbol))
.ToList();
foreach (var relatedSymbolPair in presentableRelatedSymbolPairs)
{
cancellationToken.ThrowIfCancellationRequested();
var relatedSymbol = relatedSymbolPair.RelatedSymbol;
var relatedNode = GetOrAddNode(relatedSymbol, progress);
AddRelationshipIfNotExists(relatedSymbolPair);
if (!recursive)
{
continue;
}
// Avoid infinite loop by stopping recursion when a node is already added.
if (alreadyDiscoveredNodes.Contains(relatedNode.Id))
{
continue;
}
alreadyDiscoveredNodes.Add(relatedNode.Id);
await ExtendModelWithRelatedNodesRecursiveAsync(
relatedNode,
directedModelRelationshipType,
cancellationToken,
progress,
true,
alreadyDiscoveredNodes);
}
}
