public async Task <GraphBuilder> GetGraphAsync(Solution solution, IGraphContext context, CancellationToken cancellationToken)
{
var graphBuilder = await GraphBuilder.CreateForInputNodesAsync(solution, context.InputNodes, cancellationToken).ConfigureAwait(false);
var nodesToProcess = context.InputNodes;
for (var depth = 0; depth < context.LinkDepth; depth++)
{
// This is the list of nodes we created and will process
var newNodes = new HashSet <GraphNode>();
foreach (var node in nodesToProcess)
{
cancellationToken.ThrowIfCancellationRequested();
var symbol = graphBuilder.GetSymbol(node, cancellationToken);
if (symbol != null)
{
foreach (var newSymbol in SymbolContainment.GetContainedSymbols(symbol))
{
cancellationToken.ThrowIfCancellationRequested();
var newNode = await graphBuilder.AddNodeAsync(
newSymbol, relatedNode : node, cancellationToken).ConfigureAwait(false);
graphBuilder.AddLink(node, GraphCommonSchema.Contains, newNode, cancellationToken);
}
}
else if (node.HasCategory(CodeNodeCategories.File))
{
var document = graphBuilder.GetContextDocument(node, cancellationToken);
if (document != null)
{
foreach (var newSymbol in await SymbolContainment.GetContainedSymbolsAsync(document, cancellationToken).ConfigureAwait(false))
{
cancellationToken.ThrowIfCancellationRequested();
var newNode = await graphBuilder.AddNodeAsync(
newSymbol, relatedNode : node, cancellationToken).ConfigureAwait(false);
graphBuilder.AddLink(node, GraphCommonSchema.Contains, newNode, cancellationToken);
}
}
}
}
nodesToProcess = newNodes;
}
return(graphBuilder);
}
public async Task <GraphBuilder> GetGraphAsync(Solution solution, IGraphContext context, CancellationToken cancellationToken)
{
var graphBuilder = await GraphBuilder.CreateForInputNodesAsync(solution, context.InputNodes, cancellationToken).ConfigureAwait(false);
foreach (var node in context.InputNodes)
{
if (!cancellationToken.IsCancellationRequested)
{
var symbol = graphBuilder.GetSymbol(node);
if (symbol != null)
{
var containsChildren = SymbolContainment.GetContainedSymbols(symbol).Any();
graphBuilder.AddDeferredPropertySet(node, DgmlNodeProperties.ContainsChildren, containsChildren);
}
else if (node.HasCategory(CodeNodeCategories.File))
{
var document = graphBuilder.GetContextDocument(node);
if (document != null)
{
var childNodes = await SymbolContainment.GetContainedSyntaxNodesAsync(document, cancellationToken).ConfigureAwait(false);
graphBuilder.AddDeferredPropertySet(node, DgmlNodeProperties.ContainsChildren, childNodes.Any());
}
else
{
var uri = node.Id.GetNestedValueByName <Uri>(CodeGraphNodeIdName.File);
if (uri != null)
{
// Since a solution load is not yet completed, there is no document available to answer this query.
// The solution explorer presumes that if somebody doesn't answer for a file, they never will.
// See Providers\GraphContextAttachedCollectionSource.cs for more. Therefore we should answer by setting
// ContainsChildren property to either true or false, so any following updates will be tractable.
// We will set it to false since the solution explorer assumes the default for this query response is 'false'.
// Todo: we may need fallback to check if this node actually represents a C# or VB language
// even when its extension fails to say so. One option would be to call DTEWrapper.IsRegisteredForLangService,
// which may not be called here however since deadlock could happen.
// The Uri returned by `GetNestedValueByName()` above isn't necessarily absolute and the `OriginalString` is
// the only property that doesn't throw if the UriKind is relative, so `OriginalString` must be used instead
// of `AbsolutePath`.
var path = uri.OriginalString;
// Recorded in https://github.com/dotnet/roslyn/issues/27805, we
// have seen crashes because the URI in the graph node has the
// following form, including the quotes (which are invalid path
// characters):
// C:\path\to\"some path\App.config"
// So we avoid calling Path.GetExtension here. Alternatively, we
// could check for illegal path characters directly first, but then
// that check would actually happen twice because GetExtension will
// also perform the check.
if (path.EndsWith(".cs", StringComparison.OrdinalIgnoreCase) || path.EndsWith(".vb", StringComparison.OrdinalIgnoreCase))
{
graphBuilder.AddDeferredPropertySet(node, DgmlNodeProperties.ContainsChildren, false);
}
}
}
}
}
}
return(graphBuilder);
}
