// Internal for testing
internal void OnDocumentStructureChanged(object state)
{
_dispatcher.AssertForegroundThread();
if (_disposed)
{
return;
}
var args = (DocumentStructureChangedEventArgs)state;
if (_latestChangeReference == null || // extra hardening
!_latestChangeReference.IsAssociatedWith(args) ||
args.Snapshot != TextBuffer.CurrentSnapshot)
{
// In the middle of parsing a newer change or about to parse a newer change.
return;
}
_latestChangeReference = null;
_codeDocument = args.CodeDocument;
_snapshot = args.Snapshot;
_partialParser = new RazorSyntaxTreePartialParser(CodeDocument.GetSyntaxTree());
DocumentStructureChanged?.Invoke(this, args);
}
// Internal for testing
internal void OnDocumentStructureChanged(object state)
{
_dispatcher.AssertForegroundThread();
if (_disposed)
{
return;
}
var backgroundParserArgs = (BackgroundParserResultsReadyEventArgs)state;
if (_latestChangeReference == null || // extra hardening
_latestChangeReference != backgroundParserArgs.ChangeReference ||
backgroundParserArgs.ChangeReference.Snapshot != TextBuffer.CurrentSnapshot)
{
// In the middle of parsing a newer change or about to parse a newer change.
return;
}
_latestChangeReference = null;
_codeDocument = backgroundParserArgs.CodeDocument;
_snapshot = backgroundParserArgs.ChangeReference.Snapshot;
_partialParser = new RazorSyntaxTreePartialParser(CodeDocument.GetSyntaxTree());
var documentStructureChangedArgs = new DocumentStructureChangedEventArgs(
backgroundParserArgs.ChangeReference.Change,
backgroundParserArgs.ChangeReference.Snapshot,
backgroundParserArgs.CodeDocument);
DocumentStructureChanged?.Invoke(this, documentStructureChangedArgs);
}
public ChangeReference QueueChange(SourceChange change, ITextSnapshot snapshot)
{
var changeReference = new ChangeReference(change, snapshot);
_main.QueueChange(changeReference);
return(changeReference);
}
private void QueueChange(SourceChange change, ITextSnapshot snapshot)
{
_dispatcher.AssertForegroundThread();
_latestChangeReference = new ChangeReference(change, snapshot);
_parser.QueueChange(change, snapshot);
}
private void QueueChange(SourceChange change, ITextSnapshot snapshot)
{
_joinableTaskContext.AssertUIThread();
// _parser can be null if we're in the midst of rebuilding the internal parser (TagHelper refresh/solution teardown)
_latestChangeReference = _parser?.QueueChange(change, snapshot);
}
private void QueueChange(SourceChange change, ITextSnapshot snapshot)
{
_dispatcher.AssertForegroundThread();
// _parser can be null if we're in the midst of rebuilding the internal parser (TagHelper refresh/solution teardown)
_latestChangeReference = _parser?.QueueChange(change, snapshot);
}
// Internal for testing
internal void OnDocumentStructureChanged(object state)
{
_dispatcher.AssertForegroundThread();
if (_disposed)
{
return;
}
var backgroundParserArgs = (BackgroundParserResultsReadyEventArgs)state;
if (_latestChangeReference == null || // extra hardening
_latestChangeReference != backgroundParserArgs.ChangeReference)
{
// In the middle of parsing a newer change or about to parse a newer change.
return;
}
if (backgroundParserArgs.ChangeReference.Snapshot != TextBuffer.CurrentSnapshot)
{
// Changes have impacted the snapshot after our we recorded our last change reference.
// This can happen for a multitude of reasons, usually because of a user auto-completing
// C# statements (causes multiple edits in quick succession). This ensures that our latest
// parse corresponds to the current snapshot.
QueueReparse();
return;
}
_latestChangeReference = null;
var documentStructureChangedArgs = new DocumentStructureChangedEventArgs(
backgroundParserArgs.ChangeReference.Change,
backgroundParserArgs.ChangeReference.Snapshot,
backgroundParserArgs.CodeDocument);
DocumentStructureChanged?.Invoke(this, documentStructureChangedArgs);
}
public void QueueChange(ChangeReference change)
{
// Any thread can queue a change.
lock (_stateLock)
{
// CurrentParcel token source is not null ==> There's a parse underway
if (_currentParcelCancelSource != null)
{
_currentParcelCancelSource.Cancel();
}
_changes.Add(change);
_hasParcel.Set();
}
}
public BackgroundParserResultsReadyEventArgs(ChangeReference edit, RazorCodeDocument codeDocument)
{
ChangeReference = edit;
CodeDocument = codeDocument;
}
