/// <summary>
/// Dequeues all lines whose content has changed and extracts the code fragments overlapping with those lines that need to be reprocessed.
/// Does nothing if no lines have been modified.
/// Recomputes and pushes the syntax diagnostics for the extracted fragments and all end-of-file diagnostics otherwise.
/// Processes the extracted fragment and inserts the processed fragments into the corresponding data structure
/// Throws an ArgumentNullException if file is null.
/// </summary>
internal static void UpdateLanguageProcessing(this FileContentManager file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
file.SyncRoot.EnterUpgradeableReadLock();
try
{
var changedLines = file.DequeueContentChanges();
if (!changedLines.Any())
{
return;
}
var reprocess = QsCompilerError.RaiseOnFailure(() => file.FragmentsToProcess(changedLines).ToList(), "processing the edited lines failed");
var diagnostics = reprocess.CheckForEmptyFragments(file.FileName.Value)
.Concat(ParseCode(ref reprocess, file.FileName.Value)).ToList();
QsCompilerError.RaiseOnFailure(() => file.TokensUpdate(reprocess), "the computed token update failed");
QsCompilerError.RaiseOnFailure(() => file.AddSyntaxDiagnostics(diagnostics), "updating the SyntaxDiagnostics failed");
}
finally { file.SyncRoot.ExitUpgradeableReadLock(); }
}