private static ITextBuffer GetTextBuffer(Workspace workspace, DocumentId documentId)
{
var doc = workspace.CurrentSolution.GetDocument(documentId);
if (doc == null)
{
// TODO (https://github.com/dotnet/roslyn/issues/1204): this check should be unnecessary.
log.Write($"GetTextBuffer: document not found for '{documentId?.GetDebuggerDisplay()}'");
return(null);
}
if (!doc.TryGetText(out var text))
{
// TODO: should not happen since the document is open (see bug 896058)
return(null);
}
var snapshot = text.FindCorrespondingEditorTextSnapshot();
if (snapshot == null)
{
return(null);
}
return(snapshot.TextBuffer);
}
protected static async Task<TextAndVersion> LoadTextAsync(TextLoader loader, DocumentId documentId, SolutionServices services, bool reportInvalidDataException, CancellationToken cancellationToken)
{
int retries = 0;
while (true)
{
try
{
using (ExceptionHelpers.SuppressFailFast())
{
var result = await loader.LoadTextAndVersionAsync(services.Workspace, documentId, cancellationToken).ConfigureAwait(continueOnCapturedContext: false);
return result;
}
}
catch (OperationCanceledException)
{
// if load text is failed due to a cancellation, make sure we propagate it out to the caller
throw;
}
catch (IOException e)
{
if (++retries > MaxRetries)
{
services.Workspace.OnWorkspaceFailed(new DocumentDiagnostic(WorkspaceDiagnosticKind.Failure, e.Message, documentId));
return TextAndVersion.Create(SourceText.From(string.Empty, Encoding.UTF8), VersionStamp.Default, documentId.GetDebuggerDisplay());
}
// fall out to try again
}
catch (InvalidDataException e)
{
// TODO: Adjust this behavior in the future if we add support for non-text additional files
if (reportInvalidDataException)
{
services.Workspace.OnWorkspaceFailed(new DocumentDiagnostic(WorkspaceDiagnosticKind.Failure, e.Message, documentId));
}
return TextAndVersion.Create(SourceText.From(string.Empty, Encoding.UTF8), VersionStamp.Default, documentId.GetDebuggerDisplay());
}
// try again after a delay
await Task.Delay(RetryDelay).ConfigureAwait(false);
}
}
private static async Task<TextAndVersion> LoadTextAsync(TextLoader loader, DocumentId documentId, SolutionServices services, CancellationToken cancellationToken)
{
try
{
using (ExceptionHelpers.SuppressFailFast())
{
var result = await loader.LoadTextAndVersionAsync(services.Workspace, documentId, cancellationToken).ConfigureAwait(continueOnCapturedContext: false);
return result;
}
}
catch (OperationCanceledException)
{
// if load text is failed due to a cancellation, make sure we propagate it out to the caller
throw;
}
catch (IOException e)
{
services.Workspace.OnWorkspaceFailed(new DocumentDiagnostic(WorkspaceDiagnosticKind.Failure, e.Message, documentId));
return TextAndVersion.Create(SourceText.From(string.Empty, Encoding.UTF8), VersionStamp.Default, documentId.GetDebuggerDisplay());
}
}
