private async Task <DocumentConditionalRegionInfo> GetConditionalRegionInfo(Document document, CancellationToken cancellationToken)
{
var chains = await GetConditionalRegionChains(document, cancellationToken);
var info = new DocumentConditionalRegionInfo(document, chains);
if (DocumentAnalyzed != null)
{
await DocumentAnalyzed(this, info, cancellationToken);
}
return(info);
}
public async Task <Document> RemoveUnnecessaryRegions(DocumentConditionalRegionInfo info, CancellationToken cancellationToken = default(CancellationToken))
{
if (info == null)
{
throw new ArgumentNullException("info");
}
var changes = CalculateTextChanges(info.Chains);
if (changes == null || changes.Count == 0)
{
return(info.Document);
}
var newText = await info.Document.GetTextAsync(cancellationToken);
try
{
newText = newText.WithChanges(changes);
}
catch (Exception)
{
var changesString = new StringBuilder();
var syntaxTree = info.Document.GetSyntaxTreeAsync(cancellationToken).Result;
foreach (var change in changes)
{
var lineSpan = Location.Create(syntaxTree, change.Span).GetLineSpan();
changesString.AppendFormat("({0}-{1}): {2}", lineSpan.StartLinePosition.Line, lineSpan.EndLinePosition.Line, newText.GetSubText(change.Span).ToString());
}
Logger.WriteErrorLine(string.Format("Failed to remove regions from document '{0}':{1}{2}", info.Document.FilePath, Environment.NewLine, changesString.ToString()));
return(info.Document);
}
return(info.Document.WithText(newText));
}