public static bool AddFoldingForBracedConstruct(
[NotNull] this IHighlightingConsumer context,
[CanBeNull] ITokenNode lbrace, [CanBeNull] ITokenNode rbrace, [CanBeNull] ITreeNode anchorToken = null,
string placeholder = "{...}")
{
if (lbrace == null || rbrace == null)
{
return(false);
}
var start = lbrace.GetDocumentStartOffset();
var end = rbrace.GetDocumentEndOffset();
var anchorOffset = anchorToken?.GetDocumentEndOffset().Offset ?? -1;
var document = start.Document;
var endDocument = end.Document;
if (document == null || end < start || document != endDocument)
{
return(false);
}
var foldingRange = new DocumentRange(start, end);
if (anchorOffset != -1 && anchorOffset < start.Offset)
{
var offset = document.FindLastNewLineOffset(anchorOffset, start.Offset);
foldingRange = foldingRange.SetStartTo(new DocumentOffset(document, offset));
}
if (!foldingRange.IsNotEmptyNormalized())
{
return(false);
}
if (foldingRange.CountNewLines() < 1)
{
return(false);
}
context.AddDefaultPriorityFolding("ReSharper Default Folding", foldingRange, placeholder);
return(true);
}