// From https://github.com/KirillOsenkov/XmlParser/blob/master/src/Microsoft.Language.Xml.Editor/SmartIndent/SmartIndent.cs#L39
public static int FindTotalParentChainIndent(
SyntaxNodeBase node,
int position,
int indent,
int indentSize,
IIndentationService indentationService,
ISyntaxFactsService syntaxFactsService)
{
var textSpanOpt = syntaxFactsService.GetFileSpanRoot(node);
if (textSpanOpt == null)
{
return(indent);
}
var textSpan = textSpanOpt.Value;
if (!textSpan.IsInRootFile)
{
return(indent);
}
if (position < textSpan.Span.Start || position > textSpan.Span.End)
{
return(indent);
}
foreach (var child in node.ChildNodes)
{
var childSpan = syntaxFactsService.GetFileSpanRoot(child);
if (childSpan == null || !childSpan.Value.IsInRootFile)
{
continue;
}
var shouldIndent = indentationService.ShouldIndent(child);
if (shouldIndent)
{
indent += indentSize;
}
if (position <= childSpan.Value.Span.End)
{
return(FindTotalParentChainIndent(child, position, indent, indentSize, indentationService, syntaxFactsService));
}
if (shouldIndent)
{
indent -= indentSize;
}
}
return(indent);
}
