private static Task <Document> RefactorAsync(
Document document,
XmlElementSyntax xmlElement,
CancellationToken cancellationToken)
{
SyntaxList <XmlNodeSyntax> nodes = xmlElement.Content;
(TextSpan span1, TextSpan span2, List <TextSpan> spans) = AddParagraphToDocumentationCommentAnalyzer.FindFixableSpan(nodes, stopOnFirstMatch: false, cancellationToken: cancellationToken);
var textChanges = new List <TextChange>();
string newLine = nodes
.OfType <XmlTextSyntax>()
.SelectMany(f => f.TextTokens)
.First(f => f.IsKind(SyntaxKind.XmlTextLiteralNewLineToken))
.ValueText;
string indentation = xmlElement.GetIndentation(cancellationToken).ToString();
string s = $"{newLine}{indentation}/// ";
int prevEnd = -1;
foreach (TextSpan span in spans)
{
cancellationToken.ThrowIfCancellationRequested();
if (prevEnd != -1)
{
textChanges.Add(new TextChange(TextSpan.FromBounds(prevEnd, span.Start), s));
}
SyntaxToken token = xmlElement.FindToken(span.Start);
SyntaxToken endToken = xmlElement.FindToken(span.End - 1);
bool isMultiline = xmlElement.SyntaxTree.IsMultiLineSpan(span, cancellationToken);
string text = "<para>";
if (isMultiline)
{
text += s;
}
int start = token.SpanStart;
int length = 0;
if (token.IsKind(SyntaxKind.XmlTextLiteralToken) &&
token.ValueText[0] == ' ')
{
if (prevEnd == -1)
{
start++;
}
else
{
length++;
}
}
textChanges.Add(new TextChange(new TextSpan(start, length), text));
text = "";
if (isMultiline)
{
text += s;
}
text += "</para>";
textChanges.Add(new TextChange(new TextSpan(span.End, 0), text));
prevEnd = endToken.Span.End;
}
cancellationToken.ThrowIfCancellationRequested();
return(document.WithTextChangesAsync(textChanges, cancellationToken));
}