public static Task <Document> RefactorAsync(
Document document,
MemberDeclarationSyntax declaration,
TextSpan span,
CancellationToken cancellationToken)
{
MemberDeclarationSyntax newDeclaration = declaration;
ImmutableArray <string> comments;
SyntaxTriviaList leadingTrivia = declaration.GetLeadingTrivia();
if (leadingTrivia.Span.Contains(span))
{
comments = leadingTrivia
.Where(f => span.Contains(f.Span) && f.Kind() == SyntaxKind.SingleLineCommentTrivia)
.Select(f => _leadingSlashesRegex.Replace(f.ToString(), ""))
.ToImmutableArray();
TextSpan spanToRemove = TextSpan.FromBounds(span.Start, declaration.SpanStart);
newDeclaration = declaration.WithLeadingTrivia(leadingTrivia.Where(f => !spanToRemove.Contains(f.Span)));
}
else
{
SyntaxTrivia trivia = declaration.FindTrivia(span.Start);
Debug.Assert(trivia != default(SyntaxTrivia));
SyntaxToken token = trivia.Token;
SyntaxTriviaList trailingTrivia = token.TrailingTrivia;
Debug.Assert(trailingTrivia.Contains(trivia));
for (int i = 0; i < trailingTrivia.Count; i++)
{
if (trailingTrivia[i].Span == span)
{
comments = ImmutableArray.Create(_leadingSlashesRegex.Replace(trailingTrivia[i].ToString(), ""));
SyntaxToken newToken = token.WithTrailingTrivia(trailingTrivia.Skip(i + 1));
newDeclaration = newDeclaration.ReplaceToken(token, newToken);
break;
}
}
}
var settings = new DocumentationCommentGeneratorSettings(comments);
newDeclaration = newDeclaration.WithNewSingleLineDocumentationComment(settings);
return(document.ReplaceNodeAsync(declaration, newDeclaration, cancellationToken));
}
