private static XmlElementSyntax TrimWhitespaceContent(XmlElementSyntax paragraph, out SyntaxList <XmlNodeSyntax> leadingWhitespaceContent, out SyntaxList <XmlNodeSyntax> trailingWhitespaceContent) { SyntaxList <XmlNodeSyntax> completeContent = XmlSyntaxFactory.List(paragraph.Content.SelectMany(ExpandTextNodes).ToArray()); leadingWhitespaceContent = XmlSyntaxFactory.List(completeContent.TakeWhile(x => XmlCommentHelper.IsConsideredEmpty(x)).ToArray()); trailingWhitespaceContent = XmlSyntaxFactory.List(completeContent.Skip(leadingWhitespaceContent.Count).Reverse().TakeWhile(x => XmlCommentHelper.IsConsideredEmpty(x)).Reverse().ToArray()); SyntaxList <XmlNodeSyntax> trimmedContent = XmlSyntaxFactory.List(completeContent.Skip(leadingWhitespaceContent.Count).Take(completeContent.Count - leadingWhitespaceContent.Count - trailingWhitespaceContent.Count).ToArray()); SyntaxTriviaList leadingTrivia = SyntaxFactory.TriviaList(); SyntaxTriviaList trailingTrivia = SyntaxFactory.TriviaList(); if (trimmedContent.Any()) { leadingTrivia = trimmedContent[0].GetLeadingTrivia(); trailingTrivia = trimmedContent.Last().GetTrailingTrivia(); trimmedContent = trimmedContent.Replace(trimmedContent[0], trimmedContent[0].WithoutLeadingTrivia()); trimmedContent = trimmedContent.Replace(trimmedContent.Last(), trimmedContent.Last().WithoutTrailingTrivia()); } else { leadingTrivia = SyntaxFactory.TriviaList(); trailingTrivia = SyntaxFactory.TriviaList(); } XmlElementSyntax result = paragraph; if (leadingWhitespaceContent.Any()) { var first = leadingWhitespaceContent[0]; var newFirst = first.WithLeadingTrivia(first.GetLeadingTrivia().InsertRange(0, paragraph.GetLeadingTrivia())); leadingWhitespaceContent = leadingWhitespaceContent.Replace(first, newFirst); } else { leadingTrivia = leadingTrivia.InsertRange(0, result.GetLeadingTrivia()); } if (trailingWhitespaceContent.Any()) { var last = trailingWhitespaceContent.Last(); var newLast = last.WithLeadingTrivia(last.GetLeadingTrivia().AddRange(paragraph.GetTrailingTrivia())); trailingWhitespaceContent = trailingWhitespaceContent.Replace(last, newLast); } else { trailingTrivia = trailingTrivia.AddRange(result.GetTrailingTrivia()); } if (trimmedContent.FirstOrDefault() is XmlTextSyntax firstTextNode && firstTextNode.TextTokens.Any()) { SyntaxToken firstTextToken = firstTextNode.TextTokens[0]; string leadingWhitespace = new(firstTextToken.Text.Cast <char>().TakeWhile(char.IsWhiteSpace).ToArray()); if (leadingWhitespace.Length > 0) { SyntaxToken newFirstTextToken = XmlSyntaxFactory.TextLiteral(firstTextToken.Text.Substring(leadingWhitespace.Length)).WithTriviaFrom(firstTextToken); XmlTextSyntax newFirstTextNode = firstTextNode.WithTextTokens(firstTextNode.TextTokens.Replace(firstTextToken, newFirstTextToken)); trimmedContent = trimmedContent.Replace(firstTextNode, newFirstTextNode); leadingTrivia = leadingTrivia.Add(SyntaxFactory.Whitespace(leadingWhitespace)); } } if (trimmedContent.LastOrDefault() is XmlTextSyntax lastTextNode && lastTextNode.TextTokens.Any()) { SyntaxToken lastTextToken = lastTextNode.TextTokens.Last(); string trailingWhitespace = new(lastTextToken.Text.Cast <char>().Reverse().TakeWhile(char.IsWhiteSpace).Reverse().ToArray()); if (trailingWhitespace.Length > 0) { SyntaxToken newLastTextToken = XmlSyntaxFactory.TextLiteral(lastTextToken.Text.Substring(0, lastTextToken.Text.Length - trailingWhitespace.Length)).WithTriviaFrom(lastTextToken); XmlTextSyntax newLastTextNode = lastTextNode.WithTextTokens(lastTextNode.TextTokens.Replace(lastTextToken, newLastTextToken)); trimmedContent = trimmedContent.Replace(lastTextNode, newLastTextNode); trailingTrivia = trailingTrivia.Insert(0, SyntaxFactory.Whitespace(trailingWhitespace)); } } return(result.WithContent(trimmedContent) .WithLeadingTrivia(leadingTrivia) .WithTrailingTrivia(trailingTrivia)); }