private static T RemoveNode <T>(
T declaration,
Func <T, SyntaxList <MemberDeclarationSyntax> > getMembers,
int index,
SyntaxRemoveOptions removeOptions) where T : SyntaxNode
{
SyntaxList <MemberDeclarationSyntax> members = getMembers(declaration);
T newDeclaration = declaration.RemoveNode(members[index], removeOptions);
if (index == 0 &&
index < members.Count - 1)
{
members = getMembers(newDeclaration);
MemberDeclarationSyntax nextMember = members[index];
SyntaxTriviaList leadingTrivia = nextMember.GetLeadingTrivia();
SyntaxTrivia trivia = leadingTrivia.FirstOrDefault();
if (trivia.IsEndOfLineTrivia())
{
MemberDeclarationSyntax newNextMember = nextMember.WithLeadingTrivia(leadingTrivia.RemoveAt(0));
newDeclaration = newDeclaration.ReplaceNode(nextMember, newNextMember);
}
}
return(newDeclaration);
}
private static SyntaxNode RemoveNode(MemberDeclarationSyntax member)
{
MemberDeclarationListInfo memberList = SyntaxInfo.MemberDeclarationListInfo(member.Parent);
SyntaxList <MemberDeclarationSyntax> members = memberList.Members;
MemberDeclarationListInfo newMemberList = memberList.RemoveNode(member, SyntaxRemoveOptions.KeepUnbalancedDirectives);
int index = members.IndexOf(member);
if (index == 0 &&
index < members.Count - 1)
{
MemberDeclarationSyntax nextMember = newMemberList[index];
SyntaxTriviaList leadingTrivia = nextMember.GetLeadingTrivia();
if (leadingTrivia.FirstOrDefault().IsEndOfLineTrivia())
{
MemberDeclarationSyntax newNextMember = nextMember.WithLeadingTrivia(leadingTrivia.RemoveAt(0));
newMemberList = newMemberList.ReplaceNode(nextMember, newNextMember);
}
}
return(newMemberList.Parent);
}
/// <summary>
///Method to extract the Summary from the XML Documentation of a Property inside the SyntaxTree.
///To get the summary every Property must have an XML-Documentation of the form: <summary></summary>
/// </summary>
private string GetXMLSummary(SyntaxTriviaList trivias)
{
//Get XML-Trivia from Node
var xmlCommentTrivia = trivias.FirstOrDefault(t => t.Kind() == SyntaxKind.SingleLineDocumentationCommentTrivia);
var xml = xmlCommentTrivia.GetStructure();
if (xml == null)
{
return("");
}
string xmlString = xml.ToString();
//Get summary from XML-String
var xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xmlString);
XmlNodeList xnList = xmlDoc.DocumentElement.SelectNodes("/summary");
string summary = xnList.Item(0).InnerText;
//Edit Summary-String
summary = summary.Replace("///", "");
summary = summary.Trim();
return(summary);
}
private async Task <Document> CreateChangedDocumentAsync(CodeFixContext context, DocumentationCommentTriviaSyntax documentationCommentTriviaSyntax, CancellationToken cancellationToken)
{
StringBuilder leadingTriviaBuilder = new StringBuilder();
SyntaxToken parentToken = documentationCommentTriviaSyntax.ParentTrivia.Token;
int documentationCommentIndex = parentToken.LeadingTrivia.IndexOf(documentationCommentTriviaSyntax.ParentTrivia);
for (int i = 0; i < documentationCommentIndex; i++)
{
SyntaxTrivia trivia = parentToken.LeadingTrivia[i];
switch (trivia.Kind())
{
case SyntaxKind.EndOfLineTrivia:
leadingTriviaBuilder.Clear();
break;
case SyntaxKind.WhitespaceTrivia:
leadingTriviaBuilder.Append(trivia.ToFullString());
break;
default:
break;
}
}
leadingTriviaBuilder.Append(documentationCommentTriviaSyntax.GetLeadingTrivia().ToFullString());
// this is the trivia that should appear at the beginning of each line of the comment.
SyntaxTrivia leadingTrivia = SyntaxFactory.DocumentationCommentExterior(leadingTriviaBuilder.ToString());
string newLineText = context.Document.Project.Solution.Workspace.Options.GetOption(FormattingOptions.NewLine, LanguageNames.CSharp);
var semanticModel = await context.Document.GetSemanticModelAsync(context.CancellationToken);
var documentedSymbol = semanticModel.GetDeclaredSymbol(parentToken.Parent.FirstAncestorOrSelf <SyntaxNode>(SyntaxNodeExtensionsEx.IsSymbolDeclaration), context.CancellationToken);
DocumentationCommentTriviaSyntax contentsOnly = RemoveExteriorTrivia(documentationCommentTriviaSyntax);
contentsOnly = contentsOnly.ReplaceNodes(contentsOnly.ChildNodes(), (originalNode, rewrittenNode) => RenderBlockElementAsMarkdown(originalNode, rewrittenNode, newLineText, documentedSymbol));
string renderedContent = contentsOnly.Content.ToFullString();
string[] lines = renderedContent.Split(new[] { "\r\n", "\n" }, StringSplitOptions.None);
SyntaxList <XmlNodeSyntax> newContent = XmlSyntaxFactory.List();
for (int i = 0; i < lines.Length; i++)
{
string line = lines[i];
if (string.IsNullOrWhiteSpace(line))
{
if (i == lines.Length - 1)
{
break;
}
line = string.Empty;
}
if (newContent.Count > 0)
{
newContent = newContent.Add(XmlSyntaxFactory.NewLine(newLineText).WithTrailingTrivia(SyntaxFactory.DocumentationCommentExterior("///")));
}
newContent = newContent.Add(XmlSyntaxFactory.Text(line.TrimEnd(), xmlEscape: false));
}
contentsOnly = contentsOnly.WithContent(newContent);
contentsOnly =
contentsOnly
.ReplaceExteriorTrivia(leadingTrivia)
.WithLeadingTrivia(SyntaxFactory.DocumentationCommentExterior("///"))
.WithTrailingTrivia(SyntaxFactory.EndOfLine(Environment.NewLine));
string fullContent = contentsOnly.ToFullString();
SyntaxTriviaList parsedTrivia = SyntaxFactory.ParseLeadingTrivia(fullContent);
SyntaxTrivia documentationTrivia = parsedTrivia.FirstOrDefault(i => i.IsKind(SyntaxKind.SingleLineDocumentationCommentTrivia));
contentsOnly = documentationTrivia.GetStructure() as DocumentationCommentTriviaSyntax;
if (contentsOnly == null)
{
return(context.Document);
}
// Remove unnecessary nested paragraph elements
contentsOnly = contentsOnly.ReplaceNodes(contentsOnly.DescendantNodes().OfType <XmlElementSyntax>(), MarkUnnecessaryParagraphs);
contentsOnly = contentsOnly.ReplaceNodes(contentsOnly.DescendantNodes().OfType <XmlElementSyntax>(), RemoveUnnecessaryParagraphs);
SyntaxNode root = await context.Document.GetSyntaxRootAsync(cancellationToken);
SyntaxNode newRoot = root.ReplaceNode(documentationCommentTriviaSyntax, contentsOnly);
if (documentationCommentTriviaSyntax.IsEquivalentTo(contentsOnly))
{
return(context.Document);
}
if (documentationCommentTriviaSyntax.ToFullString().Equals(contentsOnly.ToFullString(), StringComparison.Ordinal))
{
return(context.Document);
}
return(context.Document.WithSyntaxRoot(newRoot));
}