private void ReportNoExceptionDiagnostics(SyntaxNodeAnalysisContext context, SyntaxNode node, DocumentationCommentTriviaSyntax xmlTrivia)
{
var exceptionCommentNames = xmlTrivia.DescendantNodes().OfType <XmlNameAttributeSyntax>()
.Where(attribute => IsNameAttribute(attribute, exceptionTag))
.Select(attribute => attribute.Identifier.ToString());
var exceptionTokens = GetExceptionTokens(node);
foreach (var exceptionToken in exceptionTokens)
{
var exceptionName = exceptionToken.Text;
if (!exceptionCommentNames.Any(commentName => commentName.Equals(exceptionName)))
{
context.ReportDiagnostic(Diagnostic.Create(NoExceptionRule, exceptionToken.GetLocation(), exceptionToken.Text));
}
}
}
private void ReportNoParamDiagnostics(SyntaxNodeAnalysisContext context, BaseMethodDeclarationSyntax node, DocumentationCommentTriviaSyntax xmlTrivia)
{
var paramCommentNames = xmlTrivia.DescendantNodes().OfType <XmlNameAttributeSyntax>()
.Where(attribute => IsNameAttribute(attribute, paramTag))
.Select(attribute => attribute.Identifier.ToString());
foreach (var parameter in node.ParameterList.Parameters)
{
var paramName = parameter.Identifier.Text;
if (HasThisModifier(parameter))
{
continue;
}
if (!paramCommentNames.Any(commentName => commentName.Equals(paramName)))
{
context.ReportDiagnostic(Diagnostic.Create(NoParamRule, parameter.Identifier.GetLocation(), parameter.Identifier.Text));
}
}
}
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));
}
private bool HasXmlNameTag(DocumentationCommentTriviaSyntax xmlTrivia, string name)
{
return(xmlTrivia.DescendantNodes().OfType <XmlElementStartTagSyntax>()
.Any(node => node.Name.ToString().Equals(name)));
}