/// <summary>
/// Finds a token according to the following rules:
/// 1) If position matches the End of the node/s FullSpan and the node is CompilationUnit,
/// then EoF is returned.
///
/// 2) If node.FullSpan.Contains(position) then the token that contains given position is
/// returned.
///
/// 3) Otherwise an ArgumentOutOfRangeException is thrown
/// </summary>
internal SyntaxToken FindTokenIncludingCrefAndNameAttributes(int position)
{
SyntaxToken nonTriviaToken = this.FindToken(position, findInsideTrivia: false);
SyntaxTrivia trivia = GetTriviaFromSyntaxToken(position, nonTriviaToken);
if (!SyntaxFacts.IsDocumentationCommentTrivia(trivia.Kind()))
{
return(nonTriviaToken);
}
Debug.Assert(trivia.HasStructure);
SyntaxToken triviaToken = ((CSharpSyntaxNode)trivia.GetStructure()).FindTokenInternal(position);
// CONSIDER: We might want to use the trivia token anywhere within a doc comment.
// Otherwise, we'll fall back on the enclosing scope outside of name and cref
// attribute values.
CSharpSyntaxNode curr = (CSharpSyntaxNode)triviaToken.Parent;
while (curr != null)
{
// Don't return a trivia token unless we're in the scope of a cref or name attribute.
if (curr.Kind() == SyntaxKind.XmlCrefAttribute || curr.Kind() == SyntaxKind.XmlNameAttribute)
{
return(LookupPosition.IsInXmlAttributeValue(position, (XmlAttributeSyntax)curr)
? triviaToken
: nonTriviaToken);
}
curr = curr.Parent;
}
return(nonTriviaToken);
}
public override void VisitTrivia(SyntaxTrivia trivia)
{
_cancellationToken.ThrowIfCancellationRequested();
if (IsSyntacticallyFilteredOut(trivia.FullSpan))
{
return;
}
if (!_isValidLocation && SyntaxFacts.IsDocumentationCommentTrivia(trivia.Kind()))
{
int start = trivia.Position; // FullSpan start to include /** or ///
const int length = 1; //Match dev11: span is just one character
_diagnostics.Add(ErrorCode.WRN_UnprocessedXMLComment, new SourceLocation(trivia.SyntaxTree, new TextSpan(start, length)));
}
base.VisitTrivia(trivia);
}
