private static bool InCSharpLiteral(OmniSharpVSDiagnostic d, SourceText sourceText, RazorSyntaxTree syntaxTree)
{
if (d.Range is null)
{
return(false);
}
var owner = syntaxTree.GetOwner(sourceText, d.Range.End);
if (owner is null)
{
return(false);
}
var isCSharp = owner.Kind is SyntaxKind.CSharpExpressionLiteral or SyntaxKind.CSharpStatementLiteral or SyntaxKind.CSharpEphemeralTextLiteral;
return(isCSharp);
}
private static bool AppliesToTagHelperTagName(
OmniSharpVSDiagnostic diagnostic,
SourceText sourceText,
RazorSyntaxTree syntaxTree,
ILogger logger)
{
// Goal of this method is to filter diagnostics that touch TagHelper tag names. Reason being is TagHelpers can output anything. Meaning
// If you have a TagHelper like:
//
// <Input>
// </Input>
//
// HTML would see this as an error because the input element can't have a body; however, a TagHelper could respect this in a totally valid
// way.
if (diagnostic.Range is null)
{
return(false);
}
var owner = syntaxTree.GetOwner(sourceText, diagnostic.Range.End, logger);
var startOrEndTag = owner?.FirstAncestorOrSelf <RazorSyntaxNode>(n => n is MarkupTagHelperStartTagSyntax || n is MarkupTagHelperEndTagSyntax);
if (startOrEndTag is null)
{
return(false);
}
var tagName = startOrEndTag is MarkupTagHelperStartTagSyntax startTag ? startTag.Name : ((MarkupTagHelperEndTagSyntax)startOrEndTag).Name;
var tagNameRange = tagName.GetRange(syntaxTree.Source);
if (!tagNameRange.IntersectsOrTouches(diagnostic.Range))
{
// The diagnostic doesn't touch the tag name
return(false);
}
// Diagnostic is touching the start or end tag name range
return(true);
}