private Diagnostic?AnalyzeNamespace(CodeStyleOption2 <NamespaceDeclarationPreference> option, FileScopedNamespaceDeclarationSyntax declaration)
{
if (!ConvertNamespaceAnalysis.CanOfferUseBlockScoped(option, declaration, forAnalyzer: true))
{
return(null);
}
// if the diagnostic is hidden, show it anywhere from the `namespace` keyword through the name.
// otherwise, if it's not hidden, just squiggle the name.
var severity = option.Notification.Severity;
var diagnosticLocation = severity.WithDefaultSeverity(DiagnosticSeverity.Hidden) != ReportDiagnostic.Hidden
? declaration.Name.GetLocation()
: declaration.SyntaxTree.GetLocation(TextSpan.FromBounds(declaration.SpanStart, declaration.SemicolonToken.Span.End));
return(DiagnosticHelper.Create(
this.Descriptor,
diagnosticLocation,
severity,
ImmutableArray.Create(declaration.GetLocation()),
ImmutableDictionary <string, string?> .Empty));
}