public static void Analyze(SyntaxNodeAnalysisContext context, RegionDirectiveTriviaSyntax region)
{
if (region.IsKind(SyntaxKind.RegionDirectiveTrivia))
{
List <DirectiveTriviaSyntax> relatedDirectives = region.GetRelatedDirectives();
if (relatedDirectives.Count == 2 &&
relatedDirectives[1].IsKind(SyntaxKind.EndRegionDirectiveTrivia))
{
DirectiveTriviaSyntax endRegion = relatedDirectives[1];
if (endRegion.IsKind(SyntaxKind.EndRegionDirectiveTrivia))
{
SyntaxTrivia trivia = region.ParentTrivia;
SyntaxTriviaList list = trivia.GetContainingList();
if (list.Any())
{
EndRegionDirectiveTriviaSyntax endRegion2 = FindEndRegion(list, list.IndexOf(trivia));
if (endRegion == endRegion2)
{
context.ReportDiagnostic(
DiagnosticDescriptors.RemoveEmptyRegion,
region.GetLocation(),
endRegion.GetLocation());
}
}
}
}
}
}
private static Task <Document> RefactorAsync(
Document document,
PragmaWarningDirectiveTriviaSyntax directive,
CancellationToken cancellationToken)
{
SyntaxTrivia trivia = directive.ParentTrivia;
SyntaxTriviaList list = trivia.GetContainingList();
int index = list.IndexOf(trivia);
int start = directive.EndOfDirectiveToken.SpanStart;
StringBuilder sb = StringBuilderCache.GetInstance();
int i = index + 1;
SyntaxKind disableOrRestoreKind = directive.DisableOrRestoreKeyword.Kind();
int end = start;
bool addComma = !directive.ErrorCodes.HasTrailingSeparator();
while (i < list.Count)
{
SyntaxTrivia trivia2 = list[i];
if (trivia2.IsWhitespaceOrEndOfLineTrivia())
{
i++;
continue;
}
if (trivia2.GetStructure() is PragmaWarningDirectiveTriviaSyntax directive2 &&
disableOrRestoreKind == directive2.DisableOrRestoreKeyword.Kind())
{
if (addComma)
{
sb.Append(",");
}
sb.Append(" ");
SeparatedSyntaxList <ExpressionSyntax> errorCodes = directive2.ErrorCodes;
sb.Append(errorCodes.ToString());
addComma = !errorCodes.HasTrailingSeparator();
end = directive2.ErrorCodes.Span.End;
}
i++;
}
return(document.WithTextChangeAsync(
TextSpan.FromBounds(start, end),
StringBuilderCache.GetStringAndFree(sb),
cancellationToken));
}
private void AnalyzeRegionDirectiveTrivia(SyntaxNodeAnalysisContext context)
{
if (GeneratedCodeAnalyzer?.IsGeneratedCode(context) == true)
{
return;
}
var region = (RegionDirectiveTriviaSyntax)context.Node;
if (region.IsKind(SyntaxKind.RegionDirectiveTrivia))
{
List <DirectiveTriviaSyntax> relatedDirectives = region.GetRelatedDirectives();
if (relatedDirectives.Count == 2 &&
relatedDirectives[1].IsKind(SyntaxKind.EndRegionDirectiveTrivia))
{
DirectiveTriviaSyntax endRegion = relatedDirectives[1];
if (endRegion.IsKind(SyntaxKind.EndRegionDirectiveTrivia))
{
SyntaxTrivia trivia = region.ParentTrivia;
SyntaxTriviaList list = trivia.GetContainingList();
if (list.Any())
{
EndRegionDirectiveTriviaSyntax endRegion2 = FindEndRegion(list, list.IndexOf(trivia));
if (endRegion == endRegion2)
{
context.ReportDiagnostic(
DiagnosticDescriptors.RemoveEmptyRegion,
region.GetLocation(),
endRegion.GetLocation());
}
}
}
}
}
}
