private void SetScanResult([CanBeNull] NullCheckScanResult?scanResult)
{
if (scanResult != null)
{
ScanResult = scanResult;
}
}
private void AnalyzeBinaryOperator(OperationAnalysisContext context, [NotNull] NullCheckScanner scanner)
{
var binaryOperator = (IBinaryOperation)context.Operation;
NullCheckScanResult?scanResult = scanner.ScanBinaryOperator(binaryOperator);
ReportForScanResult(scanResult, context.ReportDiagnostic);
}
private void AnalyzeIsPattern(OperationAnalysisContext context, [NotNull] NullCheckScanner scanner)
{
var isPattern = (IIsPatternOperation)context.Operation;
NullCheckScanResult?scanResult = scanner.ScanIsPattern(isPattern);
ReportForScanResult(scanResult, context.ReportDiagnostic);
}
private void AnalyzePropertyReference(OperationAnalysisContext context, [NotNull] NullCheckScanner scanner)
{
var propertyReference = (IPropertyReferenceOperation)context.Operation;
NullCheckScanResult?scanResult = scanner.ScanPropertyReference(propertyReference);
ReportForScanResult(scanResult, context.ReportDiagnostic);
}
public override void VisitBinaryOperator([NotNull] IBinaryOperation operation)
{
NullCheckScanResult?scanResult = scanner.ScanBinaryOperator(operation);
SetScanResult(scanResult);
base.VisitBinaryOperator(operation);
}
public override void VisitIsPattern([NotNull] IIsPatternOperation operation)
{
NullCheckScanResult?scanResult = scanner.ScanIsPattern(operation);
SetScanResult(scanResult);
base.VisitIsPattern(operation);
}
public override void VisitPropertyReference([NotNull] IPropertyReferenceOperation operation)
{
NullCheckScanResult?scanResult = scanner.ScanPropertyReference(operation);
SetScanResult(scanResult);
base.VisitPropertyReference(operation);
}
private void ReportForScanResult([CanBeNull] NullCheckScanResult?scanResult,
[NotNull] Action <Diagnostic> reportDiagnostic)
{
if (scanResult != null)
{
IOperation operation = scanResult.Value.Target;
reportDiagnostic(Diagnostic.Create(Rule, operation.Syntax.GetLocation(), operation.Syntax.ToString(),
scanResult.Value.Operand == NullCheckOperand.IsNull ? "null" : "not-null", scanResult.Value.Method));
}
}
private static void AnalyzePropertyReference(OperationAnalysisContext context, [NotNull] NullCheckScanner scanner)
{
var propertyReference = (IPropertyReferenceOperation)context.Operation;
NullCheckScanResult?scanResult = scanner.ScanPropertyReference(propertyReference);
if (scanResult != null && scanResult.Value.Method == NullCheckMethod.NullableHasValueMethod)
{
if (propertyReference.Parent is IBinaryOperation binaryOperator &&
DoReportForNullableComparison(binaryOperator, scanner))
{
return;
}
context.ReportDiagnostic(Diagnostic.Create(NullableHasValueRule, propertyReference.Syntax.GetLocation()));
}
}