private void ReportIssue(ExpressionStatus status, Location location, string errorContext)
{
switch (status)
{
case ExpressionStatus.NotAssigned:
context.ReportDiagnostic(MainAnalyzer.CreateNullAssignmentError(location, errorContext));
break;
case ExpressionStatus.ReassignedAfterCondition:
context.ReportDiagnostic(MainAnalyzer.CreateAssignmentAfterCondition(location, errorContext));
break;
case ExpressionStatus.AssignedWithUnneededConstraint:
context.ReportDiagnostic(MainAnalyzer.CreateUnneededConstraint(location, errorContext));
break;
}
}
public override void VisitAssignmentExpression(AssignmentExpressionSyntax node)
{
base.VisitAssignmentExpression(node);
var valueType = node.Right.GetTypeOfValue(context.SemanticModel);
if (valueType == ValueType.NotNull)
{
return;
}
var target = node.Left.FindUnderlyingMember();
if (target == null)
{
return;
}
var symbol = context.SemanticModel.GetSymbolInfo(target).Symbol;
if (!symbol.HasNotNullOrCheckNull())
{
return;
}
switch (GetAssignmentStatus(node.Right, node, valueType))
{
case ExpressionStatus.NotAssigned:
context.ReportDiagnostic(MainAnalyzer.CreateNullAssignmentError(node.GetLocation(), symbol));
break;
case ExpressionStatus.ReassignedAfterCondition:
context.ReportDiagnostic(MainAnalyzer.CreateAssignmentAfterCondition(node.GetLocation(), node.ToString()));
break;
case ExpressionStatus.AssignedWithUnneededConstraint:
context.ReportDiagnostic(MainAnalyzer.CreateUnneededConstraint(node.GetLocation(), node.ToString()));
break;
}
}