private void HandleNonFlagEnumMember(SyntaxNodeAnalysisContext context, EnumDeclarationSyntax enumDeclaration)
{
using (var enumValuesSet = SetPool <ulong> .Create())
{
foreach (var enumMember in enumDeclaration.Members)
{
var symbol = context.SemanticModel.GetDeclaredSymbol(enumMember, context.CancellationToken);
bool notDerivedFromOther =
!IsDerivedFromOtherEnumMembers(enumMember, context.SemanticModel, context.CancellationToken);
var value = UnboxUMaxInt(symbol.ConstantValue);
if (notDerivedFromOther && enumValuesSet.Item.Contains(value))
{
context.ReportDiagnostic(Diagnostic.Create(Descriptor, enumMember.GetLocation()));
}
enumValuesSet.Item.Add(value).IgnoreReturnValue();
}
}
}
/// <summary>
/// Check if any path returns a created IDisposable
/// </summary>
internal static Result IsAssignedWithCreated(ExpressionSyntax disposable, SemanticModel semanticModel, CancellationToken cancellationToken, out ISymbol assignedSymbol)
{
if (!IsPotentiallyAssignableTo(disposable, semanticModel, cancellationToken))
{
assignedSymbol = null;
return(Result.No);
}
if (semanticModel.GetSymbolSafe(disposable, cancellationToken) is IPropertySymbol property &&
property.TryGetSetter(cancellationToken, out AccessorDeclarationSyntax setter))
{
using (var pooledSet = SetPool <ISymbol> .Create())
{
using (var pooledAssigned = Assignment.Create(setter, Search.Recursive, semanticModel, cancellationToken))
{
foreach (var assigned in pooledAssigned.Item.Assignments)
{
var symbol = semanticModel.GetSymbolSafe(assigned.Left, cancellationToken);
if (IsPotentiallyAssignableTo(assigned.Left, semanticModel, cancellationToken) &&
(symbol is IFieldSymbol ||
symbol is IPropertySymbol))
{
pooledSet.Item.Add(symbol).IgnoreReturnValue();
}
}
}
assignedSymbol = null;
var result = Result.No;
foreach (var symbol in pooledSet.Item)
{
switch (IsAssignedWithCreated(symbol, disposable, semanticModel, cancellationToken))
{
case Result.Unknown:
if (result == Result.No)
{
assignedSymbol = symbol;
result = Result.Unknown;
}
break;
case Result.Yes:
assignedSymbol = symbol;
return(Result.Yes);
case Result.No:
break;
case Result.Maybe:
assignedSymbol = symbol;
result = Result.Maybe;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
return(result);
}
}
using (var pooled = AssignedValueWalker.Create(disposable, semanticModel, cancellationToken))
{
using (var recursive = RecursiveValues.Create(pooled.Item, semanticModel, cancellationToken))
{
assignedSymbol = pooled.Item.CurrentSymbol;
return(IsAssignedWithCreated(recursive, semanticModel, cancellationToken));
}
}
}