public override bool VisitTypeParameter(ITypeParameterSymbol symbol)
{
if (symbol.HasReferenceTypeConstraint() && symbol.ReferenceTypeConstraintNullableAnnotation() == NullableAnnotation.None)
{
return(true);
}
foreach (var constraintType in symbol.ConstraintTypes)
{
if (Instance.Visit(constraintType))
{
return(true);
}
}
return(false);
}
private static bool CheckTypeParameterConstraints(ITypeParameterSymbol symbol)
{
if (symbol.HasReferenceTypeConstraint() &&
symbol.ReferenceTypeConstraintNullableAnnotation() == NullableAnnotation.None)
{
// where T : class~
return(true);
}
foreach (var constraintType in symbol.ConstraintTypes)
{
if (Instance.Visit(constraintType))
{
// Examples:
// where T : SomeReferenceType~
// where T : I<SomeReferenceType~>
return(true);
}
}
return(false);
}