private static BigInteger HashReference(IModelElement modelElement, IReference reference, Model containingModel, Func <IModelElement, Model, BigInteger> computeElementHash)
{
var hash = new BigInteger(GetDeterministicHashCode(reference.Name));
if (reference.UpperBound == 1)
{
var value = modelElement.GetReferencedElement(reference);
if (value != null)
{
hash += computeElementHash(value, containingModel);
}
}
else
{
var collection = modelElement.GetReferencedElements(reference);
if (collection != null)
{
var index = 0;
foreach (IModelElement item in collection)
{
hash += index + computeElementHash(item, containingModel);
if (reference.IsOrdered)
{
index++;
}
}
}
}
return(hash);
}
private void PerformChecksForModelElement(NMF.Models.Meta.IReference reference, IModelElement element, IModelElement other)
{
if (reference.IsContainment)
{
AssertAreEqual(element, other.Parent);
}
if (reference.Opposite != null)
{
if (reference.Opposite.UpperBound == 1)
{
AssertAreEqual(element, other.GetReferencedElement(reference.Opposite));
}
else
{
AssertIsTrue(other.GetReferencedElements(reference.Opposite).Cast <IModelElement>().Contains(element));
}
}
}
