//public static IEnumerable<ReadOnlyGrandparent> SomeAlgorithm(IEnumerable<ReadOnlyGrandparent> input,
// Func<ReadOnlyGrandparent, string> parentSelector, Func<ReadOnlyParent, bool> parentSelector,
// Func<ReadOnlyParent, bool> removeParentSelector, ImmutableSupport support) {
// foreach (var p in input) {
// string markerToAdd = parentSelector(p);
// if (markerToAdd != null) {
// //p.Variable++;
// p.GetOrCreateMutable(support).Variable++;
// }
// if (parentSelector(p.Parent)) {
// p.Parent.GetOrCreateMutable(support).Variable++;
// }
// foreach (var c in p.Parentren.Where(c => parentSelector(c))) {
// c.GetOrCreateMutable(support).Variable++;
// }
// p.GetOrCreateMutable(support).Parentren.RemoveAll(c => removeParentSelector(c));
// }
//
// return input.Immutify<ReadOnlyGrandparent, ReadWriteGrandparent>(support);
//}
protected override ReadOnlyGrandparent Immutify(ReadWriteGrandparent mutable, ImmutableSupport support)
{
IGrandparent source = mutable ?? (IGrandparent)this;
int variable = source.Variable;
ReadOnlyParent parent = support.Immutify <ReadOnlyParent, ReadWriteParent>(Parent);
return(Equals(variable, Variable) && Equals(parent, Parent)
? this
: new ReadOnlyGrandparent(FixedName, variable, parent));
}
public void ParentWithNonchangingChild()
{
var p = new ReadOnlyParent("p", 1000, null, null, new ReadOnlyChild[0]);
var gp = new ReadOnlyGrandparent("g", 100, p);
var s = new ImmutableSupport();
p.GetOrCreateMutable(s).Variable = p.Variable;
ReadOnlyGrandparent gp2 = s.Immutify <ReadOnlyGrandparent, ReadWriteGrandparent>(gp);
Assert.AreSame(gp, gp2);
Assert.AreEqual(1000, p.Variable);
Assert.AreEqual(100, gp.Variable);
}
public ReadWriteGrandparent(string fixedName, int variable, ReadOnlyParent parent)
{
FixedName = fixedName;
Variable = variable;
Parent = parent;
}
