public static TLink CreateStack <TLink>(this ILinks <TLink> links, TLink stackMarker)
{
var stackPoint = links.CreatePoint();
var stack = links.Update(stackPoint, stackMarker, stackPoint);
return(stack);
}
public static TLink UpdateOrCreateOrGet <TLink>(this ILinks <TLink> links, TLink source, TLink target, TLink newSource, TLink newTarget)
{
var equalityComparer = EqualityComparer <TLink> .Default;
var link = links.SearchOrDefault(source, target);
if (equalityComparer.Equals(link, default))
{
return(links.CreateAndUpdate(newSource, newTarget));
}
if (equalityComparer.Equals(newSource, source) && equalityComparer.Equals(newTarget, target))
{
return(link);
}
return(links.Update(link, newSource, newTarget));
}
public static TLink Update <TLink>(this ILinks <TLink> links, params TLink[] restrictions)
{
if (restrictions.Length == 2)
{
return(links.MergeAndDelete(restrictions[0], restrictions[1]));
}
if (restrictions.Length == 4)
{
return(links.UpdateOrCreateOrGet(restrictions[0], restrictions[1], restrictions[2], restrictions[3]));
}
else
{
return(links.Update(new LinkAddress <TLink>(restrictions[0]), restrictions));
}
}
private static void TestNonexistentReferences(this ILinks <ulong> memoryAdapter)
{
var link = memoryAdapter.Create();
memoryAdapter.Update(link, ulong.MaxValue, ulong.MaxValue);
var resultLink = _constants.Null;
memoryAdapter.Each(foundLink =>
{
resultLink = foundLink[_constants.IndexPart];
return(_constants.Break);
}, _constants.Any, ulong.MaxValue, ulong.MaxValue);
Assert.True(resultLink == link);
Assert.True(memoryAdapter.Count(ulong.MaxValue) == 0);
memoryAdapter.Delete(link);
}
public static TLink Update <TLink>(this ILinks <TLink> links, TLink link, TLink newSource, TLink newTarget) => links.Update(new LinkAddress <TLink>(link), new Link <TLink>(link, newSource, newTarget));
public static TLink CreateAndUpdate <TLink>(this ILinks <TLink> links, TLink source, TLink target) => links.Update(links.Create(), source, target);
public static TLink CreatePoint <TLink>(this ILinks <TLink> links)
{
var link = links.Create();
return(links.Update(link, link, link));
}
public static void TestCRUDOperations<T>(this ILinks<T> links)
{
var constants = links.Constants;
var equalityComparer = EqualityComparer<T>.Default;
var zero = default(T);
var one = Arithmetic.Increment(zero);
// Create Link
Assert.True(equalityComparer.Equals(links.Count(), zero));
var setter = new Setter<T>(constants.Null);
links.Each(constants.Any, constants.Any, setter.SetAndReturnTrue);
Assert.True(equalityComparer.Equals(setter.Result, constants.Null));
var linkAddress = links.Create();
var link = new Link<T>(links.GetLink(linkAddress));
Assert.True(link.Count == 3);
Assert.True(equalityComparer.Equals(link.Index, linkAddress));
Assert.True(equalityComparer.Equals(link.Source, constants.Null));
Assert.True(equalityComparer.Equals(link.Target, constants.Null));
Assert.True(equalityComparer.Equals(links.Count(), one));
// Get first link
setter = new Setter<T>(constants.Null);
links.Each(constants.Any, constants.Any, setter.SetAndReturnFalse);
Assert.True(equalityComparer.Equals(setter.Result, linkAddress));
// Update link to reference itself
links.Update(linkAddress, linkAddress, linkAddress);
link = new Link<T>(links.GetLink(linkAddress));
Assert.True(equalityComparer.Equals(link.Source, linkAddress));
Assert.True(equalityComparer.Equals(link.Target, linkAddress));
// Update link to reference null (prepare for delete)
var updated = links.Update(linkAddress, constants.Null, constants.Null);
Assert.True(equalityComparer.Equals(updated, linkAddress));
link = new Link<T>(links.GetLink(linkAddress));
Assert.True(equalityComparer.Equals(link.Source, constants.Null));
Assert.True(equalityComparer.Equals(link.Target, constants.Null));
// Delete link
links.Delete(linkAddress);
Assert.True(equalityComparer.Equals(links.Count(), zero));
setter = new Setter<T>(constants.Null);
links.Each(constants.Any, constants.Any, setter.SetAndReturnTrue);
Assert.True(equalityComparer.Equals(setter.Result, constants.Null));
}
public static void TestRawNumbersCRUDOperations<T>(this ILinks<T> links)
{
// Constants
var constants = links.Constants;
var equalityComparer = EqualityComparer<T>.Default;
var zero = default(T);
var one = Arithmetic.Increment(zero);
var two = Arithmetic.Increment(one);
var h106E = new Hybrid<T>(106L, isExternal: true);
var h107E = new Hybrid<T>(-char.ConvertFromUtf32(107)[0]);
var h108E = new Hybrid<T>(-108L);
Assert.Equal(106L, h106E.AbsoluteValue);
Assert.Equal(107L, h107E.AbsoluteValue);
Assert.Equal(108L, h108E.AbsoluteValue);
// Create Link (External -> External)
var linkAddress1 = links.Create();
links.Update(linkAddress1, h106E, h108E);
var link1 = new Link<T>(links.GetLink(linkAddress1));
Assert.True(equalityComparer.Equals(link1.Source, h106E));
Assert.True(equalityComparer.Equals(link1.Target, h108E));
// Create Link (Internal -> External)
var linkAddress2 = links.Create();
links.Update(linkAddress2, linkAddress1, h108E);
var link2 = new Link<T>(links.GetLink(linkAddress2));
Assert.True(equalityComparer.Equals(link2.Source, linkAddress1));
Assert.True(equalityComparer.Equals(link2.Target, h108E));
// Create Link (Internal -> Internal)
var linkAddress3 = links.Create();
links.Update(linkAddress3, linkAddress1, linkAddress2);
var link3 = new Link<T>(links.GetLink(linkAddress3));
Assert.True(equalityComparer.Equals(link3.Source, linkAddress1));
Assert.True(equalityComparer.Equals(link3.Target, linkAddress2));
// Search for created link
var setter1 = new Setter<T>(constants.Null);
links.Each(h106E, h108E, setter1.SetAndReturnFalse);
Assert.True(equalityComparer.Equals(setter1.Result, linkAddress1));
// Search for nonexistent link
var setter2 = new Setter<T>(constants.Null);
links.Each(h106E, h107E, setter2.SetAndReturnFalse);
Assert.True(equalityComparer.Equals(setter2.Result, constants.Null));
// Update link to reference null (prepare for delete)
var updated = links.Update(linkAddress3, constants.Null, constants.Null);
Assert.True(equalityComparer.Equals(updated, linkAddress3));
link3 = new Link<T>(links.GetLink(linkAddress3));
Assert.True(equalityComparer.Equals(link3.Source, constants.Null));
Assert.True(equalityComparer.Equals(link3.Target, constants.Null));
// Delete link
links.Delete(linkAddress3);
Assert.True(equalityComparer.Equals(links.Count(), two));
var setter3 = new Setter<T>(constants.Null);
links.Each(constants.Any, constants.Any, setter3.SetAndReturnTrue);
Assert.True(equalityComparer.Equals(setter3.Result, linkAddress2));
}
