public CustomSet <T> Except(CustomSet <T> other)
{
if (factory != other.factory)
{
throw new NotImplementedException();
}
if (other.set.Length == 0)
{
return(this);
}
if (other.set[0] > set[^ 1])
{
return(this);
}
if (other.set[^ 1] < set[0])
public static List <HashSet <IModContext <TMod, TModGetter, IMajorRecordCommon, IMajorRecordCommonGetter> > > PatchesFromRecordSets <TMod, TModGetter>(Dictionary <CustomSet <ModKey>, RecordsClassifiedByMasters <TMod, TModGetter> > recordSets, CustomSetFactory <ModKey> setFactory, int maximumMastersPerMod = MAXIMUM_MASTERS_PER_MOD)
where TMod : class, IMod, TModGetter
where TModGetter : class, IModGetter, IMajorRecordContextEnumerable <TMod, TModGetter>
{
var patches = new List <HashSet <IModContext <TMod, TModGetter, IMajorRecordCommon, IMajorRecordCommonGetter> > >();
bool newRecordsFirst = true;
var temp = setFactory.NewSet();
var smallestSets = new Dictionary <CustomSet <ModKey>, NewStruct2>();
while (recordSets.Count > 0)
{
temp.Clear();
int largestMasterSetCount = 0;
CustomSet <ModKey> largestMasterSet = null !;
foreach (var(masterSet, data) in recordSets)
{
if (newRecordsFirst)
{
if (!data.hasNewRecords)
{
continue;
}
}
else
{
temp.UnionWith(masterSet);
}
if (largestMasterSet is null || data.MasterCount > largestMasterSetCount)
{
largestMasterSetCount = data.MasterCount;
largestMasterSet = masterSet;
}
}
if (largestMasterSet is null)
{
newRecordsFirst = false;
continue;
}
if (!newRecordsFirst)
{
if (temp.Count <= maximumMastersPerMod)
{
var patchContents = new HashSet <IModContext <TMod, TModGetter, IMajorRecordCommon, IMajorRecordCommonGetter> >();
foreach (var(masterSet, data) in recordSets)
{
patchContents.UnionWith(data.contextSet);
}
recordSets.Clear();
patches.Add(patchContents);
continue;
}
}
var largestMasterRecordSet = recordSets[largestMasterSet];
recordSets.Remove(largestMasterSet);
while (recordSets.Count > 0)
{
int smallestAdditionalMasterSetCount = 0;
CustomSet <ModKey> smallestMasterSet = null !;
smallestSets.Clear();
foreach (var(masterSet, data) in recordSets)
{
if (newRecordsFirst)
{
if (!data.hasNewRecords)
{
continue;
}
}
// the set of distinct masterRecords that would be added to our current target if we added this recordSet to the mix.
var temp2 = masterSet.Except(largestMasterSet);
int additionalMasterCount = temp2.Count;
if (additionalMasterCount == smallestAdditionalMasterSetCount)
{
var foo = smallestSets.Autovivify(temp2, () => new(0, new()));
foo.recordCount += data.contextSet.Count;
foo.masterSets.Add(masterSet);
}
if (smallestMasterSet is null || additionalMasterCount < smallestAdditionalMasterSetCount)
{
smallestSets.Clear();
smallestSets[temp.ToCustomSet()] = new(data.contextSet.Count, new() { masterSet });
smallestAdditionalMasterSetCount = additionalMasterCount;
smallestMasterSet = masterSet;
}
}
if (smallestMasterSet is null)
{
newRecordsFirst = false;
continue;
}
if (smallestAdditionalMasterSetCount == 0)
{
foreach (var(_, (_, masterSets)) in smallestSets)
{
foreach (var masterSet in masterSets)
{
var recordSet = recordSets[masterSet];
recordSets.Remove(masterSet);
largestMasterRecordSet.contextSet.UnionWith(recordSet.contextSet);
}
}
}
else
{
int newMasterCount = largestMasterSetCount + smallestAdditionalMasterSetCount;
if (newMasterCount > maximumMastersPerMod)
{
break;
}
largestMasterSetCount = newMasterCount;
int maxCount = 0;
HashSet <CustomSet <ModKey> > victim = null !;
foreach (var(id, (count, masterSets)) in smallestSets)
{
if (victim is null || count > maxCount)
{
maxCount = count;
victim = masterSets;
}
}
foreach (var masterSet in victim)
{
var recordSet = recordSets[masterSet];
recordSets.Remove(masterSet);
largestMasterRecordSet.contextSet.UnionWith(recordSet.contextSet);
}
}
}
newRecordsFirst = false;
patches.Add(largestMasterRecordSet.contextSet);
}
return(patches);
}
