internal static void AddItems <TKey, TElement>(Consumables.Lookup <TKey, TElement> lookup, ref (TKey, TKey, TKey, TKey) keys, ref (TElement, TElement, TElement, TElement) elements)
{
var grouping1 = lookup.GetGrouping(keys.Item1, create: true);
var grouping2 = lookup.GetGrouping(keys.Item2, create: true);
var grouping3 = lookup.GetGrouping(keys.Item3, create: true);
var grouping4 = lookup.GetGrouping(keys.Item4, create: true);
grouping1.Add(elements.Item1);
grouping2.Add(elements.Item2);
grouping3.Add(elements.Item3);
grouping4.Add(elements.Item4);
}
internal static void AddRemainingItems <TKey, TElement>(Consumables.Lookup <TKey, TElement> result, int count, ref (TKey, TKey, TKey, TKey) keys, ref (TElement, TElement, TElement, TElement) elements)
{
if (count >= 1)
{
AddItem(result, keys.Item1, elements.Item1);
if (count >= 2)
{
AddItem(result, keys.Item2, elements.Item2);
if (count >= 3)
{
AddItem(result, keys.Item3, elements.Item3);
}
}
}
}
public static void Execute <TSource, TKey, TElement>(ReadOnlySpan <TSource> source, Func <TSource, TKey> getKey, Func <TSource, TElement> getElement, bool _ignoreNullKeys, Consumables.Lookup <TKey, TElement> result)
{
var idx = 0;
var count = 0;
TSource item;
(TKey, TKey, TKey, TKey)keys = default;
(TElement, TElement, TElement, TElement)elements = default;
while (idx < source.Length)
{
item = source[idx++];
keys.Item1 = getKey(item);
if (_ignoreNullKeys && keys.Item1 == null)
{
continue;
}
elements.Item1 = getElement(item);
count = 1;
while (idx < source.Length)
{
item = source[idx++];
keys.Item2 = getKey(item);
if (_ignoreNullKeys && keys.Item2 == null)
{
continue;
}
elements.Item2 = getElement(item);
count = 2;
while (idx < source.Length)
{
item = source[idx++];
keys.Item3 = getKey(item);
if (_ignoreNullKeys && keys.Item3 == null)
{
continue;
}
elements.Item3 = getElement(item);
count = 3;
while (idx < source.Length)
{
item = source[idx++];
keys.Item4 = getKey(item);
if (_ignoreNullKeys && keys.Item4 == null)
{
continue;
}
elements.Item4 = getElement(item);
AddItems(result, ref keys, ref elements);
count = 0;
break;
}
break;
}
break;
}
}
AddRemainingItems(result, count, ref keys, ref elements);
}
public static void Execute <TSource, TKey>(ReadOnlySpan <TSource> source, Func <TSource, TKey> getKey, Consumables.Lookup <TKey, TSource> result)
{
var i = 0;
for (; i < source.Length - 4 + 1; i += 4)
{
var elements = (source[i + 0], source[i + 1], source[i + 2], source[i + 3]);
var keys = (getKey(elements.Item1), getKey(elements.Item2), getKey(elements.Item3), getKey(elements.Item4));
AddItems(result, ref keys, ref elements);
}
for (; i < source.Length; ++i)
{
var item = source[i];
AddItem(result, getKey(item), item);
}
}
public static void AddItem <TKey, TElement>(Consumables.Lookup <TKey, TElement> lookup, TKey key, TElement element) => lookup.GetGrouping(key, create: true).Add(element);
public Lookup(Consumables.Lookup <TKey, TSource> builder, Func <TSource, TKey> keySelector)
: base(builder, keySelector, x => x, false)
{
}
internal static Consumables.Lookup <TKey, TSource> ConsumeForJoin <TKey, TSource>(IEnumerable <TSource> source, Func <TSource, TKey> keySelector, IEqualityComparer <TKey> comparer)
{
Consumables.Lookup <TKey, TSource> builder = GetLookupBuilder <TKey, TSource>(comparer);
return(Utils.Consume(source, new Lookup <TSource, TKey, TSource>(builder, keySelector, x => x, true)));
}
internal static Consumables.Lookup <TKey, TElement> Consume <TSource, TKey, TElement>(IEnumerable <TSource> source, Func <TSource, TKey> keySelector, Func <TSource, TElement> elementSelector, IEqualityComparer <TKey> comparer)
{
Consumables.Lookup <TKey, TElement> builder = GetLookupBuilder <TKey, TElement>(comparer);
return(Utils.Consume(source, new Lookup <TSource, TKey, TElement>(builder, keySelector, elementSelector, false)));
}
public static void Execute <TSource, TKey, TElement, Enumerable, Enumerator>(Enumerable source, Func <TSource, TKey> getKey, Func <TSource, TElement> getElement, bool ignoreNullKeys, Consumables.Lookup <TKey, TElement> result)
where Enumerable : Optimizations.ITypedEnumerable <TSource, Enumerator>
where Enumerator : System.Collections.Generic.IEnumerator <TSource>
{
int count = 0;
TSource item;
(TKey, TKey, TKey, TKey)keys = default;
(TElement, TElement, TElement, TElement)elements = default;
using var e = source.GetEnumerator();
var moveNext = e.MoveNext();
while (moveNext)
{
item = e.Current;
moveNext = e.MoveNext();
keys.Item1 = getKey(item);
if (ignoreNullKeys && keys.Item1 == null)
{
continue;
}
elements.Item1 = getElement(item);
count = 1;
while (moveNext)
{
item = e.Current;
moveNext = e.MoveNext();
keys.Item2 = getKey(item);
if (ignoreNullKeys && keys.Item2 == null)
{
continue;
}
elements.Item2 = getElement(item);
count = 2;
while (moveNext)
{
item = e.Current;
moveNext = e.MoveNext();
keys.Item3 = getKey(item);
if (ignoreNullKeys && keys.Item3 == null)
{
continue;
}
elements.Item3 = getElement(item);
count = 3;
while (moveNext)
{
item = e.Current;
moveNext = e.MoveNext();
keys.Item4 = getKey(item);
if (ignoreNullKeys && keys.Item4 == null)
{
continue;
}
elements.Item4 = getElement(item);
AddItems(result, ref keys, ref elements);
count = 0;
break;
}
break;
}
break;
}
}
AddRemainingItems(result, count, ref keys, ref elements);
}
