public AsyncSortSequenceContext(
AsyncSortContext <TElement> childContext,
Func <TElement, Task <TKey> > keySelector,
IComparer <TKey> comparer,
bool descending
)
: base(childContext, @descending)
{
this.keySelector = keySelector;
this.comparer = comparer;
}
internal override AsyncSortContext <TElement> CreateContext(AsyncSortContext <TElement> current)
{
AsyncSortContext <TElement> context = new AsyncSortSequenceContext <TElement, TKey> (current, keySelector, comparer, descending);
return(parent != null?parent.CreateContext(context) : context);
}
internal abstract AsyncSortContext <TValue> CreateContext(AsyncSortContext <TValue> current);
private QuickSort(IEnumerable <TElement> source, AsyncSortContext <TElement> context)
{
this.elements = source.ToArray();
this.indexes = CreateIndexes(elements.Length);
this.context = context;
}
internal static async Task <IEnumerable <TElement> > Sort(IEnumerable <TElement> source, AsyncSortContext <TElement> context)
{
var sorter = new QuickSort <TElement>(source, context);
await sorter.PerformSort().ConfigureAwait(false);
var result = new TElement[sorter.indexes.Length];
for (var i = 0; i < sorter.indexes.Length; i++)
{
result[i] = sorter.elements[sorter.indexes[i]];
}
return(result);
}
protected AsyncSortContext(AsyncSortContext <TElement> childContext, bool descending)
{
this.childContext = childContext;
this.descending = descending;
}