private static Async::System.Collections.Generic.IAsyncEnumerable <Result <LevelSelectors> > GetLevelSelectorsEnumerableAsync(
this ILevelSelectorsProvider session,
Context context,
Fingerprint weakFingerprint,
CancellationToken cts,
int level)
{
return(AsyncEnumerableExtensions.CreateSingleProducerTaskAsyncEnumerable <Result <LevelSelectors> >(
async() =>
{
var result = await session.GetLevelSelectorsAsync(context, weakFingerprint, cts, level);
return new[] { result };
}));
}
private static IAsyncEnumerable <Result <LevelSelectors> > GetLevelSelectorsEnumerableAsync(
this IReadOnlyMemoizationSessionWithLevelSelectors session,
Context context,
Fingerprint weakFingerprint,
CancellationToken cts,
int level)
{
return(AsyncEnumerableExtensions.CreateSingleProducerTaskAsyncEnumerable <Result <LevelSelectors> >(
async() =>
{
var result = await session.GetLevelSelectorsAsync(context, weakFingerprint, cts, level);
return new[] { result };
}));
}
/// <summary>
/// Enumerate known selectors for a given weak fingerprint.
/// </summary>
internal IAsyncEnumerable <GetSelectorResult> GetSelectors(Context context, Fingerprint weakFingerprint, CancellationToken cts)
{
return(AsyncEnumerableExtensions.CreateSingleProducerTaskAsyncEnumerable(() => getSelectorsCore()));
async Task <IEnumerable <GetSelectorResult> > getSelectorsCore()
{
var selectors = await GetSelectorsCoreAsync(context, weakFingerprint);
if (!selectors)
{
return(new GetSelectorResult[] { new GetSelectorResult(selectors) });
}
return(selectors.Value.Select(s => new GetSelectorResult(s)));
}
}
/// <inheritdoc />
public Async::System.Collections.Generic.IAsyncEnumerable <StructResult <StrongFingerprint> > EnumerateStrongFingerprints(Context context)
{
var ctx = new OperationContext(context);
return(AsyncEnumerableExtensions.CreateSingleProducerTaskAsyncEnumerable <StructResult <StrongFingerprint> >(() => _database.EnumerateStrongFingerprintsAsync(ctx)));
}
public IAsyncEnumerable <StructResult <StrongFingerprint> > EnumerateStrongFingerprints(Context context)
{
var ctx = new OperationContext(context);
return(AsyncEnumerableExtensions.CreateSingleProducerTaskAsyncEnumerable(() => EnumerateStrongFingerprintsAsync(ctx)));
}
