public IAsyncReader <T> CreateAsyncReader(PipeReader reader, Encoding encoding, object?context = null)
{
Utils.CheckArgumentNull(reader, nameof(reader));
Utils.CheckArgumentNull(encoding, nameof(encoding));
// context is legally null
var wrapper = new PipeReaderAdapter(reader, encoding);
return(CreateAsyncReader(wrapper, context));
}
// continue after a ReadAsync call completes
static async ValueTask <int> ReadAsync_ContinueAfterReadAsync(PipeReaderAdapter self, ValueTask <ReadResult> waitFor, Memory <char> into, CancellationToken cancellationToken)
{
tryAgainAsync:
var res = await ConfigureCancellableAwait(self, waitFor, cancellationToken);
var handled = self.MapByteSequenceToChar(res, into);
// we need to wait for more to happen, returning 0 will
// incorrectly signal that the writer has finished
if (handled == 0 && !self.IsComplete)
{
waitFor = self.Inner.ReadAsync(cancellationToken);
goto tryAgainAsync;
}
return(handled);
}
