/// <summary>
/// Reads all ticks from the IBarsReader with TimeStamp property less than
/// "until".
/// </summary>
public static IEnumerable <IBar> ReadUntilJustBefore(this IBarsReader reader, TimeStamp until)
{
while (reader.GetTimestampNextBarOrMaxValue() < until)
{
yield return(reader.ReadNext());
}
}
/// <summary>
/// Reads all available bars from the <paramref name="reader"/>.
/// </summary>
public static IEnumerable <IBar> ReadRemaining(this IBarsReader reader)
{
while (reader.ReadNext() is IBar bar)
{
yield return(bar);
}
}
/// <summary>
/// Gets the TimeStamp property of the "PeekBar" in the <paramref
/// name="reader"/>. Returns TimeStamp.MaxValue if no peek tick is
/// available.
/// </summary>
public static TimeStamp GetTimestampNextBarOrMaxValue(this IBarsReader reader)
{
return(reader.PeekNext()?.TimeStamp ?? TimeStamp.MaxValue);
}
/// <summary>
/// Sets up the bar stream reader so that the next bar it returns via
/// ReadNext() will have a timestampLocal property >= until.
/// </summary>
public static void MoveUntil(this IBarsReader reader, TimeStamp until)
{
// don't forget to call Count or something similar to actually run the enumerator
reader.ReadUntilJustBefore(until).Count();
}
