public override bool MoveNext()
{
if (Index < 0) // enumerator стоит перед первой записью
{
MetaInfo = (TMetaInfo)((IMarketDataSerializer)Serializer).CreateMetaInfo(_originalMetaInfo.Date);
MetaInfo.CopyFrom(_originalMetaInfo);
Index = 0;
}
if (Index >= MetaInfo.Count)
{
return(false);
}
if (Index == PartSize)
{
PartSize += Reader.ReadInt();
}
Current = Serializer.MoveNext(this);
Previous = Current;
if (Index == (PartSize - 1))
{
//Reader.AlignReader();
if ((Reader.Offset % 8) != 0)
{
var shift = ((Reader.Offset / 8) * 8 + 8) - Reader.Offset;
Reader.Offset += shift;
}
}
Index++;
return(true);
}
public static void WritePrice <T>(this BitArrayWriter writer, decimal price, decimal prevPrice, MetaInfo <T> info, SecurityId securityId, bool useLong = false)
where T : MetaInfo <T>
{
if ((price % info.PriceStep) != 0)
{
throw new ArgumentException(LocalizedStrings.Str1007Params.Put(info.PriceStep, securityId, price), "info");
}
try
{
var stepCount = (long)((price - prevPrice) / info.PriceStep);
// ОЛ может содержать заявки с произвольно большими ценами
if (useLong)
{
writer.WriteLong(stepCount);
}
else
{
writer.WriteInt((int)stepCount);
}
}
catch (OverflowException ex)
{
throw new ArgumentException(LocalizedStrings.Str1008Params.Put(price, prevPrice, info.PriceStep, useLong), ex);
}
}
public static decimal ReadPrice <T>(this BitArrayReader reader, decimal prevPrice, MetaInfo <T> info, bool useLong = false)
where T : MetaInfo <T>
{
var count = useLong ? reader.ReadLong() : reader.ReadInt();
return(prevPrice + count * info.PriceStep);
}