/// <summary>
/// Parse commodity prices from a textual representation
/// </summary>
/// <remarks>
/// ported from parse_price_directive
/// </remarks>
public Tuple <Commodity, PricePoint> ParsePriceDirective(string line, bool doNotAddPrice = false, bool noDate = false)
{
string timeField = StringExtensions.NextElement(ref line);
if (String.IsNullOrWhiteSpace(timeField))
{
return(default(Tuple <Commodity, PricePoint>));
}
string dateField = line;
string symbolAndPrice = null;
DateTime dateTime = default(DateTime);
string symbol = null;
if (!noDate && Char.IsDigit(timeField[0]))
{
symbolAndPrice = StringExtensions.NextElement(ref timeField);
if (String.IsNullOrWhiteSpace(symbolAndPrice))
{
return(default(Tuple <Commodity, PricePoint>));
}
dateTime = TimesCommon.Current.ParseDateTime(dateField + " " + timeField);
}
else if (!noDate && Char.IsDigit(dateField[0]))
{
symbolAndPrice = timeField;
dateTime = TimesCommon.Current.ParseDate(dateField);
}
else
{
symbol = dateField;
symbolAndPrice = timeField;
dateTime = TimesCommon.Current.CurrentTime;
}
if (String.IsNullOrEmpty(symbol))
{
symbol = Commodity.ParseSymbol(ref symbolAndPrice);
}
PricePoint point = new PricePoint(dateTime, new Amount());
point.Price.Parse(ref symbolAndPrice, AmountParseFlagsEnum.PARSE_NO_MIGRATE);
Validator.Verify(() => point.Price.Valid());
Logger.Current.Debug(DebugCommodityDownload, () => "Looking up symbol: " + symbol);
Commodity commodity = FindOrCreate(symbol);
if (commodity != null)
{
Logger.Current.Debug(DebugCommodityDownload, () => String.Format("Adding price for {0}: {1} {2}", symbol, point.When, point.Price));
if (!doNotAddPrice)
{
commodity.AddPrice(point.When, point.Price, true);
}
commodity.Flags |= CommodityFlagsEnum.COMMODITY_KNOWN;
return(new Tuple <Commodity, PricePoint>(commodity, point));
}
return(default(Tuple <Commodity, PricePoint>));
}
public CostBreakdown Exchange(Amount amount, Amount cost, bool isPerUnit = false, bool addPrice = true, DateTime?moment = null, string tag = null)
{
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: {0} for {1}", amount, cost));
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: is-per-unit = {0}", isPerUnit));
if (moment.HasValue)
{
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: moment = {0}", moment.Value));
}
if (tag != null)
{
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: tag = {0}", tag));
}
Commodity commodity = amount.Commodity;
Annotation currentAnnotation = null;
if (commodity.IsAnnotated)
{
currentAnnotation = ((AnnotatedCommodity)commodity).Details;
}
Amount perUnitCost = isPerUnit || amount.IsRealZero ? cost.Abs() : (cost / amount).Abs();
if (!cost.HasCommodity)
{
perUnitCost.ClearCommodity();
}
if (cost.HasAnnotation)
{
perUnitCost = perUnitCost.StripAnnotations(new AnnotationKeepDetails());
}
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: per-unit-cost = {0}", perUnitCost));
// Do not record commodity exchanges where amount's commodity has a
// fixated price, since this does not establish a market value for the
// base commodity.
if (addPrice && !perUnitCost.IsRealZero && (currentAnnotation == null || !(currentAnnotation.Price != null && currentAnnotation.IsPriceFixated)) &&
commodity.Referent != perUnitCost.Commodity.Referent)
{
Exchange(commodity, perUnitCost, moment ?? TimesCommon.Current.CurrentTime);
}
CostBreakdown breakdown = new CostBreakdown();
breakdown.FinalCost = !isPerUnit ? cost : cost *amount.Abs();
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: final-cost = {0}", breakdown.FinalCost));
if (currentAnnotation != null && currentAnnotation.Price != null)
{
breakdown.BasisCost = (currentAnnotation.Price * amount).Unrounded();
}
else
{
breakdown.BasisCost = breakdown.FinalCost;
}
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: basis-cost = {0}", breakdown.BasisCost));
Annotation annotation = new Annotation(perUnitCost, moment.HasValue ? (Date)moment.Value.Date : default(Date), tag);
annotation.IsPriceCalculated = true;
if (currentAnnotation != null && currentAnnotation.IsPriceFixated)
{
annotation.IsPriceFixated = true;
}
if (moment.HasValue)
{
annotation.IsDateCalculated = true;
}
if (!string.IsNullOrEmpty(tag))
{
annotation.IsTagCalculated = true;
}
breakdown.Amount = new Amount(amount, annotation);
Logger.Current.Debug("commodity.prices.add", () => String.Format("exchange: amount = {0}", breakdown.Amount));
return(breakdown);
}
