public override void Evaluate(Dictionary <MoneyColumnMetadataJsModel, CalculatedResult> dependencies)
{
if (!_evaluated)
{
_evaluated = true;
dependencies.TryGetValue(_column, out var matchedDependency);
Value = matchedDependency?.IsOk == true
? matchedDependency
: CalculatedResult.ResolutionFail(_column,
_column.IsComputed
? _column.UserFriendlyName
: (_column.Provider + "/" + (_column.UserFriendlyName ?? _column.AccountName)));
}
}
public FailedToParseExpression(MoneyColumnMetadataJsModel model, string function)
{
_function = function;
Value = CalculatedResult.ResolutionFail(model, function);
}
public override void Evaluate(Dictionary <MoneyColumnMetadataJsModel, CalculatedResult> dependencies)
{
if (Left == null || Right == null)
{
Value = CalculatedResult.ResolutionFail(_model, _symbol);
return;
}
Left.Evaluate(dependencies);
Right.Evaluate(dependencies);
var leftValue = Left.Value.Value;
var rightValue = Right.Value.Value;
bool leftIsNan = leftValue != null && double.IsNaN(leftValue.Value);
bool rightIsNan = rightValue != null && double.IsNaN(rightValue.Value);
if (leftIsNan && !rightIsNan)
{
leftValue = 0;
}
if (rightIsNan && !leftIsNan)
{
rightValue = 0;
}
IEnumerable <string> failedToResolve = Left.Value.FailedToResolve.Concat(Right.Value.FailedToResolve).ToList();
double?value = null;
double adjustment = 0;
string ccy = null;
var leftValueAdj = Left.Value;
var rightValueAdj = Right.Value;
while (leftValueAdj?.Value != null && double.IsNaN(leftValueAdj.Value.Value))
{
leftValueAdj = leftValueAdj.PreviousValue;
}
while (rightValueAdj?.Value != null && double.IsNaN(rightValueAdj.Value.Value))
{
rightValueAdj = rightValueAdj.PreviousValue;
}
switch (_symbol)
{
case "??":
value = leftValue ?? rightValue;
ccy = SelectCcy(Left.Value.Ccy, Right.Value.Ccy);
adjustment = leftValueAdj?.Adjustment ?? rightValueAdj?.Adjustment ?? 0;
break;
case "+":
value = (leftValue ?? 0) + (rightValue ?? 0);
ccy = SelectCcy(Left.Value.Ccy, Right.Value.Ccy);
adjustment = (leftValueAdj?.Adjustment ?? 0) + (rightValueAdj?.Adjustment ?? 0);
break;
case "-":
value = (leftValue ?? 0) - (rightValue ?? 0);
ccy = SelectCcy(Left.Value.Ccy, Right.Value.Ccy);
adjustment = (leftValueAdj?.Adjustment ?? 0) - (rightValueAdj?.Adjustment ?? 0);
break;
case "*":
value = (leftValue ?? 0) * (rightValue ?? 0);
adjustment = (leftValueAdj?.Adjustment ?? 0) * (rightValueAdj?.Adjustment ?? 0);
ccy = SelectCcy(Left.Value.Ccy, Right.Value.Ccy);
// TODO ccy?
break;
case "/":
value = (leftValue ?? 0) / (rightValue ?? 0);
var leftAdj = leftValueAdj?.Adjustment ?? 0;
var rightAdj = rightValueAdj?.Adjustment ?? 0;
if (Math.Abs(rightAdj) < double.Epsilon)
{
rightAdj = 1;
}
adjustment = leftAdj / rightAdj;
ccy = SelectCcy(Left.Value.Ccy, Right.Value.Ccy);
// TODO ccy?
break;
default:
failedToResolve = new[] { _symbol };
break;
}
Value = CalculatedResult.FromComputed(_model, value, ccy, failedToResolve, adjustment, ToString());
}