private void EvaluateParam(string name, NCalc.ParameterArgs args, ICommandContext ctx, IServiceProvider svc)
{
switch (name.ToLowerInvariant())
{
case "pi":
args.Result = Math.PI;
break;
case "e":
args.Result = Math.E;
break;
case "all":
case "allin":
args.Result = Cur(svc, ctx);
break;
case "half":
args.Result = Cur(svc, ctx) / 2;
break;
case "max":
args.Result = Max(svc, ctx);
break;
default:
break;
}
}
private static void EvaluateParam(string name, NCalc.ParameterArgs args, ICommandContext ctx, IServiceProvider svc)
{
switch (name.ToUpperInvariant())
{
case "PI":
args.Result = Math.PI;
break;
case "E":
args.Result = Math.E;
break;
case "ALL":
case "ALLIN":
args.Result = Cur(svc, ctx);
break;
case "HALF":
args.Result = Cur(svc, ctx) / 2;
break;
case "MAX":
args.Result = Max(svc, ctx);
break;
default:
break;
}
}
private static void Expr_EvaluateParameter(string name, NCalc.ParameterArgs args)
{
switch (name.ToLowerInvariant())
{
case "pi": args.Result = Math.PI;
break;
case "e": args.Result = Math.E;
break;
}
}
private void EvaluateParameter(string name, NCalc.ParameterArgs args)
{
if (_dataset == null)
{
return;
}
Debug.Assert(_dataset.Values != null);
var referenceName = name;
// "this" is an alias for the currently evaluated descriptor (if any)
if (_descriptor != null && String.Equals(referenceName, IdentifierThis, StringComparison.OrdinalIgnoreCase))
{
referenceName = _descriptor.Value.Reference;
}
// "required" means that a value for current descriptor must be specified (or calculated with defaults)
if (_descriptor != null && String.Equals(referenceName, IdentifierRequired, StringComparison.OrdinalIgnoreCase))
{
DataSetValue dummy;
args.HasResult = true;
args.Result = _dataset.Values.TryGetValue(_descriptor.Value.Reference, out dummy);
return;
}
// Ending a parameter name with "?" returns null if it doesn't exist
if (referenceName.EndsWith(OperatorNullCoalesce.ToString(), StringComparison.OrdinalIgnoreCase))
{
referenceName.TrimEnd(OperatorNullCoalesce);
args.HasResult = true;
args.Result = null;
}
DataSetValue item;
if (_dataset.Values.TryGetValue(referenceName, out item))
{
args.HasResult = true;
args.Result = item.Value;
}
}
private void Exp_EvaluateParameter(string name, NCalc.ParameterArgs args)
{
//Avoid non-defined parameters with their names
args.Result = name;
}
