protected override object[] ConvertBack(object value, Type[] targetTypes)
{
if (treeInfo.IsEmptyBackExpr() && !treeInfo.IsSimpleExpr())
{
errorHandler.Throw(ErrorHelper.Err101_TwoWay(), null);
}
if (treeInfo.IsEmptyBackExpr())
{
return(Enumerable.Range(0, calculator.Operands.Count()).Select(x => value).ToArray());
}
return(calculator.ResolveBack(values, value).ToArray());
}
protected override object[] ConvertBack(object value, Type[] targetTypes)
{
if (treeInfo.IsEmptyBackExpr() && !treeInfo.IsSimpleExpr())
{
errorHandler.Throw(ErrorHelper.Err101_TwoWay(), null);
}
if (!isBackConvesionInitialized)
{
Type valueType = value.Return(x => x.GetType(), () => null);
var backExprType = valueType ?? backConversionType;
if (backExprType == null)
{
errorHandler.Throw(ErrorHelper.Err104(), null);
}
calculator.InitBack(valueType ?? backConversionType);
isBackConvesionInitialized = true;
}
List <object> res = new List <object>();
foreach (var op in calculator.Operands)
{
if (!op.IsTwoWay || op.BackConverter == null)
{
res.Add(value);
}
else
{
res.Add(op.BackConverter(new object[] { value }));
}
}
return(res.ToArray());
}