private void CheckRecursion(Spreadsheet spreadsheet, Cell current, ISet <CellAddress> stack)
{
try
{
var dependencies = PooledHashSet <CellAddress> .GetInstance();
try
{
GetDependencies(current.Expression, dependencies);
if (dependencies.Overlaps(stack))
{
throw new CircularCellRefereceException(Resources.CircularReference);
}
stack.Add(current.Address);
foreach (var address in dependencies)
{
CheckRecursion(spreadsheet, spreadsheet[address], stack);
}
stack.Remove(current.Address);
}
finally
{
dependencies.Free();
}
}
catch (CircularCellRefereceException ex)
{
throw SpreadsheetException.AddCellAddressToErrorStack(ex, current.Address);
}
}
public object Evaluate(SpreadsheetProcessor processor)
{
try
{
return(Expression.Evaluate(processor));
}
catch (SpreadsheetException exception)
{
throw SpreadsheetException.AddCellAddressToErrorStack(exception, Address);
}
catch (Exception exception)
{
throw SpreadsheetException.AddCellAddressToErrorStack(new ExpressionEvaluationException(exception.Message, exception), Address);
}
}
