/**
* Used by the lazy ref evals whenever they need To Get the value of a contained cell.
*/
/* package */
public ValueEval EvaluateReference(IEvaluationSheet sheet, int sheetIndex, int rowIndex,
int columnIndex, EvaluationTracker tracker)
{
IEvaluationCell cell = sheet.GetCell(rowIndex, columnIndex);
return(EvaluateAny(cell, sheetIndex, rowIndex, columnIndex, tracker));
}
public SheetRefEvaluator(WorkbookEvaluator bookEvaluator, EvaluationTracker tracker, int sheetIndex)
{
if (sheetIndex < 0)
{
throw new ArgumentException("Invalid sheetIndex: " + sheetIndex + ".");
}
_bookEvaluator = bookEvaluator;
_tracker = tracker;
_sheetIndex = sheetIndex;
}
public OperationEvaluationContext(WorkbookEvaluator bookEvaluator, IEvaluationWorkbook workbook, int sheetIndex, int srcRowNum,
int srcColNum, EvaluationTracker tracker)
{
_bookEvaluator = bookEvaluator;
_workbook = workbook;
_sheetIndex = sheetIndex;
_rowIndex = srcRowNum;
_columnIndex = srcColNum;
_tracker = tracker;
}
/**
* @return never <c>null</c>, never {@link BlankEval}
*/
private ValueEval EvaluateAny(IEvaluationCell srcCell, int sheetIndex,
int rowIndex, int columnIndex, EvaluationTracker tracker)
{
bool shouldCellDependencyBeRecorded = _stabilityClassifier == null ? true
: !_stabilityClassifier.IsCellFinal(sheetIndex, rowIndex, columnIndex);
ValueEval result;
if (srcCell == null || srcCell.CellType != CellType.FORMULA)
{
result = GetValueFromNonFormulaCell(srcCell);
if (shouldCellDependencyBeRecorded)
{
tracker.AcceptPlainValueDependency(_workbookIx, sheetIndex, rowIndex, columnIndex, result);
}
return(result);
}
FormulaCellCacheEntry cce = _cache.GetOrCreateFormulaCellEntry(srcCell);
if (shouldCellDependencyBeRecorded || cce.IsInputSensitive)
{
tracker.AcceptFormulaDependency(cce);
}
IEvaluationListener evalListener = _evaluationListener;
if (cce.GetValue() == null)
{
if (!tracker.StartEvaluate(cce))
{
return(ErrorEval.CIRCULAR_REF_ERROR);
}
OperationEvaluationContext ec = new OperationEvaluationContext(this, _workbook, sheetIndex, rowIndex, columnIndex, tracker);
try
{
Ptg[] ptgs = _workbook.GetFormulaTokens(srcCell);
if (evalListener == null)
{
result = EvaluateFormula(ec, ptgs);
}
else
{
evalListener.OnStartEvaluate(srcCell, cce);
result = EvaluateFormula(ec, ptgs);
evalListener.OnEndEvaluate(cce, result);
}
tracker.UpdateCacheResult(result);
}
catch (NotImplementedException e)
{
throw AddExceptionInfo(e, sheetIndex, rowIndex, columnIndex);
}
finally
{
tracker.EndEvaluate(cce);
}
}
else
{
if (evalListener != null)
{
evalListener.OnCacheHit(sheetIndex, rowIndex, columnIndex, cce.GetValue());
}
return(cce.GetValue());
}
if (IsDebugLogEnabled())
{
String sheetName = GetSheetName(sheetIndex);
CellReference cr = new CellReference(rowIndex, columnIndex);
LogDebug("Evaluated " + sheetName + "!" + cr.FormatAsString() + " To " + cce.GetValue().ToString());
}
// Usually (result === cce.getValue())
// But sometimes: (result==ErrorEval.CIRCULAR_REF_ERROR, cce.getValue()==null)
// When circular references are detected, the cache entry is only updated for
// the top evaluation frame
//return cce.GetValue();
return(result);
}