ValueEval retval = null;
switch (operands.length) {
default:
retval = ErrorEval.UNKNOWN_ERROR;
break;
case 1:
// ValueEval ve = singleOperandEvaluate(operands[0], srcRow, srcCol);
// if (ve instanceof NumericValueEval) {
// d = ((NumericValueEval) ve).getNumberValue();
// }
// else if (ve instanceof BlankEval) {
// // do nothing
// }
// else if (ve instanceof ErrorEval) {
// retval = ve;
// }
if (operands[0] instanceof RefEval) {
RefEval re = (RefEval) operands[0];
retval = re.getInnerValueEval();
}
else if (operands[0] instanceof AreaEval) {
AreaEval ae = (AreaEval) operands[0];
if (ae.contains(srcRow, srcCol)) { // circular ref!
retval = ErrorEval.CIRCULAR_REF_ERROR;
}
else if (ae.isRow()) {
if (ae.containsColumn(srcCol)) {
ValueEval ve = ae.getValueAt(ae.getFirstRow(), srcCol);
if (ve instanceof RefEval) {
ve = ((RefEval) ve).getInnerValueEval();
}
retval = ve;
}
else {
retval = ErrorEval.VALUE_INVALID;
}
}
else if (ae.isColumn()) {
if (ae.containsRow(srcRow)) {
ValueEval ve = ae.getValueAt(ae.getFirstRow(), srcCol);
if (ve instanceof RefEval) {
ve = ((RefEval) ve).getInnerValueEval();
}
retval = ve;
}
else {
retval = ErrorEval.VALUE_INVALID;
}
}
else {
retval = ErrorEval.VALUE_INVALID;
}
}
else {
retval = (ValueEval) operands[0];
}
}
if (retval instanceof BlankEval) {
retval = new NumberEval(0);
}
return retval;
