RefPtg refA = (RefPtg) ptgA;
return new AreaPtg(refA.getRow(), refB.getRow(), refA.getColumn(), refB.getColumn(),
refA.isRowRelative(), refB.isRowRelative(), refA.isColRelative(), refB.isColRelative());
}
if (ptgA instanceof Ref3DPtg) {
Ref3DPtg refA = (Ref3DPtg) ptgA;
return new Area3DPtg(refA.getRow(), refB.getRow(), refA.getColumn(), refB.getColumn(),
refA.isRowRelative(), refB.isRowRelative(), refA.isColRelative(), refB.isColRelative(),
refA.getExternSheetIndex());
}
// Note - other operand types (like AreaPtg) which probably can't evaluate
// do not cause validation errors at parse time
return null;
}