@Override
public Object execute(
RArray base, Selector selectorI, Selector selectorJ, boolean drop, int exact)
throws UnexpectedResultException {
int[] ndim = base.dimensions();
int m = ndim[0];
int n = ndim[1];
selectorI.start(m, ast);
selectorJ.start(n, ast);
int i = selectorI.nextIndex(ast);
int j = selectorJ.nextIndex(ast);
assert Utils.check(i != RInt.NA && j != RInt.NA); // ensured by subscript selectors
int offset = j * m + i;
if (!(base instanceof RList)) {
return base.boxedGet(offset);
} else {
return ((RList) base).getRAny(offset);
}
}
