public ComparableList<Value> execute(Expr expr, ArrayList<MyIterator> iterators, BoolExpr bool) {
mList = new ComparableList<Value>();
if (iterators.isEmpty()) {
if (bool == null || bool.eval()) {
mList.add(expr.eval()); // TODO auswerten
}
return mList;
}
MyIterator myIt = iterators.get(0);
Value val = myIt.getExpr().eval();
iterators.remove(0);
if (val instanceof SetOrList) {
SetOrList sol = (SetOrList) val;
Iterator<Value> it = sol.iterator();
while (it.hasNext()) {
Environment.putValue(myIt.getVariable(), it.next());
mList.addAll(execute(expr, iterators, bool));
}
return mList;
} else {
throw new RuntimeException();
}
}
public String toString() {
String result = "";
if (mList.size() == 1) {
result = mList.getFirst().toString();
}
if (mList.size() > 1) {
for (int i = 0; i < mList.size(); i++) {
if (i == 0) {
result += mList.get(i).toString();
} else {
result += ", " + mList.get(i).toString();
}
}
}
return result;
}