@Override
public void eval(Interpreter interpreter, Expression... args) {
Bag eres = null;
if (args.length < 1) {
eres = new Bag();
} else {
// mamy generyczny bag - args[1] okresla jego typ
Expression bagTypeExpr = args[1];
bagTypeExpr.accept(interpreter, null);
QueryResult qr = interpreter.getQres().pop();
QueryResult clazz = Utils.collectionToObject(qr);
JavaClass<Collection> jc = (JavaClass<Collection>) clazz;
try {
Collection c = jc.value.newInstance();
eres = new Bag<Collection<QueryResult>>(c);
} catch (Exception e) {
throw new SBQLException(e);
}
}
QueryResult e1res = interpreter.getQres().pop();
StructSBQL s;
if (e1res instanceof StructSBQL) {
s = (StructSBQL) e1res;
} else {
s = new StructSBQL();
if (e1res instanceof Collection) {
s.addAll((Collection) e1res);
} else {
s.add(e1res);
}
}
eres.addAll(s);
interpreter.getQres().push(eres);
}
