Method iter

basex-core/src/main/java/org/basex/query/func/fn/FnRemove.java:19–45

(final QueryContext qc)

 */
public final class FnRemove extends StandardFunc {
  @Override
  public Iter iter(final QueryContext qc) throws QueryException {
    final Iter input = arg(0).iter(qc);
    final LongList pos = positions(qc);

    // value-based iterator
    if(input.valueIter() || pos.size() > 1) return value(input.value(qc, null), pos, qc).iter();

    final long size = input.size();
    return new Iter() {
      final long p = pos.get(0);
      long c;

      @Override
      public Item next() throws QueryException {
        return c++ != p || input.next() != null ? input.next() : null;
      }
      @Override
      public Item get(final long i) throws QueryException {
        return input.get(i < p ? i : i + 1);
      }
      @Override
      public long size() {
        return Math.max(-1, size - 1);
      }
    };
  }

  @Override
  public Value value(final QueryContext qc) throws QueryException {