static abstract class Pos implements IntegerMappable, Comparable<Pos>, Serializable {
public int ord = -1;
+ private transient Sequence owner;
+
public int ord() { return ord; }
final Forest[] holder;
- Pos(int len) { this.holder = new Forest[len]; }
+ Pos(int len, Sequence owner) {
+ this.owner = owner;
+ this.holder = new Forest[len];
+ }
public abstract int provides();
public abstract int[] needs();
public abstract Pos prev();
public abstract Pos next();
- abstract Sequence owner();
+ /** the element which produces the sequence to which this Position belongs */
+ public Sequence owner() { return owner; }
+
abstract Element element();
public abstract int numPops();
final int pos;
private final Position next;
private final Position prev;
- private transient Sequence owner;
public int provides() { return owner().sernum; }
public int[] needs() { return owner().needs_int(); }
public boolean owner_needed_or_hated() { return owner().needed_or_hated; }
private Position(Sequence owner, int pos, Position prev) {
- super(owner.elements.length);
- this.owner = owner;
+ super(owner.elements.length,owner);
this.pos = pos;
this.next = pos==owner.elements.length ? null : new Position(owner, pos+1, this);
this.prev = prev;
/** the element immediately after this Position, or null if this is the last Position */
public Element element() { return pos>=owner().elements.length ? null : owner().elements[pos]; }
- /** the element which produces the sequence to which this Position belongs */
- public Sequence owner() { return owner; }
-
/** the next Position (the Position after <tt>this.element()</tt>) */
public Position next() { return next; }