Method remove

classpath/java/util/TreeSet.java:188–212

()

    }

    public void remove() {
      if (! canRemove) throw new IllegalStateException();

      if (prevPrevCell != null && prevPrevCell.next == prevCell) {
        // cell to remove is not the first in the list.
        prevPrevCell.next = prevCell.next;
        prevCell = prevPrevCell;
      } else if (prevCell.next == cell && cell != null) {
        // cell to remove is the first in the list, but not the last.
        set = (PersistentSet) path.replaceWith(cell);
        prevCell = null;
      } else {
        // cell is alone in the list.
        set = (PersistentSet) path.remove();
        path = nextPath;
        if (path != null) {
          prevCell = null;
          cell = path.value();
          path = (PersistentSet.Path) set.find((Cell) cell);
          nextPath = nextPath();
        }
      }

      canRemove = false;
    }
  }    
}