Method compareTo

src/main/java/wycc/util/AbstractItem.java:207–237

(Item other)

	}

	@Override
	public int compareTo(Item other) {
		int diff = opcode - other.getOpcode();
		if (diff != 0) {
			return diff;
		}
		// We have two items with the same opcode. Need to investigate their
		// structure.
		diff = size() - other.size();
		if (diff != 0) {
			return diff;
		}
		for (int i = 0; i != size(); ++i) {
			Item my_ith = get(i);
			Item other_ith = other.get(i);
			if (my_ith == null && other_ith == null) {
				// skip
			} else if(my_ith == null) {
				// null is below everything
				return -1;
			} else if(other_ith == null) {
				return 1;
			} else {
				diff = my_ith.compareTo(other_ith);
				if (diff != 0) {
					return diff;
				}
			}
		}
		return compareData(data, other.getData());
	}

	/**
	 * Compare the data object associated with a given syntactic item. An