| package org.eclipse.ui.internal.keybindings; |
| |
| import java.util.Iterator; |
| |
| public final class Util { |
| |
| public static int compare(Comparable left, Comparable right) { |
| if (left == null && right == null) |
| return 0; |
| else if (left == null) |
| return -1; |
| else if (right == null) |
| return +1; |
| else |
| return left.compareTo(right); |
| } |
| |
| public static int compare(Comparable[] left, Comparable[] right) { |
| if (left == null && right == null) |
| return 0; |
| else if (left == null) |
| return -1; |
| else if (right == null) |
| return +1; |
| else { |
| for (int i = 0; i < left.length && i < right.length; i++) { |
| int compareTo = compare(left[i], right[i]); |
| |
| if (compareTo != 0) |
| return compareTo; |
| } |
| |
| return left.length - right.length; |
| } |
| } |
| |
| public static int compare(Iterator left, Iterator right) |
| throws ClassCastException { |
| if (left == null && right == null) |
| return 0; |
| else if (left == null) |
| return -1; |
| else if (right == null) |
| return +1; |
| else { |
| while (left.hasNext() && right.hasNext()) { |
| int compareTo = ((Comparable) left.next()).compareTo( |
| (Comparable) right.next()); |
| |
| if (compareTo != 0) |
| return compareTo; |
| } |
| |
| return left.hasNext() ? +1 : right.hasNext() ? -1 : 0; |
| } |
| } |
| |
| private Util() { |
| super(); |
| } |
| } |
