1 ////////////////////////////////////////////////////////////////////////////////
2 // MillScript: an Open Spice interpreter and batch website creation tool
3 // Copyright (C) 2001-2004 Open World Ltd
4 //
5 // This file is part of MillScript.
6 //
7 // MillScript is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU General Public License as published by the Free
9 // Software Foundation; either version 2 of the License, or (at your option)
10 // any later version.
11 //
12 // MillScript is distributed in the hope that it will be useful, but WITHOUT
13 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 // more details.
16 //
17 // You should have received a copy of the GNU General Public License along with
18 // MillScript; if not, write to the Free Software Foundation, Inc., 59 Temple
19 // Place, Suite 330, Boston, MA 02111-1307 USA
20 ////////////////////////////////////////////////////////////////////////////////
21 package org.millscript.millscript.datatypes;
22
23 import java.io.Serializable;
24 import java.util.Comparator;
25
26 /**
27 * This class implements a general comparator, which handles incompatible
28 * types without throwing a ClassCastException.
29 *
30 * @deprecated this is deprecated in favour of the new MillScript-Util list
31 * and map implementations genericised BinaryTreeMap, which only maps
32 * comparable types
33 */
34 @Deprecated
35 public final class GeneralComparator implements Comparator< Object >, Serializable {
36
37 /**
38 * This is the ID from the release 10.0.0 for future compatibility.
39 */
40 private static final long serialVersionUID = -8277034414223329726L;
41
42 /**
43 * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
44 */
45 @SuppressWarnings( "unchecked" )
46 public int compare( final Object a, final Object b ) {
47 if ( a instanceof Comparable ) {
48 final Class ca = a.getClass();
49 final Class cb = b.getClass();
50 if ( ca == cb ) {
51 return ((Comparable< Object >)a).compareTo( b );
52 } else {
53 return ca.hashCode() - cb.hashCode();
54 }
55 } else {
56 return a.hashCode() - b.hashCode();
57 }
58 }
59
60 }