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Java > Open Source Codes > com > caucho > quercus > env > NumberValue


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */

29
30 package com.caucho.quercus.env;
31
32 /**
33  * Represents a PHP number value (double or long).
34  */

35 public abstract class NumberValue extends Value {
36   /**
37    * Returns true for equality
38    */

39   public int cmp(Value rValue)
40   {
41     double l = toDouble();
42     double r = rValue.toDouble();
43
44     if (l == r)
45       return 0;
46     else if (l < r)
47       return -1;
48     else
49       return 1;
50   }
51
52   /**
53    * Compare two numbers.
54    */

55   public static int compareNum(Value lValue, Value rValue)
56   {
57     Value lVal = lValue.toValue();
58     Value rVal = rValue.toValue();
59
60     if (lVal instanceof DoubleValue || rVal instanceof DoubleValue) {
61       double lDouble = lVal.toDouble();
62       double rDouble = rVal.toDouble();
63       if (lDouble < rDouble) return -1;
64       if (lDouble > rDouble) return 1;
65       return 0;
66     }
67     long lLong = lVal.toLong();
68     long rLong = rVal.toLong();
69     if (lLong < rLong) return -1;
70     if (lLong > rLong) return 1;
71     return 0;
72   }
73
74 }
75
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