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1 package com.thaiopensource.datatype.xsd;
2
3 import org.relaxng.datatype.ValidationContext;
4
5 class DoubleDatatype extends DatatypeBase implements OrderRelation {
6
7 boolean lexicallyAllows(String  str) {
8 if (str.equals("INF") || str.equals("-INF") || str.equals("NaN"))
9 return true;
10 int len = str.length();
11 boolean hadSign = false;
12 boolean hadDecimalPoint = false;
13 boolean hadDigit = false;
14 boolean hadE = false;
15 for (int i = 0; i < len; i++) {
16 switch (str.charAt(i)) {
17 case '+':
18 case '-':
19 if (hadDigit || hadDecimalPoint || hadSign)
20 return false;
21 hadSign = true;
22 break;
23 case '0':
24 case '1':
25 case '2':
26 case '3':
27 case '4':
28 case '5':
29 case '6':
30 case '7':
31 case '8':
32 case '9':
33 hadDigit = true;
34 break;
35 case 'e':
36 case 'E':
37 if (hadE || !hadDigit)
38 return false;
39 hadDigit = false;
40 hadE = true;
41 hadSign = false;
42 hadDecimalPoint = false;
43 break;
44 case '.':
45 if (hadDecimalPoint || hadE)
46 return false;
47 hadDecimalPoint = true;
48 break;
49 default:
50 return false;
51 }
52 }
53 return hadDigit;
54 }
55
56 Object getValue(String str, ValidationContext vc) {
57 if (str.equals("INF"))
58 return new Double (Double.POSITIVE_INFINITY);
59 if (str.equals("-INF"))
60 return new Double (Double.NEGATIVE_INFINITY);
61 if (str.equals("NaN"))
62 return new Double (Double.NaN);
63 return new Double (str);
64 }
65
66 OrderRelation getOrderRelation() {
67 return this;
68 }
69
70 public boolean isLessThan(Object obj1, Object obj2) {
71 return ((Double )obj1).doubleValue() < ((Double )obj2).doubleValue();
72 }
73
74 public boolean sameValue(Object value1, Object value2) {
75 double d1 = ((Double )value1).doubleValue();
76 double d2 = ((Double )value2).doubleValue();
77 return d1 == d2 || (d1 != d1 && d2 != d2);
79 }
80 }
81 |
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