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package com.jclark.xsl.tr;
final class Priority {
private final double n;
static private final Priority defaultCache[] = new Priority[]{
new Priority(-0.5),
new Priority(-0.25),
new Priority(0.0),
new Priority(0.5)
};
private Priority(double n) {
this.n = n;
}
// -2 means -0.5; -1 means -0.25; 0 means 0; 1 means 0.5
public static Priority createDefault(int p) {
if (p < -2 || p > 1)
throw new IllegalArgumentException("bad default");
return defaultCache[p + 2];
}
public static Priority create(String s) throws NumberFormatException {
if (s == null)
return null;
return new Priority(Double.valueOf(s).doubleValue());
}
public int compareTo(Priority p) {
if (n == p.n)
return 0;
return n < p.n ? -1 : 1;
}
}
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