/**
* Parses <code>source</code> for special double values. These values
* include Double.NaN, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY.
*
* @param source the string to parse
* @param value the special value to parse.
* @param pos input/ouput parsing parameter.
* @return the special number.
*/
private static Number parseNumber(String source, double value,
ParsePosition pos) {
Number ret = null;
StringBuilder sb = new StringBuilder();
sb.append('(');
sb.append(value);
sb.append(')');
int n = sb.length();
int startIndex = pos.getIndex();
int endIndex = startIndex + n;
if (endIndex < source.length()) {
if (source.substring(startIndex, endIndex).compareTo(sb.toString()) == 0) {
ret = Double.valueOf(value);
pos.setIndex(endIndex);
}
}
return ret;
}
