public Double toDouble(CssString input) {
try {
return Double.parseDouble(input.getValue());
} catch (NumberFormatException ex) {
return Double.NaN;
}
}
public boolean appendCssString(CssString expression) {
String quoteType = expression.getQuoteType();
cssOnly.append(quoteType).append(expression.getValue()).append(quoteType);
return true;
}