/**
* Returns the hashcode of value.<br>
* If null it will return JSONNull.getInstance().hashCode().<br>
* If value is JSON, JSONFunction or String, value.hashCode is returned, otherwise the value is
* transformed to a String an its hashcode is returned.
*/
public static int hashCode(Object value) {
if (value == null) {
return JSONNull.getInstance().hashCode();
} else if (value instanceof JSON || value instanceof String || value instanceof JSONFunction) {
return value.hashCode();
} else {
return String.valueOf(value).hashCode();
}
}
private static String toString(JSONObject jsonObject) {
if (jsonObject.isNullObject()) {
return JSONNull.getInstance().toString();
}
Iterator keys = jsonObject.keys();
StringBuffer sb = new StringBuffer("{");
while (keys.hasNext()) {
if (sb.length() > 1) {
sb.append(',');
}
Object o = keys.next();
sb.append(quote(o.toString()));
sb.append(':');
sb.append(toString(jsonObject.get(String.valueOf(o))));
}
sb.append('}');
return sb.toString();
}
/** Tests if the obj is a javaScript null. */
public static boolean isNull(Object obj) {
if (obj instanceof JSONObject) {
return ((JSONObject) obj).isNullObject();
}
return JSONNull.getInstance().equals(obj);
}
private static String toString(JSONNull jsonNull) {
return jsonNull.toString();
}