code: protected JsonToken handleRegEx() throws IOException {
  		String regex = readCString();
  		String pattern = readCString();
  		getContext().value = Pattern.compile(regex, regexStrToFlags(pattern));
  		return JsonToken.VALUE_EMBEDDED_OBJECT;
  	}
docs: Reads and compiles a regular expression
  @return the json token read
  @throws IOException if an I/O error occurs