The court shall rule without delay, in accordance with the rules of procedure applicable to it, on the referral of the priority question of constitutionality, after the public prosecutor and the parties, having been heard or called, have presented their observations on the priority question of constitutionality.
The court may, however, rule without taking the observations of the public prosecutor and the parties if it is clear from the separate pleading that there are no grounds for referring the priority question of constitutionality.
If they are submitted in writing, the observations of the public prosecutor and the other parties must appear in a separate written statement setting out the reasons. Otherwise, they cannot be attached to the decision referring the question to the Cour de cassation.