bool psi_number_validate(struct psi_data *data, struct psi_number *exp,
struct psi_validate_scope *scope);
token_t psi_number_eval(struct psi_number *exp, impl_val *res,
bool psi_number_validate(struct psi_data *data, struct psi_number *exp,
struct psi_validate_scope *scope);
token_t psi_number_eval(struct psi_number *exp, impl_val *res,