typedef void (*cfglr_callback_t)(cfglr_signaler_t *signaler, cfglr_element_t *element, cfglr_signal_e sig);

typedef struct {
  cfglr_callback_t callback;
} cfglr_callback_handle_t;

void cfglr_signaler_callback_init(cfglr_signaler_t *signaler, cfglr_element_t *element, cfglr_handle_t *handle);
void cfglr_signaler_callback_dispatch(cfglr_signaler_t *signaler, cfglr_element_t *element, cfglr_signal_e sig);

#define CFGLR_SIGNALER_CALLBACK(FN_CALLBACK) (cfglr_signaler_t){\
  .init = &cfglr_signaler_callback_init,\
  .dispatch = &cfglr_signaler_callback_dispatch,\
  .handle = (void*)FN_CALLBACK\
}