refactor(core): Combine `is_` and `cast_` event functions.

* Use a single `as_foo` generated function to conditionally
  return a certain event type from a generic `zmk_event_t*`
  pointer.

1 files changed, 5 insertions, 1 deletions

diff --git a/app/src/display/main.c b/app/src/display/main.c
index 90789f9..55dd1ce 100644
--- a/app/src/display/main.c
+++ b/app/src/display/main.c
@@ -76,7 +76,11 @@ int zmk_display_init() {
 }
 
 int display_event_handler(const zmk_event_t *eh) {
-    struct zmk_activity_state_changed *ev = cast_zmk_activity_state_changed(eh);
+    struct zmk_activity_state_changed *ev = as_zmk_activity_state_changed(eh);
+    if (ev == NULL) {
+        return -ENOTSUP;
+    }
+
     switch (ev->state) {
     case ZMK_ACTIVITY_ACTIVE:
         start_display_updates();