afiqzudinhadi/zmk
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refactor(core): Combine is_ and cast_ event functions.

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* Use a single `as_foo` generated function to conditionally
  return a certain event type from a generic `zmk_event_t*`
  pointer.
This commit is contained in:
Pete Johanson 2021-01-19 14:21:00 -05:00
parent 3fe2acc2d1
commit 3368a81057
8 changed files with 43 additions and 36 deletions
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9
app/include/zmk/event_manager.h
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@ -39,8 +39,7 @@ struct zmk_event_subscription {
struct event_type data; \
}; \
struct event_type##_event *new_##event_type(struct event_type); \
bool is_##event_type(const zmk_event_t *eh); \
struct event_type *cast_##event_type(const zmk_event_t *eh); \
struct event_type *as_##event_type(const zmk_event_t *eh); \
extern const struct zmk_event_type zmk_event_##event_type;
#define ZMK_EVENT_IMPL(event_type) \
@ -54,9 +53,9 @@ struct zmk_event_subscription {
ev->data = data; \
return ev; \
}; \
bool is_##event_type(const zmk_event_t *eh) { return eh->event == &zmk_event_##event_type; }; \
struct event_type *cast_##event_type(const zmk_event_t *eh) { \
return &((struct event_type##_event *)eh)->data; \
struct event_type *as_##event_type(const zmk_event_t *eh) { \
return (eh->event == &zmk_event_##event_type) ? &((struct event_type##_event *)eh)->data \
: NULL; \
};
#define ZMK_LISTENER(mod, cb) const struct zmk_listener zmk_listener_##mod = {.callback = cb};