c_run_key_action(): Change signature to take a `Trigger`

Our new `Trigger` type groups together the two arguments this function
used to take into a single type.

3 files changed, 15 insertions, 7 deletions

diff --git a/dome_key_map.h b/dome_key_map.h
index 6066da0..f3c3f68 100644
--- a/dome_key_map.h
+++ b/dome_key_map.h
@@ -22,4 +22,9 @@ typedef struct {
   const MapKind *kind;
 } CKeyActionResult;
 
-const CKeyActionResult *c_run_key_action(const HeadphoneButton *trigger, size_t length);
+typedef struct {
+  const HeadphoneButton *buttons;
+  size_t length;
+} Trigger;
+
+const CKeyActionResult *c_run_key_action(Trigger trigger);
diff --git a/includer.c b/includer.c
index 92a48cd..2c89064 100644
--- a/includer.c
+++ b/includer.c
@@ -4,8 +4,12 @@
 #define SIZE 2
 
 int main() {
-	HeadphoneButton trigger[SIZE] = {HeadphoneButton_Play, HeadphoneButton_Down};
-	const CKeyActionResult *result = c_run_key_action(trigger, SIZE);
+	HeadphoneButton buttons[SIZE] = {HeadphoneButton_Play, HeadphoneButton_Down};
+	Trigger trigger = {
+		.buttons = buttons,
+		.length = SIZE
+	};
+	const CKeyActionResult *result = c_run_key_action(trigger);
 	printf("%s", result->action);
 
 	return 0;
diff --git a/src/cocoa_bridge.rs b/src/cocoa_bridge.rs
index 12b2b62..12b0095 100644
--- a/src/cocoa_bridge.rs
+++ b/src/cocoa_bridge.rs
@@ -61,13 +61,12 @@ pub struct CKeyActionResult {
 
 #[no_mangle]
 pub extern "C" fn c_run_key_action(
-    trigger: *const HeadphoneButton,
-    length: size_t,
+    trigger: Trigger,
 ) -> *const CKeyActionResult {
     let trigger = unsafe {
-        assert!(!trigger.is_null());
+        assert!(!trigger.buttons.is_null());
 
-        slice::from_raw_parts(trigger, length as usize)
+        slice::from_raw_parts(trigger.buttons, trigger.length as usize)
     };
 
     let result = match run_key_action(trigger) {