diff options
Diffstat (limited to 'src/main/kotlin/me/bush/illnamethislater/CancelledState.kt')
| -rw-r--r-- | src/main/kotlin/me/bush/illnamethislater/CancelledState.kt | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/main/kotlin/me/bush/illnamethislater/CancelledState.kt b/src/main/kotlin/me/bush/illnamethislater/CancelledState.kt index 80022ba..d6ff39d 100644 --- a/src/main/kotlin/me/bush/illnamethislater/CancelledState.kt +++ b/src/main/kotlin/me/bush/illnamethislater/CancelledState.kt @@ -19,12 +19,14 @@ internal fun interface CancelledState { /** * Returns whether [event] is cancelled or not. [event] should only ever be of the type - * that was passed to [CancelledState.of], or this will cause an error. + * that was passed to [CancelledState.of], **or this will crash.** */ fun isCancelled(event: Any): Boolean companion object { - private val UNSAFE = Unsafe::class.declaredMembers.single { it.name == "theUnsafe" }.handleCall() as Unsafe + private val UNSAFE = runCatching { + Unsafe::class.declaredMembers.single { it.name == "theUnsafe" }.handleCall() as Unsafe + }.getOrNull() // soy jvm private val CANCELLED_NAMES = arrayOf("canceled", "cancelled") private val NOT_CANCELLABLE = CancelledState { false } private val OFFSETS = hashMapOf<KClass<*>, Long>() @@ -40,7 +42,7 @@ internal fun interface CancelledState { // Find a field named "cancelled" or "canceled" that is a boolean, and has a backing field. type.allMembers.filter { it.name in CANCELLED_NAMES && it.returnType == typeOf<Boolean>() } .filterIsInstance<KMutableProperty<*>>().filter { it.javaField != null }.toList().let { - if (it.isEmpty()) return NOT_CANCELLABLE + if (it.isEmpty() || UNSAFE == null) return NOT_CANCELLABLE if (it.size != 1) config.logger.warn("Multiple possible cancel fields found for event type $type") it[0].javaField!!.let { field -> if (Modifier.isStatic(field.modifiers)) OFFSETS[type] = UNSAFE.staticFieldOffset(field) |