Minor, simplify KProperty.accessible

core/reflection.jvm/src/kotlin/reflect/jvm/properties.kt

@@ -17,8 +17,8 @@
 package kotlin.reflect.jvm
 
 import kotlin.reflect.KProperty
-import kotlin.reflect.jvm.internal.KProperty1Impl
+import kotlin.reflect.jvm.internal.KMutablePropertyImpl
-import kotlin.reflect.jvm.internal.KMutableProperty1Impl
+import kotlin.reflect.jvm.internal.KPropertyImpl
 
 /**
  * Provides a way to suppress JVM access checks for a property.
@@ -34,29 +34,27 @@ import kotlin.reflect.jvm.internal.KMutableProperty1Impl
 public var <R> KProperty<R>.accessible: Boolean
         get() {
             return when (this) {
-                is KMutableProperty1Impl<*, R> ->
+                is KMutablePropertyImpl<R> ->
                         javaField?.isAccessible() ?: true &&
                         javaGetter?.isAccessible() ?: true &&
                         javaSetter?.isAccessible() ?: true
-                is KProperty1Impl<*, R> ->
+                is KPropertyImpl<R> ->
                         javaField?.isAccessible() ?: true &&
                         javaGetter?.isAccessible() ?: true
-                else -> {
+                else -> throw UnsupportedOperationException("Unknown property: $this ($javaClass)")
-                    // Non-member properties always have public visibility on JVM, thus accessible has no effect on them
-                    true
-                }
             }
         }
         set(value) {
             when (this) {
-                is KMutableProperty1Impl<*, R> -> {
+                is KMutablePropertyImpl<R> -> {
                     javaField?.setAccessible(value)
                     javaGetter?.setAccessible(value)
                     javaSetter?.setAccessible(value)
                 }
-                is KProperty1Impl<*, R> -> {
+                is KPropertyImpl<R> -> {
                     javaField?.setAccessible(value)
                     javaGetter?.setAccessible(value)
                 }
+                else -> throw UnsupportedOperationException("Unknown property: $this ($javaClass)")
             }
         }