Reflection: add KVisibility, KClass.visibility, KCallable.visibility

compiler/testData/codegen/box/reflection/modifiers/classVisibility.kt

@@ -0,0 +1,29 @@
+// WITH_REFLECT
+
+import kotlin.reflect.KClass
+import kotlin.reflect.KVisibility
+import kotlin.test.assertEquals
+
+class DefaultVisibilityClass
+public class PublicClass {
+    protected class ProtectedClass
+    fun getProtectedClass(): KClass<*> = ProtectedClass::class
+}
+internal class InternalClass
+private class PrivateClass
+
+fun box(): String {
+    assertEquals(KVisibility.PUBLIC, DefaultVisibilityClass::class.visibility)
+    assertEquals(KVisibility.PUBLIC, PublicClass::class.visibility)
+    assertEquals(KVisibility.PROTECTED, PublicClass().getProtectedClass().visibility)
+    assertEquals(KVisibility.INTERNAL, InternalClass::class.visibility)
+    assertEquals(KVisibility.PRIVATE, PrivateClass::class.visibility)
+
+    class Local
+    assertEquals(null, Local::class.visibility)
+
+    val anonymous = object {}
+    assertEquals(null, anonymous::class.visibility)
+
+    return "OK"
+}