JS/RTTI: fixed is-check on nullable reified parameters

#KT-7016 fixed
    #KT-8012 fixed

js/js.translator/testData/kotlin_lib_ecma5.js

@@ -533,23 +533,27 @@ var Kotlin = {};
         Object.defineProperty(Kotlin.modules, id, {value: declaration});
     };
 
-    function defineInlineFunction(tag, fun) {
+    Kotlin.defineInlineFunction = function(tag, fun) {
         return fun;
-    }
+    };
 
-    Kotlin.defineInlineFunction = defineInlineFunction;
-
-    Kotlin.isTypeOf = defineInlineFunction('stdlib.kotlin.isTypeOf', function (type) {
+    Kotlin.isTypeOf = function(type) {
         return function (object) {
             return typeof object === type;
         }
-    });
+    };
 
-    Kotlin.isInstanceOf = defineInlineFunction('stdlib.kotlin.isInstanceOf', function (klass) {
+    Kotlin.isInstanceOf = function (klass) {
         return function (object) {
             return Kotlin.isType(object, klass);
         }
-    });
+    };
+
+    Kotlin.orNull = function (fn) {
+        return function (object) {
+            return object == null || fn(object);
+        }
+    };
 
     Kotlin.kotlinModuleMetadata = function (abiVersion, moduleName, data) {
     };

js/js.translator/testData/reified/_commonFiles/isInstance.kt

@@ -1,4 +1,4 @@
 package foo
 
-inline fun <reified T> isInstance(x: Any): Boolean =
-        x is T
+inline fun <reified T> isInstance(x: Any?): Boolean =
+        x is T

js/js.translator/testData/reified/cases/isBool.kt

@@ -7,5 +7,9 @@ fun box(): String {
     assertEquals(true, isInstance<Boolean>(false))
     assertEquals(false, isInstance<Boolean>("true"))
 
+    assertEquals(true, isInstance<Boolean?>(true), "isInstance<Boolean?>(true)")
+    assertEquals(true, isInstance<Boolean?>(null), "isInstance<Boolean?>(null)")
+    assertEquals(false, isInstance<Boolean?>("true"), "isInstance<Boolean?>(\"true\")")
+
     return "OK"
 }

js/js.translator/testData/reified/cases/isChar.kt

@@ -7,5 +7,9 @@ fun box(): String {
     assertEquals(false, isInstance<Char>(""))
     assertEquals(false, isInstance<Char>("cc"))
 
+    assertEquals(true, isInstance<Char?>('c'), "isInstance<Char?>('c')")
+    assertEquals(true, isInstance<Char?>(null), "isInstance<Char?>(null)")
+    assertEquals(false, isInstance<Char?>("cc"), "isInstance<Char?>(\"cc\")")
+
     return "OK"
 }

js/js.translator/testData/reified/cases/isClass.kt

@@ -17,5 +17,9 @@ fun box(): String {
     assertEquals(true, isInstance<D>(D()))
     assertEquals(true, isInstance<C>(D()))
 
+    assertEquals(true, isInstance<D?>(D()), "isInstance<D?>(D())")
+    assertEquals(true, isInstance<D?>(null), "isInstance<D?>(null)")
+    assertEquals(false, isInstance<D?>(C()), "isInstance<D?>(C())")
+
     return "OK"
 }

js/js.translator/testData/reified/cases/isNumber.kt

@@ -15,5 +15,9 @@ fun box(): String {
     assertEquals(true, isInstance<Number>(0.0))
     assertEquals(false, isInstance<Number>("0"))
 
+    assertEquals(true, isInstance<Int?>(0), "isInstance<Int?>(0)")
+    assertEquals(true, isInstance<Int?>(null), "isInstance<Int?>(null)")
+    assertEquals(false, isInstance<Int?>(true), "isInstance<Int?>(true)")
+
     return "OK"
 }

js/js.translator/testData/reified/cases/isString.kt

@@ -6,5 +6,9 @@ fun box(): String {
     assertEquals(true, isInstance<String>(""))
     assertEquals(true, isInstance<String>("a"))
 
+    assertEquals(true, isInstance<String?>(""), "isInstance<String?>(\"\")")
+    assertEquals(true, isInstance<String?>(null), "isInstance<String?>(null)")
+    assertEquals(false, isInstance<String?>(10), "isInstance<String?>(10)")
+
     return "OK"
 }