Adding template parameter to PrototypeIterator GetCurrent for casting

src/runtime/runtime-array.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/conversions-inl.h"
 #include "src/elements.h"
 #include "src/factory.h"
@@ skipping 185 matching lines @@
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, array, 0);
   CONVERT_NUMBER_CHECKED(uint32_t, length, Uint32, args[1]);
   if (array->elements()->IsDictionary()) {
     Handle<FixedArray> keys = isolate->factory()->empty_fixed_array();
     for (PrototypeIterator iter(isolate, array,
                                 PrototypeIterator::START_AT_RECEIVER);
          !iter.IsAtEnd(); iter.Advance()) {
       if (PrototypeIterator::GetCurrent(iter)->IsJSProxy() ||
-          JSObject::cast(*PrototypeIterator::GetCurrent(iter))
+          PrototypeIterator::GetCurrent<JSObject>(iter)
               ->HasIndexedInterceptor()) {
         // Bail out if we find a proxy or interceptor, likely not worth
         // collecting keys in that case.
         return *isolate->factory()->NewNumberFromUint(length);
       }
-      Handle<JSObject> current =
-          Handle<JSObject>::cast(PrototypeIterator::GetCurrent(iter));
+      Handle<JSObject> current = PrototypeIterator::GetCurrent<JSObject>(iter);
       Handle<FixedArray> current_keys =
           isolate->factory()->NewFixedArray(current->NumberOfOwnElements(NONE));
       current->GetOwnElementKeys(*current_keys, NONE);
       ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
           isolate, keys, FixedArray::UnionOfKeys(keys, current_keys));
     }
     // Erase any keys >= length.
     // TODO(adamk): Remove this step when the contract of %GetArrayKeys
     // is changed to let this happen on the JS side.
     for (int i = 0; i < keys->length(); i++) {
@@ skipping 223 matching lines @@
 RUNTIME_FUNCTION(Runtime_HasComplexElements) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, array, 0);
   for (PrototypeIterator iter(isolate, array,
                               PrototypeIterator::START_AT_RECEIVER);
        !iter.IsAtEnd(); iter.Advance()) {
     if (PrototypeIterator::GetCurrent(iter)->IsJSProxy()) {
       return isolate->heap()->true_value();
     }
-    Handle<JSObject> current =
-        Handle<JSObject>::cast(PrototypeIterator::GetCurrent(iter));
+    Handle<JSObject> current = PrototypeIterator::GetCurrent<JSObject>(iter);
     if (current->HasIndexedInterceptor()) {
       return isolate->heap()->true_value();
     }
     if (!current->HasDictionaryElements()) continue;
     if (current->element_dictionary()->HasComplexElements()) {
       return isolate->heap()->true_value();
     }
   }
   return isolate->heap()->false_value();
 }
@@ skipping 24 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_FastOneByteArrayJoin) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 2);
   // Returning undefined means that this fast path fails and one has to resort
   // to a slow path.
   return isolate->heap()->undefined_value();
 }
 }  // namespace internal
 }  // namespace v8