[builtins] implement Array.prototype[@@iterator] in TFJ builtins

src/objects-inl.h

 // Copyright 2012 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 672 matching lines @@
   return map()->instance_type() >= FIRST_JS_RECEIVER_TYPE;
 }
 
 bool HeapObject::IsJSObject() const {
   STATIC_ASSERT(LAST_JS_OBJECT_TYPE == LAST_TYPE);
   return map()->IsJSObjectMap();
 }
 
 bool HeapObject::IsJSProxy() const { return map()->IsJSProxyMap(); }
 
+bool HeapObject::IsJSArrayIterator() const {
+  InstanceType instance_type = map()->instance_type();
+  return (instance_type >= FIRST_ARRAY_ITERATOR_TYPE &&
+          instance_type <= LAST_ARRAY_ITERATOR_TYPE);
+}
+
 TYPE_CHECKER(JSSet, JS_SET_TYPE)
 TYPE_CHECKER(JSMap, JS_MAP_TYPE)
 TYPE_CHECKER(JSSetIterator, JS_SET_ITERATOR_TYPE)
 TYPE_CHECKER(JSMapIterator, JS_MAP_ITERATOR_TYPE)
 TYPE_CHECKER(JSWeakMap, JS_WEAK_MAP_TYPE)
 TYPE_CHECKER(JSWeakSet, JS_WEAK_SET_TYPE)
 TYPE_CHECKER(JSContextExtensionObject, JS_CONTEXT_EXTENSION_OBJECT_TYPE)
 TYPE_CHECKER(Map, MAP_TYPE)
 TYPE_CHECKER(FixedDoubleArray, FIXED_DOUBLE_ARRAY_TYPE)
 TYPE_CHECKER(WeakFixedArray, FIXED_ARRAY_TYPE)
@@ skipping 2628 matching lines @@
 CAST_ACCESSOR(JSMessageObject)
 CAST_ACCESSOR(JSModuleNamespace)
 CAST_ACCESSOR(JSFixedArrayIterator)
 CAST_ACCESSOR(JSObject)
 CAST_ACCESSOR(JSProxy)
 CAST_ACCESSOR(JSReceiver)
 CAST_ACCESSOR(JSRegExp)
 CAST_ACCESSOR(JSSet)
 CAST_ACCESSOR(JSSetIterator)
 CAST_ACCESSOR(JSStringIterator)
+CAST_ACCESSOR(JSArrayIterator)
 CAST_ACCESSOR(JSTypedArray)
 CAST_ACCESSOR(JSValue)
 CAST_ACCESSOR(JSWeakCollection)
 CAST_ACCESSOR(JSWeakMap)
 CAST_ACCESSOR(JSWeakSet)
 CAST_ACCESSOR(LayoutDescriptor)
 CAST_ACCESSOR(Map)
 CAST_ACCESSOR(ModuleInfoEntry)
 CAST_ACCESSOR(ModuleInfo)
 CAST_ACCESSOR(Name)
@@ skipping 4999 matching lines @@
     entry_storage->set(0, *key, SKIP_WRITE_BARRIER);
     entry_storage->set(1, *value, SKIP_WRITE_BARRIER);
   }
   return isolate->factory()->NewJSArrayWithElements(entry_storage,
                                                     FAST_ELEMENTS, 2);
 }
 
 ACCESSORS(JSIteratorResult, value, Object, kValueOffset)
 ACCESSORS(JSIteratorResult, done, Object, kDoneOffset)
 
+ACCESSORS(JSArrayIterator, object, Object, kIteratedObjectOffset)
+ACCESSORS(JSArrayIterator, index, Object, kNextIndexOffset)
+ACCESSORS(JSArrayIterator, object_map, Object, kIteratedObjectMapOffset)
+
 ACCESSORS(JSStringIterator, string, String, kStringOffset)
 SMI_ACCESSORS(JSStringIterator, index, kNextIndexOffset)
 
 #undef TYPE_CHECKER
 #undef CAST_ACCESSOR
 #undef INT_ACCESSORS
 #undef ACCESSORS
 #undef SMI_ACCESSORS
 #undef SYNCHRONIZED_SMI_ACCESSORS
 #undef NOBARRIER_SMI_ACCESSORS
@@ skipping 33 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_