Arguments object has @@iterator

src/runtime.cc

 // 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.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 6072 matching lines @@
 
   // Try to convert the key to an index. If successful and within
   // index return the the argument from the frame.
   uint32_t index;
   if (raw_key->ToArrayIndex(&index) && index < n) {
     return frame->GetParameter(index);
   }
 
   HandleScope scope(isolate);
   if (raw_key->IsSymbol()) {
+    Handle<Symbol> symbol = Handle<Symbol>::cast(raw_key);
+    if (FLAG_harmony_iteration &&
+        symbol->Equals(isolate->native_context()->iterator_symbol())) {
+      return isolate->native_context()->array_values_iterator();
+    }
     // Lookup in the initial Object.prototype object.
     Handle<Object> result;
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
         isolate, result,
         Object::GetProperty(isolate->initial_object_prototype(),
                             Handle<Symbol>::cast(raw_key)));
     return *result;
   }
 
   // Convert the key to a string.
@@ skipping 31 matching lines @@
 
   // Lookup in the initial Object.prototype object.
   Handle<Object> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, result,
       Object::GetProperty(isolate->initial_object_prototype(), key));
   return *result;
 }
 
 
+RUNTIME_FUNCTION(Runtime_GetArgumentsBoilerplateObject) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_SMI_ARG_CHECKED(index, 0);
+  RUNTIME_ASSERT(isolate->bootstrapper()->IsActive());
+
+  switch (index) {
+    case 0:
+      return isolate->native_context()->sloppy_arguments_boilerplate();
+    case 1:
+      return isolate->native_context()->aliased_arguments_boilerplate();
+    case 2:
+      return isolate->native_context()->strict_arguments_boilerplate();
+    default:
+      return isolate->ThrowIllegalOperation();
+  }
+}
+
+
 RUNTIME_FUNCTION(Runtime_ToFastProperties) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, object, 0);
   if (object->IsJSObject() && !object->IsGlobalObject()) {
     JSObject::TransformToFastProperties(Handle<JSObject>::cast(object), 0);
   }
   return *object;
 }
 
@@ skipping 9057 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal