Introduce v8::Object::CreateDataProperty

src/objects.cc

 // Copyright 2013 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 <iomanip>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 5725 matching lines @@
     RETURN_ON_EXCEPTION(
         isolate,
         EnqueueChangeRecord(object, "preventExtensions", Handle<Name>(),
                             isolate->factory()->the_hole_value()),
         Object);
   }
   return object;
 }
 
 
+bool JSObject::IsExtensible() {
+  if (IsJSGlobalProxy()) {
+    PrototypeIterator iter(GetIsolate(), this);
+    if (iter.IsAtEnd()) return false;
+    DCHECK(iter.GetCurrent()->IsJSGlobalObject());
+    return JSObject::cast(iter.GetCurrent())->map()->is_extensible();
+  }
+  return map()->is_extensible();
+}
+
+
 Handle<SeededNumberDictionary> JSObject::GetNormalizedElementDictionary(
     Handle<JSObject> object) {
   DCHECK(!object->elements()->IsDictionary());
   Isolate* isolate = object->GetIsolate();
   int length = object->IsJSArray()
                    ? Smi::cast(Handle<JSArray>::cast(object)->length())->value()
                    : object->elements()->length();
   if (length > 0) {
     int capacity = 0;
     int used = 0;
@@ skipping 11572 matching lines @@
 void PropertyCell::SetValueWithInvalidation(Handle<PropertyCell> cell,
                                             Handle<Object> new_value) {
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 } }  // namespace v8::internal