[strong] Implement strong mode restrictions on property access

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 1144 matching lines @@
       isolate, object, handle(isolate->context()->native_context(), isolate));
 }
 
 
 bool Object::HasSpecificClassOf(String* name) {
   return this->IsJSObject() && (JSObject::cast(this)->class_name() == name);
 }
 
 
 MaybeHandle<Object> Object::GetProperty(Handle<Object> object,
-                                        Handle<Name> name) {
+                                        Handle<Name> name, Strength strength) {
   LookupIterator it(object, name);
-  return GetProperty(&it);
+  return GetProperty(&it, strength);
 }
 
 
-MaybeHandle<Object> Object::GetElement(Isolate* isolate,
-                                       Handle<Object> object,
-                                       uint32_t index) {
+MaybeHandle<Object> Object::GetElement(Isolate* isolate, Handle<Object> object,
+                                       uint32_t index, Strength strength) {
   LookupIterator it(isolate, object, index);
-  return GetProperty(&it);
+  return GetProperty(&it, strength);
 }
 
 
 Handle<Object> Object::GetPrototypeSkipHiddenPrototypes(
     Isolate* isolate, Handle<Object> receiver) {
   PrototypeIterator iter(isolate, receiver);
   while (!iter.IsAtEnd(PrototypeIterator::END_AT_NON_HIDDEN)) {
     if (PrototypeIterator::GetCurrent(iter)->IsJSProxy()) {
       return PrototypeIterator::GetCurrent(iter);
     }
     iter.Advance();
   }
   return PrototypeIterator::GetCurrent(iter);
 }
 
 
-MaybeHandle<Object> Object::GetProperty(Isolate* isolate,
-                                        Handle<Object> object,
-                                        const char* name) {
+MaybeHandle<Object> Object::GetProperty(Isolate* isolate, Handle<Object> object,
+                                        const char* name, Strength strength) {
   Handle<String> str = isolate->factory()->InternalizeUtf8String(name);
-  return GetProperty(object, str);
+  return GetProperty(object, str, strength);
 }
 
 
 MaybeHandle<Object> JSProxy::SetElementWithHandler(Handle<JSProxy> proxy,
                                                    Handle<JSReceiver> receiver,
                                                    uint32_t index,
                                                    Handle<Object> value,
                                                    LanguageMode language_mode) {
   Isolate* isolate = proxy->GetIsolate();
   Handle<String> name = isolate->factory()->Uint32ToString(index);
@@ skipping 5387 matching lines @@
   if (HasHashCode()) return this;
   String* canonical = String::cast(READ_FIELD(this, kHashFieldSlot));
   DCHECK(canonical->IsInternalizedString());
   DCHECK(SlowEquals(canonical));
   DCHECK(canonical->HasHashCode());
   return canonical;
 }
 
 
 MaybeHandle<Object> Object::GetPropertyOrElement(Handle<Object> object,
-                                                 Handle<Name> name) {
+                                                 Handle<Name> name,
+                                                 Strength strength) {
   uint32_t index;
   LookupIterator it = name->AsArrayIndex(&index)
                           ? LookupIterator(name->GetIsolate(), object, index)
                           : LookupIterator(object, name);
-  return GetProperty(&it);
+  return GetProperty(&it, strength);
 }
 
 
 Maybe<bool> JSReceiver::HasProperty(Handle<JSReceiver> object,
                                     Handle<Name> name) {
   // Call the "has" trap on proxies.
   if (object->IsJSProxy()) {
     Handle<JSProxy> proxy = Handle<JSProxy>::cast(object);
     return JSProxy::HasPropertyWithHandler(proxy, name);
   }
@@ skipping 755 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_