[builtins] Migrate a bunch of Object builtins to C++.

src/js/v8natives.js

 // 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.
 
 (function(global, utils) {
 
 %CheckIsBootstrapping();
 
 // ----------------------------------------------------------------------------
 // Imports
@@ skipping 521 matching lines @@
     }
   }
   return true;
 }
 
 
 // ES6 9.1.6 [[DefineOwnProperty]](P, Desc)
 function DefineObjectProperty(obj, p, desc, should_throw) {
   var current_array = %GetOwnProperty_Legacy(obj, TO_NAME(p));
   var current = ConvertDescriptorArrayToDescriptor(current_array);
-  var extensible = %IsExtensible(obj);
+  var extensible = %object_is_extensible(obj);
 
   if (IS_UNDEFINED(current) && !extensible) {
     if (should_throw) {
       throw MakeTypeError(kDefineDisallowed, p);
     } else {
       return false;
     }
   }
 
   if (!IS_UNDEFINED(current)) {
@@ skipping 278 matching lines @@
     }
     for (var i = 0; i < names.length; i++) {
       DefineOwnProperty(obj, names[i], descriptors[i], true);
     }
     return obj;
   }
   return %ObjectDefineProperties(obj, properties);
 }
 
 
-// ES6 19.1.2.17
-function ObjectSealJS(obj) {
-  if (!IS_RECEIVER(obj)) return obj;
-  return %ObjectSeal(obj);
-}
-
-
-// ES6 19.1.2.5
-function ObjectFreezeJS(obj) {
-  if (!IS_RECEIVER(obj)) return obj;
-  return %ObjectFreeze(obj);
-}
-
-
-// ES6 19.1.2.15
-function ObjectPreventExtension(obj) {
-  if (!IS_RECEIVER(obj)) return obj;
-  return %PreventExtensions(obj);
-}
-
-
-// ES6 19.1.2.13
-function ObjectIsSealed(obj) {
-  if (!IS_RECEIVER(obj)) return true;
-  return %ObjectIsSealed(obj);
-}
-
-
-// ES6 19.1.2.12
-function ObjectIsFrozen(obj) {
-  if (!IS_RECEIVER(obj)) return true;
-  return %ObjectIsFrozen(obj);
-}
-
-
-// ES6 19.1.2.11
-function ObjectIsExtensible(obj) {
-  if (!IS_RECEIVER(obj)) return false;
-  return %IsExtensible(obj);
-}
-
-
 // ES6 B.2.2.1.1
 function ObjectGetProto() {
   return %_GetPrototype(TO_OBJECT(this));
 }
 
 
 // ES6 B.2.2.1.2
 function ObjectSetProto(proto) {
   CHECK_OBJECT_COERCIBLE(this, "Object.prototype.__proto__");
 
@@ skipping 37 matching lines @@
 ]);
 utils.InstallGetterSetter(GlobalObject.prototype, "__proto__", ObjectGetProto,
                     ObjectSetProto);
 
 // Set up non-enumerable functions in the Object object.
 utils.InstallFunctions(GlobalObject, DONT_ENUM, [
   // assign is added in bootstrapper.cc.
   "keys", ObjectKeys,
   "defineProperty", ObjectDefineProperty,
   "defineProperties", ObjectDefineProperties,
-  "freeze", ObjectFreezeJS,
   "getPrototypeOf", ObjectGetPrototypeOf,
   "setPrototypeOf", ObjectSetPrototypeOf,
   "getOwnPropertyDescriptor", ObjectGetOwnPropertyDescriptor,
   "getOwnPropertyNames", ObjectGetOwnPropertyNames,
   // getOwnPropertySymbols is added in symbol.js.
   "is", SameValue,  // ECMA-262, Edition 6, section 19.1.2.10
-  "isExtensible", ObjectIsExtensible,
-  "isFrozen", ObjectIsFrozen,
-  "isSealed", ObjectIsSealed,
-  "preventExtensions", ObjectPreventExtension,
-  "seal", ObjectSealJS
   // deliverChangeRecords, getNotifier, observe and unobserve are added
   // in object-observe.js.
 ]);
 
 
 // ----------------------------------------------------------------------------
 // Boolean
 
 function BooleanConstructor(x) {
   // TODO(bmeurer): Move this to toplevel.
@@ skipping 288 matching lines @@
 // Exports
 
 utils.Export(function(to) {
   to.GetIterator = GetIterator;
   to.GetMethod = GetMethod;
   to.IsFinite = GlobalIsFinite;
   to.IsNaN = GlobalIsNaN;
   to.NumberIsNaN = NumberIsNaN;
   to.ObjectDefineProperties = ObjectDefineProperties;
   to.ObjectDefineProperty = ObjectDefineProperty;
-  to.ObjectFreeze = ObjectFreezeJS;
   to.ObjectHasOwnProperty = ObjectHasOwnProperty;
-  to.ObjectIsFrozen = ObjectIsFrozen;
-  to.ObjectIsSealed = ObjectIsSealed;
   to.ObjectKeys = ObjectKeys;
 });
 
 %InstallToContext([
   "object_value_of", ObjectValueOf,
 ]);
 
 })