Install iterator meta objects via utils object.

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
 
 var FLAG_harmony_tostring;
 var GlobalArray = global.Array;
 var GlobalBoolean = global.Boolean;
 var GlobalFunction = global.Function;
 var GlobalNumber = global.Number;
 var GlobalObject = global.Object;
 var InternalArray = utils.InternalArray;
 var iteratorSymbol = utils.ImportNow("iterator_symbol");
 var MathAbs;
 var NaN = %GetRootNaN();
 var ObserveBeginPerformSplice;
 var ObserveEndPerformSplice;
 var ObserveEnqueueSpliceRecord;
 var ProxyDelegateCallAndConstruct;
 var ProxyDerivedHasOwnTrap;
 var ProxyDerivedKeysTrap;
+var SameValue = utils.ImportNow("SameValue");
 var StringIndexOf;
 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
 
 utils.Import(function(from) {
   MathAbs = from.MathAbs;
   ObserveBeginPerformSplice = from.ObserveBeginPerformSplice;
   ObserveEndPerformSplice = from.ObserveEndPerformSplice;
   ObserveEnqueueSpliceRecord = from.ObserveEnqueueSpliceRecord;
   StringIndexOf = from.StringIndexOf;
 });
@@ skipping 608 matching lines @@
     } else {
       return false;
     }
   }
 
   if (!IS_UNDEFINED(current)) {
     // Step 5 and 6
     if ((IsGenericDescriptor(desc) ||
          IsDataDescriptor(desc) == IsDataDescriptor(current)) &&
         (!desc.hasEnumerable() ||
-         $sameValue(desc.isEnumerable(), current.isEnumerable())) &&
+         SameValue(desc.isEnumerable(), current.isEnumerable())) &&
         (!desc.hasConfigurable() ||
-         $sameValue(desc.isConfigurable(), current.isConfigurable())) &&
+         SameValue(desc.isConfigurable(), current.isConfigurable())) &&
         (!desc.hasWritable() ||
-         $sameValue(desc.isWritable(), current.isWritable())) &&
+         SameValue(desc.isWritable(), current.isWritable())) &&
         (!desc.hasValue() ||
-         $sameValue(desc.getValue(), current.getValue())) &&
+         SameValue(desc.getValue(), current.getValue())) &&
         (!desc.hasGetter() ||
-         $sameValue(desc.getGet(), current.getGet())) &&
+         SameValue(desc.getGet(), current.getGet())) &&
         (!desc.hasSetter() ||
-         $sameValue(desc.getSet(), current.getSet()))) {
+         SameValue(desc.getSet(), current.getSet()))) {
       return true;
     }
     if (!current.isConfigurable()) {
       // Step 7
       if (desc.isConfigurable() ||
           (desc.hasEnumerable() &&
            desc.isEnumerable() != current.isEnumerable())) {
         if (should_throw) {
           throw MakeTypeError(kRedefineDisallowed, p);
         } else {
@@ skipping 18 matching lines @@
               if (should_throw) {
                 throw currentIsWritable
                     ? MakeTypeError(kStrongRedefineDisallowed, obj, p)
                     : MakeTypeError(kRedefineDisallowed, p);
               } else {
                 return false;
               }
             }
           }
           if (!currentIsWritable && desc.hasValue() &&
-              !$sameValue(desc.getValue(), current.getValue())) {
+              !SameValue(desc.getValue(), current.getValue())) {
             if (should_throw) {
               throw MakeTypeError(kRedefineDisallowed, p);
             } else {
               return false;
             }
           }
         }
         // Step 11
         if (IsAccessorDescriptor(desc) && IsAccessorDescriptor(current)) {
           if (desc.hasSetter() &&
-              !$sameValue(desc.getSet(), current.getSet())) {
+              !SameValue(desc.getSet(), current.getSet())) {
             if (should_throw) {
               throw MakeTypeError(kRedefineDisallowed, p);
             } else {
               return false;
             }
           }
-          if (desc.hasGetter() && !$sameValue(desc.getGet(),current.getGet())) {
+          if (desc.hasGetter() && !SameValue(desc.getGet(),current.getGet())) {
             if (should_throw) {
               throw MakeTypeError(kRedefineDisallowed, p);
             } else {
               return false;
             }
           }
         }
       }
     }
   }
@@ skipping 518 matching lines @@
 // ES5 section 15.2.3.13
 function ObjectIsExtensible(obj) {
   if (!IS_SPEC_OBJECT(obj)) return false;
   if (%_IsJSProxy(obj)) {
     return true;
   }
   return %IsExtensible(obj);
 }
 
 
-// ECMA-262, Edition 6, section 19.1.2.10
-function ObjectIs(obj1, obj2) {
-  return $sameValue(obj1, obj2);
-}
-
-
 // ECMA-262, Edition 6, section 19.1.2.1
 function ObjectAssign(target, sources) {
   // TODO(bmeurer): Move this to toplevel.
   "use strict";
   var to = TO_OBJECT(target);
   var argsLen = %_ArgumentsLength();
   if (argsLen < 2) return to;
 
   for (var i = 1; i < argsLen; ++i) {
     var nextSource = %_Arguments(i);
@@ skipping 75 matching lines @@
   "keys", ObjectKeys,
   "create", ObjectCreate,
   "defineProperty", ObjectDefineProperty,
   "defineProperties", ObjectDefineProperties,
   "freeze", ObjectFreezeJS,
   "getPrototypeOf", ObjectGetPrototypeOf,
   "setPrototypeOf", ObjectSetPrototypeOf,
   "getOwnPropertyDescriptor", ObjectGetOwnPropertyDescriptor,
   "getOwnPropertyNames", ObjectGetOwnPropertyNames,
   // getOwnPropertySymbols is added in symbol.js.
-  "is", ObjectIs,
+  "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.
 ]);
 
 
@@ skipping 474 matching lines @@
 %InstallToContext([
   "global_eval_fun", GlobalEval,
   "object_value_of", ObjectValueOf,
   "object_to_string", ObjectToString,
   "object_define_own_property", DefineOwnPropertyFromAPI,
   "object_get_own_property_descriptor", ObjectGetOwnPropertyDescriptor,
   "to_complete_property_descriptor", ToCompletePropertyDescriptor,
 ]);
 
 })