Move hash code from hidden string to a private symbol

src/weak-collection.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) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 25 matching lines @@
   }
 }
 
 
 function WeakMapGet(key) {
   if (!IS_WEAKMAP(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'WeakMap.prototype.get', this);
   }
   if (!IS_SPEC_OBJECT(key)) return UNDEFINED;
-  return %WeakCollectionGet(this, key);
+  var hash = $getExistingHash(key);
+  if (IS_UNDEFINED(hash)) return UNDEFINED;
+  return %WeakCollectionGet(this, key, hash);
 }
 
 
 function WeakMapSet(key, value) {
   if (!IS_WEAKMAP(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'WeakMap.prototype.set', this);
   }
   if (!IS_SPEC_OBJECT(key)) throw MakeTypeError(kInvalidWeakMapKey);
-  return %WeakCollectionSet(this, key, value);
+  return %WeakCollectionSet(this, key, value, $getHash(key));
 }
 
 
 function WeakMapHas(key) {
   if (!IS_WEAKMAP(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'WeakMap.prototype.has', this);
   }
   if (!IS_SPEC_OBJECT(key)) return false;
-  return %WeakCollectionHas(this, key);
+  var hash = $getExistingHash(key);
+  if (IS_UNDEFINED(hash)) return false;
+  return %WeakCollectionHas(this, key, hash);
 }
 
 
 function WeakMapDelete(key) {
   if (!IS_WEAKMAP(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'WeakMap.prototype.delete', this);
   }
   if (!IS_SPEC_OBJECT(key)) return false;
-  return %WeakCollectionDelete(this, key);
+  var hash = $getExistingHash(key);
+  if (IS_UNDEFINED(hash)) return false;
+  return %WeakCollectionDelete(this, key, hash);
 }
 
 
 // -------------------------------------------------------------------
 
 %SetCode(GlobalWeakMap, WeakMapConstructor);
 %FunctionSetLength(GlobalWeakMap, 0);
 %FunctionSetPrototype(GlobalWeakMap, new GlobalObject());
 %AddNamedProperty(GlobalWeakMap.prototype, "constructor", GlobalWeakMap,
                   DONT_ENUM);
@@ skipping 29 matching lines @@
   }
 }
 
 
 function WeakSetAdd(value) {
   if (!IS_WEAKSET(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'WeakSet.prototype.add', this);
   }
   if (!IS_SPEC_OBJECT(value)) throw MakeTypeError(kInvalidWeakSetValue);
-  return %WeakCollectionSet(this, value, true);
+  return %WeakCollectionSet(this, value, true, $getHash(value));
 }
 
 
 function WeakSetHas(value) {
   if (!IS_WEAKSET(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'WeakSet.prototype.has', this);
   }
   if (!IS_SPEC_OBJECT(value)) return false;
-  return %WeakCollectionHas(this, value);
+  var hash = $getExistingHash(value);
+  if (IS_UNDEFINED(hash)) return false;
+  return %WeakCollectionHas(this, value, hash);
 }
 
 
 function WeakSetDelete(value) {
   if (!IS_WEAKSET(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'WeakSet.prototype.delete', this);
   }
   if (!IS_SPEC_OBJECT(value)) return false;
-  return %WeakCollectionDelete(this, value);
+  var hash = $getExistingHash(value);
+  if (IS_UNDEFINED(hash)) return false;
+  return %WeakCollectionDelete(this, value, hash);
 }
 
 
 // -------------------------------------------------------------------
 
 %SetCode(GlobalWeakSet, WeakSetConstructor);
 %FunctionSetLength(GlobalWeakSet, 0);
 %FunctionSetPrototype(GlobalWeakSet, new GlobalObject());
 %AddNamedProperty(GlobalWeakSet.prototype, "constructor", GlobalWeakSet,
                  DONT_ENUM);
 %AddNamedProperty(GlobalWeakSet.prototype, symbolToStringTag, "WeakSet",
                   DONT_ENUM | READ_ONLY);
 
 // Set up the non-enumerable functions on the WeakSet prototype object.
 utils.InstallFunctions(GlobalWeakSet.prototype, DONT_ENUM, [
   "add", WeakSetAdd,
   "has", WeakSetHas,
   "delete", WeakSetDelete
 ]);
 
 })