Index: src/harmony-object.js |
diff --git a/src/harmony-object.js b/src/harmony-object.js |
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+// Copyright 2014 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. |
+// |
+ |
+var $objectAssign; |
arv (Not doing code reviews)
2015/05/06 15:35:48
This is never used. I think the idea is to only "e
caitp (gmail)
2015/05/06 15:40:26
Acknowledged.
|
+ |
+(function() { |
+ |
+"use strict"; |
+ |
+%CheckIsBootstrapping(); |
+ |
+var GlobalObject = global.Object; |
+ |
+// ES6, draft 04-03-15, section 19.1.2.1 |
+function ObjectAssign(target, sources) { |
+ var to = TO_OBJECT_INLINE(target); |
+ var argsLen = %_ArgumentsLength(); |
+ if (argsLen < 2) return to; |
+ |
+ for (var i = 1; i < argsLen; ++i) { |
+ var nextSource = %_Arguments(i); |
+ if (IS_NULL_OR_UNDEFINED(nextSource)) { |
+ continue; |
+ } |
+ |
+ var from = TO_OBJECT_INLINE(nextSource); |
+ var keys = $ownPropertyKeys(from); |
+ var len = keys.length; |
+ |
+ for (var j = 0; j < len; ++j) { |
+ var key = keys[j]; |
+ if (%_CallFunction(from, key, $propertyIsEnumerable)) { |
arv (Not doing code reviews)
2015/05/06 15:35:48
I wonder if this does anything extra over [[GetOwn
caitp (gmail)
2015/05/06 15:40:26
I can't remember why went with this, maybe [[GetOw
caitp (gmail)
2015/05/06 15:42:59
Wait no, $propertyIsEnumerable looks like it's a b
arv (Not doing code reviews)
2015/05/06 15:44:34
Maybe we could have something even lower level her
|
+ var propValue = from[key]; |
+ to[key] = propValue; |
+ } |
+ } |
+ } |
+ return to; |
+} |
+ |
+// Set up non-enumerable functions on the Object object. |
+$installFunctions(GlobalObject, DONT_ENUM, [ |
+ "assign", ObjectAssign |
+]); |
+ |
+$objectAssign = ObjectAssign; |
+ |
+})(); |