Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
FPIIM-449
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/js/proxy.js b/src/js/proxy.js
new file mode 100644
index 0000000..842bac0
--- /dev/null
+++ b/src/js/proxy.js
@@ -0,0 +1,69 @@
+// Copyright 2015 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();
+
+// ----------------------------------------------------------------------------
+// Imports
+//
+var GlobalProxy = global.Proxy;
+var MakeTypeError;
+
+utils.Import(function(from) {
+ MakeTypeError = from.MakeTypeError;
+});
+
+//----------------------------------------------------------------------------
+
+function ProxyCreateRevocable(target, handler) {
+ var p = new GlobalProxy(target, handler);
+ return {proxy: p, revoke: () => %JSProxyRevoke(p)};
+}
+
+// -------------------------------------------------------------------
+// Proxy Builtins
+
+// Implements part of ES6 9.5.11 Proxy.[[Enumerate]]:
+// Call the trap, which should return an iterator, exhaust the iterator,
+// and return an array containing the values.
+function ProxyEnumerate(trap, handler, target) {
+ // 7. Let trapResult be ? Call(trap, handler, «target»).
+ var trap_result = %_Call(trap, handler, target);
+ // 8. If Type(trapResult) is not Object, throw a TypeError exception.
+ if (!IS_RECEIVER(trap_result)) {
+ throw MakeTypeError(kProxyEnumerateNonObject);
+ }
+ // 9. Return trapResult.
+ var result = [];
+ for (var it = trap_result.next(); !it.done; it = trap_result.next()) {
+ var key = it.value;
+ // Not yet spec'ed as of 2015-11-25, but will be spec'ed soon:
+ // If the iterator returns a non-string value, throw a TypeError.
+ if (!IS_STRING(key)) {
+ throw MakeTypeError(kProxyEnumerateNonString);
+ }
+ result.push(key);
+ }
+ return result;
+}
+
+//-------------------------------------------------------------------
+
+//Set up non-enumerable properties of the Proxy object.
+utils.InstallFunctions(GlobalProxy, DONT_ENUM, [
+ "revocable", ProxyCreateRevocable
+]);
+
+// -------------------------------------------------------------------
+// Exports
+
+%InstallToContext([
+ "proxy_enumerate", ProxyEnumerate,
+]);
+
+})