Changeset 216460 in webkit for trunk/Source/JavaScriptCore/API/JSObjectRef.cpp

Timestamp:

May 8, 2017, 3:51:11 PM (8 years ago)

Author:

[email protected]

Message:

Expose a function to get proxy targets
​https://bugs.webkit.org/show_bug.cgi?id=171797
<rdar://problem/32027549>

Reviewed by Mark Lam.

This exposes a new private API function, JSObjectGetProxyTarget(), that gets the target of a
proxy. It works with both ProxyObject and JSProxy, but it's primarily intended for use with
JSProxy.

• API/JSObjectRef.cpp:

(JSObjectGetProxyTarget):

• API/JSObjectRefPrivate.h:
• API/tests/JSObjectGetProxyTargetTest.cpp: Added.

(testJSObjectGetProxyTarget):

• API/tests/JSObjectGetProxyTargetTest.h: Added.
• API/tests/testapi.c:

(main):

• JavaScriptCore.xcodeproj/project.pbxproj:
• runtime/ProxyObject.h:
• shell/PlatformWin.cmake:

File:

• trunk/Source/JavaScriptCore/API/JSObjectRef.cpp (modified) (3 diffs)

trunk/Source/JavaScriptCore/API/JSObjectRef.cpp

@@ -1 +1 @@
 /*
- * Copyright (C) 2006, 2007, 2008, 2016 Apple Inc. All rights reserved.
+ * Copyright (C) 2006-2017 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Kelvin W Sherlock ([email protected])
  *
@@ -53 +53 @@
 #include "ObjectPrototype.h"
 #include "PropertyNameArray.h"
+#include "ProxyObject.h"
 #include "RegExpConstructor.h"
 
@@ -676 +677 @@
     propertyNames->add(propertyName->identifier(propertyNames->vm()));
 }
+
+JSObjectRef JSObjectGetProxyTarget(JSObjectRef objectRef)
+{
+    JSObject* object = toJS(objectRef);
+    if (!object)
+        return nullptr;
+    VM& vm = *object->vm();
+    JSLockHolder locker(vm);
+    JSObject* result = nullptr;
+    if (JSProxy* proxy = jsDynamicCast<JSProxy*>(vm, object))
+        result = proxy->target();
+    else if (ProxyObject* proxy = jsDynamicCast<ProxyObject*>(vm, object))
+        result = proxy->target();
+    return toRef(result);
+}