LCOV - code coverage report
Current view: directory - js/xpconnect/src - XPCJSWeakReference.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 29 25 86.2 %
Date: 2012-06-02 Functions: 6 6 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Alex Fritze.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2004
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Alex Fritze <alex@croczilla.com> (original author)
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "xpcprivate.h"
      39                 : #include "XPCJSWeakReference.h"
      40                 : 
      41            3505 : xpcJSWeakReference::xpcJSWeakReference()
      42                 : {
      43            3505 : }
      44                 : 
      45           57607 : NS_IMPL_ISUPPORTS1(xpcJSWeakReference, xpcIJSWeakReference)
      46                 : 
      47            3505 : nsresult xpcJSWeakReference::Init(JSContext* cx, const JS::Value& object)
      48                 : {
      49            7010 :     JSAutoRequest ar(cx);
      50                 : 
      51            3505 :     if (!object.isObject())
      52               1 :         return NS_OK;
      53                 : 
      54            3504 :     JSObject& obj = object.toObject();
      55                 : 
      56            7008 :     XPCCallContext ccx(NATIVE_CALLER, cx);
      57                 : 
      58            7008 :     nsRefPtr<nsXPCWrappedJS> wrapped;
      59                 :     nsresult rv = nsXPCWrappedJS::GetNewOrUsed(ccx,
      60                 :                                                &obj,
      61                 :                                                NS_GET_IID(nsISupports),
      62                 :                                                nsnull,
      63            3504 :                                                getter_AddRefs(wrapped));
      64            3504 :     if (!wrapped) {
      65               0 :         NS_ERROR("can't get nsISupportsWeakReference wrapper for obj");
      66               0 :         return rv;
      67                 :     }
      68                 : 
      69            3504 :     return wrapped->GetWeakReference(getter_AddRefs(mWrappedJSObject));
      70                 : }
      71                 : 
      72                 : NS_IMETHODIMP
      73            1851 : xpcJSWeakReference::Get(JSContext* aCx, JS::Value* aRetval)
      74                 : {
      75            1851 :     *aRetval = JSVAL_NULL;
      76                 : 
      77            1851 :     if (!mWrappedJSObject) {
      78               1 :         return NS_OK;
      79                 :     }
      80                 : 
      81            3700 :     nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryReferent(mWrappedJSObject);
      82            1850 :     if (!wrappedObj) {
      83             214 :         return NS_OK;
      84                 :     }
      85                 : 
      86                 :     JSObject *obj;
      87            1636 :     wrappedObj->GetJSObject(&obj);
      88            1636 :     if (!obj) {
      89               0 :         return NS_OK;
      90                 :     }
      91                 : 
      92                 :     // Most users of XPCWrappedJS don't need to worry about
      93                 :     // re-wrapping because things are implicitly rewrapped by
      94                 :     // xpcconvert. However, because we're doing this directly
      95                 :     // through the native call context, we need to call
      96                 :     // JS_WrapObject().
      97            1636 :     if (!JS_WrapObject(aCx, &obj)) {
      98               0 :         return NS_ERROR_FAILURE;
      99                 :     }
     100                 : 
     101            1636 :     *aRetval = OBJECT_TO_JSVAL(obj);
     102            1636 :     return NS_OK;
     103                 : }

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