LCOV - code coverage report
Current view: directory - toolkit/components/places - nsMaybeWeakPtr.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 38 34 89.5 %
Date: 2012-06-02 Functions: 3 3 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       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 Places code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Google Inc.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2005
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Brian Ryner <bryner@brianryner.com> (original author)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsMaybeWeakPtr.h"
      40                 : 
      41                 : void*
      42           14583 : nsMaybeWeakPtr_base::GetValueAs(const nsIID &iid) const
      43                 : {
      44                 :   nsresult rv;
      45                 :   void *ref;
      46           14583 :   if (mPtr) {
      47           14583 :     rv = mPtr->QueryInterface(iid, &ref);
      48           14583 :     if (NS_SUCCEEDED(rv)) {
      49            3630 :       return ref;
      50                 :     }
      51                 :   }
      52                 : 
      53           21906 :   nsCOMPtr<nsIWeakReference> weakRef = do_QueryInterface(mPtr);
      54           10953 :   if (weakRef) {
      55           10953 :     rv = weakRef->QueryReferent(iid, &ref);
      56           10953 :     if (NS_SUCCEEDED(rv)) {
      57           10953 :       return ref;
      58                 :     }
      59                 :   }
      60                 : 
      61               0 :   return nsnull;
      62                 : }
      63                 : 
      64                 : nsresult
      65            1480 : NS_AppendWeakElementBase(isupports_array_type *aArray,
      66                 :                          nsISupports *aElement,
      67                 :                          bool aOwnsWeak)
      68                 : {
      69            2960 :   nsCOMPtr<nsISupports> ref;
      70            1480 :   if (aOwnsWeak) {
      71            2694 :     nsCOMPtr<nsIWeakReference> weakRef;
      72            1347 :     weakRef = do_GetWeakReference(aElement);
      73            1347 :     reinterpret_cast<nsCOMPtr<nsISupports>*>(&weakRef)->swap(ref);
      74                 :   } else {
      75             133 :     ref = aElement;
      76                 :   }
      77                 : 
      78            1480 :   if (aArray->IndexOf(ref) != aArray->NoIndex) {
      79               0 :     return NS_ERROR_INVALID_ARG; // already present
      80                 :   }
      81            1480 :   if (!aArray->AppendElement(ref)) {
      82               0 :     return NS_ERROR_OUT_OF_MEMORY;
      83                 :   }
      84            1480 :   return NS_OK;
      85                 : }
      86                 : 
      87                 : nsresult
      88            1211 : NS_RemoveWeakElementBase(isupports_array_type *aArray,
      89                 :                          nsISupports *aElement)
      90                 : {
      91            1211 :   PRUint32 index = aArray->IndexOf(aElement);
      92            1211 :   if (index != aArray->NoIndex) {
      93             120 :     aArray->RemoveElementAt(index);
      94             120 :     return NS_OK;
      95                 :   }
      96                 : 
      97                 :   // Don't use do_GetWeakReference; it should only be called if we know
      98                 :   // the object supports weak references.
      99            2182 :   nsCOMPtr<nsISupportsWeakReference> supWeakRef = do_QueryInterface(aElement);
     100            1091 :   NS_ENSURE_TRUE(supWeakRef, NS_ERROR_INVALID_ARG);
     101                 : 
     102            2178 :   nsCOMPtr<nsIWeakReference> weakRef;
     103            1089 :   nsresult rv = supWeakRef->GetWeakReference(getter_AddRefs(weakRef));
     104            1089 :   NS_ENSURE_SUCCESS(rv, rv);
     105                 : 
     106            1089 :   index = aArray->IndexOf(weakRef);
     107            1089 :   if (index == aArray->NoIndex) {
     108               0 :     return NS_ERROR_INVALID_ARG;
     109                 :   }
     110                 : 
     111            1089 :   aArray->RemoveElementAt(index);
     112            1089 :   return NS_OK;
     113                 : }

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