LCOV - code coverage report
Current view: directory - objdir/dist/include - nsIInterfaceRequestorUtils.h (source / functions) Found Hit Coverage
Test: app.info Lines: 9 9 100.0 %
Date: 2012-06-02 Functions: 8 3 37.5 %

       1                 : /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  *
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is the Mozilla browser.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  * Netscape Communications, Inc.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 1999
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or 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                 : #ifndef __nsInterfaceRequestorUtils_h
      40                 : #define __nsInterfaceRequestorUtils_h
      41                 : 
      42                 : #include "nsCOMPtr.h"
      43                 : 
      44                 : // a type-safe shortcut for calling the |GetInterface()| member function
      45                 : // T must inherit from nsIInterfaceRequestor, but the cast may be ambiguous.
      46                 : template <class T, class DestinationType>
      47                 : inline
      48                 : nsresult
      49              37 : CallGetInterface( T* aSource, DestinationType** aDestination )
      50                 :   {
      51              37 :     NS_PRECONDITION(aSource, "null parameter");
      52              37 :     NS_PRECONDITION(aDestination, "null parameter");
      53                 : 
      54                 :     return aSource->GetInterface(NS_GET_TEMPLATE_IID(DestinationType),
      55              37 :                                  reinterpret_cast<void**>(aDestination));
      56                 :   }
      57                 : 
      58                 : class NS_COM_GLUE nsGetInterface : public nsCOMPtr_helper
      59                 :   {
      60                 :     public:
      61            1708 :       nsGetInterface( nsISupports* aSource, nsresult* error )
      62                 :           : mSource(aSource),
      63            1708 :             mErrorPtr(error)
      64                 :         {
      65                 :           // nothing else to do here
      66            1708 :         }
      67                 : 
      68                 :       virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const;
      69                 : 
      70                 :     private:
      71                 :       nsISupports*          mSource;
      72                 :       nsresult*             mErrorPtr;
      73                 :   };
      74                 : 
      75                 : inline
      76                 : const nsGetInterface
      77            1708 : do_GetInterface( nsISupports* aSource, nsresult* error = 0 )
      78                 :   {
      79            1708 :     return nsGetInterface(aSource, error);
      80                 :   }
      81                 : 
      82                 : #endif // __nsInterfaceRequestorUtils_h
      83                 : 

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