Back to index

lightning-sunbird  0.9+nobinonly
nsFastLoadPtr.h
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla FastLoad code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 2001
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Brendan Eich <brendan@mozilla.org> (original author)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef nsFastLoadPtr_h___
00040 #define nsFastLoadPtr_h___
00041 
00052 #ifndef nsCOMPtr_h___
00053 #include "nsCOMPtr.h"
00054 #endif
00055 
00056 #ifndef nsIFastLoadService_h___
00057 #include "nsIFastLoadService.h"
00058 #endif
00059 
00067 PR_EXPORT_DATA(nsIFastLoadService*) gFastLoadService_;
00068 
00069 template <class T>
00070 class nsFastLoadPtr : public nsCOMPtr<T> {
00071   public:
00072     nsDerivedSafe<T>* get() const {
00073         if (!this->mRawPtr) {
00074             gFastLoadService_->GetFastLoadReferent(
00075                                          NS_REINTERPRET_CAST(nsISupports**,
00076                                                              &this->mRawPtr));
00077         }
00078         return NS_REINTERPRET_CAST(nsDerivedSafe<T>*, this->mRawPtr);
00079     }
00080 
00088     nsresult read(nsIObjectInputStream* aInputStream) {
00089         return gFastLoadService_->ReadFastLoadPtr(aInputStream,
00090                                          NS_REINTERPRET_CAST(nsISupports**,
00091                                                              &this->mRawPtr));
00092     }
00093 
00101     nsresult write(nsIObjectOutputStream* aOutputStream) {
00102         return gFastLoadService_->WriteFastLoadPtr(aOutputStream,
00103                                           NS_REINTERPRET_CAST(nsISupports*,
00104                                                               this->mRawPtr));
00105     }
00106 };
00107 
00108 #endif // nsFastLoadPtr_h___