The Tor Browser / file comparison
comparison: xpcom/glue/nsIInterfaceRequestorUtils.h
xpcom/glue/nsIInterfaceRequestorUtils.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
equal
deleted
inserted
replaced
| -1:000000000000 | 0:682a8d0dcb44 |
|---|---|
| 1 /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef __nsInterfaceRequestorUtils_h | |
| 8 #define __nsInterfaceRequestorUtils_h | |
| 9 | |
| 10 #include "nsCOMPtr.h" | |
| 11 | |
| 12 // a type-safe shortcut for calling the |GetInterface()| member function | |
| 13 // T must inherit from nsIInterfaceRequestor, but the cast may be ambiguous. | |
| 14 template <class T, class DestinationType> | |
| 15 inline | |
| 16 nsresult | |
| 17 CallGetInterface( T* aSource, DestinationType** aDestination ) | |
| 18 { | |
| 19 NS_PRECONDITION(aSource, "null parameter"); | |
| 20 NS_PRECONDITION(aDestination, "null parameter"); | |
| 21 | |
| 22 return aSource->GetInterface(NS_GET_TEMPLATE_IID(DestinationType), | |
| 23 reinterpret_cast<void**>(aDestination)); | |
| 24 } | |
| 25 | |
| 26 class NS_COM_GLUE nsGetInterface : public nsCOMPtr_helper | |
| 27 { | |
| 28 public: | |
| 29 nsGetInterface( nsISupports* aSource, nsresult* error ) | |
| 30 : mSource(aSource), | |
| 31 mErrorPtr(error) | |
| 32 { | |
| 33 // nothing else to do here | |
| 34 } | |
| 35 | |
| 36 virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const; | |
| 37 | |
| 38 private: | |
| 39 nsISupports* mSource; | |
| 40 nsresult* mErrorPtr; | |
| 41 }; | |
| 42 | |
| 43 inline | |
| 44 const nsGetInterface | |
| 45 do_GetInterface( nsISupports* aSource, nsresult* error = 0 ) | |
| 46 { | |
| 47 return nsGetInterface(aSource, error); | |
| 48 } | |
| 49 | |
| 50 #endif // __nsInterfaceRequestorUtils_h | |
| 51 |
