xpcom/components/nsServiceManagerUtils.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 nsServiceManagerUtils_h__
   8 #define nsServiceManagerUtils_h__
   9
  10 #include "nsCOMPtr.h"
  11 #include "nsString.h"
  12
  13 inline nsGetServiceByCID do_GetService(const nsCID& aCID) {
  14   return nsGetServiceByCID(aCID);
  15 }
  16
  17 inline nsGetServiceByCIDWithError do_GetService(const nsCID& aCID,
  18                                                 nsresult* aError) {
  19   return nsGetServiceByCIDWithError(aCID, aError);
  20 }
  21
  22 inline nsGetServiceByContractID do_GetService(const char* aContractID) {
  23   return nsGetServiceByContractID(aContractID);
  24 }
  25
  26 inline nsGetServiceByContractIDWithError do_GetService(const char* aContractID,
  27                                                        nsresult* aError) {
  28   return nsGetServiceByContractIDWithError(aContractID, aError);
  29 }
  30
  31 nsresult CallGetService(const nsCID& aClass, const nsIID& aIID, void** aResult);
  32
  33 nsresult CallGetService(const char* aContractID, const nsIID& aIID,
  34                         void** aResult);
  35
  36 // type-safe shortcuts for calling |GetService|
  37 template <class DestinationType>
  38 inline nsresult CallGetService(const nsCID& aClass,
  39                                DestinationType** aDestination) {
  40   MOZ_ASSERT(aDestination, "null parameter");
  41
  42   return CallGetService(aClass, NS_GET_TEMPLATE_IID(DestinationType),
  43                         reinterpret_cast<void**>(aDestination));
  44 }
  45
  46 template <class DestinationType>
  47 inline nsresult CallGetService(const char* aContractID,
  48                                DestinationType** aDestination) {
  49   MOZ_ASSERT(aContractID, "null parameter");
  50   MOZ_ASSERT(aDestination, "null parameter");
  51
  52   return CallGetService(aContractID, NS_GET_TEMPLATE_IID(DestinationType),
  53                         reinterpret_cast<void**>(aDestination));
  54 }
  55
  56 #endif