1 files changed, 56 insertions, 0 deletions
diff --git a/xpcom/components/nsServiceManagerUtils.h b/xpcom/components/nsServiceManagerUtils.h
new file mode 100644
index 0000000000..4bfbc804cc
--- /dev/null
+++ b/xpcom/components/nsServiceManagerUtils.h
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsServiceManagerUtils_h__
+#define nsServiceManagerUtils_h__
+
+#include "nsCOMPtr.h"
+#include "nsString.h"
+
+inline nsGetServiceByCID do_GetService(const nsCID& aCID) {
+  return nsGetServiceByCID(aCID);
+}
+
+inline nsGetServiceByCIDWithError do_GetService(const nsCID& aCID,
+                                                nsresult* aError) {
+  return nsGetServiceByCIDWithError(aCID, aError);
+}
+
+inline nsGetServiceByContractID do_GetService(const char* aContractID) {
+  return nsGetServiceByContractID(aContractID);
+}
+
+inline nsGetServiceByContractIDWithError do_GetService(const char* aContractID,
+                                                       nsresult* aError) {
+  return nsGetServiceByContractIDWithError(aContractID, aError);
+}
+
+nsresult CallGetService(const nsCID& aClass, const nsIID& aIID, void** aResult);
+
+nsresult CallGetService(const char* aContractID, const nsIID& aIID,
+                        void** aResult);
+
+// type-safe shortcuts for calling |GetService|
+template <class DestinationType>
+inline nsresult CallGetService(const nsCID& aClass,
+                               DestinationType** aDestination) {
+  MOZ_ASSERT(aDestination, "null parameter");
+
+  return CallGetService(aClass, NS_GET_TEMPLATE_IID(DestinationType),
+                        reinterpret_cast<void**>(aDestination));
+}
+
+template <class DestinationType>
+inline nsresult CallGetService(const char* aContractID,
+                               DestinationType** aDestination) {
+  MOZ_ASSERT(aContractID, "null parameter");
+  MOZ_ASSERT(aDestination, "null parameter");
+
+  return CallGetService(aContractID, NS_GET_TEMPLATE_IID(DestinationType),
+                        reinterpret_cast<void**>(aDestination));
+}
+
+#endif