1 files changed, 33 insertions, 0 deletions
diff --git a/xpcom/glue/nsIInterfaceRequestorUtils.cpp b/xpcom/glue/nsIInterfaceRequestorUtils.cpp
new file mode 100644
index 0000000000..8a2dfe3f85
--- /dev/null
+++ b/xpcom/glue/nsIInterfaceRequestorUtils.cpp
@@ -0,0 +1,33 @@
+/* -*- 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/. */
+
+#include "nsIInterfaceRequestor.h"
+#include "nsIInterfaceRequestorUtils.h"
+
+nsresult
+nsGetInterface::operator()(const nsIID& aIID, void** aInstancePtr) const
+{
+  nsresult status;
+
+  if (mSource) {
+    nsCOMPtr<nsIInterfaceRequestor> factoryPtr = do_QueryInterface(mSource);
+    if (factoryPtr) {
+      status = factoryPtr->GetInterface(aIID, aInstancePtr);
+    } else {
+      status = NS_ERROR_NO_INTERFACE;
+    }
+  } else {
+    status = NS_ERROR_NULL_POINTER;
+  }
+
+  if (NS_FAILED(status)) {
+    *aInstancePtr = 0;
+  }
+  if (mErrorPtr) {
+    *mErrorPtr = status;
+  }
+  return status;
+}