diff -r 000000000000 -r 6474c204b198 dom/xslt/xpath/txXPathObjectAdaptor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/xslt/xpath/txXPathObjectAdaptor.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 txXPathObjectAdaptor_h__
+#define txXPathObjectAdaptor_h__
+
+#include "txExprResult.h"
+#include "txINodeSet.h"
+#include "txIXPathObject.h"
+
+/**
+ * Implements an XPCOM wrapper around XPath data types boolean, number, string,
+ * or nodeset.
+ */
+
+class txXPathObjectAdaptor : public txIXPathObject
+{
+public:
+    txXPathObjectAdaptor(txAExprResult *aValue) : mValue(aValue)
+    {
+        NS_ASSERTION(aValue,
+                     "Don't create a txXPathObjectAdaptor if you don't have a "
+                     "txAExprResult");
+    }
+    virtual ~txXPathObjectAdaptor() {}
+
+    NS_DECL_ISUPPORTS
+
+    NS_IMETHODIMP_(txAExprResult*) GetResult()
+    {
+        return mValue;
+    }
+
+protected:
+    txXPathObjectAdaptor() : mValue(nullptr)
+    {
+    }
+
+    nsRefPtr<txAExprResult> mValue;
+};
+
+#endif // txXPathObjectAdaptor_h__