diff -r 000000000000 -r 6474c204b198 dom/xslt/xpath/txUnionNodeTest.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/xslt/xpath/txUnionNodeTest.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 "mozilla/FloatingPoint.h"
+
+#include "txExpr.h"
+#include "txExprResult.h"
+#include "txSingleNodeContext.h"
+
+bool
+txUnionNodeTest::matches(const txXPathNode& aNode,
+                         txIMatchContext* aContext)
+{
+    uint32_t i, len = mNodeTests.Length();
+    for (i = 0; i < len; ++i) {
+        if (mNodeTests[i]->matches(aNode, aContext)) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+double
+txUnionNodeTest::getDefaultPriority()
+{
+    NS_ERROR("Don't call getDefaultPriority on txUnionPattern");
+    return mozilla::UnspecifiedNaN<double>();
+}
+
+bool
+txUnionNodeTest::isSensitiveTo(Expr::ContextSensitivity aContext)
+{
+    uint32_t i, len = mNodeTests.Length();
+    for (i = 0; i < len; ++i) {
+        if (mNodeTests[i]->isSensitiveTo(aContext)) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+#ifdef TX_TO_STRING
+void
+txUnionNodeTest::toString(nsAString& aDest)
+{
+    aDest.AppendLiteral("(");
+    for (uint32_t i = 0; i < mNodeTests.Length(); ++i) {
+        if (i != 0) {
+            aDest.AppendLiteral(" | ");
+        }
+        mNodeTests[i]->toString(aDest);
+    }
+    aDest.AppendLiteral(")");
+}
+#endif