1 files changed, 20 insertions, 0 deletions
diff --git a/xpcom/base/nsVersionComparatorImpl.cpp b/xpcom/base/nsVersionComparatorImpl.cpp
new file mode 100644
index 0000000000..b52395bbac
--- /dev/null
+++ b/xpcom/base/nsVersionComparatorImpl.cpp
@@ -0,0 +1,20 @@
+/* -*- 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 "nsVersionComparatorImpl.h"
+#include "nsVersionComparator.h"
+#include "nsString.h"
+
+NS_IMPL_ISUPPORTS(nsVersionComparatorImpl, nsIVersionComparator)
+
+NS_IMETHODIMP
+nsVersionComparatorImpl::Compare(const nsACString& aStr1,
+                                 const nsACString& aStr2, int32_t* aResult) {
+  *aResult = mozilla::CompareVersions(PromiseFlatCString(aStr1).get(),
+                                      PromiseFlatCString(aStr2).get());
+
+  return NS_OK;
+}