1 files changed, 56 insertions, 0 deletions
diff --git a/storage/Variant.cpp b/storage/Variant.cpp
new file mode 100644
index 0000000000..61cb5b0676
--- /dev/null
+++ b/storage/Variant.cpp
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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 "Variant.h"
+
+#include "nsCOMPtr.h"
+
+extern "C" {
+
+using namespace mozilla::storage;
+
+/**
+ * Return the data type of the given variant.  This method used to be exposed
+ * to XPCOM, but since bug 1507540 it's marked [notxpcom] in the interface
+ * definition, so we need this C function to access it from Rust.
+ */
+uint16_t NS_GetDataType(nsIVariant* aVariant) {
+  return aVariant->GetDataType();
+}
+
+// Convenience functions to create Storage variants from Rust.
+void NS_NewStorageNullVariant(nsIVariant** aVariant) {
+  nsCOMPtr<nsIVariant> variant = new NullVariant();
+  variant.forget(aVariant);
+}
+
+void NS_NewStorageBooleanVariant(bool aValue, nsIVariant** aVariant) {
+  nsCOMPtr<nsIVariant> variant = new BooleanVariant(aValue);
+  variant.forget(aVariant);
+}
+
+void NS_NewStorageIntegerVariant(int64_t aValue, nsIVariant** aVariant) {
+  nsCOMPtr<nsIVariant> variant = new IntegerVariant(aValue);
+  variant.forget(aVariant);
+}
+
+void NS_NewStorageFloatVariant(double aValue, nsIVariant** aVariant) {
+  nsCOMPtr<nsIVariant> variant = new FloatVariant(aValue);
+  variant.forget(aVariant);
+}
+
+void NS_NewStorageTextVariant(const nsAString& aValue, nsIVariant** aVariant) {
+  nsCOMPtr<nsIVariant> variant = new TextVariant(aValue);
+  variant.forget(aVariant);
+}
+
+void NS_NewStorageUTF8TextVariant(const nsACString& aValue,
+                                  nsIVariant** aVariant) {
+  nsCOMPtr<nsIVariant> variant = new UTF8TextVariant(aValue);
+  variant.forget(aVariant);
+}
+
+}  // extern "C"