1 files changed, 61 insertions, 0 deletions
diff --git a/dom/payments/PaymentRequestUtils.cpp b/dom/payments/PaymentRequestUtils.cpp
new file mode 100644
index 0000000000..073e03f54e
--- /dev/null
+++ b/dom/payments/PaymentRequestUtils.cpp
@@ -0,0 +1,61 @@
+/* -*- 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 "js/JSON.h"
+#include "nsContentUtils.h"
+#include "nsArrayUtils.h"
+#include "nsTString.h"
+#include "PaymentRequestUtils.h"
+
+namespace mozilla::dom {
+
+nsresult SerializeFromJSObject(JSContext* aCx, JS::HandleObject aObject,
+                               nsAString& aSerializedObject) {
+  MOZ_ASSERT(aCx);
+  JS::RootedValue value(aCx, JS::ObjectValue(*aObject));
+  return SerializeFromJSVal(aCx, value, aSerializedObject);
+}
+
+nsresult SerializeFromJSVal(JSContext* aCx, JS::HandleValue aValue,
+                            nsAString& aSerializedValue) {
+  aSerializedValue.Truncate();
+  nsAutoString serializedValue;
+  JS::RootedValue value(aCx, aValue.get());
+  NS_ENSURE_TRUE(nsContentUtils::StringifyJSON(aCx, &value, serializedValue),
+                 NS_ERROR_XPC_BAD_CONVERT_JS);
+  NS_ENSURE_TRUE(!serializedValue.IsEmpty(), NS_ERROR_FAILURE);
+  aSerializedValue = serializedValue;
+  return NS_OK;
+}
+
+nsresult DeserializeToJSObject(const nsAString& aSerializedObject,
+                               JSContext* aCx,
+                               JS::MutableHandleObject aObject) {
+  MOZ_ASSERT(aCx);
+  JS::RootedValue value(aCx);
+  nsresult rv = DeserializeToJSValue(aSerializedObject, aCx, &value);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+  if (value.isObject()) {
+    aObject.set(&value.toObject());
+  } else {
+    aObject.set(nullptr);
+  }
+  return NS_OK;
+}
+
+nsresult DeserializeToJSValue(const nsAString& aSerializedObject,
+                              JSContext* aCx, JS::MutableHandleValue aValue) {
+  MOZ_ASSERT(aCx);
+  if (!JS_ParseJSON(aCx, aSerializedObject.BeginReading(),
+                    aSerializedObject.Length(), aValue)) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  return NS_OK;
+}
+
+}  // namespace mozilla::dom