1 files changed, 80 insertions, 0 deletions
diff --git a/toolkit/components/glean/bindings/private/Object.cpp b/toolkit/components/glean/bindings/private/Object.cpp
new file mode 100644
index 0000000000..817b14dc0f
--- /dev/null
+++ b/toolkit/components/glean/bindings/private/Object.cpp
@@ -0,0 +1,80 @@
+/* -*- 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 "mozilla/glean/bindings/Object.h"
+
+#include "Common.h"
+#include "mozilla/dom/GleanMetricsBinding.h"
+#include "mozilla/dom/ToJSValue.h"
+#include "mozilla/Logging.h"
+#include "jsapi.h"
+#include "js/JSON.h"
+#include "nsContentUtils.h"
+
+using namespace mozilla::dom;
+
+namespace mozilla::glean {
+
+/* virtual */
+JSObject* GleanObject::WrapObject(JSContext* aCx,
+                                  JS::Handle<JSObject*> aGivenProto) {
+  return dom::GleanObject_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void GleanObject::Set(JSContext* aCx, JS::Handle<JSObject*> aObj) {
+  // We take in an `object`. Cannot be `null`!
+  // But at this point the type system doesn't know that.
+  JS::Rooted<JS::Value> value(aCx);
+  value.setObjectOrNull(aObj);
+
+  nsAutoString serializedValue;
+  bool res = nsContentUtils::StringifyJSON(aCx, value, serializedValue,
+                                           UndefinedIsNullStringLiteral);
+  if (!res) {
+    // JS_Stringify throws an exception, e.g. on cyclic objects.
+    // We don't want this rethrown.
+    JS_ClearPendingException(aCx);
+
+    LogToBrowserConsole(nsIScriptError::warningFlag,
+                        u"passed in object cannot be serialized"_ns);
+    return;
+  }
+
+  NS_ConvertUTF16toUTF8 payload(serializedValue);
+  mObject.SetStr(payload);
+}
+
+void GleanObject::TestGetValue(JSContext* aCx, const nsACString& aPingName,
+                               JS::MutableHandle<JSObject*> aResult,
+                               ErrorResult& aRv) {
+  aResult.set(nullptr);
+
+  auto result = mObject.TestGetValue(aPingName);
+  if (result.isErr()) {
+    aRv.ThrowDataError(result.unwrapErr());
+    return;
+  }
+  auto optresult = result.unwrap();
+  if (optresult.isNothing()) {
+    return;
+  }
+
+  const NS_ConvertUTF8toUTF16 str(optresult.ref());
+  JS::Rooted<JS::Value> json(aCx);
+  bool res = JS_ParseJSON(aCx, str.get(), str.Length(), &json);
+  if (!res) {
+    aRv.ThrowDataError("couldn't parse stored object");
+    return;
+  }
+  if (!json.isObject()) {
+    aRv.ThrowDataError("stored data does not represent a valid object");
+    return;
+  }
+
+  aResult.set(&json.toObject());
+}
+
+}  // namespace mozilla::glean