1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/builtin/RawJSONObject.cpp b/js/src/builtin/RawJSONObject.cpp
new file mode 100644
index 0000000000..08a98835c1
--- /dev/null
+++ b/js/src/builtin/RawJSONObject.cpp
@@ -0,0 +1,41 @@
+/* -*- 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 "builtin/RawJSONObject.h"
+#include "js/PropertyDescriptor.h"
+
+#include "vm/JSObject-inl.h"
+
+using namespace js;
+
+const JSClass RawJSONObject::class_ = {"RawJSON",
+                                       JSCLASS_HAS_RESERVED_SLOTS(SlotCount)};
+
+/* static */
+RawJSONObject* RawJSONObject::create(JSContext* cx,
+                                     Handle<JSString*> jsonString) {
+  Rooted<RawJSONObject*> obj(
+      cx, NewObjectWithGivenProto<RawJSONObject>(cx, nullptr));
+  if (!obj) {
+    return nullptr;
+  }
+  Rooted<PropertyKey> id(cx, NameToId(cx->names().rawJSON));
+  Rooted<Value> jsonStringVal(cx, StringValue(jsonString));
+  if (!NativeDefineDataProperty(cx, obj, id, jsonStringVal, 0)) {
+    return nullptr;
+  }
+  return obj;
+}
+
+JSString* RawJSONObject::rawJSON(JSContext* cx) {
+  // RawJSONObjects are frozen on creation, so must always have a rawJSON string
+  // property.
+  PropertyKey id(NameToId(cx->names().rawJSON));
+  JS::Value vp;
+  MOZ_ALWAYS_TRUE(GetPropertyNoGC(cx, this, ObjectValue(*this), id, &vp));
+  MOZ_ASSERT(vp.isString());
+  return vp.toString();
+}