Revert "remove external libraries from main branch"protocol-modeling

This reverts commit 0558244645611f314f47e0fa427f7323ce253eaf.

1 files changed, 23 insertions, 0 deletions

diff --git a/include/lib/ArduinoJson/Data/JsonVariantDefault.hpp b/include/lib/ArduinoJson/Data/JsonVariantDefault.hpp
new file mode 100644
index 0000000..57ecc83
--- /dev/null
+++ b/include/lib/ArduinoJson/Data/JsonVariantDefault.hpp
@@ -0,0 +1,23 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+namespace ArduinoJson {
+namespace Internals {
+
+template <typename T>
+struct JsonVariantDefault {
+  static T get() {
+    return T();
+  }
+};
+
+template <typename T>
+struct JsonVariantDefault<const T> : JsonVariantDefault<T> {};
+
+template <typename T>
+struct JsonVariantDefault<T&> : JsonVariantDefault<T> {};
+}
+}