Added a clear error message for StaticJsonBuffer and DynamicJsonBuffer

CHANGELOG.md

@@ -1,6 +1,11 @@
 ArduinoJson: change log
 =======================
 
+HEAD
+----
+
+* Added a clear error message for `StaticJsonBuffer` and `DynamicJsonBuffer`
+
 v6.9.0 (2019-02-26)
 ------
 

src/ArduinoJson.hpp

@@ -28,6 +28,8 @@
 #include "ArduinoJson/MsgPack/MsgPackDeserializer.hpp"
 #include "ArduinoJson/MsgPack/MsgPackSerializer.hpp"
 
+#include "ArduinoJson/compatibility.hpp"
+
 namespace ArduinoJson {
 typedef ARDUINOJSON_NAMESPACE::ArrayConstRef JsonArrayConst;
 typedef ARDUINOJSON_NAMESPACE::ArrayRef JsonArray;

src/ArduinoJson/compatibility.hpp

@@ -0,0 +1,23 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2019
+// MIT License
+//
+// clang-format off
+
+#ifdef __GNUC__
+
+#define ARDUINOJSON_PRAGMA(x) _Pragma(#x)
+
+#define ARDUINOJSON_COMPILE_ERROR(msg) ARDUINOJSON_PRAGMA(GCC error msg)
+
+#define ARDUINOJSON_STRINGIFY(S) #S
+
+#define ARDUINOJSON_DEPRECATION_ERROR(X, Y) \
+  ARDUINOJSON_COMPILE_ERROR(ARDUINOJSON_STRINGIFY(X is a Y from ArduinoJson 5. Please see arduinojson.org/upgrade to learn how to upgrade your program to ArduinoJson version 6))
+
+#define StaticJsonBuffer ARDUINOJSON_DEPRECATION_ERROR(StaticJsonBuffer, class)
+#define DynamicJsonBuffer ARDUINOJSON_DEPRECATION_ERROR(DynamicJsonBuffer, class)
+#define JsonBuffer ARDUINOJSON_DEPRECATION_ERROR(JsonBuffer, class)
+#define RawJson ARDUINOJSON_DEPRECATION_ERROR(RawJson, function)
+
+#endif