Reorganized writer classes

src/ArduinoJson/Serialization/Writers/PrintWriter.hpp

@@ -0,0 +1,28 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2019
+// MIT License
+
+#pragma once
+
+namespace ARDUINOJSON_NAMESPACE {
+
+template <typename TDestination>
+class Writer<
+    TDestination,
+    typename enable_if<is_base_of< ::Print, TDestination>::value>::type> {
+ public:
+  explicit Writer(::Print& print) : _print(&print) {}
+
+  size_t write(uint8_t c) {
+    return _print->write(c);
+  }
+
+  size_t write(const uint8_t* s, size_t n) {
+    return _print->write(s, n);
+  }
+
+ private:
+  ::Print* _print;
+};
+
+}  // namespace ARDUINOJSON_NAMESPACE