Rename Visitor to VariantDataVisitor

src/ArduinoJson/Json/JsonSerializer.hpp

@@ -7,12 +7,12 @@
 #include <ArduinoJson/Json/TextFormatter.hpp>
 #include <ArduinoJson/Serialization/measure.hpp>
 #include <ArduinoJson/Serialization/serialize.hpp>
-#include <ArduinoJson/Variant/Visitor.hpp>
+#include <ArduinoJson/Variant/VariantDataVisitor.hpp>
 
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
 template <typename TWriter>
-class JsonSerializer : public Visitor<size_t> {
+class JsonSerializer : public VariantDataVisitor<size_t> {
  public:
   static const bool producesText = true;
 

src/ArduinoJson/MsgPack/MsgPackSerializer.hpp

@@ -15,7 +15,7 @@
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
 template <typename TWriter>
-class MsgPackSerializer : public Visitor<size_t> {
+class MsgPackSerializer : public VariantDataVisitor<size_t> {
  public:
   static const bool producesText = false;
 

src/ArduinoJson/Variant/VariantCompare.hpp

@@ -8,11 +8,11 @@
 #include <ArduinoJson/Numbers/arithmeticCompare.hpp>
 #include <ArduinoJson/Polyfills/type_traits.hpp>
 #include <ArduinoJson/Strings/StringAdapters.hpp>
-#include <ArduinoJson/Variant/Visitor.hpp>
+#include <ArduinoJson/Variant/VariantDataVisitor.hpp>
 
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
-struct ComparerBase : Visitor<CompareResult> {};
+struct ComparerBase : VariantDataVisitor<CompareResult> {};
 
 template <typename T, typename Enable = void>
 struct Comparer;

src/ArduinoJson/Variant/VariantDataVisitor.hpp

@@ -12,7 +12,7 @@
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
 template <typename TResult>
-struct Visitor {
+struct VariantDataVisitor {
   typedef TResult result_type;
 
   TResult visitArray(const ArrayData&) {