Implement array copy at the JsonArray level

src/ArduinoJson/Array/ArrayImpl.hpp

@@ -18,19 +18,6 @@ inline ArrayData::iterator ArrayData::at(size_t index) const {
   return it;
 }
 
-inline bool ArrayData::copyFrom(const ArrayData& src,
-                                ResourceManager* resources) {
-  clear(resources);
-
-  for (auto it = src.createIterator(); !it.done(); it.next()) {
-    auto var = addElement(resources);
-    if (!copyVariant(JsonVariant(var, resources),
-                     JsonVariantConst(it.data(), resources)))
-      return false;
-  }
-  return true;
-}
-
 inline VariantData* ArrayData::getOrAddElement(size_t index,
                                                ResourceManager* resources) {
   auto it = createIterator();

src/ArduinoJson/Array/JsonArray.hpp

@@ -80,7 +80,16 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   // Copies an array.
   // https://arduinojson.org/v6/api/jsonarray/set/
   FORCE_INLINE bool set(JsonArrayConst src) const {
-    return detail::ArrayData::copy(data_, src.data_, resources_);
+    if (!data_)
+      return false;
+
+    clear();
+    for (auto element : src) {
+      if (!add(element))
+        return false;
+    }
+
+    return true;
   }
 
   // Removes the element at the specified iterator.