♻️ reorganized code

develop/detail/iterators/internal_iterator.hpp

@@ -0,0 +1,28 @@
+#ifndef NLOHMANN_JSON_DETAIL_ITERATORS_INTERNAL_ITERATOR_HPP
+#define NLOHMANN_JSON_DETAIL_ITERATORS_INTERNAL_ITERATOR_HPP
+
+#include "detail/iterators/primitive_iterator.hpp"
+
+namespace nlohmann
+{
+namespace detail
+{
+/*!
+@brief an iterator value
+
+@note This structure could easily be a union, but MSVC currently does not allow
+unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
+*/
+template<typename BasicJsonType> struct internal_iterator
+{
+    /// iterator for JSON objects
+    typename BasicJsonType::object_t::iterator object_iterator {};
+    /// iterator for JSON arrays
+    typename BasicJsonType::array_t::iterator array_iterator {};
+    /// generic iterator for all other types
+    primitive_iterator_t primitive_iterator {};
+};
+}
+}
+
+#endif