Refactor serial class with templates (#20783)

Marlin/src/core/macros.h

@@ -314,6 +314,32 @@
 
   #endif
 
+  // C++11 solution that is standard compliant. <type_traits> is not available on all platform
+  namespace Private {
+    template<bool, typename _Tp = void> struct enable_if { };
+    template<typename _Tp>              struct enable_if<true, _Tp> { typedef _Tp type; };
+  }
+  // C++11 solution using SFINAE to detect the existance of a member in a class at compile time. 
+  // It creates a HasMember<Type> structure containing 'value' set to true if the member exists  
+  #define HAS_MEMBER_IMPL(Member) \
+    namespace Private { \
+      template <typename Type, typename Yes=char, typename No=long> struct HasMember_ ## Member { \
+        template <typename C> static Yes& test( decltype(&C::Member) ) ; \
+        template <typename C> static No& test(...); \
+        enum { value = sizeof(test<Type>(0)) == sizeof(Yes) }; }; \
+    }
+
+  // Call the method if it exists, but do nothing if it does not. The method is detected at compile time.
+  // If the method exists, this is inlined and does not cost anything. Else, an "empty" wrapper is created, returning a default value
+  #define CALL_IF_EXISTS_IMPL(Return, Method, ...) \
+    HAS_MEMBER_IMPL(Method) \
+    namespace Private { \
+      template <typename T, typename ... Args> FORCE_INLINE typename enable_if<HasMember_ ## Method <T>::value, Return>::type Call_ ## Method(T * t, Args... a) { return static_cast<Return>(t->Method(a...)); } \
+                                                      _UNUSED static                                                  Return  Call_ ## Method(...) { return __VA_ARGS__; } \
+    }
+  #define CALL_IF_EXISTS(Return, That, Method, ...) \
+    static_cast<Return>(Private::Call_ ## Method(That, ##__VA_ARGS__))
+
 #else
 
   #define MIN_2(a,b)      ((a)<(b)?(a):(b))