Get type name using C++ 26

Author: liuzicheng1987

include/rfl/internal/cpp26/get_type_name.hpp

@@ -0,0 +1,35 @@
+#ifndef RFL_INTERNAL_CPP26_GETTYPENAME_HPP_
+#define RFL_INTERNAL_CPP26_GETTYPENAME_HPP_
+
+#include <meta>
+#include <type_traits>
+
+#include "../StringLiteral.hpp"
+
+namespace rfl::internal::cpp26 {
+
+template <class T>
+consteval auto get_type_name() {
+  using Type = std::remove_cvref_t<T>;
+  if constexpr (std::is_pointer_v<Type>) {
+    return get_type_name<std::remove_pointer_t<Type>>();
+  } else {
+    // TODO: Is there a way to get the name of the type without using
+    // compiler-specific extensions?
+#if defined(__GNUC__)
+    constexpr auto display_string = std::meta::display_string_of(^^Type);
+    constexpr auto drop_last_char =
+        display_string.substr(0, display_string.size() - 1);
+    constexpr auto name =
+        drop_last_char.substr(drop_last_char.find("{aka ") + 5);
+    return StringLiteral<name.size() + 1>(name);
+#else
+    static_assert(false,
+                  "You are using an unsupported compiler. Please use GCC or "
+                  "explicitly tag your structs using 'Tag' or 'Name'.");
+#endif
+  }
+}
+}  // namespace rfl::internal::cpp26
+
+#endif

include/rfl/internal/get_type_name.hpp

@@ -1,21 +1,21 @@
 #ifndef RFL_INTERNAL_GETTYPENAME_HPP_
 #define RFL_INTERNAL_GETTYPENAME_HPP_
-// TODO
-// #ifndef REFLECTCPP_USE_CPP26_REFLECTION
+
+#ifndef REFLECTCPP_USE_CPP26_REFLECTION
 #include "cpp20/get_type_name.hpp"
-// #else
-//  TODO
-// #endif
+#else
+#include "cpp26/get_type_name.hpp"
+#endif
 
 namespace rfl::internal {
 
 template <class T>
 consteval auto get_type_name() {
-  // #ifndef REFLECTCPP_USE_CPP26_REFLECTION
+#ifndef REFLECTCPP_USE_CPP26_REFLECTION
   return cpp20::get_type_name<T>();
-  // #else
-  //  TODO
-  // #endif
+#else
+  return cpp26::get_type_name<T>();
+#endif
 }
 
 }  // namespace rfl::internal