More foundation for more reflection.

source/instance.cpp

@@ -13,6 +13,8 @@ VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE
 
 namespace iwa
 {
+IWA_REGISTER_CLASS(Instance)
+
 namespace
 {
 void buildDefaultInstanceExtensionList(std::vector<ExtensionInfo>& outExtensions) noexcept

source/type_meta.cpp

@@ -0,0 +1,18 @@
+#include "iwa/type_meta.hpp"
+
+namespace iwa
+{
+namespace
+{
+std::vector<const Class*> gClassRegistry;
+}
+void registerClass(const Class* clazz) noexcept
+{
+    gClassRegistry.push_back(clazz);
+}
+
+std::span<const Class*> getRegisteredClasses() noexcept
+{
+    return gClassRegistry;
+}
+}

source/window.cpp

@@ -9,6 +9,8 @@ namespace iwa
 {
 inline constexpr const char* WINDOW_DATA_NAME = "iwa_window";
 
+IWA_REGISTER_CLASS(Window)
+
 namespace
 {
 Window* gLastEventWindow = nullptr;