[ox/model] Make field counting automatic

deps/ox/src/ox/model/metadata.hpp

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2015 - 2021 gary@drinkingtea.net
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <ox/std/byteswap.hpp>
+#include <ox/std/bstring.hpp>
+#include <ox/std/memory.hpp>
+#include <ox/std/string.hpp>
+#include <ox/std/trace.hpp>
+#include <ox/std/types.hpp>
+#include <ox/std/vector.hpp>
+
+#include "desctypes.hpp"
+#include "fieldcounter.hpp"
+#include "optype.hpp"
+#include "typenamecatcher.hpp"
+#include "types.hpp"
+
+namespace ox {
+
+namespace detail {
+
+template<bool>
+struct BoolWrapper {
+};
+
+template<typename T, typename = BoolWrapper<true>>
+struct preloadable : false_type {
+};
+
+template<typename T>
+struct preloadable<T, BoolWrapper<T::Preloadable>> {
+	static constexpr bool value = T::Preloadable;
+};
+
+// cannot be done until C++20
+//struct PseudoString {
+//	constexpr PseudoString(const char* = "") noexcept {}
+//};
+//
+//template<PseudoString>
+//struct StringWrapper {
+//};
+//
+//template<typename T, typename = StringWrapper<"">>
+//struct ModelTypeName {
+//	static constexpr const char *value = "";
+//};
+//
+//template<typename T>
+//struct ModelTypeName<T, detail::StringWrapper<T::TypeName>> {
+//	static constexpr const char *value = T::TypeName;
+//};
+
+}
+
+}