Type.define.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel.
//  Copyright (c) 2018-2023 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "Type.hpp"
#include "TypeInfo.hpp"
#include "TypeInfo.core.hpp"
#include "TypeInfo.std.hpp"
 
namespace CeresEngine {
 
    template<typename From, typename To, typename Converter = void> struct TypeConversionAutoRegistration final {
        const Converter& converter;
        CE_EXPLICIT_FALSE TypeConversionAutoRegistration(Converter&& converter) : converter(std::move(converter)) { Type::registerConverter<From, To>(this->converter); }
        ~TypeConversionAutoRegistration() { Type::unregisterConverter<From, To>(); }
    };
 
    template<typename From, typename To> struct TypeConversionAutoRegistration<From, To, void> final {
        TypeConversionAutoRegistration() { Type::registerConverter<From, To>(); }
        ~TypeConversionAutoRegistration() { Type::unregisterConverter<From, To>(); }
    };
 
    #define CE_META_TYPE_CONVERSION_NAME(From, To) CE_META_CONCAT(TypeConversionAutoRegistration, __COUNTER__)
    #define CE_META_TYPE_CONVERSION(From, To) \
        static const ::CeresEngine::TypeConversionAutoRegistration<From, To> CE_META_TYPE_CONVERSION_NAME(From, To)
    #define CE_META_TYPE_CONVERSION_FN(From, To) \
        static const ::CeresEngine::TypeConversionAutoRegistration<From, To, To(*)(const From&)> CE_META_TYPE_CONVERSION_NAME(From, To) = +[](const From& value) -> To
 
    #define CE_META_TYPE_CONVERSION_EXPR(From, To, ...) \
        CE_META_TYPE_CONVERSION_FN(From, To) { return __VA_ARGS__; }
 
}