MetaItem.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "Forward.hpp"
#include "Type.hpp"
#include "Box.hpp"
 
#include "CeresEngine/Foundation/Function.hpp"
#include "CeresEngine/Foundation/String.hpp"
#include "CeresEngine/Foundation/Container/Map.hpp"
 
#include <functional>
 
namespace CeresEngine {
 
    enum class MetaCategory : unsigned int {
        Class,
 
        Property,
 
        Method,
 
        Constructor,
 
        Enum,
 
        EnumValue,
    };
 
    class ReflectionAttributeContainer {
    private:
        HashMap<TypeID, Box> mAttributes;
 
    public:
        using EnumerateFunction = FunctionView<bool(const Box&) const>;
 
        template<typename T> [[nodiscard]] bool has() const { return has(getType<T>()); }
 
        [[nodiscard]] bool has(const Type& type) const;
 
        template<typename T> [[nodiscard]] const T& get() const { return get(getType<T>()).template cref<T>(); }
 
        [[nodiscard]] const Box& get(const Type& type) const;
 
        template<typename T> [[nodiscard]] const T* getIf() const { return has<T>() ? &get<T>() : nullptr; }
 
        void set(const Type& type, Box&& value);
 
        void set(Box&& value);
 
        void forEach(const EnumerateFunction& func) const;
    };
 
    class MetaItem {
    public:
        virtual ~MetaItem() noexcept = default;
 
    public:
        [[nodiscard]] virtual MetaCategory getCategory() const = 0;
    };
 
} //namespace CeresEngine