property.hpp

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#ifndef NEFORCE_CORE_REFLECT_PROPERTY_HPP__
#define NEFORCE_CORE_REFLECT_PROPERTY_HPP__

 
#include "NeForce/core/functional/function.hpp"
#include "NeForce/core/reflect/any.hpp"
NEFORCE_BEGIN_NAMESPACE__
NEFORCE_BEGIN_REFLECT__


class meta_property {
public:
    using getter = function<meta_any(void*)>;              
    using setter = function<void(void*, const meta_any&)>; 
 
private:
    string_view name_;         
    reflect::type_id type_id_; 
    getter getter_;            
    setter setter_;            
 
public:
    meta_property(string_view name, reflect::type_id type_id, getter getter, setter setter) :
    name_(name),
    type_id_(type_id),
    getter_(move(getter)),
    setter_(move(setter)) {}

    NEFORCE_NODISCARD string_view name() const noexcept { return name_; }

    NEFORCE_NODISCARD reflect::type_id type_id() const noexcept { return type_id_; }

    NEFORCE_NODISCARD meta_any get(void* obj) const {
        if (!obj || !getter_) {
            return meta_any{};
        }
        return getter_(move(obj));
    }

    bool set(void* obj, const meta_any& value) const {
        if (!obj || !setter_) {
            return false;
        }
        try {
            setter_(move(obj), value);
            return true;
        } catch (...) {
            return false;
        }
    }

    template <typename T, enable_if_t<!is_same_v<meta_any, decay_t<T>>, int> = 0>
    bool set(void* obj, T&& value) const {
        return this->set(obj, meta_any{_NEFORCE forward<T>(value)});
    }
};
 // Reflection
 
NEFORCE_END_REFLECT__
NEFORCE_END_NAMESPACE__
#endif // NEFORCE_CORE_REFLECT_PROPERTY_HPP__