LambdaFunctor.hxx

 
//
//  Copyright Phoenix Contact GmbH & Co. KG
//
#pragma once
#include "Arp/Base/Core/Detail/DelegateFunctorBase.hxx"
#include "Arp/Base/Core/Exception.hpp"
 
namespace Arp::Base::Core
{
 
 
template <typename T> class LambdaFunctor;
 
template<class R, class ...A>
class LambdaFunctor<R(A...)> : public DelegateFunctorBase<LambdaFunctor<R(A...)>>
{
public: // typedefs/usings
    using Function = std::function<R(A...)>;
 
public: // construction/destruction
    LambdaFunctor(const Function& f)
        : function(f)
    {
    }
 
    LambdaFunctor(Function&& f)
        : function(f)
    {
    }
 
public: // static operations
    template<class ...Args>
    static R Invoke(IDelegateFunctor* pFunctor, Args... args)
    {
        auto* pThis = dynamic_cast<LambdaFunctor*>(pFunctor);
        return std::invoke(pThis->function, args...);
    }
 
protected: // overridden operations
    bool EqualsTo(const LambdaFunctor& /*other*/)override
    {
        throw Exception(String::Format("Equality operation is not supported by lambda expressions or std::function."));
    }
 
private: // fields
    Function function;
};
 
 
} // end of namespace Arp::Base::Core