MethodFunctor.hxx

 
//
//  Copyright Phoenix Contact GmbH & Co. KG
//
#pragma once
#include "Arp/System/Core/Arp.h"
#include "Arp/System/Core/Impl/DelegateFunctorBase.hxx"
 
namespace Arp { namespace System { namespace Core { namespace Impl
{
 
 
template <typename T> class MethodFunctor;
 
// class MethodFunctor is implemented completely implicite inline to avoid
// code bloat in commonly used Core classe and therefore reduce compile time
template<class C, class R, class ...A>
class MethodFunctor<R(C::*)(A...)> : public DelegateFunctorBase<MethodFunctor<R(C::*)(A...)>>
{
public: // typedefs/usings
    using MethodPtr = R(C::*)(A...);
 
public: // construction/destruction
    MethodFunctor(C* pObjectArg, R(C::*pMethodArg)(A...)) : pObject(pObjectArg), pMethod(pMethodArg) {}
    MethodFunctor(C& objectArg, R(C::*pMethodArg)(A...)) : pObject(&objectArg), pMethod(pMethodArg) {}
    MethodFunctor(const MethodFunctor& arg) = default;
    MethodFunctor& operator=(const MethodFunctor& arg) = default;
    virtual ~MethodFunctor(void)noexcept = default;
 
public: // static operations
    template<class ...Args>
    static R Invoke(void* pArg, Args&& ... args)
    {
        MethodFunctor* pThis = static_cast<MethodFunctor*>(pArg);
        return ((pThis->pObject)->*(pThis->pMethod))(std::forward<Args>(args)...);
    }
 
protected: // overidden operations
    bool Equals(const MethodFunctor& other)override
    {
        return this->pObject == other.pObject && this->pMethod == other.pMethod;
    }
 
private: // fields
    C*          pObject;
    MethodPtr   pMethod;
};
 
 
}}}} // end of namespace Arp::System::Core::Impl