Reflection in C++14 - Member Function #2

member_function_ex_2.cpp

//! our function base class, non-templated.
//! it does really nothing, except helping us to store functions in the same container
class function_base {
public:
  virtual ~function_base(void) = default;
};

//! our function class, templated on return and parameters types
template <typename ReturnType, typename... Params>
class function;

template <typename ReturnType, typename... Params>
class function<ReturnType(Params...)> : public function_base {
public:
  //! our constructor
  //! we simply take an std::function as parameter and store it internally
  //! in fact, our function class is just a wrapper of std::function which inherits from function_base, nothing more
  function(const std::function<ReturnType(Params...)>& f) : f(f) {}

  //! a callable operator to be able to call our function
  ReturnType operator()(Params... params) {
      return f(params...);
  }

private:
  std::function<ReturnType(Params...)> f;
};