overloaded.hpp

Go to the documentation of this file.

 
#ifndef EAGINE_OVERLOADED_HPP
#define EAGINE_OVERLOADED_HPP
 
#include <utility>
 
namespace eagine {
 
template <typename... Func>
struct overloaded;
 
template <typename Func>
struct overloaded<Func> : Func {
    overloaded(const Func& func)
      : Func{func} {}
 
    overloaded(Func&& func)
      : Func{std::move(func)} {}
 
    using Func::operator();
};
 
template <typename Func, typename... Funcs>
struct overloaded<Func, Funcs...>
  : Func
  , overloaded<Funcs...> {
    template <typename... F>
    overloaded(const Func& func, F&&... funcs)
      : Func{func}
      , overloaded<Funcs...>{std::forward<Funcs>(funcs)...} {}
 
    template <typename... F>
    overloaded(Func&& func, F&&... funcs)
      : Func{std::move(func)}
      , overloaded<Funcs...>{std::forward<Funcs>(funcs)...} {}
 
    using Func::operator();
    using overloaded<Funcs...>::operator();
};
 
template <typename... F>
overloaded(const F&...) -> overloaded<F...>;
 
} // namespace eagine
 
#endif // EAGINE_OVERLOADED_HPP