Elfspy/Variadic.h

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2016-09-16 17:45:35 +02:00
#ifndef ELFSPY_VARIADIC_H
#define ELFSPY_VARIADIC_H
namespace spy
{
/**
* @namespace spy
* @class Variadic
* get the n'th argument from a variadic parameter list
*/
template <size_t N, typename T, typename... ArgTypes> struct Variadic;
template <typename T, typename... ArgTypes>
struct Variadic<0, T, ArgTypes...>
{
typedef T Type;
static T&& get(T&& first, ArgTypes&&...)
{
return std::forward<Type>(first);
}
};
template <size_t N, typename T, typename... ArgTypes>
struct Variadic
{
using Next = Variadic<N - 1, ArgTypes...>;
using Type = typename Next::Type;
static Type&& get(T&& first, ArgTypes&&... args)
{
return std::forward<Type>(Next::get(std::forward<ArgTypes>(args)...));
}
};
} // namespace elfspy
#endif