53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#ifndef ALSK_ALSK_SKELETON_LINK_LINK_H
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#define ALSK_ALSK_SKELETON_LINK_LINK_H
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#include <tmp/pack.h>
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#include "args.h"
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#include "utility.h"
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#include "../struct/struct.h"
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namespace alsk {
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/**
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* @brief hold the skeleton links
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*/
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template<template<typename...> class T, typename F, typename... Ts>
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using L = S<T, F, Ts...>;
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namespace impl {
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/**
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* Pack of return types from links
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*/
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template<typename...> struct LinksToReturnTypes;
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template<typename R, typename... Params, typename... Ls>
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struct LinksToReturnTypes<R(Params...), Ls...> {
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using type = tmp::PackCat<tmp::Pack<R>, typename LinksToReturnTypes<Ls...>::type>;
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};
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template<template<typename...> class Skel, typename R, typename... Params, typename... InnerLs, typename... Ls>
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struct LinksToReturnTypes<alsk::L<Skel, R(Params...), InnerLs...>, Ls...> {
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using type = tmp::PackCat<tmp::Pack<R>, typename LinksToReturnTypes<Ls...>::type>;
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};
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template<template<typename...> class Skel, std::size_t I, typename... Params, typename... InnerLs, typename... Ls>
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struct LinksToReturnTypes<alsk::L<Skel, alsk::arg::R<I>(Params...), InnerLs...>, Ls...> {
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using rets = typename LinksToReturnTypes<InnerLs...>::type;
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using R = tmp::PackGet<rets, I>;
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using type = tmp::PackCat<tmp::Pack<R>, typename LinksToReturnTypes<Ls...>::type>;
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};
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template<>
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struct LinksToReturnTypes<> {
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using type = tmp::Pack<>;
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};
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}
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}
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#endif
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