containers.hpp

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#ifndef GKO_CORE_SYNTHESIZER_CONTAINERS_
#define GKO_CORE_SYNTHESIZER_CONTAINERS_


namespace gko {
namespace syn {


template <typename T, T... Values>
struct value_list {};


template <typename... Types>
struct type_list {};


template <int Start, int End, int Step = 1>
struct range {};


namespace detail {


template <typename List1, typename List2>
struct concatenate_impl;

template <typename T, T... Values1, T... Values2>
struct concatenate_impl<value_list<T, Values1...>, value_list<T, Values2...>> {
    using type = value_list<T, Values1..., Values2...>;
};


}  // namespace detail


template <typename List1, typename List2>
using concatenate = typename detail::concatenate_impl<List1, List2>::type;


namespace detail {


template <typename T, typename = void>
struct as_list_impl;

template <typename T, T... Values>
struct as_list_impl<value_list<T, Values...>> {
    using type = value_list<T, Values...>;
};

template <typename... Types>
struct as_list_impl<type_list<Types...>> {
    using type = type_list<Types...>;
};

template <int Start, int End, int Step>
struct as_list_impl<range<Start, End, Step>, xstd::enable_if_t<(Start < End)>> {
    using type = concatenate<
        value_list<int, Start>,
        typename as_list_impl<range<Start + Step, End, Step>>::type>;
};

template <int Start, int End, int Step>
struct as_list_impl<range<Start, End, Step>,
                    xstd::enable_if_t<(Start >= End)>> {
    using type = value_list<int>;
};


}  // namespace detail


template <typename T>
using as_list = typename detail::as_list_impl<T>::type;


}  // namespace syn
}  // namespace gko


#endif  // GKO_CORE_SYNTHESIZER_CONTAINERS_