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Make sequence_bt more generic by taking the index type as well.

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King_DuckZ 2016-07-11 16:45:46 +01:00
parent e70b137002
commit 62727d6831
1 changed files with 15 additions and 9 deletions
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24
include/helpers/sequence_bt.hpp
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@ -22,26 +22,32 @@
namespace dinhelp {
namespace bt {
template <std::size_t... I>
struct index_seq {
template <typename T, T... I>
struct number_seq {
};
template <std::size_t... I>
using index_seq = number_seq<std::size_t, I...>;
namespace implem {
template <std::size_t MIN, std::size_t MAX, std::size_t... I>
template <typename T, T MIN, T MAX, T... I>
struct range_builder;
template <std::size_t MIN, std::size_t... I>
struct range_builder<MIN, MIN, I...> {
typedef index_seq<I...> type;
template <typename T, T MIN, T... I>
struct range_builder<T, MIN, MIN, I...> {
typedef number_seq<T, I...> type;
};
template <std::size_t MIN, std::size_t N, std::size_t... I>
struct range_builder : public range_builder<MIN, N - 1, N - 1, I...> {
template <typename T, T MIN, T N, T... I>
struct range_builder : public range_builder<T, MIN, N - 1, N - 1, I...> {
};
} //namespace implem
template <typename T, T MIN, T MAX>
using number_range = typename implem::range_builder<T, MIN, MAX>::type;
template <std::size_t MIN, std::size_t MAX>
using index_range = typename implem::range_builder<MIN, MAX>::type;
using index_range = number_range<std::size_t, MIN, MAX>;
} //namespace bt
} //namespace dinhelp