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support for N3658 (Compile-time integer sequences): index_tuple

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rename: integer_seq -> integer_sequence, make_integer_sequence -> make_integer_sequence
add unsigned-index sequence: index_sequence(alias), make_index_sequence, index_sequence_for
add: integer_pack, index_pack
This commit is contained in:
bolero-MURAKAMI 2013-05-10 19:52:39 +09:00
parent a3aedcf136
commit bb36ef6e8b
24 changed files with 196 additions and 83 deletions
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20
sprout/index_tuple/tuple.hpp
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@ -5,7 +5,7 @@
#include <tuple>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/index_tuple/integer_seq.hpp>
#include <sprout/index_tuple/integer_sequence.hpp>
#include <sprout/index_tuple/index_tuple.hpp>
#include <sprout/utility/pack.hpp>
@ -18,14 +18,14 @@ namespace std {
// tuple_size
//
template<typename T, T... Is>
struct tuple_size<sprout::integer_seq<T, Is...> >
struct tuple_size<sprout::integer_sequence<T, Is...> >
: public std::integral_constant<std::size_t, sizeof...(Is)>
{};
//
// tuple_element
//
template<std::size_t I, typename T, T... Is>
struct tuple_element<I, sprout::integer_seq<T, Is...> > {
struct tuple_element<I, sprout::integer_sequence<T, Is...> > {
static_assert(I < sizeof...(Is), "tuple_element<>: index out of range");
public:
typedef typename sprout::tppack_c_at<I, T, Is...>::type type;
@ -36,14 +36,14 @@ namespace std {
//
template<sprout::index_t... Indexes>
struct tuple_size<sprout::index_tuple<Indexes...> >
: public std::tuple_size<sprout::integer_seq<sprout::index_t, Indexes...> >
: public std::tuple_size<sprout::integer_sequence<sprout::index_t, Indexes...> >
{};
//
// tuple_element
//
template<std::size_t I, sprout::index_t... Indexes>
struct tuple_element<I, sprout::index_tuple<Indexes...> >
: public std::tuple_element<I, sprout::integer_seq<sprout::index_t, Indexes...> >
: public std::tuple_element<I, sprout::integer_sequence<sprout::index_t, Indexes...> >
{};
//
@ -51,14 +51,14 @@ namespace std {
//
template<sprout::uindex_t... Indexes>
struct tuple_size<sprout::uindex_tuple<Indexes...> >
: public std::tuple_size<sprout::integer_seq<sprout::uindex_t, Indexes...> >
: public std::tuple_size<sprout::integer_sequence<sprout::uindex_t, Indexes...> >
{};
//
// tuple_element
//
template<std::size_t I, sprout::uindex_t... Indexes>
struct tuple_element<I, sprout::uindex_tuple<Indexes...> >
: public std::tuple_element<I, sprout::integer_seq<sprout::uindex_t, Indexes...> >
: public std::tuple_element<I, sprout::integer_sequence<sprout::uindex_t, Indexes...> >
{};
#if defined(__clang__)
# pragma clang diagnostic pop
@ -70,10 +70,10 @@ namespace sprout {
// tuple_get
//
template<std::size_t I, typename T, T... Is>
inline SPROUT_CONSTEXPR typename std::tuple_element<I, sprout::integer_seq<T, Is...> >::type
tuple_get(sprout::integer_seq<T, Is...>) SPROUT_NOEXCEPT {
inline SPROUT_CONSTEXPR typename std::tuple_element<I, sprout::integer_sequence<T, Is...> >::type
tuple_get(sprout::integer_sequence<T, Is...>) SPROUT_NOEXCEPT {
static_assert(I < sizeof...(Is), "tuple_get: index out of range");
typedef typename std::tuple_element<I, sprout::integer_seq<T, Is...> >::type type;
typedef typename std::tuple_element<I, sprout::integer_sequence<T, Is...> >::type type;
return type();
}