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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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36
sprout/index_tuple/integer_sequence.hpp Normal file
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#ifndef SPROUT_INDEX_TUPLE_INTEGER_SEQUENCE_HPP
#define SPROUT_INDEX_TUPLE_INTEGER_SEQUENCE_HPP
#include <cstddef>
#include <sprout/config.hpp>
namespace sprout {
//
// integer_sequence
//
template<typename T, T... Is>
struct integer_sequence {
public:
typedef integer_sequence type;
template<T... J>
struct rebind
: public integer_sequence<T, J...>
{};
public:
typedef T value_type;
template<typename Seq>
struct transfer
: public Seq::template rebind<Is...>
{};
public:
SPROUT_STATIC_CONSTEXPR std::size_t static_size = sizeof...(Is);
public:
static SPROUT_CONSTEXPR size_t size() noexcept {
return static_size;
}
};
template<typename T, T... Is>
SPROUT_CONSTEXPR_OR_CONST std::size_t sprout::integer_sequence<T, Is...>::static_size;
} // namespace sprout
#endif // #ifndef SPROUT_INDEX_TUPLE_INTEGER_SEQUENCE_HPP