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add _ placeholder User-defined literals

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This commit is contained in:
bolero-MURAKAMI 2013-07-07 19:10:25 +09:00
parent 50f2ba6e31
commit 2f86a59273
7 changed files with 188 additions and 116 deletions
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24
sprout/index_tuple/udl.hpp
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@ -6,33 +6,18 @@
#if SPROUT_USE_USER_DEFINED_LITERALS
#include <type_traits>
#include <sprout/index_tuple/make_index_tuple.hpp>
#include <sprout/detail/digits_to_int.hpp>
namespace sprout {
namespace detail {
template<typename IntType, char... Chars>
struct digits_to_int;
template<typename IntType, char C>
struct digits_to_int<IntType, C>
: public std::integral_constant<IntType, IntType(C - 48)>
{};
template<typename IntType, char Head, char... Tail>
struct digits_to_int<IntType, Head, Tail...>
: public std::integral_constant<IntType, 10 * IntType(Head - 48) + sprout::detail::digits_to_int<IntType, Tail...>::value>
{};
} // namespace detail
//
// indexes_result
// uindexes_result
//
template<char... Chars>
struct indexes_result
: public sprout::make_index_tuple<sprout::detail::digits_to_int<sprout::index_t, Chars...>::value>
{};
//
// uindexes_result
//
template<char... Chars>
struct uindexes_result
: public sprout::make_uindex_tuple<sprout::detail::digits_to_int<sprout::uindex_t, Chars...>::value>
@ -42,16 +27,13 @@ namespace sprout {
namespace indexes {
//
// _indexes
// _uindexes
//
template<char... Chars>
SPROUT_CONSTEXPR typename sprout::indexes_result<Chars...>::type
operator"" _indexes() {
return sprout::indexes_result<Chars...>::make();
}
//
// _uindexes
//
template<char... Chars>
SPROUT_CONSTEXPR typename sprout::uindexes_result<Chars...>::type
operator"" _uindexes() {