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fix enum_range max/min

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This commit is contained in:
terik23 2019-04-09 02:55:04 +05:00
parent 729cf3d222
commit c8de9e398e
1 changed files with 3 additions and 2 deletions
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5
include/magic_enum.hpp
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@ -56,7 +56,7 @@ namespace detail {
template <typename E, typename U = std::underlying_type_t<E>>
[[nodiscard]] constexpr int min_impl() {
static_assert(std::is_enum_v<E>, "magic_enum::detail::min_impl requires enum type.");
constexpr int min = (enum_range<E>::min > std::numeric_limits<U>::min()) ? enum_range<E>::min : std::numeric_limits<U>::min();
constexpr int min = enum_range<E>::min > (std::numeric_limits<U>::min)() ? enum_range<E>::min : (std::numeric_limits<U>::min)();
return min;
}
@ -64,7 +64,8 @@ template <typename E, typename U = std::underlying_type_t<E>>
template <typename E, typename U = std::underlying_type_t<E>>
[[nodiscard]] constexpr decltype(auto) range_impl() {
static_assert(std::is_enum_v<E>, "magic_enum::detail::range_impl requires enum type.");
constexpr int max = (enum_range<E>::max < std::numeric_limits<U>::max()) ? enum_range<E>::max : std::numeric_limits<U>::max();
static_assert(enum_range<E>::max > enum_range<E>::min, "magic_enum::enum_range requires max > min.");
constexpr int max = enum_range<E>::max < (std::numeric_limits<U>::max)() ? enum_range<E>::max : (std::numeric_limits<U>::max)();
constexpr auto range = std::make_integer_sequence<int, max - min_impl<E>() + 1>{};
return range;