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clean-up

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This commit is contained in:
neargye 2020-06-05 15:32:08 +05:00
parent 86e4564748
commit 4e82bfe21c
1 changed files with 11 additions and 4 deletions
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15
include/magic_enum.hpp
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@ -220,6 +220,11 @@ constexpr auto n() noexcept {
template <typename E, E V>
inline constexpr auto name_v = n<E, V>();
template <typename E, auto V>
constexpr bool is_valid() noexcept {
return n<E, static_cast<E>(V)>().size() != 0;
}
template <typename E, int Min, int Max>
constexpr std::size_t range_size() noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::range_size requires enum type.");
@ -259,7 +264,7 @@ inline constexpr int reflected_max_v = reflected_max<E>();
template <typename E, int... I>
constexpr auto values(std::integer_sequence<int, I...>) noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::values requires enum type.");
constexpr std::array<bool, sizeof...(I)> valid{{(n<E, static_cast<E>(I + reflected_min_v<E>)>().size() != 0)...}};
constexpr std::array<bool, sizeof...(I)> valid{{is_valid<E, I + reflected_min_v<E>>()...}};
constexpr int count = ((valid[I] ? 1 : 0) + ...);
std::array<E, count> values{};
@ -296,9 +301,9 @@ inline constexpr auto invalid_index_v = (std::numeric_limits<index_t<E>>::max)()
template <typename E, int... I>
constexpr auto indexes(std::integer_sequence<int, I...>) noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::indexes requires enum type.");
index_t<E> i = 0;
[[maybe_unused]] index_t<E> i = 0;
return std::array<index_t<E>, sizeof...(I)>{{((n<E, static_cast<E>(I + min_v<E>)>().size() != 0) ? i++ : invalid_index_v<E>)...}};
return std::array<index_t<E>, sizeof...(I)>{{(is_valid<E, I + min_v<E>>() ? i++ : invalid_index_v<E>)...}};
}
template <typename E>
@ -457,7 +462,9 @@ template <typename E>
// This version is much lighter on the compile times and is not restricted to the enum_range limitation.
template <auto V>
[[nodiscard]] constexpr auto enum_name() noexcept -> detail::enable_if_enum_t<decltype(V), std::string_view> {
constexpr std::string_view name = detail::name_v<std::decay_t<decltype(V)>, V>;
using D = std::decay_t<decltype(V)>;
static_assert(detail::supported<D>::value, "magic_enum unsupported compiler (https://github.com/Neargye/magic_enum#compiler-compatibility).");
constexpr std::string_view name = detail::name_v<std::decay_t<D>, V>;
static_assert(name.size() > 0, "Enum value does not have a name.");
return name;