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static_assert for double-check

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terik23 2019-03-26 22:15:11 +05:00
parent 30618cd156
commit e4d3ea10a5
1 changed files with 3 additions and 0 deletions
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3
include/nameof.hpp
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@ -162,6 +162,7 @@ template <typename T>
template <auto V>
[[nodiscard]] constexpr std::string_view nameof_enum_impl() noexcept {
static_assert(std::is_enum_v<decltype(V)>);
#if defined(__clang__)
std::string_view name{__PRETTY_FUNCTION__};
constexpr auto suffix = sizeof("]") - 1;
@ -190,6 +191,7 @@ template <auto V>
template <typename E, int V>
struct nameof_enum_impl_t final {
[[nodiscard]] constexpr std::string_view operator()(int value) const noexcept {
static_assert(std::is_enum_v<E>);
if constexpr (V > std::numeric_limits<std::underlying_type_t<E>>::max()) {
return "nameof_enum::out_of_range";
}
@ -220,6 +222,7 @@ struct nameof_enum_impl_t final {
template <typename E>
struct nameof_enum_impl_t<E, NAMEOF_ENUM_MAX_SEARCH_DEPTH> final {
[[nodiscard]] constexpr std::string_view operator()(int) const noexcept {
static_assert(std::is_enum_v<E>);
return "nameof_enum::out_of_range";
}
};