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refactor: simplify Prefix

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This commit is contained in:
Johel Ernesto Guerrero Peña
2020-09-09 18:36:56 -04:00
committed by Mateusz Pusz
parent bc8632ee27
commit c284b7e25a
1 changed files with 3 additions and 9 deletions
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12
src/include/units/concepts.h
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@@ -50,14 +50,8 @@ namespace detail {
template<PrefixFamily PF, ratio R> template<PrefixFamily PF, ratio R>
struct prefix_base; struct prefix_base;
struct is_derived_from_prefix_base_impl { template<PrefixFamily PF, ratio R>
template<typename PF, ratio R> void to_prefix_base(const volatile prefix_base<PF, R>*);
static constexpr std::true_type check_base(const prefix_base<PF, R>&);
static constexpr std::false_type check_base(...);
};
template<typename T>
inline constexpr bool is_derived_from_prefix_base = decltype(is_derived_from_prefix_base_impl::check_base(std::declval<T>()))::value;
} // namespace detail } // namespace detail
@@ -67,7 +61,7 @@ inline constexpr bool is_derived_from_prefix_base = decltype(is_derived_from_pre
* Satisfied by all specializations of `prefix`. * Satisfied by all specializations of `prefix`.
*/ */
template<typename T> template<typename T>
concept Prefix = detail::is_derived_from_prefix_base<T>; concept Prefix = requires(const volatile T* t) { detail::to_prefix_base(t); };
/** /**
* @brief A concept matching unit's ratio * @brief A concept matching unit's ratio