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Derived unit factory helpers refactored

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Mateusz Pusz committed 2019-11-08 16:51:45 +00:00
1 parent ad895b4651
commit 0125bd7762
23 files changed
+116 -92
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src/include/units/prefix.h
+11 -6
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@@ -28,18 +28,23 @@
namespace units {
struct prefix_type {};
template<typename T>
concept PrefixType = std::derived_from<T, prefix_type>;
namespace detail {
template<typename PrefixType, Ratio R>
struct prefix_base : downcast_base<prefix_base<PrefixType, R>> {
using prefix_type = PrefixType;
template<PrefixType PT, Ratio R>
struct prefix_base : downcast_base<prefix_base<PT, R>> {
using prefix_type = PT;
using ratio = R;
};
}
template<typename Child, typename PrefixType, Ratio R, basic_fixed_string Symbol>
struct prefix : downcast_child<Child, detail::prefix_base<PrefixType, R>> {
template<typename Child, PrefixType PT, Ratio R, basic_fixed_string Symbol>
struct prefix : downcast_child<Child, detail::prefix_base<PT, R>> {
static constexpr auto symbol = Symbol;
};
@@ -60,6 +65,6 @@ namespace units {
// concept Prefix = detail::is_prefix<T>;
concept Prefix = true;
struct no_prefix;
struct no_prefix : prefix_type {};
} // namespace units