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Downcasting reworked to allow OFF and AUTO modes

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Mateusz Pusz committed 2020-08-19 13:37:57 +02:00
1 parent 12c0177633
commit 5c98924efb
24 files changed
+386 -216
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src/include/units/unit.h
+14 -14
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@@ -74,18 +74,11 @@ struct same_unit_reference : is_same<typename U1::reference, typename U2::refere
* @tparam Child inherited class type used by the downcasting facility (CRTP Idiom)
*/
template<typename Child>
struct unit : downcast_child<Child, scaled_unit<ratio(1), Child>> {
struct unit : downcast_dispatch<Child, scaled_unit<ratio(1), Child>> {
static constexpr bool is_named = false;
using prefix_family = no_prefix;
};
/**
* @brief Unknown unit
*
* Used as a coherent unit of an unknown dimension.
*/
struct unknown_coherent_unit : unit<unknown_coherent_unit> {};
/**
* @brief A named unit
*
@@ -99,7 +92,7 @@ struct unknown_coherent_unit : unit<unknown_coherent_unit> {};
* @tparam PF no_prefix or a type of prefix family
*/
template<typename Child, basic_symbol_text Symbol, PrefixFamily PF>
struct named_unit : downcast_child<Child, scaled_unit<ratio(1), Child>> {
struct named_unit : downcast_dispatch<Child, scaled_unit<ratio(1), Child>> {
static constexpr bool is_named = true;
static constexpr auto symbol = Symbol;
using prefix_family = PF;
@@ -121,7 +114,7 @@ struct named_unit : downcast_child<Child, scaled_unit<ratio(1), Child>> {
*/
template<typename Child, basic_symbol_text Symbol, PrefixFamily PF, ratio R, Unit U>
requires UnitRatio<R>
struct named_scaled_unit : downcast_child<Child, scaled_unit<R * U::ratio, typename U::reference>> {
struct named_scaled_unit : downcast_dispatch<Child, scaled_unit<R * U::ratio, typename U::reference>> {
static constexpr bool is_named = true;
static constexpr auto symbol = Symbol;
using prefix_family = PF;
@@ -140,7 +133,7 @@ struct named_scaled_unit : downcast_child<Child, scaled_unit<R * U::ratio, typen
*/
template<typename Child, Prefix P, Unit U>
requires U::is_named && std::same_as<typename P::prefix_family, typename U::prefix_family>
struct prefixed_unit : downcast_child<Child, scaled_unit<P::ratio * U::ratio, typename U::reference>> {
struct prefixed_unit : downcast_dispatch<Child, scaled_unit<P::ratio * U::ratio, typename U::reference>> {
static constexpr bool is_named = true;
static constexpr auto symbol = P::symbol + U::symbol;
using prefix_family = no_prefix;
@@ -162,7 +155,7 @@ struct prefixed_unit : downcast_child<Child, scaled_unit<P::ratio * U::ratio, ty
template<typename Child, DerivedDimension Dim, Unit U, Unit... URest>
requires detail::same_scaled_units<typename Dim::recipe, U, URest...> &&
(U::is_named && (URest::is_named && ... && true))
struct deduced_unit : downcast_child<Child, detail::deduced_unit<Dim, U, URest...>> {
struct deduced_unit : downcast_dispatch<Child, detail::deduced_unit<Dim, U, URest...>> {
static constexpr bool is_named = false;
static constexpr auto symbol = detail::deduced_symbol_text<Dim, U, URest...>();
using prefix_family = no_prefix;
@@ -186,7 +179,7 @@ template<typename Child, DerivedDimension Dim, Unit U, Unit... URest>
requires detail::same_scaled_units<typename Dim::recipe, U, URest...> &&
(U::is_named && (URest::is_named && ... && true))
// TODO - 'noble' is placeholder to sort of mean can pass its name on to other deduced units
struct noble_deduced_unit : downcast_child<Child, detail::deduced_unit<Dim, U, URest...>> {
struct noble_deduced_unit : downcast_dispatch<Child, detail::deduced_unit<Dim, U, URest...>> {
static constexpr bool is_named = true;
static constexpr auto symbol = detail::deduced_symbol_text<Dim, U, URest...>();
using prefix_family = no_prefix;
@@ -210,7 +203,7 @@ struct noble_deduced_unit : downcast_child<Child, detail::deduced_unit<Dim, U, U
*/
template<typename Child, DerivedDimension Dim, basic_symbol_text Symbol, PrefixFamily PF, Unit U, Unit... URest>
requires detail::same_scaled_units<typename Dim::recipe, U, URest...>
struct named_deduced_unit : downcast_child<Child, detail::deduced_unit<Dim, U, URest...>> {
struct named_deduced_unit : downcast_dispatch<Child, detail::deduced_unit<Dim, U, URest...>> {
static constexpr bool is_named = true;
static constexpr auto symbol = Symbol;
using prefix_family = PF;
@@ -259,4 +252,11 @@ struct prefixed_alias_unit : U {
using prefix_family = no_prefix;
};
/**
* @brief Unknown unit
*
* Used as a coherent unit of an unknown dimension.
*/
struct unknown_coherent_unit : unit<unknown_coherent_unit> {};
} // namespace units