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refactor: value_casts cleanup

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Mateusz Pusz
2023-12-20 09:24:35 +01:00
parent 436463b7a7
commit 7c83f586db
1 changed files with 5 additions and 11 deletions
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16
src/core/include/mp-units/bits/value_cast.h
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@@ -42,18 +42,11 @@ namespace mp_units {
* @tparam ToU a unit to use for a target quantity * @tparam ToU a unit to use for a target quantity
*/ */
template<Unit auto ToU, typename Q> template<Unit auto ToU, typename Q>
[[nodiscard]] constexpr Quantity auto value_cast(Q&& q)
requires Quantity<std::remove_cvref_t<Q>> && (convertible(std::remove_reference_t<Q>::reference, ToU)) requires Quantity<std::remove_cvref_t<Q>> && (convertible(std::remove_reference_t<Q>::reference, ToU))
[[nodiscard]] constexpr Quantity auto value_cast(Q&& q)
{ {
using q_type = std::remove_reference_t<Q>; using q_type = std::remove_reference_t<Q>;
constexpr auto r = [] { return detail::sudo_cast<quantity<q_type::quantity_spec[ToU], typename q_type::rep>>(std::forward<Q>(q));
if constexpr (detail::is_specialization_of_reference<std::remove_const_t<decltype(q_type::reference)>>::value ||
!AssociatedUnit<std::remove_const_t<decltype(ToU)>>)
return reference<q_type::quantity_spec, ToU>{};
else
return ToU;
}();
return detail::sudo_cast<quantity<r, typename q_type::rep>>(std::forward<Q>(q));
} }
/** /**
@@ -106,10 +99,11 @@ template<Unit auto ToU, Representation ToRep, typename Q>
* @tparam ToU a unit to use for a target quantity point * @tparam ToU a unit to use for a target quantity point
*/ */
template<Unit auto ToU, typename QP> template<Unit auto ToU, typename QP>
[[nodiscard]] constexpr QuantityPoint auto value_cast(QP&& qp)
requires QuantityPoint<std::remove_cvref_t<QP>> && (convertible(std::remove_reference_t<QP>::reference, ToU)) requires QuantityPoint<std::remove_cvref_t<QP>> && (convertible(std::remove_reference_t<QP>::reference, ToU))
[[nodiscard]] constexpr QuantityPoint auto value_cast(QP&& qp)
{ {
return QP{value_cast<ToU>(std::forward<QP>(qp).quantity_from_origin_is_an_implementation_detail_), qp.point_origin}; return quantity_point{value_cast<ToU>(std::forward<QP>(qp).quantity_from_origin_is_an_implementation_detail_),
qp.point_origin};
} }
/** /**