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refactor: quantity operators constraints refactored

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Mateusz Pusz
2023-10-20 08:42:22 +02:00
parent 32ea1bd9b4
commit eaa2ddbf01
1 changed files with 17 additions and 11 deletions
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28
src/core/include/mp-units/quantity.h
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@@ -60,14 +60,21 @@ concept QuantityConvertibleTo =
template<quantity_character Ch, typename Func, typename T, typename U>
concept InvokeResultOf = std::regular_invocable<Func, T, U> && RepresentationOf<std::invoke_result_t<Func, T, U>, Ch>;
template<typename Func, typename Q1, typename Q2,
quantity_character Ch = std::invoke_result_t<Func, std::remove_const_t<decltype(Q1::quantity_spec)>,
std::remove_const_t<decltype(Q2::quantity_spec)>>::character>
concept InvocableQuantities =
Quantity<Q1> && Quantity<Q2> && InvokeResultOf<Ch, Func, typename Q1::rep, typename Q2::rep>;
template<typename Func, typename Q1, typename Q2>
concept InvocableQuantities = Quantity<Q1> && Quantity<Q2> &&
InvokeResultOf<common_quantity_spec(Q1::quantity_spec, Q2::quantity_spec).character, Func,
typename Q1::rep, typename Q2::rep> &&
requires { common_reference(Q1::reference, Q2::reference); };
concept CommonlyInvocableQuantities =
Quantity<Q1> && Quantity<Q2> && (Q1::quantity_spec.character == Q2::quantity_spec.character) && requires {
common_reference(Q1::reference, Q2::reference);
} && InvocableQuantities<Func, Q1, Q2, common_quantity_spec(Q1::quantity_spec, Q2::quantity_spec).character>;
template<typename Func, Quantity Q1, Quantity Q2>
requires detail::InvocableQuantities<Func, Q1, Q2>
requires detail::CommonlyInvocableQuantities<Func, Q1, Q2>
using common_quantity_for = quantity<common_reference(Q1::reference, Q2::reference),
std::invoke_result_t<Func, typename Q1::rep, typename Q2::rep>>;
@@ -403,7 +410,7 @@ explicit(
// binary operators on quantities
template<auto R1, typename Rep1, auto R2, typename Rep2>
requires detail::InvocableQuantities<std::plus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
requires detail::CommonlyInvocableQuantities<std::plus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
[[nodiscard]] constexpr Quantity auto operator+(const quantity<R1, Rep1>& lhs, const quantity<R2, Rep2>& rhs)
{
using ret = detail::common_quantity_for<std::plus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>;
@@ -414,7 +421,7 @@ template<auto R1, typename Rep1, auto R2, typename Rep2>
}
template<auto R1, typename Rep1, auto R2, typename Rep2>
requires detail::InvocableQuantities<std::minus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
requires detail::CommonlyInvocableQuantities<std::minus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
[[nodiscard]] constexpr Quantity auto operator-(const quantity<R1, Rep1>& lhs, const quantity<R2, Rep2>& rhs)
{
using ret = detail::common_quantity_for<std::minus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>;
@@ -426,7 +433,7 @@ template<auto R1, typename Rep1, auto R2, typename Rep2>
template<auto R1, typename Rep1, auto R2, typename Rep2>
requires(!treat_as_floating_point<Rep1>) && (!treat_as_floating_point<Rep2>) &&
detail::InvocableQuantities<std::modulus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
detail::CommonlyInvocableQuantities<std::modulus<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
[[nodiscard]] constexpr Quantity auto operator%(const quantity<R1, Rep1>& lhs, const quantity<R2, Rep2>& rhs)
{
gsl_ExpectsAudit(rhs != rhs.zero());
@@ -438,8 +445,7 @@ template<auto R1, typename Rep1, auto R2, typename Rep2>
}
template<auto R1, typename Rep1, auto R2, typename Rep2>
requires detail::InvokeResultOf<(get_quantity_spec(R1) * get_quantity_spec(R2)).character, std::multiplies<>, Rep1,
Rep2>
requires detail::InvocableQuantities<std::multiplies<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
[[nodiscard]] constexpr Quantity auto operator*(const quantity<R1, Rep1>& lhs, const quantity<R2, Rep2>& rhs)
{
return make_quantity<R1 * R2>(lhs.numerical_value_ref_in(quantity<R1, Rep1>::unit) *
@@ -463,7 +469,7 @@ template<typename Value, auto R, typename Rep>
}
template<auto R1, typename Rep1, auto R2, typename Rep2>
requires detail::InvokeResultOf<(get_quantity_spec(R1) / get_quantity_spec(R2)).character, std::divides<>, Rep1, Rep2>
requires detail::InvocableQuantities<std::divides<>, quantity<R1, Rep1>, quantity<R2, Rep2>>
[[nodiscard]] constexpr Quantity auto operator/(const quantity<R1, Rep1>& lhs, const quantity<R2, Rep2>& rhs)
{
gsl_ExpectsAudit(rhs != rhs.zero());