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refactor: unit_symbol_impl simplified

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Mateusz Pusz
2024-10-03 16:44:59 +02:00
parent 51dc1d7469
commit 1ee98471ac
1 changed files with 11 additions and 11 deletions
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22
src/core/include/mp-units/framework/unit.h
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@@ -855,18 +855,18 @@ constexpr auto unit_symbol_impl(Out out, const power<F, Num, Den...>&, const uni
return copy_symbol_exponent<CharT, Num, Den...>(fmt.encoding, negative_power, out); return copy_symbol_exponent<CharT, Num, Den...>(fmt.encoding, negative_power, out);
} }
template<typename CharT, std::output_iterator<CharT> Out, DerivedUnitExpr M> template<typename CharT, std::output_iterator<CharT> Out, DerivedUnitExpr... Us>
constexpr Out unit_symbol_impl(Out out, M m, std::size_t Idx, const unit_symbol_formatting& fmt, bool negative_power) constexpr Out unit_symbol_impl(Out out, const type_list<>&, const unit_symbol_formatting&, bool)
{ {
if (Idx > 0) out = print_separator<CharT>(out, fmt); return out;
return unit_symbol_impl<CharT>(out, m, fmt, negative_power);
} }
template<typename CharT, std::output_iterator<CharT> Out, DerivedUnitExpr... Ms, std::size_t... Idxs> template<typename CharT, std::output_iterator<CharT> Out, DerivedUnitExpr U, DerivedUnitExpr... Rest>
constexpr Out unit_symbol_impl(Out out, const type_list<Ms...>&, std::index_sequence<Idxs...>, constexpr Out unit_symbol_impl(Out out, const type_list<U, Rest...>&, const unit_symbol_formatting& fmt,
const unit_symbol_formatting& fmt, bool negative_power) bool negative_power)
{ {
return (..., (out = unit_symbol_impl<CharT>(out, Ms{}, Idxs, fmt, negative_power))); return ((out = unit_symbol_impl<CharT>(out, U{}, fmt, negative_power)), ...,
(print_separator<CharT>(out, fmt), out = unit_symbol_impl<CharT>(out, Rest{}, fmt, negative_power)));
} }
template<typename CharT, std::output_iterator<CharT> Out, DerivedUnitExpr... Nums, DerivedUnitExpr... Dens> template<typename CharT, std::output_iterator<CharT> Out, DerivedUnitExpr... Nums, DerivedUnitExpr... Dens>
@@ -878,11 +878,11 @@ constexpr Out unit_symbol_impl(Out out, const type_list<Nums...>& nums, const ty
return out; return out;
} else if constexpr (sizeof...(Dens) == 0) { } else if constexpr (sizeof...(Dens) == 0) {
// no denominator // no denominator
return unit_symbol_impl<CharT>(out, nums, std::index_sequence_for<Nums...>(), fmt, false); return unit_symbol_impl<CharT>(out, nums, fmt, false);
} else { } else {
using enum unit_symbol_solidus; using enum unit_symbol_solidus;
if constexpr (sizeof...(Nums) > 0) { if constexpr (sizeof...(Nums) > 0) {
out = unit_symbol_impl<CharT>(out, nums, std::index_sequence_for<Nums...>(), fmt, false); out = unit_symbol_impl<CharT>(out, nums, fmt, false);
} }
if (fmt.solidus == always || (fmt.solidus == one_denominator && sizeof...(Dens) == 1)) { if (fmt.solidus == always || (fmt.solidus == one_denominator && sizeof...(Dens) == 1)) {
@@ -894,7 +894,7 @@ constexpr Out unit_symbol_impl(Out out, const type_list<Nums...>& nums, const ty
if (fmt.solidus == always && sizeof...(Dens) > 1) *out++ = '('; if (fmt.solidus == always && sizeof...(Dens) > 1) *out++ = '(';
const bool negative_power = fmt.solidus == never || (fmt.solidus == one_denominator && sizeof...(Dens) > 1); const bool negative_power = fmt.solidus == never || (fmt.solidus == one_denominator && sizeof...(Dens) > 1);
out = unit_symbol_impl<CharT>(out, dens, std::index_sequence_for<Dens...>(), fmt, negative_power); out = unit_symbol_impl<CharT>(out, dens, fmt, negative_power);
if (fmt.solidus == always && sizeof...(Dens) > 1) *out++ = ')'; if (fmt.solidus == always && sizeof...(Dens) > 1) *out++ = ')';
return out; return out;
} }