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This commit is contained in:
Timur A. Fatkhullin
2026-02-09 23:42:24 +03:00
parent 07cf211b3d
commit 5df3dcf596
5 changed files with 58 additions and 15 deletions
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15
mcc_concepts.h
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@@ -58,10 +58,23 @@ concept mcc_error_c = std::default_initializable<T> && (std::convertible_to<T, b
template <mcc_error_c ErrT, mcc_error_c DefErrT>
DefErrT mcc_deduced_err(ErrT const& err, DefErrT const& default_err)
auto mcc_deduced_err(ErrT const& err, DefErrT const& default_err)
// DefErrT mcc_deduced_err(ErrT const& err, DefErrT const& default_err)
{
if constexpr (std::same_as<ErrT, DefErrT>) {
return err;
} else if constexpr (std::is_error_code_enum_v<DefErrT>) {
if constexpr (std::same_as<ErrT, std::error_code>) {
return err;
} else {
return default_err;
}
} else if constexpr (std::is_error_condition_enum_v<DefErrT>) {
if constexpr (std::same_as<ErrT, std::error_condition>) {
return err;
} else {
return default_err;
}
} else {
return default_err;
}