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feat(#156): add find_or(value, keys..., opt)

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ToruNiina
2021-04-14 11:21:48 +09:00
parent 8bc09d552a
commit ba3d41d913
2 changed files with 77 additions and 0 deletions
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18
toml/get.hpp
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@@ -1033,6 +1033,24 @@ find_or(const basic_value<C, M, V>& v, const toml::key& ky, T&& opt)
return get_or(tab.at(ky), std::forward<T>(opt));
}
template<typename T, typename C,
template<typename ...> class M, template<typename ...> class V,
typename ... Ks>
auto find_or(const basic_value<C, M, V>& v, const toml::key& ky, Ks&& ... keys)
-> decltype(find_or<T>(v, ky, detail::last_one(std::forward<Ks>(keys)...)))
{
if(!v.is_table())
{
return detail::last_one(std::forward<Ks>(keys)...);
}
const auto& tab = v.as_table();
if(tab.count(ky) == 0)
{
return detail::last_one(std::forward<Ks>(keys)...);
}
return find_or(tab.at(ky), std::forward<Ks>(keys)...);
}
// ============================================================================
// expect