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Implement find_or_default

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This commit is contained in:
Ken Matsui
2025-01-18 01:15:15 -05:00
parent 499be3c177
commit 4ceba3a8ce
4 changed files with 136 additions and 0 deletions
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31
include/toml11/find.hpp
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@@ -544,5 +544,36 @@ T find_or(const basic_value<TC>& v, const K1& k1, const K2& k2, const K3& k3, co
}
}
// ===========================================================================
// find_or_default<T>(value, key)
template<typename T, typename TC, typename K>
cxx::enable_if_t<std::is_default_constructible<T>::value, T>
find_or_default(const basic_value<TC>& v, K&& k) noexcept(std::is_nothrow_default_constructible<T>::value)
{
try
{
return ::toml::get<T>(v.at(detail::key_cast<TC>(std::forward<K>(k))));
}
catch(...)
{
return T();
}
}
template<typename T, typename TC, typename K1, typename ... Ks>
cxx::enable_if_t<std::is_default_constructible<T>::value, T>
find_or_default(const basic_value<TC>& v, K1&& k1, Ks&& ... keys) noexcept(std::is_nothrow_default_constructible<T>::value)
{
try
{
return find_or_default<T>(v.at(std::forward<K1>(k1)), std::forward<Ks>(keys)...);
}
catch(...)
{
return T();
}
}
} // toml
#endif // TOML11_FIND_HPP