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simplify SFINAE in to_toml

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ToruNiina
2018-05-05 13:09:40 +09:00
parent 170b0d6b3f
commit b1a55b1331
1 changed files with 52 additions and 23 deletions
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75
toml/to_toml.hpp
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@@ -5,47 +5,76 @@
namespace toml
{
template<typename T, toml::value_t vT = toml::detail::check_type<T>(),
typename std::enable_if<(vT != toml::value_t::Unknown &&
vT != value_t::Empty), std::nullptr_t>::type = nullptr>
inline toml::value to_toml(T&& x)
template<typename T, typename std::enable_if<
detail::is_exact_toml_type<T>::value, std::nullptr_t>::type = nullptr>
inline value to_toml(const T& x)
{
return toml::value(std::forward<T>(x));
return value(x);
}
template<typename T, toml::value_t vT = toml::detail::check_type<T>(),
typename std::enable_if<(vT == toml::value_t::Unknown) &&
(!toml::detail::is_map<T>::value) &&
toml::detail::is_container<T>::value, std::nullptr_t>::type = nullptr>
toml::value to_toml(T&& x)
template<typename T, typename std::enable_if<detail::conjunction<
detail::negation<detail::is_exact_toml_type<T>>, std::is_integral<T>
>::value, std::nullptr_t>::type = nullptr>
inline value to_toml(const T& x)
{
toml::Array tmp; tmp.reserve(std::distance(std::begin(x), std::end(x)));
return value(::toml::Integer(x));
}
template<typename T, typename std::enable_if<detail::conjunction<
detail::negation<detail::is_exact_toml_type<T>>, std::is_floating_point<T>
>::value, std::nullptr_t>::type = nullptr>
inline value to_toml(const T& x)
{
return value(::toml::Float(x));
}
inline value to_toml(const char* str)
{
return value(::toml::String(str));
}
template<typename T, typename std::enable_if<detail::conjunction<
detail::negation<detail::is_exact_toml_type<T>>, detail::is_container<T>
>::value, std::nullptr_t>::type = nullptr>
value to_toml(const T& x)
{
Array tmp;
tmp.reserve(std::distance(std::begin(x), std::end(x)));
for(auto iter = std::begin(x); iter != std::end(x); ++iter)
{
tmp.emplace_back(*iter);
return toml::value(std::move(tmp));
}
return value(std::move(tmp));
}
template<typename T, toml::value_t vT = toml::detail::check_type<T>(),
typename std::enable_if<(vT == toml::value_t::Unknown) &&
toml::detail::is_map<T>::value, std::nullptr_t>::type = nullptr>
toml::value to_toml(T&& x)
template<typename T, typename std::enable_if<detail::conjunction<
detail::negation<detail::is_exact_toml_type<T>>, detail::is_map<T>
>::value, std::nullptr_t>::type = nullptr>
value to_toml(const T& x)
{
toml::Table tmp;
Table tmp;
for(auto iter = std::begin(x); iter != std::end(x); ++iter)
{
tmp.emplace(iter->first, to_toml(iter->second));
return toml::value(std::move(tmp));
}
return value(std::move(tmp));
}
template<typename T>
inline toml::value to_toml(std::initializer_list<T> init)
inline value to_toml(std::initializer_list<T> init)
{
return toml::value(std::move(init));
return value(std::move(init));
}
inline toml::value
to_toml(std::initializer_list<std::pair<std::string, toml::value>> init)
inline value to_toml(std::initializer_list<std::pair<std::string, value>> init)
{
return toml::value(std::move(init));
return value(std::move(init));
}
template<typename T>
inline value to_toml(const value& x)
{
return x;
}
} // toml