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add datetimes to chrono

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This commit is contained in:
ToruNiina 2018-12-10 22:06:06 +09:00
parent 0759e757ae
commit 75c136924b
1 changed files with 40 additions and 1 deletions
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41
toml/get.hpp
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@ -80,9 +80,48 @@ inline std::string get(value&& v)
return std::move(v.cast<value_t::String>().str);
}
// ============================================================================
// std::chrono::duration from toml::local_time.
template<typename T, typename std::enable_if<
detail::is_chrono_duration<T>::value, std::nullptr_t>::type = nullptr>
inline T get(value& v)
{
return std::chrono::duration_cast<T>(
std::chrono::microseconds(v.cast<value_t::LocalTime>()));
}
// ============================================================================
// forward declaration. ignore this.
// std::chrono::system_clock::time_point from toml::datetime variants
template<typename T, typename std::enable_if<
std::is_same<std::chrono::system_clock::time_point, T>::value,
std::nullptr_t>::type = nullptr>
inline T get(value& v)
{
switch(v.type())
{
case value_t::LocalDate:
{
return std::chrono::system_clock::time_point(
v.cast<value_t::LocalDate>());
}
case value_t::LocalDatetime:
{
return std::chrono::system_clock::time_point(
v.cast<value_t::LocalDatetime>());
}
default:
{
return std::chrono::system_clock::time_point(
v.cast<value_t::OffsetDatetime>());
}
}
}
// ============================================================================
// forward declaration to use this recursively. ignore this and go ahead.
template<typename T, typename std::enable_if<detail::conjunction<
detail::is_container<T>, // T is container
detail::has_resize_method<T>, // T::resize(N) works