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feat: add default is_std_something

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if std::something does not exist, toml::detail::is_std_something<T>
always returns false
This commit is contained in:
ToruNiina
2025-03-26 23:09:26 +09:00
parent be08ba2be2
commit 37262bbbbe
1 changed files with 8 additions and 3 deletions
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11
include/toml11/traits.hpp
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@@ -165,14 +165,14 @@ struct is_std_tuple_impl<std::tuple<Ts...>> : std::true_type{};
template<typename T> template<typename T>
using is_std_tuple = is_std_tuple_impl<cxx::remove_cvref_t<T>>; using is_std_tuple = is_std_tuple_impl<cxx::remove_cvref_t<T>>;
#if TOML11_CPLUSPLUS_STANDARD_VERSION >= TOML11_CXX17_VALUE #if defined(TOML11_HAS_OPTIONAL)
# if __has_include(<optional>)
template<typename T> struct is_std_optional_impl : std::false_type{}; template<typename T> struct is_std_optional_impl : std::false_type{};
template<typename T> template<typename T>
struct is_std_optional_impl<std::optional<T>> : std::true_type{}; struct is_std_optional_impl<std::optional<T>> : std::true_type{};
template<typename T> template<typename T>
using is_std_optional = is_std_optional_impl<cxx::remove_cvref_t<T>>; using is_std_optional = is_std_optional_impl<cxx::remove_cvref_t<T>>;
# endif // <optional> #else
template<typename T> struct is_std_optional : std::false_type{};
#endif // > C++17 #endif // > C++17
template<typename T> struct is_std_array_impl : std::false_type{}; template<typename T> struct is_std_array_impl : std::false_type{};
@@ -211,6 +211,11 @@ template<typename V, typename S>
struct is_string_view_of : std::false_type {}; struct is_string_view_of : std::false_type {};
template<typename C, typename T> template<typename C, typename T>
struct is_string_view_of<std::basic_string_view<C, T>, std::basic_string<C, T>> : std::true_type {}; struct is_string_view_of<std::basic_string_view<C, T>, std::basic_string<C, T>> : std::true_type {};
#else
template<typename T>
struct is_std_basic_string_view : std::false_type {};
template<typename V, typename S>
struct is_string_view_of : std::false_type {};
#endif #endif
template<typename T> struct is_chrono_duration_impl: std::false_type{}; template<typename T> struct is_chrono_duration_impl: std::false_type{};