forked from enlightenment/efl
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
#ifndef EOLIAN_CXX_TYPE_TRAITS_HH
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#define EOLIAN_CXX_TYPE_TRAITS_HH
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namespace efl { namespace eolian { namespace grammar { namespace type_traits {
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template <typename G>
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struct accepts_tuple : std::false_type {};
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template <typename G>
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struct attributes_needed : std::integral_constant<int, 0> {};
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template <typename G>
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struct attributes_needed<G const> : attributes_needed<G> {};
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template <typename G>
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struct attributes_needed<G&> : attributes_needed<G> {};
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template <typename G>
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struct attributes_needed<G const&> : attributes_needed<G> {};
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template <typename G>
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struct attributes_needed<G volatile> : attributes_needed<G> {};
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template <typename G>
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struct attributes_needed<G volatile&> : attributes_needed<G> {};
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template <typename G>
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struct attributes_needed<G const volatile> : attributes_needed<G> {};
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template <typename G>
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struct attributes_needed<G const volatile&> : attributes_needed<G> {};
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template <typename T>
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struct is_std_tuple : std::false_type {};
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template <typename...Args>
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struct is_std_tuple<std::tuple<Args...> > : std::true_type {};
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template <typename...Args>
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struct is_std_tuple<std::tuple<Args...>&> : std::true_type {};
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template <typename...Args>
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struct is_std_tuple<const std::tuple<Args...> > : std::true_type {};
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template <typename...Args>
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struct is_std_tuple<const std::tuple<Args...>&> : std::true_type {};
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template <typename T, typename Enable = void>
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struct is_explicit_tuple : std::false_type {};
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template <typename T>
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struct is_explicit_tuple<T, typename std::enable_if<is_std_tuple<T>::value>::type> : std::true_type {};
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template <typename T, typename Enable = void>
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struct is_tuple : std::false_type {};
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template <typename T>
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struct is_tuple<T const> : is_tuple<T> {};
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template <typename T>
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struct is_tuple<T const&> : is_tuple<T> {};
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template <typename T>
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struct is_tuple<T const volatile> : is_tuple<T> {};
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template <typename T>
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struct is_tuple<T const volatile&> : is_tuple<T> {};
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template <typename T>
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struct is_tuple<T volatile> : is_tuple<T> {};
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template <typename T>
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struct is_tuple<T volatile&> : is_tuple<T> {};
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template <typename T>
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struct is_tuple<T, typename std::enable_if<!std::is_const<T>::value && is_std_tuple<T>::value>::type> : std::true_type {};
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} } } }
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#endif
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