diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/type_traits')
| -rw-r--r-- | contrib/llvm-project/libcxx/include/type_traits | 3857 |
1 files changed, 124 insertions, 3733 deletions
diff --git a/contrib/llvm-project/libcxx/include/type_traits b/contrib/llvm-project/libcxx/include/type_traits index 3391999675a0..466aeb6e0ddd 100644 --- a/contrib/llvm-project/libcxx/include/type_traits +++ b/contrib/llvm-project/libcxx/include/type_traits @@ -51,7 +51,7 @@ namespace std template <class T> struct is_arithmetic; template <class T> struct is_fundamental; template <class T> struct is_member_pointer; - template <class T> struct is_scoped_enum; // C++2b + template <class T> struct is_scoped_enum; // C++23 template <class T> struct is_scalar; template <class T> struct is_object; template <class T> struct is_compound; @@ -158,8 +158,8 @@ namespace std // Alignment properties and transformations: template <class T> struct alignment_of; template <size_t Len, size_t Align = most_stringent_alignment_requirement> - struct aligned_storage; - template <size_t Len, class... Types> struct aligned_union; + struct aligned_storage; // deprecated in C++23 + template <size_t Len, class... Types> struct aligned_union; // deprecated in C++23 template <class T> struct remove_cvref; // C++20 template <class T> struct decay; @@ -286,7 +286,7 @@ namespace std template <class T> inline constexpr bool is_member_pointer_v = is_member_pointer<T>::value; // C++17 template <class T> inline constexpr bool is_scoped_enum_v - = is_scoped_enum<T>::value; // C++2b + = is_scoped_enum<T>::value; // C++23 // See C++14 20.10.4.3, type properties template <class T> inline constexpr bool is_const_v @@ -416,3740 +416,131 @@ namespace std } */ +#include <__assert> // all public C++ headers provide the assertion handler #include <__config> +#include <__fwd/hash.h> // This is https://llvm.org/PR56938 +#include <__type_traits/add_const.h> +#include <__type_traits/add_cv.h> +#include <__type_traits/add_lvalue_reference.h> +#include <__type_traits/add_pointer.h> +#include <__type_traits/add_rvalue_reference.h> +#include <__type_traits/add_volatile.h> +#include <__type_traits/aligned_storage.h> +#include <__type_traits/aligned_union.h> +#include <__type_traits/alignment_of.h> +#include <__type_traits/apply_cv.h> +#include <__type_traits/can_extract_key.h> +#include <__type_traits/common_reference.h> +#include <__type_traits/common_type.h> +#include <__type_traits/conditional.h> +#include <__type_traits/conjunction.h> +#include <__type_traits/decay.h> +#include <__type_traits/dependent_type.h> +#include <__type_traits/disjunction.h> +#include <__type_traits/enable_if.h> +#include <__type_traits/extent.h> +#include <__type_traits/has_unique_object_representation.h> +#include <__type_traits/has_virtual_destructor.h> +#include <__type_traits/integral_constant.h> +#include <__type_traits/invoke.h> +#include <__type_traits/is_abstract.h> +#include <__type_traits/is_aggregate.h> +#include <__type_traits/is_arithmetic.h> +#include <__type_traits/is_array.h> +#include <__type_traits/is_assignable.h> +#include <__type_traits/is_base_of.h> +#include <__type_traits/is_bounded_array.h> +#include <__type_traits/is_callable.h> +#include <__type_traits/is_char_like_type.h> +#include <__type_traits/is_class.h> +#include <__type_traits/is_compound.h> +#include <__type_traits/is_const.h> +#include <__type_traits/is_constant_evaluated.h> +#include <__type_traits/is_constructible.h> +#include <__type_traits/is_convertible.h> +#include <__type_traits/is_copy_assignable.h> +#include <__type_traits/is_copy_constructible.h> +#include <__type_traits/is_default_constructible.h> +#include <__type_traits/is_destructible.h> +#include <__type_traits/is_empty.h> +#include <__type_traits/is_enum.h> +#include <__type_traits/is_final.h> +#include <__type_traits/is_floating_point.h> +#include <__type_traits/is_function.h> +#include <__type_traits/is_fundamental.h> +#include <__type_traits/is_implicitly_default_constructible.h> +#include <__type_traits/is_integral.h> +#include <__type_traits/is_literal_type.h> +#include <__type_traits/is_member_function_pointer.h> +#include <__type_traits/is_member_object_pointer.h> +#include <__type_traits/is_member_pointer.h> +#include <__type_traits/is_move_assignable.h> +#include <__type_traits/is_move_constructible.h> +#include <__type_traits/is_nothrow_assignable.h> +#include <__type_traits/is_nothrow_constructible.h> +#include <__type_traits/is_nothrow_convertible.h> +#include <__type_traits/is_nothrow_copy_assignable.h> +#include <__type_traits/is_nothrow_copy_constructible.h> +#include <__type_traits/is_nothrow_default_constructible.h> +#include <__type_traits/is_nothrow_destructible.h> +#include <__type_traits/is_nothrow_move_assignable.h> +#include <__type_traits/is_nothrow_move_constructible.h> +#include <__type_traits/is_null_pointer.h> +#include <__type_traits/is_object.h> +#include <__type_traits/is_pod.h> +#include <__type_traits/is_pointer.h> +#include <__type_traits/is_polymorphic.h> +#include <__type_traits/is_reference.h> +#include <__type_traits/is_reference_wrapper.h> +#include <__type_traits/is_referenceable.h> +#include <__type_traits/is_same.h> +#include <__type_traits/is_scalar.h> +#include <__type_traits/is_scoped_enum.h> +#include <__type_traits/is_signed.h> +#include <__type_traits/is_specialization.h> +#include <__type_traits/is_standard_layout.h> +#include <__type_traits/is_swappable.h> +#include <__type_traits/is_trivial.h> +#include <__type_traits/is_trivially_assignable.h> +#include <__type_traits/is_trivially_constructible.h> +#include <__type_traits/is_trivially_copy_assignable.h> +#include <__type_traits/is_trivially_copy_constructible.h> +#include <__type_traits/is_trivially_copyable.h> +#include <__type_traits/is_trivially_default_constructible.h> +#include <__type_traits/is_trivially_destructible.h> +#include <__type_traits/is_trivially_move_assignable.h> +#include <__type_traits/is_trivially_move_constructible.h> +#include <__type_traits/is_unbounded_array.h> +#include <__type_traits/is_union.h> +#include <__type_traits/is_unsigned.h> +#include <__type_traits/is_void.h> +#include <__type_traits/is_volatile.h> +#include <__type_traits/make_const_lvalue_ref.h> +#include <__type_traits/make_signed.h> +#include <__type_traits/make_unsigned.h> +#include <__type_traits/maybe_const.h> +#include <__type_traits/negation.h> +#include <__type_traits/rank.h> +#include <__type_traits/remove_all_extents.h> +#include <__type_traits/remove_const.h> +#include <__type_traits/remove_const_ref.h> +#include <__type_traits/remove_cv.h> +#include <__type_traits/remove_extent.h> +#include <__type_traits/remove_pointer.h> +#include <__type_traits/remove_reference.h> +#include <__type_traits/remove_volatile.h> +#include <__type_traits/result_of.h> +#include <__type_traits/type_identity.h> +#include <__type_traits/underlying_type.h> +#include <__type_traits/unwrap_ref.h> +#include <__type_traits/void_t.h> +#include <__utility/declval.h> #include <cstddef> +#include <cstdint> #include <version> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) -#pragma GCC system_header +# pragma GCC system_header #endif -_LIBCPP_BEGIN_NAMESPACE_STD - -template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS pair; -template <class _Tp> class _LIBCPP_TEMPLATE_VIS reference_wrapper; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash; - -template <class _Tp, _Tp __v> -struct _LIBCPP_TEMPLATE_VIS integral_constant -{ - static _LIBCPP_CONSTEXPR const _Tp value = __v; - typedef _Tp value_type; - typedef integral_constant type; - _LIBCPP_INLINE_VISIBILITY - _LIBCPP_CONSTEXPR operator value_type() const _NOEXCEPT {return value;} -#if _LIBCPP_STD_VER > 11 - _LIBCPP_INLINE_VISIBILITY - constexpr value_type operator ()() const _NOEXCEPT {return value;} -#endif -}; - -template <class _Tp, _Tp __v> -_LIBCPP_CONSTEXPR const _Tp integral_constant<_Tp, __v>::value; - -#if _LIBCPP_STD_VER > 14 -template <bool __b> -using bool_constant = integral_constant<bool, __b>; -#define _LIBCPP_BOOL_CONSTANT(__b) bool_constant<(__b)> -#else -#define _LIBCPP_BOOL_CONSTANT(__b) integral_constant<bool,(__b)> -#endif - -template <bool, class _Tp = void> struct _LIBCPP_TEMPLATE_VIS enable_if {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS enable_if<true, _Tp> {typedef _Tp type;}; - -template <bool _Bp, class _Tp = void> using __enable_if_t _LIBCPP_NODEBUG = typename enable_if<_Bp, _Tp>::type; - -#if _LIBCPP_STD_VER > 11 -template <bool _Bp, class _Tp = void> using enable_if_t = typename enable_if<_Bp, _Tp>::type; -#endif - -typedef _LIBCPP_BOOL_CONSTANT(true) true_type; -typedef _LIBCPP_BOOL_CONSTANT(false) false_type; - -template <bool _Val> -using _BoolConstant _LIBCPP_NODEBUG = integral_constant<bool, _Val>; - -template <bool> struct _MetaBase; -template <> -struct _MetaBase<true> { - template <class _Tp, class _Up> - using _SelectImpl _LIBCPP_NODEBUG = _Tp; - template <template <class...> class _FirstFn, template <class...> class, class ..._Args> - using _SelectApplyImpl _LIBCPP_NODEBUG = _FirstFn<_Args...>; - template <class _First, class...> - using _FirstImpl _LIBCPP_NODEBUG = _First; - template <class, class _Second, class...> - using _SecondImpl _LIBCPP_NODEBUG = _Second; - template <class _Result, class _First, class ..._Rest> - using _OrImpl _LIBCPP_NODEBUG = typename _MetaBase<_First::value != true && sizeof...(_Rest) != 0>::template _OrImpl<_First, _Rest...>; -}; - -template <> -struct _MetaBase<false> { - template <class _Tp, class _Up> - using _SelectImpl _LIBCPP_NODEBUG = _Up; - template <template <class...> class, template <class...> class _SecondFn, class ..._Args> - using _SelectApplyImpl _LIBCPP_NODEBUG = _SecondFn<_Args...>; - template <class _Result, class ...> - using _OrImpl _LIBCPP_NODEBUG = _Result; -}; -template <bool _Cond, class _IfRes, class _ElseRes> -using _If _LIBCPP_NODEBUG = typename _MetaBase<_Cond>::template _SelectImpl<_IfRes, _ElseRes>; -template <class ..._Rest> -using _Or _LIBCPP_NODEBUG = typename _MetaBase< sizeof...(_Rest) != 0 >::template _OrImpl<false_type, _Rest...>; -template <class _Pred> -struct _Not : _BoolConstant<!_Pred::value> {}; -template <class ..._Args> -using _FirstType _LIBCPP_NODEBUG = typename _MetaBase<(sizeof...(_Args) >= 1)>::template _FirstImpl<_Args...>; -template <class ..._Args> -using _SecondType _LIBCPP_NODEBUG = typename _MetaBase<(sizeof...(_Args) >= 2)>::template _SecondImpl<_Args...>; - -template <class ...> using __expand_to_true = true_type; -template <class ..._Pred> -__expand_to_true<__enable_if_t<_Pred::value>...> __and_helper(int); -template <class ...> -false_type __and_helper(...); -template <class ..._Pred> -using _And _LIBCPP_NODEBUG = decltype(__and_helper<_Pred...>(0)); - -template <template <class...> class _Func, class ..._Args> -struct _Lazy : _Func<_Args...> {}; - -// Member detector base - -template <template <class...> class _Templ, class ..._Args, class = _Templ<_Args...> > -true_type __sfinae_test_impl(int); -template <template <class...> class, class ...> -false_type __sfinae_test_impl(...); - -template <template <class ...> class _Templ, class ..._Args> -using _IsValidExpansion _LIBCPP_NODEBUG = decltype(__sfinae_test_impl<_Templ, _Args...>(0)); - -template <class> -struct __void_t { typedef void type; }; - -template <class _Tp> -struct __identity { typedef _Tp type; }; - -template <class _Tp> -using __identity_t _LIBCPP_NODEBUG = typename __identity<_Tp>::type; - -template <class _Tp, bool> -struct _LIBCPP_TEMPLATE_VIS __dependent_type : public _Tp {}; - - -template <bool _Bp, class _If, class _Then> - struct _LIBCPP_TEMPLATE_VIS conditional {typedef _If type;}; -template <class _If, class _Then> - struct _LIBCPP_TEMPLATE_VIS conditional<false, _If, _Then> {typedef _Then type;}; - -#if _LIBCPP_STD_VER > 11 -template <bool _Bp, class _If, class _Then> using conditional_t = typename conditional<_Bp, _If, _Then>::type; -#endif - -// is_same - -template <class _Tp, class _Up> -struct _LIBCPP_TEMPLATE_VIS is_same : _BoolConstant<__is_same(_Tp, _Up)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class _Up> -inline constexpr bool is_same_v = __is_same(_Tp, _Up); -#endif - -// _IsSame<T,U> has the same effect as is_same<T,U> but instantiates fewer types: -// is_same<A,B> and is_same<C,D> are guaranteed to be different types, but -// _IsSame<A,B> and _IsSame<C,D> are the same type (namely, false_type). -// Neither GCC nor Clang can mangle the __is_same builtin, so _IsSame -// mustn't be directly used anywhere that contributes to name-mangling -// (such as in a dependent return type). - -template <class _Tp, class _Up> -using _IsSame = _BoolConstant<__is_same(_Tp, _Up)>; - -template <class _Tp, class _Up> -using _IsNotSame = _BoolConstant<!__is_same(_Tp, _Up)>; - -template <class _Tp> -using __test_for_primary_template = __enable_if_t< - _IsSame<_Tp, typename _Tp::__primary_template>::value - >; -template <class _Tp> -using __is_primary_template = _IsValidExpansion< - __test_for_primary_template, _Tp - >; - -// helper class - -struct __two {char __lx[2];}; - -// is_const - -#if __has_keyword(__is_const) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_const : _BoolConstant<__is_const(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_const_v = __is_const(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_const : public false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_const<_Tp const> : public true_type {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_const_v = is_const<_Tp>::value; -#endif - -#endif // __has_keyword(__is_const) - -// is_volatile - -#if __has_keyword(__is_volatile) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_volatile : _BoolConstant<__is_volatile(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_volatile_v = __is_volatile(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_volatile : public false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_volatile<_Tp volatile> : public true_type {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_volatile_v = is_volatile<_Tp>::value; -#endif - -#endif // __has_keyword(__is_volatile) - -// remove_const - -#if __has_keyword(__remove_const) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS remove_const {typedef __remove_const(_Tp) type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_const_t = __remove_const(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_const {typedef _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_const<const _Tp> {typedef _Tp type;}; -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_const_t = typename remove_const<_Tp>::type; -#endif - -#endif // __has_keyword(__remove_const) - -// remove_volatile - -#if __has_keyword(__remove_volatile) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS remove_volatile {typedef __remove_volatile(_Tp) type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_volatile_t = __remove_volatile(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_volatile {typedef _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_volatile<volatile _Tp> {typedef _Tp type;}; -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_volatile_t = typename remove_volatile<_Tp>::type; -#endif - -#endif // __has_keyword(__remove_volatile) - -// remove_cv - -#if __has_keyword(__remove_cv) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS remove_cv {typedef __remove_cv(_Tp) type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_cv_t = __remove_cv(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_cv -{typedef typename remove_volatile<typename remove_const<_Tp>::type>::type type;}; -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_cv_t = typename remove_cv<_Tp>::type; -#endif - -#endif // __has_keyword(__remove_cv) - -// is_void - -#if __has_keyword(__is_void) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_void : _BoolConstant<__is_void(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_void_v = __is_void(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_void - : public is_same<typename remove_cv<_Tp>::type, void> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_void_v = is_void<_Tp>::value; -#endif - -#endif // __has_keyword(__is_void) - -// __is_nullptr_t - -template <class _Tp> struct __is_nullptr_t_impl : public false_type {}; -template <> struct __is_nullptr_t_impl<nullptr_t> : public true_type {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS __is_nullptr_t - : public __is_nullptr_t_impl<typename remove_cv<_Tp>::type> {}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_null_pointer - : public __is_nullptr_t_impl<typename remove_cv<_Tp>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_null_pointer_v = is_null_pointer<_Tp>::value; -#endif -#endif // _LIBCPP_STD_VER > 11 - -// is_integral - -#if __has_keyword(__is_integral) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_integral : _BoolConstant<__is_integral(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_integral_v = __is_integral(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_integral - : public _BoolConstant<__libcpp_is_integral<typename remove_cv<_Tp>::type>::value> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_integral_v = is_integral<_Tp>::value; -#endif - -#endif // __has_keyword(__is_integral) - -// [basic.fundamental] defines five standard signed integer types; -// __int128_t is an extended signed integer type. -// The signed and unsigned integer types, plus bool and the -// five types with "char" in their name, compose the "integral" types. - -template <class _Tp> struct __libcpp_is_signed_integer : public false_type {}; -template <> struct __libcpp_is_signed_integer<signed char> : public true_type {}; -template <> struct __libcpp_is_signed_integer<signed short> : public true_type {}; -template <> struct __libcpp_is_signed_integer<signed int> : public true_type {}; -template <> struct __libcpp_is_signed_integer<signed long> : public true_type {}; -template <> struct __libcpp_is_signed_integer<signed long long> : public true_type {}; -#ifndef _LIBCPP_HAS_NO_INT128 -template <> struct __libcpp_is_signed_integer<__int128_t> : public true_type {}; -#endif - -template <class _Tp> struct __libcpp_is_unsigned_integer : public false_type {}; -template <> struct __libcpp_is_unsigned_integer<unsigned char> : public true_type {}; -template <> struct __libcpp_is_unsigned_integer<unsigned short> : public true_type {}; -template <> struct __libcpp_is_unsigned_integer<unsigned int> : public true_type {}; -template <> struct __libcpp_is_unsigned_integer<unsigned long> : public true_type {}; -template <> struct __libcpp_is_unsigned_integer<unsigned long long> : public true_type {}; -#ifndef _LIBCPP_HAS_NO_INT128 -template <> struct __libcpp_is_unsigned_integer<__uint128_t> : public true_type {}; -#endif - -// is_floating_point -// <concepts> implements __libcpp_floating_point - -template <class _Tp> struct __libcpp_is_floating_point : public false_type {}; -template <> struct __libcpp_is_floating_point<float> : public true_type {}; -template <> struct __libcpp_is_floating_point<double> : public true_type {}; -template <> struct __libcpp_is_floating_point<long double> : public true_type {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_floating_point - : public __libcpp_is_floating_point<typename remove_cv<_Tp>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_floating_point_v = is_floating_point<_Tp>::value; -#endif - -// is_array - -#if __has_keyword(__is_array) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_array : _BoolConstant<__is_array(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_array_v = __is_array(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_array - : public false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_array<_Tp[]> - : public true_type {}; -template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS is_array<_Tp[_Np]> - : public true_type {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_array_v = is_array<_Tp>::value; -#endif - -#endif // __has_keyword(__is_array) - -// is_pointer - -// Before AppleClang 12.0.5, __is_pointer didn't work for Objective-C types. -#if __has_keyword(__is_pointer) && \ - !(defined(_LIBCPP_APPLE_CLANG_VER) && _LIBCPP_APPLE_CLANG_VER < 1205) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_pointer : _BoolConstant<__is_pointer(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_pointer_v = __is_pointer(_Tp); -#endif - -#else // __has_keyword(__is_pointer) - -template <class _Tp> struct __libcpp_is_pointer : public false_type {}; -template <class _Tp> struct __libcpp_is_pointer<_Tp*> : public true_type {}; - -template <class _Tp> struct __libcpp_remove_objc_qualifiers { typedef _Tp type; }; -#if defined(_LIBCPP_HAS_OBJC_ARC) -template <class _Tp> struct __libcpp_remove_objc_qualifiers<_Tp __strong> { typedef _Tp type; }; -template <class _Tp> struct __libcpp_remove_objc_qualifiers<_Tp __weak> { typedef _Tp type; }; -template <class _Tp> struct __libcpp_remove_objc_qualifiers<_Tp __autoreleasing> { typedef _Tp type; }; -template <class _Tp> struct __libcpp_remove_objc_qualifiers<_Tp __unsafe_unretained> { typedef _Tp type; }; -#endif - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_pointer - : public __libcpp_is_pointer<typename __libcpp_remove_objc_qualifiers<typename remove_cv<_Tp>::type>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_pointer_v = is_pointer<_Tp>::value; -#endif - -#endif // __has_keyword(__is_pointer) - -// is_reference - -#if __has_keyword(__is_lvalue_reference) && \ - __has_keyword(__is_rvalue_reference) && \ - __has_keyword(__is_reference) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_lvalue_reference : _BoolConstant<__is_lvalue_reference(_Tp)> { }; - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_rvalue_reference : _BoolConstant<__is_rvalue_reference(_Tp)> { }; - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_reference : _BoolConstant<__is_reference(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_reference_v = __is_reference(_Tp); -template <class _Tp> -inline constexpr bool is_lvalue_reference_v = __is_lvalue_reference(_Tp); -template <class _Tp> -inline constexpr bool is_rvalue_reference_v = __is_rvalue_reference(_Tp); -#endif - -#else // __has_keyword(__is_lvalue_reference) && etc... - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_lvalue_reference : public false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_lvalue_reference<_Tp&> : public true_type {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_rvalue_reference : public false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_rvalue_reference<_Tp&&> : public true_type {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_reference : public false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_reference<_Tp&> : public true_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_reference<_Tp&&> : public true_type {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_reference_v = is_reference<_Tp>::value; - -template <class _Tp> -inline constexpr bool is_lvalue_reference_v = is_lvalue_reference<_Tp>::value; - -template <class _Tp> -inline constexpr bool is_rvalue_reference_v = is_rvalue_reference<_Tp>::value; -#endif - -#endif // __has_keyword(__is_lvalue_reference) && etc... - -// is_union - -#if __has_feature(is_union) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_union - : public integral_constant<bool, __is_union(_Tp)> {}; - -#else - -template <class _Tp> struct __libcpp_union : public false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_union - : public __libcpp_union<typename remove_cv<_Tp>::type> {}; - -#endif - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_union_v = is_union<_Tp>::value; -#endif - -// is_class - -#if __has_feature(is_class) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_class - : public integral_constant<bool, __is_class(_Tp)> {}; - -#else - -namespace __is_class_imp -{ -template <class _Tp> char __test(int _Tp::*); -template <class _Tp> __two __test(...); -} - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_class - : public integral_constant<bool, sizeof(__is_class_imp::__test<_Tp>(0)) == 1 && !is_union<_Tp>::value> {}; - -#endif - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_class_v = is_class<_Tp>::value; -#endif - -// is_function - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_function - : public _BoolConstant< -#ifdef __clang__ - __is_function(_Tp) -#else - !(is_reference<_Tp>::value || is_const<const _Tp>::value) -#endif - > {}; - - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_function_v = is_function<_Tp>::value; -#endif - -template <class _Tp> struct __libcpp_is_member_pointer { - enum { - __is_member = false, - __is_func = false, - __is_obj = false - }; -}; -template <class _Tp, class _Up> struct __libcpp_is_member_pointer<_Tp _Up::*> { - enum { - __is_member = true, - __is_func = is_function<_Tp>::value, - __is_obj = !__is_func, - }; -}; - -#if __has_keyword(__is_member_function_pointer) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_member_function_pointer - : _BoolConstant<__is_member_function_pointer(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_member_function_pointer_v = __is_member_function_pointer(_Tp); -#endif - -#else // __has_keyword(__is_member_function_pointer) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_member_function_pointer - : public _BoolConstant< __libcpp_is_member_pointer<typename remove_cv<_Tp>::type>::__is_func > {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_member_function_pointer_v = is_member_function_pointer<_Tp>::value; -#endif - -#endif // __has_keyword(__is_member_function_pointer) - -// is_member_pointer - -#if __has_keyword(__is_member_pointer) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_member_pointer : _BoolConstant<__is_member_pointer(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_member_pointer_v = __is_member_pointer(_Tp); -#endif - -#else // __has_keyword(__is_member_pointer) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_member_pointer - : public _BoolConstant< __libcpp_is_member_pointer<typename remove_cv<_Tp>::type>::__is_member > {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_member_pointer_v = is_member_pointer<_Tp>::value; -#endif - -#endif // __has_keyword(__is_member_pointer) - -// is_member_object_pointer - -#if __has_keyword(__is_member_object_pointer) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_member_object_pointer - : _BoolConstant<__is_member_object_pointer(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_member_object_pointer_v = __is_member_object_pointer(_Tp); -#endif - -#else // __has_keyword(__is_member_object_pointer) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_member_object_pointer - : public _BoolConstant< __libcpp_is_member_pointer<typename remove_cv<_Tp>::type>::__is_obj > {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_member_object_pointer_v = is_member_object_pointer<_Tp>::value; -#endif - -#endif // __has_keyword(__is_member_object_pointer) - -// is_enum - -#if __has_feature(is_enum) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_enum - : public integral_constant<bool, __is_enum(_Tp)> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_enum_v = __is_enum(_Tp); -#endif - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_enum - : public integral_constant<bool, !is_void<_Tp>::value && - !is_integral<_Tp>::value && - !is_floating_point<_Tp>::value && - !is_array<_Tp>::value && - !is_pointer<_Tp>::value && - !is_reference<_Tp>::value && - !is_member_pointer<_Tp>::value && - !is_union<_Tp>::value && - !is_class<_Tp>::value && - !is_function<_Tp>::value > {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_enum_v = is_enum<_Tp>::value; -#endif - -#endif // __has_feature(is_enum) || defined(_LIBCPP_COMPILER_GCC) - -// is_arithmetic - - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_arithmetic - : public integral_constant<bool, is_integral<_Tp>::value || - is_floating_point<_Tp>::value> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value; -#endif - -// is_fundamental - -// Before Clang 10, __is_fundamental didn't work for nullptr_t. -// In C++03 nullptr_t is library-provided but must still count as "fundamental." -#if __has_keyword(__is_fundamental) && \ - !(defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 1000) && \ - !defined(_LIBCPP_CXX03_LANG) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_fundamental : _BoolConstant<__is_fundamental(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_fundamental_v = __is_fundamental(_Tp); -#endif - -#else // __has_keyword(__is_fundamental) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_fundamental - : public integral_constant<bool, is_void<_Tp>::value || - __is_nullptr_t<_Tp>::value || - is_arithmetic<_Tp>::value> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_fundamental_v = is_fundamental<_Tp>::value; -#endif - -#endif // __has_keyword(__is_fundamental) - -// is_scalar - -// In C++03 nullptr_t is library-provided but must still count as "scalar." -#if __has_keyword(__is_scalar) && !defined(_LIBCPP_CXX03_LANG) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_scalar : _BoolConstant<__is_scalar(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_scalar_v = __is_scalar(_Tp); -#endif - -#else // __has_keyword(__is_scalar) - -template <class _Tp> struct __is_block : false_type {}; -#if defined(_LIBCPP_HAS_EXTENSION_BLOCKS) -template <class _Rp, class ..._Args> struct __is_block<_Rp (^)(_Args...)> : true_type {}; -#endif - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_scalar - : public integral_constant<bool, is_arithmetic<_Tp>::value || - is_member_pointer<_Tp>::value || - is_pointer<_Tp>::value || - __is_nullptr_t<_Tp>::value || - __is_block<_Tp>::value || - is_enum<_Tp>::value > {}; - -template <> struct _LIBCPP_TEMPLATE_VIS is_scalar<nullptr_t> : public true_type {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; -#endif - -#endif // __has_keyword(__is_scalar) - -// is_object - -#if __has_keyword(__is_object) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_object : _BoolConstant<__is_object(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_object_v = __is_object(_Tp); -#endif - -#else // __has_keyword(__is_object) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_object - : public integral_constant<bool, is_scalar<_Tp>::value || - is_array<_Tp>::value || - is_union<_Tp>::value || - is_class<_Tp>::value > {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_object_v = is_object<_Tp>::value; -#endif - -#endif // __has_keyword(__is_object) - -// is_compound - -// >= 11 because in C++03 nullptr isn't actually nullptr -#if __has_keyword(__is_compound) && !defined(_LIBCPP_CXX03_LANG) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_compound : _BoolConstant<__is_compound(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_compound_v = __is_compound(_Tp); -#endif - -#else // __has_keyword(__is_compound) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_compound - : public integral_constant<bool, !is_fundamental<_Tp>::value> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_compound_v = is_compound<_Tp>::value; -#endif - -#endif // __has_keyword(__is_compound) - -// __is_referenceable [defns.referenceable] - -struct __is_referenceable_impl { - template <class _Tp> static _Tp& __test(int); - template <class _Tp> static __two __test(...); -}; - -template <class _Tp> -struct __is_referenceable : integral_constant<bool, - _IsNotSame<decltype(__is_referenceable_impl::__test<_Tp>(0)), __two>::value> {}; - - -// add_const - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_const { - typedef _LIBCPP_NODEBUG const _Tp type; -}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using add_const_t = typename add_const<_Tp>::type; -#endif - -// add_volatile - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_volatile { - typedef _LIBCPP_NODEBUG volatile _Tp type; -}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using add_volatile_t = typename add_volatile<_Tp>::type; -#endif - -// add_cv -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_cv { - typedef _LIBCPP_NODEBUG const volatile _Tp type; -}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using add_cv_t = typename add_cv<_Tp>::type; -#endif - -// remove_reference - -#if __has_keyword(__remove_reference) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS remove_reference { typedef __remove_reference(_Tp) type; }; - -#else // __has_keyword(__remove_reference) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_reference {typedef _LIBCPP_NODEBUG _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_reference<_Tp&> {typedef _LIBCPP_NODEBUG _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_reference<_Tp&&> {typedef _LIBCPP_NODEBUG _Tp type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_reference_t = typename remove_reference<_Tp>::type; -#endif - -#endif // __has_keyword(__remove_reference) - -// add_lvalue_reference - -template <class _Tp, bool = __is_referenceable<_Tp>::value> struct __add_lvalue_reference_impl { typedef _LIBCPP_NODEBUG _Tp type; }; -template <class _Tp > struct __add_lvalue_reference_impl<_Tp, true> { typedef _LIBCPP_NODEBUG _Tp& type; }; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_lvalue_reference -{typedef _LIBCPP_NODEBUG typename __add_lvalue_reference_impl<_Tp>::type type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using add_lvalue_reference_t = typename add_lvalue_reference<_Tp>::type; -#endif - -template <class _Tp, bool = __is_referenceable<_Tp>::value> struct __add_rvalue_reference_impl { typedef _LIBCPP_NODEBUG _Tp type; }; -template <class _Tp > struct __add_rvalue_reference_impl<_Tp, true> { typedef _LIBCPP_NODEBUG _Tp&& type; }; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_rvalue_reference -{typedef _LIBCPP_NODEBUG typename __add_rvalue_reference_impl<_Tp>::type type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using add_rvalue_reference_t = typename add_rvalue_reference<_Tp>::type; -#endif - -// Suppress deprecation notice for volatile-qualified return type resulting -// from volatile-qualified types _Tp. -_LIBCPP_SUPPRESS_DEPRECATED_PUSH -template <class _Tp> _Tp&& __declval(int); -template <class _Tp> _Tp __declval(long); -_LIBCPP_SUPPRESS_DEPRECATED_POP - -template <class _Tp> -decltype(__declval<_Tp>(0)) -declval() _NOEXCEPT; - -// __uncvref - -template <class _Tp> -struct __uncvref { - typedef _LIBCPP_NODEBUG typename remove_cv<typename remove_reference<_Tp>::type>::type type; -}; - -template <class _Tp> -struct __unconstref { - typedef _LIBCPP_NODEBUG typename remove_const<typename remove_reference<_Tp>::type>::type type; -}; - -#ifndef _LIBCPP_CXX03_LANG -template <class _Tp> -using __uncvref_t _LIBCPP_NODEBUG = typename __uncvref<_Tp>::type; -#endif - -// __is_same_uncvref - -template <class _Tp, class _Up> -struct __is_same_uncvref : _IsSame<typename __uncvref<_Tp>::type, - typename __uncvref<_Up>::type> {}; - -#if _LIBCPP_STD_VER > 17 -// remove_cvref - same as __uncvref -template <class _Tp> -struct remove_cvref : public __uncvref<_Tp> {}; - -template <class _Tp> using remove_cvref_t = typename remove_cvref<_Tp>::type; -#endif - - -struct __any -{ - __any(...); -}; - -// remove_pointer - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer {typedef _LIBCPP_NODEBUG _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp*> {typedef _LIBCPP_NODEBUG _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp* const> {typedef _LIBCPP_NODEBUG _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp* volatile> {typedef _LIBCPP_NODEBUG _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp* const volatile> {typedef _LIBCPP_NODEBUG _Tp type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_pointer_t = typename remove_pointer<_Tp>::type; -#endif - -// add_pointer - -template <class _Tp, - bool = __is_referenceable<_Tp>::value || - _IsSame<typename remove_cv<_Tp>::type, void>::value> -struct __add_pointer_impl - {typedef _LIBCPP_NODEBUG typename remove_reference<_Tp>::type* type;}; -template <class _Tp> struct __add_pointer_impl<_Tp, false> - {typedef _LIBCPP_NODEBUG _Tp type;}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_pointer - {typedef _LIBCPP_NODEBUG typename __add_pointer_impl<_Tp>::type type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using add_pointer_t = typename add_pointer<_Tp>::type; -#endif - -// type_identity -#if _LIBCPP_STD_VER > 17 -template<class _Tp> struct type_identity { typedef _Tp type; }; -template<class _Tp> using type_identity_t = typename type_identity<_Tp>::type; -#endif - -// is_signed - -#if __has_keyword(__is_signed) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_signed : _BoolConstant<__is_signed(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_signed_v = __is_signed(_Tp); -#endif - -#else // __has_keyword(__is_signed) - -template <class _Tp, bool = is_integral<_Tp>::value> -struct __libcpp_is_signed_impl : public _LIBCPP_BOOL_CONSTANT(_Tp(-1) < _Tp(0)) {}; - -template <class _Tp> -struct __libcpp_is_signed_impl<_Tp, false> : public true_type {}; // floating point - -template <class _Tp, bool = is_arithmetic<_Tp>::value> -struct __libcpp_is_signed : public __libcpp_is_signed_impl<_Tp> {}; - -template <class _Tp> struct __libcpp_is_signed<_Tp, false> : public false_type {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_signed : public __libcpp_is_signed<_Tp> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_signed_v = is_signed<_Tp>::value; -#endif - -#endif // __has_keyword(__is_signed) - -// is_unsigned - -// Before Clang 13, __is_unsigned returned true for enums with signed underlying type. -// No currently-released version of AppleClang contains the fixed intrinsic. -#if __has_keyword(__is_unsigned) && \ - !(defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 1300) && \ - !defined(_LIBCPP_APPLE_CLANG_VER) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_unsigned : _BoolConstant<__is_unsigned(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_unsigned_v = __is_unsigned(_Tp); -#endif - -#else // __has_keyword(__is_unsigned) - -template <class _Tp, bool = is_integral<_Tp>::value> -struct __libcpp_is_unsigned_impl : public _LIBCPP_BOOL_CONSTANT(_Tp(0) < _Tp(-1)) {}; - -template <class _Tp> -struct __libcpp_is_unsigned_impl<_Tp, false> : public false_type {}; // floating point - -template <class _Tp, bool = is_arithmetic<_Tp>::value> -struct __libcpp_is_unsigned : public __libcpp_is_unsigned_impl<_Tp> {}; - -template <class _Tp> struct __libcpp_is_unsigned<_Tp, false> : public false_type {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_unsigned : public __libcpp_is_unsigned<_Tp> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_unsigned_v = is_unsigned<_Tp>::value; -#endif - -#endif // __has_keyword(__is_unsigned) - -// rank - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS rank - : public integral_constant<size_t, 0> {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS rank<_Tp[]> - : public integral_constant<size_t, rank<_Tp>::value + 1> {}; -template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS rank<_Tp[_Np]> - : public integral_constant<size_t, rank<_Tp>::value + 1> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr size_t rank_v = rank<_Tp>::value; -#endif - -// extent - -#if __has_keyword(__array_extent) - -template<class _Tp, size_t _Dim = 0> -struct _LIBCPP_TEMPLATE_VIS extent - : integral_constant<size_t, __array_extent(_Tp, _Dim)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, unsigned _Ip = 0> -inline constexpr size_t extent_v = __array_extent(_Tp, _Ip); -#endif - -#else // __has_keyword(__array_extent) - -template <class _Tp, unsigned _Ip = 0> struct _LIBCPP_TEMPLATE_VIS extent - : public integral_constant<size_t, 0> {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[], 0> - : public integral_constant<size_t, 0> {}; -template <class _Tp, unsigned _Ip> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[], _Ip> - : public integral_constant<size_t, extent<_Tp, _Ip-1>::value> {}; -template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[_Np], 0> - : public integral_constant<size_t, _Np> {}; -template <class _Tp, size_t _Np, unsigned _Ip> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[_Np], _Ip> - : public integral_constant<size_t, extent<_Tp, _Ip-1>::value> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, unsigned _Ip = 0> -inline constexpr size_t extent_v = extent<_Tp, _Ip>::value; -#endif - -#endif // __has_keyword(__array_extent) - -// remove_extent - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_extent - {typedef _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_extent<_Tp[]> - {typedef _Tp type;}; -template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS remove_extent<_Tp[_Np]> - {typedef _Tp type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_extent_t = typename remove_extent<_Tp>::type; -#endif - -// remove_all_extents - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_all_extents - {typedef _Tp type;}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_all_extents<_Tp[]> - {typedef typename remove_all_extents<_Tp>::type type;}; -template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS remove_all_extents<_Tp[_Np]> - {typedef typename remove_all_extents<_Tp>::type type;}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using remove_all_extents_t = typename remove_all_extents<_Tp>::type; -#endif - -#if _LIBCPP_STD_VER > 17 -// is_bounded_array - -template <class> struct _LIBCPP_TEMPLATE_VIS is_bounded_array : false_type {}; -template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS is_bounded_array<_Tp[_Np]> : true_type {}; - -template <class _Tp> -inline constexpr -bool is_bounded_array_v = is_bounded_array<_Tp>::value; - -// is_unbounded_array - -template <class> struct _LIBCPP_TEMPLATE_VIS is_unbounded_array : false_type {}; -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_unbounded_array<_Tp[]> : true_type {}; - -template <class _Tp> -inline constexpr -bool is_unbounded_array_v = is_unbounded_array<_Tp>::value; -#endif - -// decay - -template <class _Up, bool> -struct __decay { - typedef _LIBCPP_NODEBUG typename remove_cv<_Up>::type type; -}; - -template <class _Up> -struct __decay<_Up, true> { -public: - typedef _LIBCPP_NODEBUG typename conditional - < - is_array<_Up>::value, - typename remove_extent<_Up>::type*, - typename conditional - < - is_function<_Up>::value, - typename add_pointer<_Up>::type, - typename remove_cv<_Up>::type - >::type - >::type type; -}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS decay -{ -private: - typedef _LIBCPP_NODEBUG typename remove_reference<_Tp>::type _Up; -public: - typedef _LIBCPP_NODEBUG typename __decay<_Up, __is_referenceable<_Up>::value>::type type; -}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using decay_t = typename decay<_Tp>::type; -#endif - -// is_abstract - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_abstract - : public integral_constant<bool, __is_abstract(_Tp)> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_abstract_v = is_abstract<_Tp>::value; -#endif - -// is_final - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS -__libcpp_is_final : public integral_constant<bool, __is_final(_Tp)> {}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS -is_final : public integral_constant<bool, __is_final(_Tp)> {}; -#endif - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_final_v = is_final<_Tp>::value; -#endif - -// is_aggregate -#if _LIBCPP_STD_VER > 14 - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS -is_aggregate : public integral_constant<bool, __is_aggregate(_Tp)> {}; - -template <class _Tp> -inline constexpr bool is_aggregate_v = is_aggregate<_Tp>::value; - -#endif // _LIBCPP_STD_VER > 14 - -// is_base_of - -template <class _Bp, class _Dp> -struct _LIBCPP_TEMPLATE_VIS is_base_of - : public integral_constant<bool, __is_base_of(_Bp, _Dp)> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Bp, class _Dp> -inline constexpr bool is_base_of_v = is_base_of<_Bp, _Dp>::value; -#endif - -// __is_core_convertible - -// [conv.general]/3 says "E is convertible to T" whenever "T t=E;" is well-formed. -// We can't test for that, but we can test implicit convertibility by passing it -// to a function. Notice that __is_core_convertible<void,void> is false, -// and __is_core_convertible<immovable-type,immovable-type> is true in C++17 and later. - -template <class _Tp, class _Up, class = void> -struct __is_core_convertible : public false_type {}; - -template <class _Tp, class _Up> -struct __is_core_convertible<_Tp, _Up, decltype( - static_cast<void(*)(_Up)>(0) ( static_cast<_Tp(*)()>(0)() ) -)> : public true_type {}; - -// is_convertible - -#if __has_feature(is_convertible_to) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) - -template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS is_convertible - : public integral_constant<bool, __is_convertible_to(_T1, _T2)> {}; - -#else // __has_feature(is_convertible_to) - -namespace __is_convertible_imp -{ -template <class _Tp> void __test_convert(_Tp); - -template <class _From, class _To, class = void> -struct __is_convertible_test : public false_type {}; - -template <class _From, class _To> -struct __is_convertible_test<_From, _To, - decltype(__is_convertible_imp::__test_convert<_To>(declval<_From>()))> : public true_type -{}; - -template <class _Tp, bool _IsArray = is_array<_Tp>::value, - bool _IsFunction = is_function<_Tp>::value, - bool _IsVoid = is_void<_Tp>::value> - struct __is_array_function_or_void {enum {value = 0};}; -template <class _Tp> struct __is_array_function_or_void<_Tp, true, false, false> {enum {value = 1};}; -template <class _Tp> struct __is_array_function_or_void<_Tp, false, true, false> {enum {value = 2};}; -template <class _Tp> struct __is_array_function_or_void<_Tp, false, false, true> {enum {value = 3};}; -} - -template <class _Tp, - unsigned = __is_convertible_imp::__is_array_function_or_void<typename remove_reference<_Tp>::type>::value> -struct __is_convertible_check -{ - static const size_t __v = 0; -}; - -template <class _Tp> -struct __is_convertible_check<_Tp, 0> -{ - static const size_t __v = sizeof(_Tp); -}; - -template <class _T1, class _T2, - unsigned _T1_is_array_function_or_void = __is_convertible_imp::__is_array_function_or_void<_T1>::value, - unsigned _T2_is_array_function_or_void = __is_convertible_imp::__is_array_function_or_void<_T2>::value> -struct __is_convertible - : public integral_constant<bool, - __is_convertible_imp::__is_convertible_test<_T1, _T2>::value - > -{}; - -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 0, 1> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 1, 1> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 2, 1> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 3, 1> : public false_type {}; - -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 0, 2> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 1, 2> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 2, 2> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 3, 2> : public false_type {}; - -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 0, 3> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 1, 3> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 2, 3> : public false_type {}; -template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 3, 3> : public true_type {}; - -template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS is_convertible - : public __is_convertible<_T1, _T2> -{ - static const size_t __complete_check1 = __is_convertible_check<_T1>::__v; - static const size_t __complete_check2 = __is_convertible_check<_T2>::__v; -}; - -#endif // __has_feature(is_convertible_to) - -#if _LIBCPP_STD_VER > 14 -template <class _From, class _To> -inline constexpr bool is_convertible_v = is_convertible<_From, _To>::value; -#endif - -// is_nothrow_convertible - -#if _LIBCPP_STD_VER > 17 - -template <typename _Tp> -static void __test_noexcept(_Tp) noexcept; - -template<typename _Fm, typename _To> -static bool_constant<noexcept(_VSTD::__test_noexcept<_To>(declval<_Fm>()))> -__is_nothrow_convertible_test(); - -template <typename _Fm, typename _To> -struct __is_nothrow_convertible_helper: decltype(__is_nothrow_convertible_test<_Fm, _To>()) -{ }; - -template <typename _Fm, typename _To> -struct is_nothrow_convertible : _Or< - _And<is_void<_To>, is_void<_Fm>>, - _Lazy<_And, is_convertible<_Fm, _To>, __is_nothrow_convertible_helper<_Fm, _To>> ->::type { }; - -template <typename _Fm, typename _To> -inline constexpr bool is_nothrow_convertible_v = is_nothrow_convertible<_Fm, _To>::value; - -#endif // _LIBCPP_STD_VER > 17 - -// is_empty - -#if __has_feature(is_empty) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_empty - : public integral_constant<bool, __is_empty(_Tp)> {}; - -#else // __has_feature(is_empty) - -template <class _Tp> -struct __is_empty1 - : public _Tp -{ - double __lx; -}; - -struct __is_empty2 -{ - double __lx; -}; - -template <class _Tp, bool = is_class<_Tp>::value> -struct __libcpp_empty : public integral_constant<bool, sizeof(__is_empty1<_Tp>) == sizeof(__is_empty2)> {}; - -template <class _Tp> struct __libcpp_empty<_Tp, false> : public false_type {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_empty : public __libcpp_empty<_Tp> {}; - -#endif // __has_feature(is_empty) - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_empty_v = is_empty<_Tp>::value; -#endif - -// is_polymorphic - -#if __has_feature(is_polymorphic) || defined(_LIBCPP_COMPILER_MSVC) - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_polymorphic - : public integral_constant<bool, __is_polymorphic(_Tp)> {}; - -#else - -template<typename _Tp> char &__is_polymorphic_impl( - typename enable_if<sizeof((_Tp*)dynamic_cast<const volatile void*>(declval<_Tp*>())) != 0, - int>::type); -template<typename _Tp> __two &__is_polymorphic_impl(...); - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_polymorphic - : public integral_constant<bool, sizeof(__is_polymorphic_impl<_Tp>(0)) == 1> {}; - -#endif // __has_feature(is_polymorphic) - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_polymorphic_v = is_polymorphic<_Tp>::value; -#endif - -// has_virtual_destructor - -#if __has_feature(has_virtual_destructor) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS has_virtual_destructor - : public integral_constant<bool, __has_virtual_destructor(_Tp)> {}; - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS has_virtual_destructor - : public false_type {}; - -#endif - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool has_virtual_destructor_v = has_virtual_destructor<_Tp>::value; -#endif - -// has_unique_object_representations - -#if _LIBCPP_STD_VER > 14 - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS has_unique_object_representations - : public integral_constant<bool, - __has_unique_object_representations(remove_cv_t<remove_all_extents_t<_Tp>>)> {}; - -template <class _Tp> -inline constexpr bool has_unique_object_representations_v = has_unique_object_representations<_Tp>::value; - -#endif - -// alignment_of - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS alignment_of - : public integral_constant<size_t, _LIBCPP_ALIGNOF(_Tp)> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr size_t alignment_of_v = alignment_of<_Tp>::value; -#endif - -// aligned_storage - -template <class _Hp, class _Tp> -struct __type_list -{ - typedef _Hp _Head; - typedef _Tp _Tail; -}; - -struct __nat -{ -#ifndef _LIBCPP_CXX03_LANG - __nat() = delete; - __nat(const __nat&) = delete; - __nat& operator=(const __nat&) = delete; - ~__nat() = delete; -#endif -}; - -template <class _Tp> -struct __align_type -{ - static const size_t value = _LIBCPP_PREFERRED_ALIGNOF(_Tp); - typedef _Tp type; -}; - -struct __struct_double {long double __lx;}; -struct __struct_double4 {double __lx[4];}; - -typedef - __type_list<__align_type<unsigned char>, - __type_list<__align_type<unsigned short>, - __type_list<__align_type<unsigned int>, - __type_list<__align_type<unsigned long>, - __type_list<__align_type<unsigned long long>, - __type_list<__align_type<double>, - __type_list<__align_type<long double>, - __type_list<__align_type<__struct_double>, - __type_list<__align_type<__struct_double4>, - __type_list<__align_type<int*>, - __nat - > > > > > > > > > > __all_types; - -template <size_t _Align> -struct _ALIGNAS(_Align) __fallback_overaligned {}; - -template <class _TL, size_t _Align> struct __find_pod; - -template <class _Hp, size_t _Align> -struct __find_pod<__type_list<_Hp, __nat>, _Align> -{ - typedef typename conditional< - _Align == _Hp::value, - typename _Hp::type, - __fallback_overaligned<_Align> - >::type type; -}; - -template <class _Hp, class _Tp, size_t _Align> -struct __find_pod<__type_list<_Hp, _Tp>, _Align> -{ - typedef typename conditional< - _Align == _Hp::value, - typename _Hp::type, - typename __find_pod<_Tp, _Align>::type - >::type type; -}; - -template <class _TL, size_t _Len> struct __find_max_align; - -template <class _Hp, size_t _Len> -struct __find_max_align<__type_list<_Hp, __nat>, _Len> : public integral_constant<size_t, _Hp::value> {}; - -template <size_t _Len, size_t _A1, size_t _A2> -struct __select_align -{ -private: - static const size_t __min = _A2 < _A1 ? _A2 : _A1; - static const size_t __max = _A1 < _A2 ? _A2 : _A1; -public: - static const size_t value = _Len < __max ? __min : __max; -}; - -template <class _Hp, class _Tp, size_t _Len> -struct __find_max_align<__type_list<_Hp, _Tp>, _Len> - : public integral_constant<size_t, __select_align<_Len, _Hp::value, __find_max_align<_Tp, _Len>::value>::value> {}; - -template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value> -struct _LIBCPP_TEMPLATE_VIS aligned_storage -{ - typedef typename __find_pod<__all_types, _Align>::type _Aligner; - union type - { - _Aligner __align; - unsigned char __data[(_Len + _Align - 1)/_Align * _Align]; - }; -}; - -#if _LIBCPP_STD_VER > 11 -template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value> - using aligned_storage_t = typename aligned_storage<_Len, _Align>::type; -#endif - -#define _CREATE_ALIGNED_STORAGE_SPECIALIZATION(n) \ -template <size_t _Len>\ -struct _LIBCPP_TEMPLATE_VIS aligned_storage<_Len, n>\ -{\ - struct _ALIGNAS(n) type\ - {\ - unsigned char __lx[(_Len + n - 1)/n * n];\ - };\ -} - -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x8); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x10); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x20); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x40); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x80); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x100); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x200); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x400); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x800); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1000); -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2000); -// PE/COFF does not support alignment beyond 8192 (=0x2000) -#if !defined(_LIBCPP_OBJECT_FORMAT_COFF) -_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4000); -#endif // !defined(_LIBCPP_OBJECT_FORMAT_COFF) - -#undef _CREATE_ALIGNED_STORAGE_SPECIALIZATION - - -// aligned_union - -template <size_t _I0, size_t ..._In> -struct __static_max; - -template <size_t _I0> -struct __static_max<_I0> -{ - static const size_t value = _I0; -}; - -template <size_t _I0, size_t _I1, size_t ..._In> -struct __static_max<_I0, _I1, _In...> -{ - static const size_t value = _I0 >= _I1 ? __static_max<_I0, _In...>::value : - __static_max<_I1, _In...>::value; -}; - -template <size_t _Len, class _Type0, class ..._Types> -struct aligned_union -{ - static const size_t alignment_value = __static_max<_LIBCPP_PREFERRED_ALIGNOF(_Type0), - _LIBCPP_PREFERRED_ALIGNOF(_Types)...>::value; - static const size_t __len = __static_max<_Len, sizeof(_Type0), - sizeof(_Types)...>::value; - typedef typename aligned_storage<__len, alignment_value>::type type; -}; - -#if _LIBCPP_STD_VER > 11 -template <size_t _Len, class ..._Types> using aligned_union_t = typename aligned_union<_Len, _Types...>::type; -#endif - -template <class _Tp> -struct __numeric_type -{ - static void __test(...); - static float __test(float); - static double __test(char); - static double __test(int); - static double __test(unsigned); - static double __test(long); - static double __test(unsigned long); - static double __test(long long); - static double __test(unsigned long long); - static double __test(double); - static long double __test(long double); - - typedef decltype(__test(declval<_Tp>())) type; - static const bool value = _IsNotSame<type, void>::value; -}; - -template <> -struct __numeric_type<void> -{ - static const bool value = true; -}; - -// __promote - -template <class _A1, class _A2 = void, class _A3 = void, - bool = __numeric_type<_A1>::value && - __numeric_type<_A2>::value && - __numeric_type<_A3>::value> -class __promote_imp -{ -public: - static const bool value = false; -}; - -template <class _A1, class _A2, class _A3> -class __promote_imp<_A1, _A2, _A3, true> -{ -private: - typedef typename __promote_imp<_A1>::type __type1; - typedef typename __promote_imp<_A2>::type __type2; - typedef typename __promote_imp<_A3>::type __type3; -public: - typedef decltype(__type1() + __type2() + __type3()) type; - static const bool value = true; -}; - -template <class _A1, class _A2> -class __promote_imp<_A1, _A2, void, true> -{ -private: - typedef typename __promote_imp<_A1>::type __type1; - typedef typename __promote_imp<_A2>::type __type2; -public: - typedef decltype(__type1() + __type2()) type; - static const bool value = true; -}; - -template <class _A1> -class __promote_imp<_A1, void, void, true> -{ -public: - typedef typename __numeric_type<_A1>::type type; - static const bool value = true; -}; - -template <class _A1, class _A2 = void, class _A3 = void> -class __promote : public __promote_imp<_A1, _A2, _A3> {}; - -// make_signed / make_unsigned - -typedef - __type_list<signed char, - __type_list<signed short, - __type_list<signed int, - __type_list<signed long, - __type_list<signed long long, -#ifndef _LIBCPP_HAS_NO_INT128 - __type_list<__int128_t, -#endif - __nat -#ifndef _LIBCPP_HAS_NO_INT128 - > -#endif - > > > > > __signed_types; - -typedef - __type_list<unsigned char, - __type_list<unsigned short, - __type_list<unsigned int, - __type_list<unsigned long, - __type_list<unsigned long long, -#ifndef _LIBCPP_HAS_NO_INT128 - __type_list<__uint128_t, -#endif - __nat -#ifndef _LIBCPP_HAS_NO_INT128 - > -#endif - > > > > > __unsigned_types; - -template <class _TypeList, size_t _Size, bool = _Size <= sizeof(typename _TypeList::_Head)> struct __find_first; - -template <class _Hp, class _Tp, size_t _Size> -struct __find_first<__type_list<_Hp, _Tp>, _Size, true> -{ - typedef _LIBCPP_NODEBUG _Hp type; -}; - -template <class _Hp, class _Tp, size_t _Size> -struct __find_first<__type_list<_Hp, _Tp>, _Size, false> -{ - typedef _LIBCPP_NODEBUG typename __find_first<_Tp, _Size>::type type; -}; - -template <class _Tp, class _Up, bool = is_const<typename remove_reference<_Tp>::type>::value, - bool = is_volatile<typename remove_reference<_Tp>::type>::value> -struct __apply_cv -{ - typedef _LIBCPP_NODEBUG _Up type; -}; - -template <class _Tp, class _Up> -struct __apply_cv<_Tp, _Up, true, false> -{ - typedef _LIBCPP_NODEBUG const _Up type; -}; - -template <class _Tp, class _Up> -struct __apply_cv<_Tp, _Up, false, true> -{ - typedef volatile _Up type; -}; - -template <class _Tp, class _Up> -struct __apply_cv<_Tp, _Up, true, true> -{ - typedef const volatile _Up type; -}; - -template <class _Tp, class _Up> -struct __apply_cv<_Tp&, _Up, false, false> -{ - typedef _Up& type; -}; - -template <class _Tp, class _Up> -struct __apply_cv<_Tp&, _Up, true, false> -{ - typedef const _Up& type; -}; - -template <class _Tp, class _Up> -struct __apply_cv<_Tp&, _Up, false, true> -{ - typedef volatile _Up& type; -}; - -template <class _Tp, class _Up> -struct __apply_cv<_Tp&, _Up, true, true> -{ - typedef const volatile _Up& type; -}; - -template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value> -struct __make_signed {}; - -template <class _Tp> -struct __make_signed<_Tp, true> -{ - typedef typename __find_first<__signed_types, sizeof(_Tp)>::type type; -}; - -template <> struct __make_signed<bool, true> {}; -template <> struct __make_signed< signed short, true> {typedef short type;}; -template <> struct __make_signed<unsigned short, true> {typedef short type;}; -template <> struct __make_signed< signed int, true> {typedef int type;}; -template <> struct __make_signed<unsigned int, true> {typedef int type;}; -template <> struct __make_signed< signed long, true> {typedef long type;}; -template <> struct __make_signed<unsigned long, true> {typedef long type;}; -template <> struct __make_signed< signed long long, true> {typedef long long type;}; -template <> struct __make_signed<unsigned long long, true> {typedef long long type;}; -#ifndef _LIBCPP_HAS_NO_INT128 -template <> struct __make_signed<__int128_t, true> {typedef __int128_t type;}; -template <> struct __make_signed<__uint128_t, true> {typedef __int128_t type;}; -#endif - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS make_signed -{ - typedef typename __apply_cv<_Tp, typename __make_signed<typename remove_cv<_Tp>::type>::type>::type type; -}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using make_signed_t = typename make_signed<_Tp>::type; -#endif - -template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value> -struct __make_unsigned {}; - -template <class _Tp> -struct __make_unsigned<_Tp, true> -{ - typedef typename __find_first<__unsigned_types, sizeof(_Tp)>::type type; -}; - -template <> struct __make_unsigned<bool, true> {}; -template <> struct __make_unsigned< signed short, true> {typedef unsigned short type;}; -template <> struct __make_unsigned<unsigned short, true> {typedef unsigned short type;}; -template <> struct __make_unsigned< signed int, true> {typedef unsigned int type;}; -template <> struct __make_unsigned<unsigned int, true> {typedef unsigned int type;}; -template <> struct __make_unsigned< signed long, true> {typedef unsigned long type;}; -template <> struct __make_unsigned<unsigned long, true> {typedef unsigned long type;}; -template <> struct __make_unsigned< signed long long, true> {typedef unsigned long long type;}; -template <> struct __make_unsigned<unsigned long long, true> {typedef unsigned long long type;}; -#ifndef _LIBCPP_HAS_NO_INT128 -template <> struct __make_unsigned<__int128_t, true> {typedef __uint128_t type;}; -template <> struct __make_unsigned<__uint128_t, true> {typedef __uint128_t type;}; -#endif - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS make_unsigned -{ - typedef typename __apply_cv<_Tp, typename __make_unsigned<typename remove_cv<_Tp>::type>::type>::type type; -}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using make_unsigned_t = typename make_unsigned<_Tp>::type; -#endif - -#ifndef _LIBCPP_CXX03_LANG -template <class _Tp> -_LIBCPP_HIDE_FROM_ABI constexpr -typename make_unsigned<_Tp>::type __to_unsigned_like(_Tp __x) noexcept { - return static_cast<typename make_unsigned<_Tp>::type>(__x); -} -#endif - -#if _LIBCPP_STD_VER > 14 -template <class...> using void_t = void; -#endif - -#if _LIBCPP_STD_VER > 17 -// Let COND_RES(X, Y) be: -template <class _Tp, class _Up> -using __cond_type = decltype(false ? declval<_Tp>() : declval<_Up>()); - -template <class _Tp, class _Up, class = void> -struct __common_type3 {}; - -// sub-bullet 4 - "if COND_RES(CREF(D1), CREF(D2)) denotes a type..." -template <class _Tp, class _Up> -struct __common_type3<_Tp, _Up, void_t<__cond_type<const _Tp&, const _Up&>>> -{ - using type = remove_cvref_t<__cond_type<const _Tp&, const _Up&>>; -}; - -template <class _Tp, class _Up, class = void> -struct __common_type2_imp : __common_type3<_Tp, _Up> {}; -#else -template <class _Tp, class _Up, class = void> -struct __common_type2_imp {}; -#endif - -// sub-bullet 3 - "if decay_t<decltype(false ? declval<D1>() : declval<D2>())> ..." -template <class _Tp, class _Up> -struct __common_type2_imp<_Tp, _Up, - typename __void_t<decltype( - true ? declval<_Tp>() : declval<_Up>() - )>::type> -{ - typedef _LIBCPP_NODEBUG typename decay<decltype( - true ? declval<_Tp>() : declval<_Up>() - )>::type type; -}; - -template <class, class = void> -struct __common_type_impl {}; - -// Clang provides variadic templates in C++03 as an extension. -#if !defined(_LIBCPP_CXX03_LANG) || defined(__clang__) -# define _LIBCPP_OPTIONAL_PACK(...) , __VA_ARGS__ -template <class... _Tp> -struct __common_types; -template <class... _Tp> -struct _LIBCPP_TEMPLATE_VIS common_type; -#else -# define _LIBCPP_OPTIONAL_PACK(...) -struct __no_arg; -template <class _Tp, class _Up, class = __no_arg> -struct __common_types; -template <class _Tp = __no_arg, class _Up = __no_arg, class _Vp = __no_arg, - class _Unused = __no_arg> -struct common_type { - static_assert(sizeof(_Unused) == 0, - "common_type accepts at most 3 arguments in C++03"); -}; -#endif // _LIBCPP_CXX03_LANG - -template <class _Tp, class _Up> -struct __common_type_impl< - __common_types<_Tp, _Up>, - typename __void_t<typename common_type<_Tp, _Up>::type>::type> -{ - typedef typename common_type<_Tp, _Up>::type type; -}; - -template <class _Tp, class _Up, class _Vp _LIBCPP_OPTIONAL_PACK(class... _Rest)> -struct __common_type_impl< - __common_types<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)>, - typename __void_t<typename common_type<_Tp, _Up>::type>::type> - : __common_type_impl<__common_types<typename common_type<_Tp, _Up>::type, - _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)> > { -}; - -// bullet 1 - sizeof...(Tp) == 0 - -template <> -struct _LIBCPP_TEMPLATE_VIS common_type<> {}; - -// bullet 2 - sizeof...(Tp) == 1 - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS common_type<_Tp> - : public common_type<_Tp, _Tp> {}; - -// bullet 3 - sizeof...(Tp) == 2 - -// sub-bullet 1 - "If is_same_v<T1, D1> is false or ..." -template <class _Tp, class _Up> -struct _LIBCPP_TEMPLATE_VIS common_type<_Tp, _Up> - : conditional< - _IsSame<_Tp, typename decay<_Tp>::type>::value && _IsSame<_Up, typename decay<_Up>::type>::value, - __common_type2_imp<_Tp, _Up>, - common_type<typename decay<_Tp>::type, typename decay<_Up>::type> - >::type -{}; - -// bullet 4 - sizeof...(Tp) > 2 - -template <class _Tp, class _Up, class _Vp _LIBCPP_OPTIONAL_PACK(class... _Rest)> -struct _LIBCPP_TEMPLATE_VIS - common_type<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)> - : __common_type_impl< - __common_types<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)> > {}; - -#undef _LIBCPP_OPTIONAL_PACK - -#if _LIBCPP_STD_VER > 11 -template <class ..._Tp> using common_type_t = typename common_type<_Tp...>::type; -#endif - -#if _LIBCPP_STD_VER > 11 -// Let COPYCV(FROM, TO) be an alias for type TO with the addition of FROM's -// top-level cv-qualifiers. -template <class _From, class _To> -struct __copy_cv -{ - using type = _To; -}; - -template <class _From, class _To> -struct __copy_cv<const _From, _To> -{ - using type = add_const_t<_To>; -}; - -template <class _From, class _To> -struct __copy_cv<volatile _From, _To> -{ - using type = add_volatile_t<_To>; -}; - -template <class _From, class _To> -struct __copy_cv<const volatile _From, _To> -{ - using type = add_cv_t<_To>; -}; - -template <class _From, class _To> -using __copy_cv_t = typename __copy_cv<_From, _To>::type; - -template <class _From, class _To> -struct __copy_cvref -{ - using type = __copy_cv_t<_From, _To>; -}; - -template <class _From, class _To> -struct __copy_cvref<_From&, _To> -{ - using type = add_lvalue_reference_t<__copy_cv_t<_From, _To>>; -}; - -template <class _From, class _To> -struct __copy_cvref<_From&&, _To> -{ - using type = add_rvalue_reference_t<__copy_cv_t<_From, _To>>; -}; - -template <class _From, class _To> -using __copy_cvref_t = typename __copy_cvref<_From, _To>::type; - -#endif // _LIBCPP_STD_VER > 11 - -// common_reference -#if !defined(_LIBCPP_HAS_NO_CONCEPTS) -// Let COND_RES(X, Y) be: -template <class _Xp, class _Yp> -using __cond_res = - decltype(false ? declval<_Xp(&)()>()() : declval<_Yp(&)()>()()); - -// Let `XREF(A)` denote a unary alias template `T` such that `T<U>` denotes the same type as `U` -// with the addition of `A`'s cv and reference qualifiers, for a non-reference cv-unqualified type -// `U`. -// [Note: `XREF(A)` is `__xref<A>::template __apply`] -template <class _Tp> -struct __xref { - template<class _Up> - using __apply = __copy_cvref_t<_Tp, _Up>; -}; - -// Given types A and B, let X be remove_reference_t<A>, let Y be remove_reference_t<B>, -// and let COMMON-REF(A, B) be: -template<class _Ap, class _Bp, class _Xp = remove_reference_t<_Ap>, class _Yp = remove_reference_t<_Bp>> -struct __common_ref; - -template<class _Xp, class _Yp> -using __common_ref_t = typename __common_ref<_Xp, _Yp>::__type; - -template<class _Xp, class _Yp> -using __cv_cond_res = __cond_res<__copy_cv_t<_Xp, _Yp>&, __copy_cv_t<_Yp, _Xp>&>; - - -// If A and B are both lvalue reference types, COMMON-REF(A, B) is -// COND-RES(COPYCV(X, Y)&, COPYCV(Y, X)&) if that type exists and is a reference type. -template<class _Ap, class _Bp, class _Xp, class _Yp> -requires requires { typename __cv_cond_res<_Xp, _Yp>; } && is_reference_v<__cv_cond_res<_Xp, _Yp>> -struct __common_ref<_Ap&, _Bp&, _Xp, _Yp> -{ - using __type = __cv_cond_res<_Xp, _Yp>; -}; - -// Otherwise, let C be remove_reference_t<COMMON-REF(X&, Y&)>&&. ... -template <class _Xp, class _Yp> -using __common_ref_C = remove_reference_t<__common_ref_t<_Xp&, _Yp&>>&&; - - -// .... If A and B are both rvalue reference types, C is well-formed, and -// is_convertible_v<A, C> && is_convertible_v<B, C> is true, then COMMON-REF(A, B) is C. -template<class _Ap, class _Bp, class _Xp, class _Yp> -requires - requires { typename __common_ref_C<_Xp, _Yp>; } && - is_convertible_v<_Ap&&, __common_ref_C<_Xp, _Yp>> && - is_convertible_v<_Bp&&, __common_ref_C<_Xp, _Yp>> -struct __common_ref<_Ap&&, _Bp&&, _Xp, _Yp> -{ - using __type = __common_ref_C<_Xp, _Yp>; -}; - -// Otherwise, let D be COMMON-REF(const X&, Y&). ... -template <class _Tp, class _Up> -using __common_ref_D = __common_ref_t<const _Tp&, _Up&>; - -// ... If A is an rvalue reference and B is an lvalue reference and D is well-formed and -// is_convertible_v<A, D> is true, then COMMON-REF(A, B) is D. -template<class _Ap, class _Bp, class _Xp, class _Yp> -requires requires { typename __common_ref_D<_Xp, _Yp>; } && - is_convertible_v<_Ap&&, __common_ref_D<_Xp, _Yp>> -struct __common_ref<_Ap&&, _Bp&, _Xp, _Yp> -{ - using __type = __common_ref_D<_Xp, _Yp>; -}; - -// Otherwise, if A is an lvalue reference and B is an rvalue reference, then -// COMMON-REF(A, B) is COMMON-REF(B, A). -template<class _Ap, class _Bp, class _Xp, class _Yp> -struct __common_ref<_Ap&, _Bp&&, _Xp, _Yp> : __common_ref<_Bp&&, _Ap&> {}; - -// Otherwise, COMMON-REF(A, B) is ill-formed. -template<class _Ap, class _Bp, class _Xp, class _Yp> -struct __common_ref {}; - -// Note C: For the common_reference trait applied to a parameter pack [...] - -template <class...> -struct common_reference; - -template <class... _Types> -using common_reference_t = typename common_reference<_Types...>::type; - -// bullet 1 - sizeof...(T) == 0 -template<> -struct common_reference<> {}; - -// bullet 2 - sizeof...(T) == 1 -template <class _Tp> -struct common_reference<_Tp> -{ - using type = _Tp; -}; - -// bullet 3 - sizeof...(T) == 2 -template <class _Tp, class _Up> struct __common_reference_sub_bullet3; -template <class _Tp, class _Up> struct __common_reference_sub_bullet2 : __common_reference_sub_bullet3<_Tp, _Up> {}; -template <class _Tp, class _Up> struct __common_reference_sub_bullet1 : __common_reference_sub_bullet2<_Tp, _Up> {}; - -// sub-bullet 1 - If T1 and T2 are reference types and COMMON-REF(T1, T2) is well-formed, then -// the member typedef `type` denotes that type. -template <class _Tp, class _Up> struct common_reference<_Tp, _Up> : __common_reference_sub_bullet1<_Tp, _Up> {}; - -template <class _Tp, class _Up> -requires is_reference_v<_Tp> && is_reference_v<_Up> && requires { typename __common_ref_t<_Tp, _Up>; } -struct __common_reference_sub_bullet1<_Tp, _Up> -{ - using type = __common_ref_t<_Tp, _Up>; -}; - -// sub-bullet 2 - Otherwise, if basic_common_reference<remove_cvref_t<T1>, remove_cvref_t<T2>, XREF(T1), XREF(T2)>::type -// is well-formed, then the member typedef `type` denotes that type. -template <class, class, template <class> class, template <class> class> struct basic_common_reference {}; - -template <class _Tp, class _Up> -using __basic_common_reference_t = typename basic_common_reference< - remove_cvref_t<_Tp>, remove_cvref_t<_Up>, - __xref<_Tp>::template __apply, __xref<_Up>::template __apply>::type; - -template <class _Tp, class _Up> -requires requires { typename __basic_common_reference_t<_Tp, _Up>; } -struct __common_reference_sub_bullet2<_Tp, _Up> -{ - using type = __basic_common_reference_t<_Tp, _Up>; -}; - -// sub-bullet 3 - Otherwise, if COND-RES(T1, T2) is well-formed, -// then the member typedef `type` denotes that type. -template <class _Tp, class _Up> -requires requires { typename __cond_res<_Tp, _Up>; } -struct __common_reference_sub_bullet3<_Tp, _Up> -{ - using type = __cond_res<_Tp, _Up>; -}; - - -// sub-bullet 4 & 5 - Otherwise, if common_type_t<T1, T2> is well-formed, -// then the member typedef `type` denotes that type. -// - Otherwise, there shall be no member `type`. -template <class _Tp, class _Up> struct __common_reference_sub_bullet3 : common_type<_Tp, _Up> {}; - -// bullet 4 - If there is such a type `C`, the member typedef type shall denote the same type, if -// any, as `common_reference_t<C, Rest...>`. -template <class _Tp, class _Up, class _Vp, class... _Rest> -requires requires { typename common_reference_t<_Tp, _Up>; } -struct common_reference<_Tp, _Up, _Vp, _Rest...> - : common_reference<common_reference_t<_Tp, _Up>, _Vp, _Rest...> -{}; - -// bullet 5 - Otherwise, there shall be no member `type`. -template <class...> struct common_reference {}; - -#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS) - -// is_assignable - -template<typename, typename _Tp> struct __select_2nd { typedef _LIBCPP_NODEBUG _Tp type; }; - -#if __has_keyword(__is_assignable) - -template<class _Tp, class _Up> -struct _LIBCPP_TEMPLATE_VIS is_assignable : _BoolConstant<__is_assignable(_Tp, _Up)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class _Arg> -inline constexpr bool is_assignable_v = __is_assignable(_Tp, _Arg); -#endif - -#else // __has_keyword(__is_assignable) - -template <class _Tp, class _Arg> -typename __select_2nd<decltype((declval<_Tp>() = declval<_Arg>())), true_type>::type -__is_assignable_test(int); - -template <class, class> -false_type __is_assignable_test(...); - - -template <class _Tp, class _Arg, bool = is_void<_Tp>::value || is_void<_Arg>::value> -struct __is_assignable_imp - : public decltype((_VSTD::__is_assignable_test<_Tp, _Arg>(0))) {}; - -template <class _Tp, class _Arg> -struct __is_assignable_imp<_Tp, _Arg, true> - : public false_type -{ -}; - -template <class _Tp, class _Arg> -struct is_assignable - : public __is_assignable_imp<_Tp, _Arg> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class _Arg> -inline constexpr bool is_assignable_v = is_assignable<_Tp, _Arg>::value; -#endif - -#endif // __has_keyword(__is_assignable) - -// is_copy_assignable - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_copy_assignable - : public is_assignable<typename add_lvalue_reference<_Tp>::type, - typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_copy_assignable_v = is_copy_assignable<_Tp>::value; -#endif - -// is_move_assignable - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_move_assignable - : public is_assignable<typename add_lvalue_reference<_Tp>::type, - typename add_rvalue_reference<_Tp>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_move_assignable_v = is_move_assignable<_Tp>::value; -#endif - -// is_destructible - -#if __has_keyword(__is_destructible) - -template<class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_destructible : _BoolConstant<__is_destructible(_Tp)> { }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_destructible_v = __is_destructible(_Tp); -#endif - -#else // __has_keyword(__is_destructible) - -// if it's a reference, return true -// if it's a function, return false -// if it's void, return false -// if it's an array of unknown bound, return false -// Otherwise, return "declval<_Up&>().~_Up()" is well-formed -// where _Up is remove_all_extents<_Tp>::type - -template <class> -struct __is_destructible_apply { typedef int type; }; - -template <typename _Tp> -struct __is_destructor_wellformed { - template <typename _Tp1> - static char __test ( - typename __is_destructible_apply<decltype(declval<_Tp1&>().~_Tp1())>::type - ); - - template <typename _Tp1> - static __two __test (...); - - static const bool value = sizeof(__test<_Tp>(12)) == sizeof(char); -}; - -template <class _Tp, bool> -struct __destructible_imp; - -template <class _Tp> -struct __destructible_imp<_Tp, false> - : public integral_constant<bool, - __is_destructor_wellformed<typename remove_all_extents<_Tp>::type>::value> {}; - -template <class _Tp> -struct __destructible_imp<_Tp, true> - : public true_type {}; - -template <class _Tp, bool> -struct __destructible_false; - -template <class _Tp> -struct __destructible_false<_Tp, false> : public __destructible_imp<_Tp, is_reference<_Tp>::value> {}; - -template <class _Tp> -struct __destructible_false<_Tp, true> : public false_type {}; - -template <class _Tp> -struct is_destructible - : public __destructible_false<_Tp, is_function<_Tp>::value> {}; - -template <class _Tp> -struct is_destructible<_Tp[]> - : public false_type {}; - -template <> -struct is_destructible<void> - : public false_type {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_destructible_v = is_destructible<_Tp>::value; -#endif - -#endif // __has_keyword(__is_destructible) - -template <class _MP, bool _IsMemberFunctionPtr, bool _IsMemberObjectPtr> -struct __member_pointer_traits_imp -{ -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...), true, false> -{ - typedef _Class _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...), true, false> -{ - typedef _Class _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const, true, false> -{ - typedef _Class const _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const, true, false> -{ - typedef _Class const _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile, true, false> -{ - typedef _Class volatile _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile, true, false> -{ - typedef _Class volatile _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile, true, false> -{ - typedef _Class const volatile _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile, true, false> -{ - typedef _Class const volatile _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -#if __has_feature(cxx_reference_qualified_functions) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &, true, false> -{ - typedef _Class& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &, true, false> -{ - typedef _Class& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&, true, false> -{ - typedef _Class const& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&, true, false> -{ - typedef _Class const& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&, true, false> -{ - typedef _Class volatile& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&, true, false> -{ - typedef _Class volatile& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&, true, false> -{ - typedef _Class const volatile& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&, true, false> -{ - typedef _Class const volatile& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &&, true, false> -{ - typedef _Class&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &&, true, false> -{ - typedef _Class&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&&, true, false> -{ - typedef _Class const&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&&, true, false> -{ - typedef _Class const&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&&, true, false> -{ - typedef _Class volatile&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&&, true, false> -{ - typedef _Class volatile&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&&, true, false> -{ - typedef _Class const volatile&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param...); -}; - -template <class _Rp, class _Class, class ..._Param> -struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&&, true, false> -{ - typedef _Class const volatile&& _ClassType; - typedef _Rp _ReturnType; - typedef _Rp (_FnType) (_Param..., ...); -}; - -#endif // __has_feature(cxx_reference_qualified_functions) || defined(_LIBCPP_COMPILER_GCC) - - -template <class _Rp, class _Class> -struct __member_pointer_traits_imp<_Rp _Class::*, false, true> -{ - typedef _Class _ClassType; - typedef _Rp _ReturnType; -}; - -template <class _MP> -struct __member_pointer_traits - : public __member_pointer_traits_imp<typename remove_cv<_MP>::type, - is_member_function_pointer<_MP>::value, - is_member_object_pointer<_MP>::value> -{ -// typedef ... _ClassType; -// typedef ... _ReturnType; -// typedef ... _FnType; -}; - - -template <class _DecayedFp> -struct __member_pointer_class_type {}; - -template <class _Ret, class _ClassType> -struct __member_pointer_class_type<_Ret _ClassType::*> { - typedef _ClassType type; -}; - -// template <class T, class... Args> struct is_constructible; - -template <class _Tp, class ..._Args> -struct _LIBCPP_TEMPLATE_VIS is_constructible - : public integral_constant<bool, __is_constructible(_Tp, _Args...)> -{ }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class ..._Args> -inline constexpr bool is_constructible_v = is_constructible<_Tp, _Args...>::value; -#endif - -// is_default_constructible - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_default_constructible - : public is_constructible<_Tp> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_default_constructible_v = is_default_constructible<_Tp>::value; -#endif - -#ifndef _LIBCPP_CXX03_LANG -// First of all, we can't implement this check in C++03 mode because the {} -// default initialization syntax isn't valid. -// Second, we implement the trait in a funny manner with two defaulted template -// arguments to workaround Clang's PR43454. -template <class _Tp> -void __test_implicit_default_constructible(_Tp); - -template <class _Tp, class = void, class = typename is_default_constructible<_Tp>::type> -struct __is_implicitly_default_constructible - : false_type -{ }; - -template <class _Tp> -struct __is_implicitly_default_constructible<_Tp, decltype(__test_implicit_default_constructible<_Tp const&>({})), true_type> - : true_type -{ }; - -template <class _Tp> -struct __is_implicitly_default_constructible<_Tp, decltype(__test_implicit_default_constructible<_Tp const&>({})), false_type> - : false_type -{ }; -#endif // !C++03 - -// is_copy_constructible - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_copy_constructible - : public is_constructible<_Tp, - typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_copy_constructible_v = is_copy_constructible<_Tp>::value; -#endif - -// is_move_constructible - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_move_constructible - : public is_constructible<_Tp, typename add_rvalue_reference<_Tp>::type> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_move_constructible_v = is_move_constructible<_Tp>::value; -#endif - -// is_trivially_constructible - -template <class _Tp, class... _Args> -struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible - : integral_constant<bool, __is_trivially_constructible(_Tp, _Args...)> -{ -}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class... _Args> -inline constexpr bool is_trivially_constructible_v = is_trivially_constructible<_Tp, _Args...>::value; -#endif - -// is_trivially_default_constructible - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_default_constructible - : public is_trivially_constructible<_Tp> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivially_default_constructible_v = is_trivially_default_constructible<_Tp>::value; -#endif - -// is_trivially_copy_constructible - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_copy_constructible - : public is_trivially_constructible<_Tp, typename add_lvalue_reference<const _Tp>::type> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivially_copy_constructible_v = is_trivially_copy_constructible<_Tp>::value; -#endif - -// is_trivially_move_constructible - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_move_constructible - : public is_trivially_constructible<_Tp, typename add_rvalue_reference<_Tp>::type> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivially_move_constructible_v = is_trivially_move_constructible<_Tp>::value; -#endif - -// is_trivially_assignable - -template <class _Tp, class _Arg> -struct is_trivially_assignable - : integral_constant<bool, __is_trivially_assignable(_Tp, _Arg)> -{ }; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class _Arg> -inline constexpr bool is_trivially_assignable_v = is_trivially_assignable<_Tp, _Arg>::value; -#endif - -// is_trivially_copy_assignable - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_copy_assignable - : public is_trivially_assignable<typename add_lvalue_reference<_Tp>::type, - typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivially_copy_assignable_v = is_trivially_copy_assignable<_Tp>::value; -#endif - -// is_trivially_move_assignable - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_move_assignable - : public is_trivially_assignable<typename add_lvalue_reference<_Tp>::type, - typename add_rvalue_reference<_Tp>::type> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivially_move_assignable_v = is_trivially_move_assignable<_Tp>::value; -#endif - -// is_trivially_destructible - -#if __has_keyword(__is_trivially_destructible) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_destructible - : public integral_constant<bool, __is_trivially_destructible(_Tp)> {}; - -#elif __has_feature(has_trivial_destructor) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_destructible - : public integral_constant<bool, is_destructible<_Tp>::value && __has_trivial_destructor(_Tp)> {}; - -#else - -template <class _Tp> struct __libcpp_trivial_destructor - : public integral_constant<bool, is_scalar<_Tp>::value || - is_reference<_Tp>::value> {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_destructible - : public __libcpp_trivial_destructor<typename remove_all_extents<_Tp>::type> {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_destructible<_Tp[]> - : public false_type {}; - -#endif - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivially_destructible_v = is_trivially_destructible<_Tp>::value; -#endif - -// is_nothrow_constructible - -#if __has_keyword(__is_nothrow_constructible) - -template <class _Tp, class... _Args> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible - : public integral_constant<bool, __is_nothrow_constructible(_Tp, _Args...)> {}; - -#else - -template <bool, bool, class _Tp, class... _Args> struct __libcpp_is_nothrow_constructible; - -template <class _Tp, class... _Args> -struct __libcpp_is_nothrow_constructible</*is constructible*/true, /*is reference*/false, _Tp, _Args...> - : public integral_constant<bool, noexcept(_Tp(declval<_Args>()...))> -{ -}; - -template <class _Tp> -void __implicit_conversion_to(_Tp) noexcept { } - -template <class _Tp, class _Arg> -struct __libcpp_is_nothrow_constructible</*is constructible*/true, /*is reference*/true, _Tp, _Arg> - : public integral_constant<bool, noexcept(_VSTD::__implicit_conversion_to<_Tp>(declval<_Arg>()))> -{ -}; - -template <class _Tp, bool _IsReference, class... _Args> -struct __libcpp_is_nothrow_constructible</*is constructible*/false, _IsReference, _Tp, _Args...> - : public false_type -{ -}; - -template <class _Tp, class... _Args> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible - : __libcpp_is_nothrow_constructible<is_constructible<_Tp, _Args...>::value, is_reference<_Tp>::value, _Tp, _Args...> -{ -}; - -template <class _Tp, size_t _Ns> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp[_Ns]> - : __libcpp_is_nothrow_constructible<is_constructible<_Tp>::value, is_reference<_Tp>::value, _Tp> -{ -}; - -#endif // _LIBCPP_HAS_NO_NOEXCEPT - - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class ..._Args> -inline constexpr bool is_nothrow_constructible_v = is_nothrow_constructible<_Tp, _Args...>::value; -#endif - -// is_nothrow_default_constructible - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_default_constructible - : public is_nothrow_constructible<_Tp> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_nothrow_default_constructible_v = is_nothrow_default_constructible<_Tp>::value; -#endif - -// is_nothrow_copy_constructible - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_constructible - : public is_nothrow_constructible<_Tp, - typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_nothrow_copy_constructible_v = is_nothrow_copy_constructible<_Tp>::value; -#endif - -// is_nothrow_move_constructible - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_move_constructible - : public is_nothrow_constructible<_Tp, typename add_rvalue_reference<_Tp>::type> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_nothrow_move_constructible_v = is_nothrow_move_constructible<_Tp>::value; -#endif - -// is_nothrow_assignable - -#if __has_keyword(__is_nothrow_assignable) - -template <class _Tp, class _Arg> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_assignable - : public integral_constant<bool, __is_nothrow_assignable(_Tp, _Arg)> {}; - -#else - -template <bool, class _Tp, class _Arg> struct __libcpp_is_nothrow_assignable; - -template <class _Tp, class _Arg> -struct __libcpp_is_nothrow_assignable<false, _Tp, _Arg> - : public false_type -{ -}; - -template <class _Tp, class _Arg> -struct __libcpp_is_nothrow_assignable<true, _Tp, _Arg> - : public integral_constant<bool, noexcept(declval<_Tp>() = declval<_Arg>()) > -{ -}; - -template <class _Tp, class _Arg> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_assignable - : public __libcpp_is_nothrow_assignable<is_assignable<_Tp, _Arg>::value, _Tp, _Arg> -{ -}; - -#endif // _LIBCPP_HAS_NO_NOEXCEPT - -#if _LIBCPP_STD_VER > 14 -template <class _Tp, class _Arg> -inline constexpr bool is_nothrow_assignable_v = is_nothrow_assignable<_Tp, _Arg>::value; -#endif - -// is_nothrow_copy_assignable - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_assignable - : public is_nothrow_assignable<typename add_lvalue_reference<_Tp>::type, - typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_nothrow_copy_assignable_v = is_nothrow_copy_assignable<_Tp>::value; -#endif - -// is_nothrow_move_assignable - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_move_assignable - : public is_nothrow_assignable<typename add_lvalue_reference<_Tp>::type, - typename add_rvalue_reference<_Tp>::type> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_nothrow_move_assignable_v = is_nothrow_move_assignable<_Tp>::value; -#endif - -// is_nothrow_destructible - -#if !defined(_LIBCPP_CXX03_LANG) - -template <bool, class _Tp> struct __libcpp_is_nothrow_destructible; - -template <class _Tp> -struct __libcpp_is_nothrow_destructible<false, _Tp> - : public false_type -{ -}; - -template <class _Tp> -struct __libcpp_is_nothrow_destructible<true, _Tp> - : public integral_constant<bool, noexcept(declval<_Tp>().~_Tp()) > -{ -}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible - : public __libcpp_is_nothrow_destructible<is_destructible<_Tp>::value, _Tp> -{ -}; - -template <class _Tp, size_t _Ns> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp[_Ns]> - : public is_nothrow_destructible<_Tp> -{ -}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp&> - : public true_type -{ -}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp&&> - : public true_type -{ -}; - -#else - -template <class _Tp> struct __libcpp_nothrow_destructor - : public integral_constant<bool, is_scalar<_Tp>::value || - is_reference<_Tp>::value> {}; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible - : public __libcpp_nothrow_destructor<typename remove_all_extents<_Tp>::type> {}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp[]> - : public false_type {}; - -#endif - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_nothrow_destructible_v = is_nothrow_destructible<_Tp>::value; -#endif - -// is_pod - -#if __has_feature(is_pod) || defined(_LIBCPP_COMPILER_GCC) - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_pod - : public integral_constant<bool, __is_pod(_Tp)> {}; - -#else - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_pod - : public integral_constant<bool, is_trivially_default_constructible<_Tp>::value && - is_trivially_copy_constructible<_Tp>::value && - is_trivially_copy_assignable<_Tp>::value && - is_trivially_destructible<_Tp>::value> {}; - -#endif - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_pod_v = is_pod<_Tp>::value; -#endif - -// is_literal_type; - -#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS) -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 is_literal_type - : public integral_constant<bool, __is_literal_type(_Tp)> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -_LIBCPP_DEPRECATED_IN_CXX17 inline constexpr bool is_literal_type_v = is_literal_type<_Tp>::value; -#endif // _LIBCPP_STD_VER > 14 -#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS) - -// is_standard_layout; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_standard_layout -#if __has_feature(is_standard_layout) || defined(_LIBCPP_COMPILER_GCC) - : public integral_constant<bool, __is_standard_layout(_Tp)> -#else - : integral_constant<bool, is_scalar<typename remove_all_extents<_Tp>::type>::value> -#endif - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_standard_layout_v = is_standard_layout<_Tp>::value; -#endif - -// is_trivially_copyable; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_copyable - : public integral_constant<bool, __is_trivially_copyable(_Tp)> - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivially_copyable_v = is_trivially_copyable<_Tp>::value; -#endif - -// is_trivial; - -template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivial -#if __has_feature(is_trivial) || defined(_LIBCPP_COMPILER_GCC) - : public integral_constant<bool, __is_trivial(_Tp)> -#else - : integral_constant<bool, is_trivially_copyable<_Tp>::value && - is_trivially_default_constructible<_Tp>::value> -#endif - {}; - -#if _LIBCPP_STD_VER > 14 -template <class _Tp> -inline constexpr bool is_trivial_v = is_trivial<_Tp>::value; -#endif - -template <class _Tp> struct __is_reference_wrapper_impl : public false_type {}; -template <class _Tp> struct __is_reference_wrapper_impl<reference_wrapper<_Tp> > : public true_type {}; -template <class _Tp> struct __is_reference_wrapper - : public __is_reference_wrapper_impl<typename remove_cv<_Tp>::type> {}; - -#ifndef _LIBCPP_CXX03_LANG - -template <class _Fp, class _A0, - class _DecayFp = typename decay<_Fp>::type, - class _DecayA0 = typename decay<_A0>::type, - class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> -using __enable_if_bullet1 = typename enable_if - < - is_member_function_pointer<_DecayFp>::value - && is_base_of<_ClassT, _DecayA0>::value - >::type; - -template <class _Fp, class _A0, - class _DecayFp = typename decay<_Fp>::type, - class _DecayA0 = typename decay<_A0>::type> -using __enable_if_bullet2 = typename enable_if - < - is_member_function_pointer<_DecayFp>::value - && __is_reference_wrapper<_DecayA0>::value - >::type; - -template <class _Fp, class _A0, - class _DecayFp = typename decay<_Fp>::type, - class _DecayA0 = typename decay<_A0>::type, - class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> -using __enable_if_bullet3 = typename enable_if - < - is_member_function_pointer<_DecayFp>::value - && !is_base_of<_ClassT, _DecayA0>::value - && !__is_reference_wrapper<_DecayA0>::value - >::type; - -template <class _Fp, class _A0, - class _DecayFp = typename decay<_Fp>::type, - class _DecayA0 = typename decay<_A0>::type, - class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> -using __enable_if_bullet4 = typename enable_if - < - is_member_object_pointer<_DecayFp>::value - && is_base_of<_ClassT, _DecayA0>::value - >::type; - -template <class _Fp, class _A0, - class _DecayFp = typename decay<_Fp>::type, - class _DecayA0 = typename decay<_A0>::type> -using __enable_if_bullet5 = typename enable_if - < - is_member_object_pointer<_DecayFp>::value - && __is_reference_wrapper<_DecayA0>::value - >::type; - -template <class _Fp, class _A0, - class _DecayFp = typename decay<_Fp>::type, - class _DecayA0 = typename decay<_A0>::type, - class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> -using __enable_if_bullet6 = typename enable_if - < - is_member_object_pointer<_DecayFp>::value - && !is_base_of<_ClassT, _DecayA0>::value - && !__is_reference_wrapper<_DecayA0>::value - >::type; - -// __invoke forward declarations - -// fall back - none of the bullets - -template <class ..._Args> -auto __invoke(__any, _Args&& ...__args) -> __nat; - -template <class ..._Args> -auto __invoke_constexpr(__any, _Args&& ...__args) -> __nat; - -// bullets 1, 2 and 3 - -template <class _Fp, class _A0, class ..._Args, - class = __enable_if_bullet1<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 auto -__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) - noexcept(noexcept((static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...))) - -> decltype( (static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...)) - { return (static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...); } - -template <class _Fp, class _A0, class ..._Args, - class = __enable_if_bullet1<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR auto -__invoke_constexpr(_Fp&& __f, _A0&& __a0, _Args&& ...__args) - noexcept(noexcept((static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...))) - -> decltype( (static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...)) - { return (static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...); } - -template <class _Fp, class _A0, class ..._Args, - class = __enable_if_bullet2<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 auto -__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) - noexcept(noexcept((__a0.get().*__f)(static_cast<_Args&&>(__args)...))) - -> decltype( (__a0.get().*__f)(static_cast<_Args&&>(__args)...)) - { return (__a0.get().*__f)(static_cast<_Args&&>(__args)...); } - -template <class _Fp, class _A0, class ..._Args, - class = __enable_if_bullet2<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR auto -__invoke_constexpr(_Fp&& __f, _A0&& __a0, _Args&& ...__args) - noexcept(noexcept((__a0.get().*__f)(static_cast<_Args&&>(__args)...))) - -> decltype( (__a0.get().*__f)(static_cast<_Args&&>(__args)...)) - { return (__a0.get().*__f)(static_cast<_Args&&>(__args)...); } - -template <class _Fp, class _A0, class ..._Args, - class = __enable_if_bullet3<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 auto -__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) - noexcept(noexcept(((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...))) - -> decltype( ((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...)) - { return ((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...); } - -template <class _Fp, class _A0, class ..._Args, - class = __enable_if_bullet3<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR auto -__invoke_constexpr(_Fp&& __f, _A0&& __a0, _Args&& ...__args) - noexcept(noexcept(((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...))) - -> decltype( ((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...)) - { return ((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...); } - -// bullets 4, 5 and 6 - -template <class _Fp, class _A0, - class = __enable_if_bullet4<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 auto -__invoke(_Fp&& __f, _A0&& __a0) - noexcept(noexcept(static_cast<_A0&&>(__a0).*__f)) - -> decltype( static_cast<_A0&&>(__a0).*__f) - { return static_cast<_A0&&>(__a0).*__f; } - -template <class _Fp, class _A0, - class = __enable_if_bullet4<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR auto -__invoke_constexpr(_Fp&& __f, _A0&& __a0) - noexcept(noexcept(static_cast<_A0&&>(__a0).*__f)) - -> decltype( static_cast<_A0&&>(__a0).*__f) - { return static_cast<_A0&&>(__a0).*__f; } - -template <class _Fp, class _A0, - class = __enable_if_bullet5<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 auto -__invoke(_Fp&& __f, _A0&& __a0) - noexcept(noexcept(__a0.get().*__f)) - -> decltype( __a0.get().*__f) - { return __a0.get().*__f; } - -template <class _Fp, class _A0, - class = __enable_if_bullet5<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR auto -__invoke_constexpr(_Fp&& __f, _A0&& __a0) - noexcept(noexcept(__a0.get().*__f)) - -> decltype( __a0.get().*__f) - { return __a0.get().*__f; } - -template <class _Fp, class _A0, - class = __enable_if_bullet6<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 auto -__invoke(_Fp&& __f, _A0&& __a0) - noexcept(noexcept((*static_cast<_A0&&>(__a0)).*__f)) - -> decltype( (*static_cast<_A0&&>(__a0)).*__f) - { return (*static_cast<_A0&&>(__a0)).*__f; } - -template <class _Fp, class _A0, - class = __enable_if_bullet6<_Fp, _A0>> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR auto -__invoke_constexpr(_Fp&& __f, _A0&& __a0) - noexcept(noexcept((*static_cast<_A0&&>(__a0)).*__f)) - -> decltype( (*static_cast<_A0&&>(__a0)).*__f) - { return (*static_cast<_A0&&>(__a0)).*__f; } - -// bullet 7 - -template <class _Fp, class ..._Args> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 auto -__invoke(_Fp&& __f, _Args&& ...__args) - noexcept(noexcept(static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...))) - -> decltype( static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...)) - { return static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...); } - -template <class _Fp, class ..._Args> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR auto -__invoke_constexpr(_Fp&& __f, _Args&& ...__args) - noexcept(noexcept(static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...))) - -> decltype( static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...)) - { return static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...); } - -// __invokable -template <class _Ret, class _Fp, class ..._Args> -struct __invokable_r -{ - template <class _XFp, class ..._XArgs> - static auto __try_call(int) -> decltype( - _VSTD::__invoke(declval<_XFp>(), declval<_XArgs>()...)); - template <class _XFp, class ..._XArgs> - static __nat __try_call(...); - - // FIXME: Check that _Ret, _Fp, and _Args... are all complete types, cv void, - // or incomplete array types as required by the standard. - using _Result = decltype(__try_call<_Fp, _Args...>(0)); - - using type = - typename conditional< - _IsNotSame<_Result, __nat>::value, - typename conditional< - is_void<_Ret>::value, - true_type, - is_convertible<_Result, _Ret> - >::type, - false_type - >::type; - static const bool value = type::value; -}; -template <class _Fp, class ..._Args> -using __invokable = __invokable_r<void, _Fp, _Args...>; - -template <bool _IsInvokable, bool _IsCVVoid, class _Ret, class _Fp, class ..._Args> -struct __nothrow_invokable_r_imp { - static const bool value = false; -}; - -template <class _Ret, class _Fp, class ..._Args> -struct __nothrow_invokable_r_imp<true, false, _Ret, _Fp, _Args...> -{ - typedef __nothrow_invokable_r_imp _ThisT; - - template <class _Tp> - static void __test_noexcept(_Tp) noexcept; - - static const bool value = noexcept(_ThisT::__test_noexcept<_Ret>( - _VSTD::__invoke(declval<_Fp>(), declval<_Args>()...))); -}; - -template <class _Ret, class _Fp, class ..._Args> -struct __nothrow_invokable_r_imp<true, true, _Ret, _Fp, _Args...> -{ - static const bool value = noexcept( - _VSTD::__invoke(declval<_Fp>(), declval<_Args>()...)); -}; - -template <class _Ret, class _Fp, class ..._Args> -using __nothrow_invokable_r = - __nothrow_invokable_r_imp< - __invokable_r<_Ret, _Fp, _Args...>::value, - is_void<_Ret>::value, - _Ret, _Fp, _Args... - >; - -template <class _Fp, class ..._Args> -using __nothrow_invokable = - __nothrow_invokable_r_imp< - __invokable<_Fp, _Args...>::value, - true, void, _Fp, _Args... - >; - -template <class _Fp, class ..._Args> -struct __invoke_of - : public enable_if< - __invokable<_Fp, _Args...>::value, - typename __invokable_r<void, _Fp, _Args...>::_Result> -{ -}; - -#endif // _LIBCPP_CXX03_LANG - -// result_of - -#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS) -template <class _Callable> class _LIBCPP_DEPRECATED_IN_CXX17 result_of; - -#ifndef _LIBCPP_CXX03_LANG - -template <class _Fp, class ..._Args> -class _LIBCPP_TEMPLATE_VIS result_of<_Fp(_Args...)> - : public __invoke_of<_Fp, _Args...> -{ -}; - -#else // C++03 - -template <class _Fn, bool, bool> -class __result_of -{ -}; - -template <class _Fn, class ..._Args> -class __result_of<_Fn(_Args...), true, false> -{ -public: - typedef decltype(declval<_Fn>()(declval<_Args>()...)) type; -}; - -template <class _MP, class _Tp, bool _IsMemberFunctionPtr> -struct __result_of_mp; - -// member function pointer - -template <class _MP, class _Tp> -struct __result_of_mp<_MP, _Tp, true> -{ - using type = typename __member_pointer_traits<_MP>::_ReturnType; -}; - -// member data pointer - -template <class _MP, class _Tp, bool> -struct __result_of_mdp; - -template <class _Rp, class _Class, class _Tp> -struct __result_of_mdp<_Rp _Class::*, _Tp, false> -{ - using type = typename __apply_cv<decltype(*declval<_Tp>()), _Rp>::type&; -}; - -template <class _Rp, class _Class, class _Tp> -struct __result_of_mdp<_Rp _Class::*, _Tp, true> -{ - using type = typename __apply_cv<_Tp, _Rp>::type&; -}; - -template <class _Rp, class _Class, class _Tp> -struct __result_of_mp<_Rp _Class::*, _Tp, false> - : public __result_of_mdp<_Rp _Class::*, _Tp, - is_base_of<_Class, typename remove_reference<_Tp>::type>::value> -{ -}; - -template <class _Fn, class _Tp> -class __result_of<_Fn(_Tp), false, true> // _Fn must be member pointer - : public __result_of_mp<typename remove_reference<_Fn>::type, - _Tp, - is_member_function_pointer<typename remove_reference<_Fn>::type>::value> -{ -}; - -template <class _Fn, class _Tp, class ..._Args> -class __result_of<_Fn(_Tp, _Args...), false, true> // _Fn must be member pointer - : public __result_of_mp<typename remove_reference<_Fn>::type, - _Tp, - is_member_function_pointer<typename remove_reference<_Fn>::type>::value> -{ -}; - -template <class _Fn, class ..._Args> -class _LIBCPP_TEMPLATE_VIS result_of<_Fn(_Args...)> - : public __result_of<_Fn(_Args...), - is_class<typename remove_reference<_Fn>::type>::value || - is_function<typename remove_pointer<typename remove_reference<_Fn>::type>::type>::value, - is_member_pointer<typename remove_reference<_Fn>::type>::value - > -{ -}; - -#endif // C++03 - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using result_of_t _LIBCPP_DEPRECATED_IN_CXX17 = typename result_of<_Tp>::type; -#endif // _LIBCPP_STD_VER > 11 -#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS) - -#if _LIBCPP_STD_VER > 14 - -// invoke_result - -template <class _Fn, class... _Args> -struct _LIBCPP_TEMPLATE_VIS invoke_result - : __invoke_of<_Fn, _Args...> -{ -}; - -template <class _Fn, class... _Args> -using invoke_result_t = typename invoke_result<_Fn, _Args...>::type; - -// is_invocable - -template <class _Fn, class ..._Args> -struct _LIBCPP_TEMPLATE_VIS is_invocable - : integral_constant<bool, __invokable<_Fn, _Args...>::value> {}; - -template <class _Ret, class _Fn, class ..._Args> -struct _LIBCPP_TEMPLATE_VIS is_invocable_r - : integral_constant<bool, __invokable_r<_Ret, _Fn, _Args...>::value> {}; - -template <class _Fn, class ..._Args> -inline constexpr bool is_invocable_v = is_invocable<_Fn, _Args...>::value; - -template <class _Ret, class _Fn, class ..._Args> -inline constexpr bool is_invocable_r_v = is_invocable_r<_Ret, _Fn, _Args...>::value; - -// is_nothrow_invocable - -template <class _Fn, class ..._Args> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable - : integral_constant<bool, __nothrow_invokable<_Fn, _Args...>::value> {}; - -template <class _Ret, class _Fn, class ..._Args> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable_r - : integral_constant<bool, __nothrow_invokable_r<_Ret, _Fn, _Args...>::value> {}; - -template <class _Fn, class ..._Args> -inline constexpr bool is_nothrow_invocable_v = is_nothrow_invocable<_Fn, _Args...>::value; - -template <class _Ret, class _Fn, class ..._Args> -inline constexpr bool is_nothrow_invocable_r_v = is_nothrow_invocable_r<_Ret, _Fn, _Args...>::value; - -#endif // _LIBCPP_STD_VER > 14 - -// __swappable - -template <class _Tp> struct __is_swappable; -template <class _Tp> struct __is_nothrow_swappable; - - -#ifndef _LIBCPP_CXX03_LANG -template <class _Tp> -using __swap_result_t = typename enable_if<is_move_constructible<_Tp>::value && is_move_assignable<_Tp>::value>::type; -#else -template <class> -using __swap_result_t = void; -#endif - -template <class _Tp> -inline _LIBCPP_INLINE_VISIBILITY -_LIBCPP_CONSTEXPR_AFTER_CXX17 __swap_result_t<_Tp> -swap(_Tp& __x, _Tp& __y) _NOEXCEPT_(is_nothrow_move_constructible<_Tp>::value && - is_nothrow_move_assignable<_Tp>::value); - -template<class _Tp, size_t _Np> -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 -typename enable_if< - __is_swappable<_Tp>::value ->::type -swap(_Tp (&__a)[_Np], _Tp (&__b)[_Np]) _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value); - -namespace __detail -{ -// ALL generic swap overloads MUST already have a declaration available at this point. - -template <class _Tp, class _Up = _Tp, - bool _NotVoid = !is_void<_Tp>::value && !is_void<_Up>::value> -struct __swappable_with -{ - template <class _LHS, class _RHS> - static decltype(swap(declval<_LHS>(), declval<_RHS>())) - __test_swap(int); - template <class, class> - static __nat __test_swap(long); - - // Extra parens are needed for the C++03 definition of decltype. - typedef decltype((__test_swap<_Tp, _Up>(0))) __swap1; - typedef decltype((__test_swap<_Up, _Tp>(0))) __swap2; - - static const bool value = _IsNotSame<__swap1, __nat>::value - && _IsNotSame<__swap2, __nat>::value; -}; - -template <class _Tp, class _Up> -struct __swappable_with<_Tp, _Up, false> : false_type {}; - -template <class _Tp, class _Up = _Tp, bool _Swappable = __swappable_with<_Tp, _Up>::value> -struct __nothrow_swappable_with { - static const bool value = -#ifndef _LIBCPP_HAS_NO_NOEXCEPT - noexcept(swap(declval<_Tp>(), declval<_Up>())) - && noexcept(swap(declval<_Up>(), declval<_Tp>())); -#else - false; -#endif -}; - -template <class _Tp, class _Up> -struct __nothrow_swappable_with<_Tp, _Up, false> : false_type {}; - -} // namespace __detail - -template <class _Tp> -struct __is_swappable - : public integral_constant<bool, __detail::__swappable_with<_Tp&>::value> -{ -}; - -template <class _Tp> -struct __is_nothrow_swappable - : public integral_constant<bool, __detail::__nothrow_swappable_with<_Tp&>::value> -{ -}; - -#if _LIBCPP_STD_VER > 14 - -template <class _Tp, class _Up> -struct _LIBCPP_TEMPLATE_VIS is_swappable_with - : public integral_constant<bool, __detail::__swappable_with<_Tp, _Up>::value> -{ -}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_swappable - : public conditional< - __is_referenceable<_Tp>::value, - is_swappable_with< - typename add_lvalue_reference<_Tp>::type, - typename add_lvalue_reference<_Tp>::type>, - false_type - >::type -{ -}; - -template <class _Tp, class _Up> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_swappable_with - : public integral_constant<bool, __detail::__nothrow_swappable_with<_Tp, _Up>::value> -{ -}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_nothrow_swappable - : public conditional< - __is_referenceable<_Tp>::value, - is_nothrow_swappable_with< - typename add_lvalue_reference<_Tp>::type, - typename add_lvalue_reference<_Tp>::type>, - false_type - >::type -{ -}; - -template <class _Tp, class _Up> -inline constexpr bool is_swappable_with_v = is_swappable_with<_Tp, _Up>::value; - -template <class _Tp> -inline constexpr bool is_swappable_v = is_swappable<_Tp>::value; - -template <class _Tp, class _Up> -inline constexpr bool is_nothrow_swappable_with_v = is_nothrow_swappable_with<_Tp, _Up>::value; - -template <class _Tp> -inline constexpr bool is_nothrow_swappable_v = is_nothrow_swappable<_Tp>::value; - -#endif // _LIBCPP_STD_VER > 14 - -template <class _Tp, bool = is_enum<_Tp>::value> struct __underlying_type_impl; - -template <class _Tp> -struct __underlying_type_impl<_Tp, false> {}; - -template <class _Tp> -struct __underlying_type_impl<_Tp, true> -{ - typedef __underlying_type(_Tp) type; -}; - -template <class _Tp> -struct underlying_type : __underlying_type_impl<_Tp, is_enum<_Tp>::value> {}; - -#if _LIBCPP_STD_VER > 11 -template <class _Tp> using underlying_type_t = typename underlying_type<_Tp>::type; -#endif - -template <class _Tp, bool = is_enum<_Tp>::value> -struct __sfinae_underlying_type -{ - typedef typename underlying_type<_Tp>::type type; - typedef decltype(((type)1) + 0) __promoted_type; -}; - -template <class _Tp> -struct __sfinae_underlying_type<_Tp, false> {}; - -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -int __convert_to_integral(int __val) { return __val; } - -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -unsigned __convert_to_integral(unsigned __val) { return __val; } - -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -long __convert_to_integral(long __val) { return __val; } - -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -unsigned long __convert_to_integral(unsigned long __val) { return __val; } - -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -long long __convert_to_integral(long long __val) { return __val; } - -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -unsigned long long __convert_to_integral(unsigned long long __val) {return __val; } - -template<typename _Fp> -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -typename enable_if<is_floating_point<_Fp>::value, long long>::type - __convert_to_integral(_Fp __val) { return __val; } - -#ifndef _LIBCPP_HAS_NO_INT128 -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -__int128_t __convert_to_integral(__int128_t __val) { return __val; } - -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -__uint128_t __convert_to_integral(__uint128_t __val) { return __val; } -#endif - -template <class _Tp> -inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR -typename __sfinae_underlying_type<_Tp>::__promoted_type -__convert_to_integral(_Tp __val) { return __val; } - -// is_scoped_enum [meta.unary.prop] - -#if _LIBCPP_STD_VER > 20 -template <class _Tp, bool = is_enum_v<_Tp> > -struct __is_scoped_enum_helper : false_type {}; - -template <class _Tp> -struct __is_scoped_enum_helper<_Tp, true> - : public bool_constant<!is_convertible_v<_Tp, underlying_type_t<_Tp> > > {}; - -template <class _Tp> -struct _LIBCPP_TEMPLATE_VIS is_scoped_enum - : public __is_scoped_enum_helper<_Tp> {}; - -template <class _Tp> -inline constexpr bool is_scoped_enum_v = is_scoped_enum<_Tp>::value; -#endif - -#if _LIBCPP_STD_VER > 14 - -template <class... _Args> -struct conjunction : _And<_Args...> {}; -template<class... _Args> -inline constexpr bool conjunction_v = conjunction<_Args...>::value; - -template <class... _Args> -struct disjunction : _Or<_Args...> {}; -template<class... _Args> -inline constexpr bool disjunction_v = disjunction<_Args...>::value; - -template <class _Tp> -struct negation : _Not<_Tp> {}; -template<class _Tp> -inline constexpr bool negation_v = negation<_Tp>::value; -#endif // _LIBCPP_STD_VER > 14 - -// These traits are used in __tree and __hash_table -struct __extract_key_fail_tag {}; -struct __extract_key_self_tag {}; -struct __extract_key_first_tag {}; - -template <class _ValTy, class _Key, - class _RawValTy = typename __unconstref<_ValTy>::type> -struct __can_extract_key - : conditional<_IsSame<_RawValTy, _Key>::value, __extract_key_self_tag, - __extract_key_fail_tag>::type {}; - -template <class _Pair, class _Key, class _First, class _Second> -struct __can_extract_key<_Pair, _Key, pair<_First, _Second> > - : conditional<_IsSame<typename remove_const<_First>::type, _Key>::value, - __extract_key_first_tag, __extract_key_fail_tag>::type {}; - -// __can_extract_map_key uses true_type/false_type instead of the tags. -// It returns true if _Key != _ContainerValueTy (the container is a map not a set) -// and _ValTy == _Key. -template <class _ValTy, class _Key, class _ContainerValueTy, - class _RawValTy = typename __unconstref<_ValTy>::type> -struct __can_extract_map_key - : integral_constant<bool, _IsSame<_RawValTy, _Key>::value> {}; - -// This specialization returns __extract_key_fail_tag for non-map containers -// because _Key == _ContainerValueTy -template <class _ValTy, class _Key, class _RawValTy> -struct __can_extract_map_key<_ValTy, _Key, _Key, _RawValTy> - : false_type {}; - -#if _LIBCPP_STD_VER > 17 -_LIBCPP_INLINE_VISIBILITY -inline constexpr bool is_constant_evaluated() noexcept { - return __builtin_is_constant_evaluated(); -} -#endif - -inline _LIBCPP_CONSTEXPR -bool __libcpp_is_constant_evaluated() _NOEXCEPT { return __builtin_is_constant_evaluated(); } - -template <class _CharT> -using _IsCharLikeType = _And<is_standard_layout<_CharT>, is_trivial<_CharT> >; - -template<class _Tp> -using __make_const_lvalue_ref = const typename remove_reference<_Tp>::type&; - -#if _LIBCPP_STD_VER > 17 -template<bool _Const, class _Tp> -using __maybe_const = conditional_t<_Const, const _Tp, _Tp>; -#endif // _LIBCPP_STD_VER > 17 - -_LIBCPP_END_NAMESPACE_STD - #endif // _LIBCPP_TYPE_TRAITS |