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// -*- C++ -*-
//===------------------------ type_traits ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_TYPE_TRAITS
#define _LIBCPP_TYPE_TRAITS
/*
type_traits synopsis
namespace std
{
// helper class:
template <class T, T v> struct integral_constant;
typedef integral_constant<bool, true> true_type; // C++11
typedef integral_constant<bool, false> false_type; // C++11
template <bool B> // C++14
using bool_constant = integral_constant<bool, B>; // C++14
typedef bool_constant<true> true_type; // C++14
typedef bool_constant<false> false_type; // C++14
// helper traits
template <bool, class T = void> struct enable_if;
template <bool, class T, class F> struct conditional;
// Primary classification traits:
template <class T> struct is_void;
template <class T> struct is_null_pointer; // C++14
template <class T> struct is_integral;
template <class T> struct is_floating_point;
template <class T> struct is_array;
template <class T> struct is_pointer;
template <class T> struct is_lvalue_reference;
template <class T> struct is_rvalue_reference;
template <class T> struct is_member_object_pointer;
template <class T> struct is_member_function_pointer;
template <class T> struct is_enum;
template <class T> struct is_union;
template <class T> struct is_class;
template <class T> struct is_function;
// Secondary classification traits:
template <class T> struct is_reference;
template <class T> struct is_arithmetic;
template <class T> struct is_fundamental;
template <class T> struct is_member_pointer;
template <class T> struct is_scalar;
template <class T> struct is_object;
template <class T> struct is_compound;
// Const-volatile properties and transformations:
template <class T> struct is_const;
template <class T> struct is_volatile;
template <class T> struct remove_const;
template <class T> struct remove_volatile;
template <class T> struct remove_cv;
template <class T> struct add_const;
template <class T> struct add_volatile;
template <class T> struct add_cv;
// Reference transformations:
template <class T> struct remove_reference;
template <class T> struct add_lvalue_reference;
template <class T> struct add_rvalue_reference;
// Pointer transformations:
template <class T> struct remove_pointer;
template <class T> struct add_pointer;
// Integral properties:
template <class T> struct is_signed;
template <class T> struct is_unsigned;
template <class T> struct make_signed;
template <class T> struct make_unsigned;
// Array properties and transformations:
template <class T> struct rank;
template <class T, unsigned I = 0> struct extent;
template <class T> struct remove_extent;
template <class T> struct remove_all_extents;
// Member introspection:
template <class T> struct is_pod;
template <class T> struct is_trivial;
template <class T> struct is_trivially_copyable;
template <class T> struct is_standard_layout;
template <class T> struct is_literal_type;
template <class T> struct is_empty;
template <class T> struct is_polymorphic;
template <class T> struct is_abstract;
template <class T> struct is_final; // C++14
template <class T, class... Args> struct is_constructible;
template <class T> struct is_default_constructible;
template <class T> struct is_copy_constructible;
template <class T> struct is_move_constructible;
template <class T, class U> struct is_assignable;
template <class T> struct is_copy_assignable;
template <class T> struct is_move_assignable;
template <class T> struct is_destructible;
template <class T, class... Args> struct is_trivially_constructible;
template <class T> struct is_trivially_default_constructible;
template <class T> struct is_trivially_copy_constructible;
template <class T> struct is_trivially_move_constructible;
template <class T, class U> struct is_trivially_assignable;
template <class T> struct is_trivially_copy_assignable;
template <class T> struct is_trivially_move_assignable;
template <class T> struct is_trivially_destructible;
template <class T, class... Args> struct is_nothrow_constructible;
template <class T> struct is_nothrow_default_constructible;
template <class T> struct is_nothrow_copy_constructible;
template <class T> struct is_nothrow_move_constructible;
template <class T, class U> struct is_nothrow_assignable;
template <class T> struct is_nothrow_copy_assignable;
template <class T> struct is_nothrow_move_assignable;
template <class T> struct is_nothrow_destructible;
template <class T> struct has_virtual_destructor;
// Relationships between types:
template <class T, class U> struct is_same;
template <class Base, class Derived> struct is_base_of;
template <class From, class To> struct is_convertible;
// 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;
template <class T> struct decay;
template <class... T> struct common_type;
template <class T> struct underlying_type;
template <class> class result_of; // undefined
template <class Fn, class... ArgTypes> class result_of<Fn(ArgTypes...)>;
// const-volatile modifications:
template <class T>
using remove_const_t = typename remove_const<T>::type; // C++14
template <class T>
using remove_volatile_t = typename remove_volatile<T>::type; // C++14
template <class T>
using remove_cv_t = typename remove_cv<T>::type; // C++14
template <class T>
using add_const_t = typename add_const<T>::type; // C++14
template <class T>
using add_volatile_t = typename add_volatile<T>::type; // C++14
template <class T>
using add_cv_t = typename add_cv<T>::type; // C++14
// reference modifications:
template <class T>
using remove_reference_t = typename remove_reference<T>::type; // C++14
template <class T>
using add_lvalue_reference_t = typename add_lvalue_reference<T>::type; // C++14
template <class T>
using add_rvalue_reference_t = typename add_rvalue_reference<T>::type; // C++14
// sign modifications:
template <class T>
using make_signed_t = typename make_signed<T>::type; // C++14
template <class T>
using make_unsigned_t = typename make_unsigned<T>::type; // C++14
// array modifications:
template <class T>
using remove_extent_t = typename remove_extent<T>::type; // C++14
template <class T>
using remove_all_extents_t = typename remove_all_extents<T>::type; // C++14
// pointer modifications:
template <class T>
using remove_pointer_t = typename remove_pointer<T>::type; // C++14
template <class T>
using add_pointer_t = typename add_pointer<T>::type; // C++14
// other transformations:
template <size_t Len, std::size_t Align=default-alignment>
using aligned_storage_t = typename aligned_storage<Len,Align>::type; // C++14
template <std::size_t Len, class... Types>
using aligned_union_t = typename aligned_union<Len,Types...>::type; // C++14
template <class T>
using decay_t = typename decay<T>::type; // C++14
template <bool b, class T=void>
using enable_if_t = typename enable_if<b,T>::type; // C++14
template <bool b, class T, class F>
using conditional_t = typename conditional<b,T,F>::type; // C++14
template <class... T>
using common_type_t = typename common_type<T...>::type; // C++14
template <class T>
using underlying_type_t = typename underlying_type<T>::type; // C++14
template <class F, class... ArgTypes>
using result_of_t = typename result_of<F(ArgTypes...)>::type; // C++14
template <class...>
using void_t = void; // C++17
// See C++14 20.10.4.1, primary type categories
template <class T> constexpr bool is_void_v
= is_void<T>::value; // C++17
template <class T> constexpr bool is_null_pointer_v
= is_null_pointer<T>::value; // C++17
template <class T> constexpr bool is_integral_v
= is_integral<T>::value; // C++17
template <class T> constexpr bool is_floating_point_v
= is_floating_point<T>::value; // C++17
template <class T> constexpr bool is_array_v
= is_array<T>::value; // C++17
template <class T> constexpr bool is_pointer_v
= is_pointer<T>::value; // C++17
template <class T> constexpr bool is_lvalue_reference_v
= is_lvalue_reference<T>::value; // C++17
template <class T> constexpr bool is_rvalue_reference_v
= is_rvalue_reference<T>::value; // C++17
template <class T> constexpr bool is_member_object_pointer_v
= is_member_object_pointer<T>::value; // C++17
template <class T> constexpr bool is_member_function_pointer_v
= is_member_function_pointer<T>::value; // C++17
template <class T> constexpr bool is_enum_v
= is_enum<T>::value; // C++17
template <class T> constexpr bool is_union_v
= is_union<T>::value; // C++17
template <class T> constexpr bool is_class_v
= is_class<T>::value; // C++17
template <class T> constexpr bool is_function_v
= is_function<T>::value; // C++17
// See C++14 20.10.4.2, composite type categories
template <class T> constexpr bool is_reference_v
= is_reference<T>::value; // C++17
template <class T> constexpr bool is_arithmetic_v
= is_arithmetic<T>::value; // C++17
template <class T> constexpr bool is_fundamental_v
= is_fundamental<T>::value; // C++17
template <class T> constexpr bool is_object_v
= is_object<T>::value; // C++17
template <class T> constexpr bool is_scalar_v
= is_scalar<T>::value; // C++17
template <class T> constexpr bool is_compound_v
= is_compound<T>::value; // C++17
template <class T> constexpr bool is_member_pointer_v
= is_member_pointer<T>::value; // C++17
// See C++14 20.10.4.3, type properties
template <class T> constexpr bool is_const_v
= is_const<T>::value; // C++17
template <class T> constexpr bool is_volatile_v
= is_volatile<T>::value; // C++17
template <class T> constexpr bool is_trivial_v
= is_trivial<T>::value; // C++17
template <class T> constexpr bool is_trivially_copyable_v
= is_trivially_copyable<T>::value; // C++17
template <class T> constexpr bool is_standard_layout_v
= is_standard_layout<T>::value; // C++17
template <class T> constexpr bool is_pod_v
= is_pod<T>::value; // C++17
template <class T> constexpr bool is_literal_type_v
= is_literal_type<T>::value; // C++17
template <class T> constexpr bool is_empty_v
= is_empty<T>::value; // C++17
template <class T> constexpr bool is_polymorphic_v
= is_polymorphic<T>::value; // C++17
template <class T> constexpr bool is_abstract_v
= is_abstract<T>::value; // C++17
template <class T> constexpr bool is_final_v
= is_final<T>::value; // C++17
template <class T> constexpr bool is_signed_v
= is_signed<T>::value; // C++17
template <class T> constexpr bool is_unsigned_v
= is_unsigned<T>::value; // C++17
template <class T, class... Args> constexpr bool is_constructible_v
= is_constructible<T, Args...>::value; // C++17
template <class T> constexpr bool is_default_constructible_v
= is_default_constructible<T>::value; // C++17
template <class T> constexpr bool is_copy_constructible_v
= is_copy_constructible<T>::value; // C++17
template <class T> constexpr bool is_move_constructible_v
= is_move_constructible<T>::value; // C++17
template <class T, class U> constexpr bool is_assignable_v
= is_assignable<T, U>::value; // C++17
template <class T> constexpr bool is_copy_assignable_v
= is_copy_assignable<T>::value; // C++17
template <class T> constexpr bool is_move_assignable_v
= is_move_assignable<T>::value; // C++17
template <class T> constexpr bool is_destructible_v
= is_destructible<T>::value; // C++17
template <class T, class... Args> constexpr bool is_trivially_constructible_v
= is_trivially_constructible<T, Args...>::value; // C++17
template <class T> constexpr bool is_trivially_default_constructible_v
= is_trivially_default_constructible<T>::value; // C++17
template <class T> constexpr bool is_trivially_copy_constructible_v
= is_trivially_copy_constructible<T>::value; // C++17
template <class T> constexpr bool is_trivially_move_constructible_v
= is_trivially_move_constructible<T>::value; // C++17
template <class T, class U> constexpr bool is_trivially_assignable_v
= is_trivially_assignable<T, U>::value; // C++17
template <class T> constexpr bool is_trivially_copy_assignable_v
= is_trivially_copy_assignable<T>::value; // C++17
template <class T> constexpr bool is_trivially_move_assignable_v
= is_trivially_move_assignable<T>::value; // C++17
template <class T> constexpr bool is_trivially_destructible_v
= is_trivially_destructible<T>::value; // C++17
template <class T, class... Args> constexpr bool is_nothrow_constructible_v
= is_nothrow_constructible<T, Args...>::value; // C++17
template <class T> constexpr bool is_nothrow_default_constructible_v
= is_nothrow_default_constructible<T>::value; // C++17
template <class T> constexpr bool is_nothrow_copy_constructible_v
= is_nothrow_copy_constructible<T>::value; // C++17
template <class T> constexpr bool is_nothrow_move_constructible_v
= is_nothrow_move_constructible<T>::value; // C++17
template <class T, class U> constexpr bool is_nothrow_assignable_v
= is_nothrow_assignable<T, U>::value; // C++17
template <class T> constexpr bool is_nothrow_copy_assignable_v
= is_nothrow_copy_assignable<T>::value; // C++17
template <class T> constexpr bool is_nothrow_move_assignable_v
= is_nothrow_move_assignable<T>::value; // C++17
template <class T> constexpr bool is_nothrow_destructible_v
= is_nothrow_destructible<T>::value; // C++17
template <class T> constexpr bool has_virtual_destructor_v
= has_virtual_destructor<T>::value; // C++17
// See C++14 20.10.5, type property queries
template <class T> constexpr size_t alignment_of_v
= alignment_of<T>::value; // C++17
template <class T> constexpr size_t rank_v
= rank<T>::value; // C++17
template <class T, unsigned I = 0> constexpr size_t extent_v
= extent<T, I>::value; // C++17
// See C++14 20.10.6, type relations
template <class T, class U> constexpr bool is_same_v
= is_same<T, U>::value; // C++17
template <class Base, class Derived> constexpr bool is_base_of_v
= is_base_of<Base, Derived>::value; // C++17
template <class From, class To> constexpr bool is_convertible_v
= is_convertible<From, To>::value; // C++17
// [meta.logical], logical operator traits:
template<class... B> struct conjunction; // C++17
template<class... B>
constexpr bool conjunction_v = conjunction<B...>::value; // C++17
template<class... B> struct disjunction; // C++17
template<class... B>
constexpr bool disjunction_v = disjunction<B...>::value; // C++17
template<class B> struct negation; // C++17
template<class B>
constexpr bool negation_v = negation<B>::value; // C++17
}
*/
#include <__config>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class>
struct __void_t { typedef void type; };
template <class _Tp>
struct __identity { typedef _Tp type; };
template <class _Tp, bool>
struct _LIBCPP_TYPE_VIS_ONLY __dependent_type : public _Tp {};
template <bool _Bp, class _If, class _Then>
struct _LIBCPP_TYPE_VIS_ONLY conditional {typedef _If type;};
template <class _If, class _Then>
struct _LIBCPP_TYPE_VIS_ONLY 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
template <bool, class _Tp> struct _LIBCPP_TYPE_VIS_ONLY __lazy_enable_if {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY __lazy_enable_if<true, _Tp> {typedef typename _Tp::type type;};
template <bool, class _Tp = void> struct _LIBCPP_TYPE_VIS_ONLY enable_if {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY enable_if<true, _Tp> {typedef _Tp type;};
#if _LIBCPP_STD_VER > 11
template <bool _Bp, class _Tp = void> using enable_if_t = typename enable_if<_Bp, _Tp>::type;
#endif
// addressof
template <class _Tp>
inline _LIBCPP_NO_CFI _LIBCPP_INLINE_VISIBILITY
_Tp*
addressof(_Tp& __x) _NOEXCEPT
{
return (_Tp*)&reinterpret_cast<const volatile char&>(__x);
}
#if defined(_LIBCPP_HAS_OBJC_ARC) && !defined(_LIBCPP_PREDEFINED_OBJC_ARC_ADDRESSOF)
// Objective-C++ Automatic Reference Counting uses qualified pointers
// that require special addressof() signatures. When
// _LIBCPP_PREDEFINED_OBJC_ARC_ADDRESSOF is defined, the compiler
// itself is providing these definitions. Otherwise, we provide them.
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
__strong _Tp*
addressof(__strong _Tp& __x) _NOEXCEPT
{
return &__x;
}
#ifdef _LIBCPP_HAS_OBJC_ARC_WEAK
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
__weak _Tp*
addressof(__weak _Tp& __x) _NOEXCEPT
{
return &__x;
}
#endif
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
__autoreleasing _Tp*
addressof(__autoreleasing _Tp& __x) _NOEXCEPT
{
return &__x;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
__unsafe_unretained _Tp*
addressof(__unsafe_unretained _Tp& __x) _NOEXCEPT
{
return &__x;
}
#endif
struct __two {char __lx[2];};
// helper class:
template <class _Tp, _Tp __v>
struct _LIBCPP_TYPE_VIS_ONLY 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
typedef _LIBCPP_BOOL_CONSTANT(true) true_type;
typedef _LIBCPP_BOOL_CONSTANT(false) false_type;
#if !defined(_LIBCPP_HAS_NO_VARIADICS)
// __lazy_and
template <bool _Last, class ..._Preds>
struct __lazy_and_impl;
template <class ..._Preds>
struct __lazy_and_impl<false, _Preds...> : false_type {};
template <>
struct __lazy_and_impl<true> : true_type {};
template <class _Pred>
struct __lazy_and_impl<true, _Pred> : integral_constant<bool, _Pred::type::value> {};
template <class _Hp, class ..._Tp>
struct __lazy_and_impl<true, _Hp, _Tp...> : __lazy_and_impl<_Hp::type::value, _Tp...> {};
template <class _P1, class ..._Pr>
struct __lazy_and : __lazy_and_impl<_P1::type::value, _Pr...> {};
// __lazy_or
template <bool _List, class ..._Preds>
struct __lazy_or_impl;
template <class ..._Preds>
struct __lazy_or_impl<true, _Preds...> : true_type {};
template <>
struct __lazy_or_impl<false> : false_type {};
template <class _Hp, class ..._Tp>
struct __lazy_or_impl<false, _Hp, _Tp...>
: __lazy_or_impl<_Hp::type::value, _Tp...> {};
template <class _P1, class ..._Pr>
struct __lazy_or : __lazy_or_impl<_P1::type::value, _Pr...> {};
// __lazy_not
template <class _Pred>
struct __lazy_not : integral_constant<bool, !_Pred::type::value> {};
// __and_
template<class...> struct __and_;
template<> struct __and_<> : true_type {};
template<class _B0> struct __and_<_B0> : _B0 {};
template<class _B0, class _B1>
struct __and_<_B0, _B1> : conditional<_B0::value, _B1, _B0>::type {};
template<class _B0, class _B1, class _B2, class... _Bn>
struct __and_<_B0, _B1, _B2, _Bn...>
: conditional<_B0::value, __and_<_B1, _B2, _Bn...>, _B0>::type {};
// __or_
template<class...> struct __or_;
template<> struct __or_<> : false_type {};
template<class _B0> struct __or_<_B0> : _B0 {};
template<class _B0, class _B1>
struct __or_<_B0, _B1> : conditional<_B0::value, _B0, _B1>::type {};
template<class _B0, class _B1, class _B2, class... _Bn>
struct __or_<_B0, _B1, _B2, _Bn...>
: conditional<_B0::value, _B0, __or_<_B1, _B2, _Bn...> >::type {};
// __not_
template<class _Tp>
struct __not_ : conditional<_Tp::value, false_type, true_type>::type {};
#endif // !defined(_LIBCPP_HAS_NO_VARIADICS)
// is_const
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_const : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_const<_Tp const> : public true_type {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_const_v
= is_const<_Tp>::value;
#endif
// is_volatile
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_volatile : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_volatile<_Tp volatile> : public true_type {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_volatile_v
= is_volatile<_Tp>::value;
#endif
// remove_const
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_const {typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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
// remove_volatile
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_volatile {typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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
// remove_cv
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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
// is_void
template <class _Tp> struct __libcpp_is_void : public false_type {};
template <> struct __libcpp_is_void<void> : public true_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_void
: public __libcpp_is_void<typename remove_cv<_Tp>::type> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_void_v
= is_void<_Tp>::value;
#endif
// __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_TYPE_VIS_ONLY __is_nullptr_t
: public __is_nullptr_t_impl<typename remove_cv<_Tp>::type> {};
#if _LIBCPP_STD_VER > 11
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_null_pointer
: public __is_nullptr_t_impl<typename remove_cv<_Tp>::type> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_null_pointer_v
= is_null_pointer<_Tp>::value;
#endif
#endif
// is_integral
template <class _Tp> struct __libcpp_is_integral : public false_type {};
template <> struct __libcpp_is_integral<bool> : public true_type {};
template <> struct __libcpp_is_integral<char> : public true_type {};
template <> struct __libcpp_is_integral<signed char> : public true_type {};
template <> struct __libcpp_is_integral<unsigned char> : public true_type {};
template <> struct __libcpp_is_integral<wchar_t> : public true_type {};
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
template <> struct __libcpp_is_integral<char16_t> : public true_type {};
template <> struct __libcpp_is_integral<char32_t> : public true_type {};
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
template <> struct __libcpp_is_integral<short> : public true_type {};
template <> struct __libcpp_is_integral<unsigned short> : public true_type {};
template <> struct __libcpp_is_integral<int> : public true_type {};
template <> struct __libcpp_is_integral<unsigned int> : public true_type {};
template <> struct __libcpp_is_integral<long> : public true_type {};
template <> struct __libcpp_is_integral<unsigned long> : public true_type {};
template <> struct __libcpp_is_integral<long long> : public true_type {};
template <> struct __libcpp_is_integral<unsigned long long> : public true_type {};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __libcpp_is_integral<__int128_t> : public true_type {};
template <> struct __libcpp_is_integral<__uint128_t> : public true_type {};
#endif
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_integral
: public __libcpp_is_integral<typename remove_cv<_Tp>::type> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_integral_v
= is_integral<_Tp>::value;
#endif
// is_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_TYPE_VIS_ONLY is_floating_point
: public __libcpp_is_floating_point<typename remove_cv<_Tp>::type> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_floating_point_v
= is_floating_point<_Tp>::value;
#endif
// is_array
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_array
: public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_array<_Tp[]>
: public true_type {};
template <class _Tp, size_t _Np> struct _LIBCPP_TYPE_VIS_ONLY is_array<_Tp[_Np]>
: public true_type {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_array_v
= is_array<_Tp>::value;
#endif
// 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_TYPE_VIS_ONLY is_pointer
: public __libcpp_is_pointer<typename remove_cv<_Tp>::type> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_pointer_v
= is_pointer<_Tp>::value;
#endif
// is_reference
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_lvalue_reference : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_lvalue_reference<_Tp&> : public true_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_rvalue_reference : public false_type {};
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_rvalue_reference<_Tp&&> : public true_type {};
#endif
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_reference : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_reference<_Tp&> : public true_type {};
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_reference<_Tp&&> : public true_type {};
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_reference_v
= is_reference<_Tp>::value;
template <class _Tp> _LIBCPP_CONSTEXPR bool is_lvalue_reference_v
= is_lvalue_reference<_Tp>::value;
template <class _Tp> _LIBCPP_CONSTEXPR bool is_rvalue_reference_v
= is_rvalue_reference<_Tp>::value;
#endif
// is_union
#if __has_feature(is_union) || (_GNUC_VER >= 403)
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_union
: public integral_constant<bool, __is_union(_Tp)> {};
#else
template <class _Tp> struct __libcpp_union : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_union
: public __libcpp_union<typename remove_cv<_Tp>::type> {};
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_union_v
= is_union<_Tp>::value;
#endif
// is_class
#if __has_feature(is_class) || (_GNUC_VER >= 403)
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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_TYPE_VIS_ONLY is_class
: public integral_constant<bool, sizeof(__is_class_imp::__test<_Tp>(0)) == 1 && !is_union<_Tp>::value> {};
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_class_v
= is_class<_Tp>::value;
#endif
// is_same
template <class _Tp, class _Up> struct _LIBCPP_TYPE_VIS_ONLY is_same : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_same<_Tp, _Tp> : public true_type {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp, class _Up> _LIBCPP_CONSTEXPR bool is_same_v
= is_same<_Tp, _Up>::value;
#endif
// is_function
namespace __libcpp_is_function_imp
{
struct __dummy_type {};
template <class _Tp> char __test(_Tp*);
template <class _Tp> char __test(__dummy_type);
template <class _Tp> __two __test(...);
template <class _Tp> _Tp& __source(int);
template <class _Tp> __dummy_type __source(...);
}
template <class _Tp, bool = is_class<_Tp>::value ||
is_union<_Tp>::value ||
is_void<_Tp>::value ||
is_reference<_Tp>::value ||
__is_nullptr_t<_Tp>::value >
struct __libcpp_is_function
: public integral_constant<bool, sizeof(__libcpp_is_function_imp::__test<_Tp>(__libcpp_is_function_imp::__source<_Tp>(0))) == 1>
{};
template <class _Tp> struct __libcpp_is_function<_Tp, true> : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_function
: public __libcpp_is_function<_Tp> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_function_v
= is_function<_Tp>::value;
#endif
// is_member_function_pointer
// template <class _Tp> struct __libcpp_is_member_function_pointer : public false_type {};
// template <class _Tp, class _Up> struct __libcpp_is_member_function_pointer<_Tp _Up::*> : public is_function<_Tp> {};
//
template <class _MP, bool _IsMemberFunctionPtr, bool _IsMemberObjectPtr>
struct __member_pointer_traits_imp
{ // forward declaration; specializations later
};
template <class _Tp> struct __libcpp_is_member_function_pointer
: public false_type {};
template <class _Ret, class _Class>
struct __libcpp_is_member_function_pointer<_Ret _Class::*>
: public is_function<_Ret> {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_member_function_pointer
: public __libcpp_is_member_function_pointer<typename remove_cv<_Tp>::type>::type {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_member_function_pointer_v
= is_member_function_pointer<_Tp>::value;
#endif
// is_member_pointer
template <class _Tp> struct __libcpp_is_member_pointer : public false_type {};
template <class _Tp, class _Up> struct __libcpp_is_member_pointer<_Tp _Up::*> : public true_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_member_pointer
: public __libcpp_is_member_pointer<typename remove_cv<_Tp>::type> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_member_pointer_v
= is_member_pointer<_Tp>::value;
#endif
// is_member_object_pointer
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_member_object_pointer
: public integral_constant<bool, is_member_pointer<_Tp>::value &&
!is_member_function_pointer<_Tp>::value> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_member_object_pointer_v
= is_member_object_pointer<_Tp>::value;
#endif
// is_enum
#if __has_feature(is_enum) || (_GNUC_VER >= 403)
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_enum
: public integral_constant<bool, __is_enum(_Tp)> {};
#else
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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 > {};
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_enum_v
= is_enum<_Tp>::value;
#endif
// is_arithmetic
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_arithmetic
: public integral_constant<bool, is_integral<_Tp>::value ||
is_floating_point<_Tp>::value> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_arithmetic_v
= is_arithmetic<_Tp>::value;
#endif
// is_fundamental
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_fundamental
: public integral_constant<bool, is_void<_Tp>::value ||
__is_nullptr_t<_Tp>::value ||
is_arithmetic<_Tp>::value> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_fundamental_v
= is_fundamental<_Tp>::value;
#endif
// is_scalar
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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_enum<_Tp>::value > {};
template <> struct _LIBCPP_TYPE_VIS_ONLY is_scalar<nullptr_t> : public true_type {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_scalar_v
= is_scalar<_Tp>::value;
#endif
// is_object
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_object_v
= is_object<_Tp>::value;
#endif
// is_compound
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_compound
: public integral_constant<bool, !is_fundamental<_Tp>::value> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_compound_v
= is_compound<_Tp>::value;
#endif
// __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 : std::integral_constant<bool,
!std::is_same<decltype(__is_referenceable_impl::__test<_Tp>(0)), __two>::value> {};
// add_const
template <class _Tp, bool = is_reference<_Tp>::value ||
is_function<_Tp>::value ||
is_const<_Tp>::value >
struct __add_const {typedef _Tp type;};
template <class _Tp>
struct __add_const<_Tp, false> {typedef const _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY add_const
{typedef typename __add_const<_Tp>::type type;};
#if _LIBCPP_STD_VER > 11
template <class _Tp> using add_const_t = typename add_const<_Tp>::type;
#endif
// add_volatile
template <class _Tp, bool = is_reference<_Tp>::value ||
is_function<_Tp>::value ||
is_volatile<_Tp>::value >
struct __add_volatile {typedef _Tp type;};
template <class _Tp>
struct __add_volatile<_Tp, false> {typedef volatile _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY add_volatile
{typedef typename __add_volatile<_Tp>::type 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_TYPE_VIS_ONLY add_cv
{typedef typename add_const<typename add_volatile<_Tp>::type>::type type;};
#if _LIBCPP_STD_VER > 11
template <class _Tp> using add_cv_t = typename add_cv<_Tp>::type;
#endif
// remove_reference
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_reference {typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_reference<_Tp&> {typedef _Tp type;};
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_reference<_Tp&&> {typedef _Tp type;};
#endif
#if _LIBCPP_STD_VER > 11
template <class _Tp> using remove_reference_t = typename remove_reference<_Tp>::type;
#endif
// add_lvalue_reference
template <class _Tp, bool = __is_referenceable<_Tp>::value> struct __add_lvalue_reference_impl { typedef _Tp type; };
template <class _Tp > struct __add_lvalue_reference_impl<_Tp, true> { typedef _Tp& type; };
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY add_lvalue_reference
{typedef 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
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp, bool = __is_referenceable<_Tp>::value> struct __add_rvalue_reference_impl { typedef _Tp type; };
template <class _Tp > struct __add_rvalue_reference_impl<_Tp, true> { typedef _Tp&& type; };
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY add_rvalue_reference
{typedef 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
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp>
typename add_rvalue_reference<_Tp>::type
declval() _NOEXCEPT;
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp>
typename add_lvalue_reference<_Tp>::type
declval();
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
// __uncvref
template <class _Tp>
struct __uncvref {
typedef typename remove_cv<typename remove_reference<_Tp>::type>::type type;
};
template <class _Tp>
struct __unconstref {
typedef typename remove_const<typename remove_reference<_Tp>::type>::type type;
};
// __is_same_uncvref
template <class _Tp, class _Up>
struct __is_same_uncvref : is_same<typename __uncvref<_Tp>::type,
typename __uncvref<_Up>::type> {};
struct __any
{
__any(...);
};
// remove_pointer
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_pointer {typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_pointer<_Tp*> {typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_pointer<_Tp* const> {typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_pointer<_Tp* volatile> {typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_pointer<_Tp* const volatile> {typedef _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 ||
is_same<typename remove_cv<_Tp>::type, void>::value>
struct __add_pointer_impl
{typedef typename remove_reference<_Tp>::type* type;};
template <class _Tp> struct __add_pointer_impl<_Tp, false>
{typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY add_pointer
{typedef 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
// 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_TYPE_VIS_ONLY is_signed : public __libcpp_is_signed<_Tp> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_signed_v
= is_signed<_Tp>::value;
#endif
// 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_TYPE_VIS_ONLY is_unsigned : public __libcpp_is_unsigned<_Tp> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_unsigned_v
= is_unsigned<_Tp>::value;
#endif
// rank
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY rank
: public integral_constant<size_t, 0> {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY rank<_Tp[]>
: public integral_constant<size_t, rank<_Tp>::value + 1> {};
template <class _Tp, size_t _Np> struct _LIBCPP_TYPE_VIS_ONLY rank<_Tp[_Np]>
: public integral_constant<size_t, rank<_Tp>::value + 1> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR size_t rank_v
= rank<_Tp>::value;
#endif
// extent
template <class _Tp, unsigned _Ip = 0> struct _LIBCPP_TYPE_VIS_ONLY extent
: public integral_constant<size_t, 0> {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY extent<_Tp[], 0>
: public integral_constant<size_t, 0> {};
template <class _Tp, unsigned _Ip> struct _LIBCPP_TYPE_VIS_ONLY extent<_Tp[], _Ip>
: public integral_constant<size_t, extent<_Tp, _Ip-1>::value> {};
template <class _Tp, size_t _Np> struct _LIBCPP_TYPE_VIS_ONLY extent<_Tp[_Np], 0>
: public integral_constant<size_t, _Np> {};
template <class _Tp, size_t _Np, unsigned _Ip> struct _LIBCPP_TYPE_VIS_ONLY extent<_Tp[_Np], _Ip>
: public integral_constant<size_t, extent<_Tp, _Ip-1>::value> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp, unsigned _Ip = 0> _LIBCPP_CONSTEXPR size_t extent_v
= extent<_Tp, _Ip>::value;
#endif
// remove_extent
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_extent
{typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_extent<_Tp[]>
{typedef _Tp type;};
template <class _Tp, size_t _Np> struct _LIBCPP_TYPE_VIS_ONLY 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_TYPE_VIS_ONLY remove_all_extents
{typedef _Tp type;};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY remove_all_extents<_Tp[]>
{typedef typename remove_all_extents<_Tp>::type type;};
template <class _Tp, size_t _Np> struct _LIBCPP_TYPE_VIS_ONLY 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
// decay
template <class _Tp>
struct _LIBCPP_TYPE_VIS_ONLY decay
{
private:
typedef typename remove_reference<_Tp>::type _Up;
public:
typedef 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;
};
#if _LIBCPP_STD_VER > 11
template <class _Tp> using decay_t = typename decay<_Tp>::type;
#endif
// is_abstract
namespace __is_abstract_imp
{
template <class _Tp> char __test(_Tp (*)[1]);
template <class _Tp> __two __test(...);
}
template <class _Tp, bool = is_class<_Tp>::value>
struct __libcpp_abstract : public integral_constant<bool, sizeof(__is_abstract_imp::__test<_Tp>(0)) != 1> {};
template <class _Tp> struct __libcpp_abstract<_Tp, false> : public false_type {};
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_abstract : public __libcpp_abstract<_Tp> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_abstract_v
= is_abstract<_Tp>::value;
#endif
// is_final
#if defined(_LIBCPP_HAS_IS_FINAL)
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
__libcpp_is_final : public integral_constant<bool, __is_final(_Tp)> {};
#else
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
__libcpp_is_final : public false_type {};
#endif
#if defined(_LIBCPP_HAS_IS_FINAL) && _LIBCPP_STD_VER > 11
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
is_final : public integral_constant<bool, __is_final(_Tp)> {};
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_final_v
= is_final<_Tp>::value;
#endif
// is_base_of
#ifdef _LIBCPP_HAS_IS_BASE_OF
template <class _Bp, class _Dp>
struct _LIBCPP_TYPE_VIS_ONLY is_base_of
: public integral_constant<bool, __is_base_of(_Bp, _Dp)> {};
#else // _LIBCPP_HAS_IS_BASE_OF
namespace __is_base_of_imp
{
template <class _Tp>
struct _Dst
{
_Dst(const volatile _Tp &);
};
template <class _Tp>
struct _Src
{
operator const volatile _Tp &();
template <class _Up> operator const _Dst<_Up> &();
};
template <size_t> struct __one { typedef char type; };
template <class _Bp, class _Dp> typename __one<sizeof(_Dst<_Bp>(declval<_Src<_Dp> >()))>::type __test(int);
template <class _Bp, class _Dp> __two __test(...);
}
template <class _Bp, class _Dp>
struct _LIBCPP_TYPE_VIS_ONLY is_base_of
: public integral_constant<bool, is_class<_Bp>::value &&
sizeof(__is_base_of_imp::__test<_Bp, _Dp>(0)) == 2> {};
#endif // _LIBCPP_HAS_IS_BASE_OF
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Bp, class _Dp> _LIBCPP_CONSTEXPR bool is_base_of_v
= is_base_of<_Bp, _Dp>::value;
#endif
// is_convertible
#if __has_feature(is_convertible_to) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK)
template <class _T1, class _T2> struct _LIBCPP_TYPE_VIS_ONLY is_convertible
: public integral_constant<bool, __is_convertible_to(_T1, _T2) &&
!is_abstract<_T2>::value> {};
#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(_VSTD::__is_convertible_imp::__test_convert<_To>(_VSTD::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
#if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
&& !(!is_function<_T1>::value && !is_reference<_T1>::value && is_reference<_T2>::value
&& (!is_const<typename remove_reference<_T2>::type>::value
|| is_volatile<typename remove_reference<_T2>::type>::value)
&& (is_same<typename remove_cv<_T1>::type,
typename remove_cv<typename remove_reference<_T2>::type>::type>::value
|| is_base_of<typename remove_reference<_T2>::type, _T1>::value))
#endif
>
{};
template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 1, 0> : false_type {};
template <class _T1> struct __is_convertible<_T1, const _T1&, 1, 0> : true_type {};
template <class _T1> struct __is_convertible<const _T1, const _T1&, 1, 0> : true_type {};
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _T1> struct __is_convertible<_T1, _T1&&, 1, 0> : true_type {};
template <class _T1> struct __is_convertible<_T1, const _T1&&, 1, 0> : true_type {};
template <class _T1> struct __is_convertible<_T1, volatile _T1&&, 1, 0> : true_type {};
template <class _T1> struct __is_convertible<_T1, const volatile _T1&&, 1, 0> : true_type {};
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _T1, class _T2> struct __is_convertible<_T1, _T2*, 1, 0>
: public integral_constant<bool, __is_convertible<typename remove_all_extents<_T1>::type*, _T2*>::value> {};
template <class _T1, class _T2> struct __is_convertible<_T1, _T2* const, 1, 0>
: public integral_constant<bool, __is_convertible<typename remove_all_extents<_T1>::type*, _T2*const>::value> {};
template <class _T1, class _T2> struct __is_convertible<_T1, _T2* volatile, 1, 0>
: public integral_constant<bool, __is_convertible<typename remove_all_extents<_T1>::type*, _T2*volatile>::value> {};
template <class _T1, class _T2> struct __is_convertible<_T1, _T2* const volatile, 1, 0>
: public integral_constant<bool, __is_convertible<typename remove_all_extents<_T1>::type*, _T2*const volatile>::value> {};
template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 2, 0> : public false_type {};
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _T1> struct __is_convertible<_T1, _T1&&, 2, 0> : public true_type {};
#endif
template <class _T1> struct __is_convertible<_T1, _T1&, 2, 0> : public true_type {};
template <class _T1> struct __is_convertible<_T1, _T1*, 2, 0> : public true_type {};
template <class _T1> struct __is_convertible<_T1, _T1*const, 2, 0> : public true_type {};
template <class _T1> struct __is_convertible<_T1, _T1*volatile, 2, 0> : public true_type {};
template <class _T1> struct __is_convertible<_T1, _T1*const volatile, 2, 0> : public true_type {};
template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 3, 0> : public false_type {};
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_TYPE_VIS_ONLY 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 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _From, class _To> _LIBCPP_CONSTEXPR bool is_convertible_v
= is_convertible<_From, _To>::value;
#endif
// is_empty
#if __has_feature(is_empty) || (_GNUC_VER >= 407)
template <class _Tp>
struct _LIBCPP_TYPE_VIS_ONLY 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_TYPE_VIS_ONLY is_empty : public __libcpp_empty<_Tp> {};
#endif // __has_feature(is_empty)
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_empty_v
= is_empty<_Tp>::value;
#endif
// is_polymorphic
#if __has_feature(is_polymorphic) || defined(_LIBCPP_MSVC)
template <class _Tp>
struct _LIBCPP_TYPE_VIS_ONLY 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_TYPE_VIS_ONLY is_polymorphic
: public integral_constant<bool, sizeof(__is_polymorphic_impl<_Tp>(0)) == 1> {};
#endif // __has_feature(is_polymorphic)
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_polymorphic_v
= is_polymorphic<_Tp>::value;
#endif
// has_virtual_destructor
#if __has_feature(has_virtual_destructor) || (_GNUC_VER >= 403)
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY has_virtual_destructor
: public integral_constant<bool, __has_virtual_destructor(_Tp)> {};
#else
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY has_virtual_destructor
: public false_type {};
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool has_virtual_destructor_v
= has_virtual_destructor<_Tp>::value;
#endif
// alignment_of
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY alignment_of
: public integral_constant<size_t, __alignof__(_Tp)> {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_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_HAS_NO_DELETED_FUNCTIONS
__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 = alignment_of<_Tp>::value;
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 <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,
void
>::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_TYPE_VIS_ONLY aligned_storage
{
typedef typename __find_pod<__all_types, _Align>::type _Aligner;
static_assert(!is_void<_Aligner>::value, "");
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_TYPE_VIS_ONLY 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);
// MSDN says that MSVC does not support alignment beyond 8192 (=0x2000)
#if !defined(_LIBCPP_MSVC)
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4000);
#endif // !_LIBCPP_MSVC
#undef _CREATE_ALIGNED_STORAGE_SPECIALIZATION
#ifndef _LIBCPP_HAS_NO_VARIADICS
// 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<__alignof__(_Type0),
__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
#endif // _LIBCPP_HAS_NO_VARIADICS
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 = !is_same<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 _Hp type;
};
template <class _Hp, class _Tp, size_t _Size>
struct __find_first<__type_list<_Hp, _Tp>, _Size, false>
{
typedef 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 _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, 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_TYPE_VIS_ONLY 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_TYPE_VIS_ONLY 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
#ifdef _LIBCPP_HAS_NO_VARIADICS
template <class _Tp, class _Up = void, class _Vp = void>
struct _LIBCPP_TYPE_VIS_ONLY common_type
{
public:
typedef typename common_type<typename common_type<_Tp, _Up>::type, _Vp>::type type;
};
template <class _Tp>
struct _LIBCPP_TYPE_VIS_ONLY common_type<_Tp, void, void>
{
public:
typedef typename decay<_Tp>::type type;
};
template <class _Tp, class _Up>
struct _LIBCPP_TYPE_VIS_ONLY common_type<_Tp, _Up, void>
{
typedef typename decay<decltype(
true ? _VSTD::declval<_Tp>() : _VSTD::declval<_Up>()
)>::type type;
};
#else // _LIBCPP_HAS_NO_VARIADICS
// bullet 1 - sizeof...(Tp) == 0
template <class ..._Tp>
struct _LIBCPP_TYPE_VIS_ONLY common_type {};
// bullet 2 - sizeof...(Tp) == 1
template <class _Tp>
struct _LIBCPP_TYPE_VIS_ONLY common_type<_Tp>
{
typedef typename decay<_Tp>::type type;
};
// bullet 3 - sizeof...(Tp) == 2
template <class _Tp, class _Up, class = void>
struct __common_type2 {};
template <class _Tp, class _Up>
struct __common_type2<_Tp, _Up,
typename __void_t<decltype(
true ? _VSTD::declval<_Tp>() : _VSTD::declval<_Up>()
)>::type>
{
typedef typename decay<decltype(
true ? _VSTD::declval<_Tp>() : _VSTD::declval<_Up>()
)>::type type;
};
template <class _Tp, class _Up>
struct _LIBCPP_TYPE_VIS_ONLY common_type<_Tp, _Up>
: __common_type2<_Tp, _Up> {};
// bullet 4 - sizeof...(Tp) > 2
template <class ...Tp> struct __common_types;
template <class, class = void>
struct __common_type_impl {};
template <class _Tp, class _Up, class ..._Vp>
struct __common_type_impl<__common_types<_Tp, _Up, _Vp...>,
typename __void_t<typename common_type<_Tp, _Up>::type>::type>
{
typedef typename common_type<
typename common_type<_Tp, _Up>::type, _Vp...
>::type type;
};
template <class _Tp, class _Up, class ..._Vp>
struct _LIBCPP_TYPE_VIS_ONLY common_type<_Tp, _Up, _Vp...>
: __common_type_impl<__common_types<_Tp, _Up, _Vp...> > {};
#if _LIBCPP_STD_VER > 11
template <class ..._Tp> using common_type_t = typename common_type<_Tp...>::type;
#endif
#endif // _LIBCPP_HAS_NO_VARIADICS
// is_assignable
template<typename, typename _Tp> struct __select_2nd { typedef _Tp type; };
template <class _Tp, class _Arg>
typename __select_2nd<decltype((_VSTD::declval<_Tp>() = _VSTD::declval<_Arg>())), true_type>::type
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
__is_assignable_test(_Tp&&, _Arg&&);
#else
__is_assignable_test(_Tp, _Arg&);
#endif
template <class _Arg>
false_type
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
__is_assignable_test(__any, _Arg&&);
#else
__is_assignable_test(__any, _Arg&);
#endif
template <class _Tp, class _Arg, bool = is_void<_Tp>::value || is_void<_Arg>::value>
struct __is_assignable_imp
: public common_type
<
decltype(_VSTD::__is_assignable_test(declval<_Tp>(), declval<_Arg>()))
>::type {};
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 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp, class _Arg> _LIBCPP_CONSTEXPR bool is_assignable_v
= is_assignable<_Tp, _Arg>::value;
#endif
// is_copy_assignable
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY 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 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_copy_assignable_v
= is_copy_assignable<_Tp>::value;
#endif
// is_move_assignable
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_move_assignable
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
: public is_assignable<typename add_lvalue_reference<_Tp>::type,
const typename add_rvalue_reference<_Tp>::type> {};
#else
: public is_copy_assignable<_Tp> {};
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_move_assignable_v
= is_move_assignable<_Tp>::value;
#endif
// 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 "std::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(_VSTD::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 _VSTD::integral_constant<bool,
__is_destructor_wellformed<typename _VSTD::remove_all_extents<_Tp>::type>::value> {};
template <class _Tp>
struct __destructible_imp<_Tp, true>
: public _VSTD::true_type {};
template <class _Tp, bool>
struct __destructible_false;
template <class _Tp>
struct __destructible_false<_Tp, false> : public __destructible_imp<_Tp, _VSTD::is_reference<_Tp>::value> {};
template <class _Tp>
struct __destructible_false<_Tp, true> : public _VSTD::false_type {};
template <class _Tp>
struct is_destructible
: public __destructible_false<_Tp, _VSTD::is_function<_Tp>::value> {};
template <class _Tp>
struct is_destructible<_Tp[]>
: public _VSTD::false_type {};
template <>
struct is_destructible<void>
: public _VSTD::false_type {};
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
template <class _Tp> _LIBCPP_CONSTEXPR bool is_destructible_v
= is_destructible<_Tp>::value;
#endif
// move
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename remove_reference<_Tp>::type&&
move(_Tp&& __t) _NOEXCEPT
{
typedef typename remove_reference<_Tp>::type _Up;
return static_cast<_Up&&>(__t);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&&
forward(typename std::remove_reference<_Tp>::type& __t) _NOEXCEPT
{
return static_cast<_Tp&&>(__t);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&&
forward(typename std::remove_reference<_Tp>::type&& __t) _NOEXCEPT
{
static_assert(!std::is_lvalue_reference<_Tp>::value,
"Can not forward an rvalue as an lvalue.");
return static_cast<_Tp&&>(__t);
}
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
_Tp&
move(_Tp& __t)
{
return __t;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
const _Tp&
move(const _Tp& __t)
{
return __t;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
_Tp&
forward(typename std::remove_reference<_Tp>::type& __t) _NOEXCEPT
{
return __t;
}
template <class _Tp>
class __rv
{
typedef typename remove_reference<_Tp>::type _Trr;
_Trr& t_;
public:
_LIBCPP_INLINE_VISIBILITY
_Trr* operator->() {return &t_;}
_LIBCPP_INLINE_VISIBILITY
explicit __rv(_Trr& __t) : t_(__t) {}
};
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
typename decay<_Tp>::type
__decay_copy(_Tp&& __t)
{
return _VSTD::forward<_Tp>(__t);
}
#else
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
typename decay<_Tp>::type
__decay_copy(const _Tp& __t)
{
return _VSTD::forward<_Tp>(__t);
}
#endif
#ifndef _LIBCPP_HAS_NO_VARIADICS
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(_GNUC_VER) && _GNUC_VER >= 409)
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) || _GNUC_VER >= 409
#else // _LIBCPP_HAS_NO_VARIADICS
template <class _Rp, class _Class>
struct __member_pointer_traits_imp<_Rp (_Class::*)(), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) ();
};
template <class _Rp, class _Class>
struct __member_pointer_traits_imp<_Rp (_Class::*)(...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (...);
};
template <class _Rp, class _Class, class _P0>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_P0);
};
template <class _Rp, class _Class, class _P0>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, ...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_P0, ...);
};
template <class _Rp, class _Class, class _P0, class _P1>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_P0, _P1);
};
template <class _Rp, class _Class, class _P0, class _P1>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, ...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_P0, _P1, ...);
};
template <class _Rp, class _Class, class _P0, class _P1, class _P2>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_P0, _P1, _P2);
};
template <class _Rp, class _Class, class _P0, class _P1, class _P2>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2, ...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_P0, _P1, _P2, ...);
};
template <class _Rp, class _Class>
struct __member_pointer_traits_imp<_Rp (_Class::*)() const, true, false>
{
typedef _Class const _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) ();
};
template <class _Rp, class _Class>
struct __member_pointer_traits_imp<_Rp (_Class::*)(...) const, true, false>
{
typedef _Class const _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (...);
};
template <class _Rp, class _Class, class _P0>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0) const, true, false>
{
typedef _Class const _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_P0);