// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#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_scoped_enum; // C++23
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;
template<class T> struct type_identity; // C++20
template<class T>
using type_identity_t = typename type_identity<T>::type; // C++20
// 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;
template <class T> struct is_bounded_array; // C++20
template <class T> struct is_unbounded_array; // C++20
// 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; // Deprecated in C++17; removed in C++20
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> struct is_aggregate; // C++17
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, class U> struct is_swappable_with; // C++17
template <class T> struct is_swappable; // C++17
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, class U> struct is_nothrow_swappable_with; // C++17
template <class T> struct is_nothrow_swappable; // C++17
template <class T> struct is_nothrow_destructible;
template <class T> struct has_virtual_destructor;
template<class T> struct has_unique_object_representations; // C++17
// Relationships between types:
template <class T, class U> struct is_same;
template <class Base, class Derived> struct is_base_of;
template <class Base, class Derived> struct is_virtual_base_of; // C++26
template <class From, class To> struct is_convertible;
template <typename From, typename To> struct is_nothrow_convertible; // C++20
template <typename From, typename To> inline constexpr bool is_nothrow_convertible_v; // C++20
template <class Fn, class... ArgTypes> struct is_invocable;
template <class R, class Fn, class... ArgTypes> struct is_invocable_r;
template <class Fn, class... ArgTypes> struct is_nothrow_invocable;
template <class R, class Fn, class... ArgTypes> struct is_nothrow_invocable_r;
// Alignment properties and transformations:
template <class T> struct alignment_of;
template <size_t Len, size_t Align = most_stringent_alignment_requirement>
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;
template <class... T> struct common_type;
template <class T> struct underlying_type;
template <class> class result_of; // undefined; deprecated in C++17; removed in C++20
template <class Fn, class... ArgTypes> class result_of<Fn(ArgTypes...)>; // deprecated in C++17; removed in C++20
template <class Fn, class... ArgTypes> struct invoke_result; // C++17
// 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
template <class T>
inline constexpr bool is_bounded_array_v
= is_bounded_array<T>::value; // C++20
inline constexpr bool is_unbounded_array_v
= is_unbounded_array<T>::value; // C++20
// 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, size_t Align=default-alignment>
using aligned_storage_t = typename aligned_storage<Len,Align>::type; // C++14
template <size_t Len, class... Types>
using aligned_union_t = typename aligned_union<Len,Types...>::type; // C++14
template <class T>
using remove_cvref_t = typename remove_cvref<T>::type; // C++20
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 T>
using result_of_t = typename result_of<T>::type; // C++14; deprecated in C++17; removed in C++20
template <class Fn, class... ArgTypes>
using invoke_result_t = typename invoke_result<Fn, ArgTypes...>::type; // C++17
template <class...>
using void_t = void; // C++17
// See C++14 20.10.4.1, primary type categories
template <class T> inline constexpr bool is_void_v
= is_void<T>::value; // C++17
template <class T> inline constexpr bool is_null_pointer_v
= is_null_pointer<T>::value; // C++17
template <class T> inline constexpr bool is_integral_v
= is_integral<T>::value; // C++17
template <class T> inline constexpr bool is_floating_point_v
= is_floating_point<T>::value; // C++17
template <class T> inline constexpr bool is_array_v
= is_array<T>::value; // C++17
template <class T> inline constexpr bool is_pointer_v
= is_pointer<T>::value; // C++17
template <class T> inline constexpr bool is_lvalue_reference_v
= is_lvalue_reference<T>::value; // C++17
template <class T> inline constexpr bool is_rvalue_reference_v
= is_rvalue_reference<T>::value; // C++17
template <class T> inline constexpr bool is_member_object_pointer_v
= is_member_object_pointer<T>::value; // C++17
template <class T> inline constexpr bool is_member_function_pointer_v
= is_member_function_pointer<T>::value; // C++17
template <class T> inline constexpr bool is_enum_v
= is_enum<T>::value; // C++17
template <class T> inline constexpr bool is_union_v
= is_union<T>::value; // C++17
template <class T> inline constexpr bool is_class_v
= is_class<T>::value; // C++17
template <class T> inline constexpr bool is_function_v
= is_function<T>::value; // C++17
// See C++14 20.10.4.2, composite type categories
template <class T> inline constexpr bool is_reference_v
= is_reference<T>::value; // C++17
template <class T> inline constexpr bool is_arithmetic_v
= is_arithmetic<T>::value; // C++17
template <class T> inline constexpr bool is_fundamental_v
= is_fundamental<T>::value; // C++17
template <class T> inline constexpr bool is_object_v
= is_object<T>::value; // C++17
template <class T> inline constexpr bool is_scalar_v
= is_scalar<T>::value; // C++17
template <class T> inline constexpr bool is_compound_v
= is_compound<T>::value; // C++17
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++23
// See C++14 20.10.4.3, type properties
template <class T> inline constexpr bool is_const_v
= is_const<T>::value; // C++17
template <class T> inline constexpr bool is_volatile_v
= is_volatile<T>::value; // C++17
template <class T> inline constexpr bool is_trivial_v
= is_trivial<T>::value; // C++17
template <class T> inline constexpr bool is_trivially_copyable_v
= is_trivially_copyable<T>::value; // C++17
template <class T> inline constexpr bool is_standard_layout_v
= is_standard_layout<T>::value; // C++17
template <class T> inline constexpr bool is_pod_v
= is_pod<T>::value; // C++17
template <class T> inline constexpr bool is_literal_type_v
= is_literal_type<T>::value; // C++17; deprecated in C++17; removed in C++20
template <class T> inline constexpr bool is_empty_v
= is_empty<T>::value; // C++17
template <class T> inline constexpr bool is_polymorphic_v
= is_polymorphic<T>::value; // C++17
template <class T> inline constexpr bool is_abstract_v
= is_abstract<T>::value; // C++17
template <class T> inline constexpr bool is_final_v
= is_final<T>::value; // C++17
template <class T> inline constexpr bool is_aggregate_v
= is_aggregate<T>::value; // C++17
template <class T> inline constexpr bool is_signed_v
= is_signed<T>::value; // C++17
template <class T> inline constexpr bool is_unsigned_v
= is_unsigned<T>::value; // C++17
template <class T, class... Args> inline constexpr bool is_constructible_v
= is_constructible<T, Args...>::value; // C++17
template <class T> inline constexpr bool is_default_constructible_v
= is_default_constructible<T>::value; // C++17
template <class T> inline constexpr bool is_copy_constructible_v
= is_copy_constructible<T>::value; // C++17
template <class T> inline constexpr bool is_move_constructible_v
= is_move_constructible<T>::value; // C++17
template <class T, class U> inline constexpr bool is_assignable_v
= is_assignable<T, U>::value; // C++17
template <class T> inline constexpr bool is_copy_assignable_v
= is_copy_assignable<T>::value; // C++17
template <class T> inline constexpr bool is_move_assignable_v
= is_move_assignable<T>::value; // C++17
template <class T, class U> inline constexpr bool is_swappable_with_v
= is_swappable_with<T, U>::value; // C++17
template <class T> inline constexpr bool is_swappable_v
= is_swappable<T>::value; // C++17
template <class T> inline constexpr bool is_destructible_v
= is_destructible<T>::value; // C++17
template <class T, class... Args> inline constexpr bool is_trivially_constructible_v
= is_trivially_constructible<T, Args...>::value; // C++17
template <class T> inline constexpr bool is_trivially_default_constructible_v
= is_trivially_default_constructible<T>::value; // C++17
template <class T> inline constexpr bool is_trivially_copy_constructible_v
= is_trivially_copy_constructible<T>::value; // C++17
template <class T> inline constexpr bool is_trivially_move_constructible_v
= is_trivially_move_constructible<T>::value; // C++17
template <class T, class U> inline constexpr bool is_trivially_assignable_v
= is_trivially_assignable<T, U>::value; // C++17
template <class T> inline constexpr bool is_trivially_copy_assignable_v
= is_trivially_copy_assignable<T>::value; // C++17
template <class T> inline constexpr bool is_trivially_move_assignable_v
= is_trivially_move_assignable<T>::value; // C++17
template <class T> inline constexpr bool is_trivially_destructible_v
= is_trivially_destructible<T>::value; // C++17
template <class T, class... Args> inline constexpr bool is_nothrow_constructible_v
= is_nothrow_constructible<T, Args...>::value; // C++17
template <class T> inline constexpr bool is_nothrow_default_constructible_v
= is_nothrow_default_constructible<T>::value; // C++17
template <class T> inline constexpr bool is_nothrow_copy_constructible_v
= is_nothrow_copy_constructible<T>::value; // C++17
template <class T> inline constexpr bool is_nothrow_move_constructible_v
= is_nothrow_move_constructible<T>::value; // C++17
template <class T, class U> inline constexpr bool is_nothrow_assignable_v
= is_nothrow_assignable<T, U>::value; // C++17
template <class T> inline constexpr bool is_nothrow_copy_assignable_v
= is_nothrow_copy_assignable<T>::value; // C++17
template <class T> inline constexpr bool is_nothrow_move_assignable_v
= is_nothrow_move_assignable<T>::value; // C++17
template <class T, class U> inline constexpr bool is_nothrow_swappable_with_v
= is_nothrow_swappable_with<T, U>::value; // C++17
template <class T> inline constexpr bool is_nothrow_swappable_v
= is_nothrow_swappable<T>::value; // C++17
template <class T> inline constexpr bool is_nothrow_destructible_v
= is_nothrow_destructible<T>::value; // C++17
template <class T> inline constexpr bool has_virtual_destructor_v
= has_virtual_destructor<T>::value; // C++17
template<class T> inline constexpr bool has_unique_object_representations_v // C++17
= has_unique_object_representations<T>::value;
// See C++14 20.10.5, type property queries
template <class T> inline constexpr size_t alignment_of_v
= alignment_of<T>::value; // C++17
template <class T> inline constexpr size_t rank_v
= rank<T>::value; // C++17
template <class T, unsigned I = 0> inline constexpr size_t extent_v
= extent<T, I>::value; // C++17
// See C++14 20.10.6, type relations
template <class T, class U> inline constexpr bool is_same_v
= is_same<T, U>::value; // C++17
template <class Base, class Derived> inline constexpr bool is_base_of_v
= is_base_of<Base, Derived>::value; // C++17
template <class Base, class Derived> inline constexpr bool is_virtual_base_of_v
= is_virtual_base_of<Base, Derived>::value; // C++26
template <class From, class To> inline constexpr bool is_convertible_v
= is_convertible<From, To>::value; // C++17
template <class Fn, class... ArgTypes> inline constexpr bool is_invocable_v
= is_invocable<Fn, ArgTypes...>::value; // C++17
template <class R, class Fn, class... ArgTypes> inline constexpr bool is_invocable_r_v
= is_invocable_r<R, Fn, ArgTypes...>::value; // C++17
template <class Fn, class... ArgTypes> inline constexpr bool is_nothrow_invocable_v
= is_nothrow_invocable<Fn, ArgTypes...>::value; // C++17
template <class R, class Fn, class... ArgTypes> inline constexpr bool is_nothrow_invocable_r_v
= is_nothrow_invocable_r<R, Fn, ArgTypes...>::value; // C++17
// [meta.logical], logical operator traits:
template<class... B> struct conjunction; // C++17
template<class... B>
inline constexpr bool conjunction_v = conjunction<B...>::value; // C++17
template<class... B> struct disjunction; // C++17
template<class... B>
inline constexpr bool disjunction_v = disjunction<B...>::value; // C++17
template<class B> struct negation; // C++17
template<class B>
inline constexpr bool negation_v = negation<B>::value; // C++17
}
*/
#include <__config>
#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/common_type.h>
#include <__type_traits/conditional.h>
#include <__type_traits/decay.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/extent.h>
#include <__type_traits/has_virtual_destructor.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_abstract.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_class.h>
#include <__type_traits/is_compound.h>
#include <__type_traits/is_const.h>
#include <__type_traits/is_constructible.h>
#include <__type_traits/is_convertible.h>
#include <__type_traits/is_destructible.h>
#include <__type_traits/is_empty.h>
#include <__type_traits/is_enum.h>
#include <__type_traits/is_floating_point.h>
#include <__type_traits/is_function.h>
#include <__type_traits/is_fundamental.h>
#include <__type_traits/is_integral.h>
#include <__type_traits/is_literal_type.h>
#include <__type_traits/is_member_pointer.h>
#include <__type_traits/is_nothrow_assignable.h>
#include <__type_traits/is_nothrow_constructible.h>
#include <__type_traits/is_nothrow_destructible.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_same.h>
#include <__type_traits/is_scalar.h>
#include <__type_traits/is_signed.h>
#include <__type_traits/is_standard_layout.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_copyable.h>
#include <__type_traits/is_trivially_destructible.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_signed.h>
#include <__type_traits/make_unsigned.h>
#include <__type_traits/rank.h>
#include <__type_traits/remove_all_extents.h>
#include <__type_traits/remove_const.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/underlying_type.h>
#if _LIBCPP_STD_VER >= 14
# include <__type_traits/is_final.h>
# include <__type_traits/is_null_pointer.h>
#endif
#if _LIBCPP_STD_VER >= 17
# include <__type_traits/conjunction.h>
# include <__type_traits/disjunction.h>
# include <__type_traits/has_unique_object_representation.h>
# include <__type_traits/invoke.h>
# include <__type_traits/is_aggregate.h>
# include <__type_traits/is_swappable.h>
# include <__type_traits/negation.h>
# include <__type_traits/void_t.h>
#endif
#if _LIBCPP_STD_VER >= 20
# include <__type_traits/common_reference.h>
# include <__type_traits/is_bounded_array.h>
# include <__type_traits/is_constant_evaluated.h>
# include <__type_traits/is_nothrow_convertible.h>
# include <__type_traits/is_unbounded_array.h>
# include <__type_traits/type_identity.h>
# include <__type_traits/unwrap_ref.h>
#endif
#include <version>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#endif // _LIBCPP_TYPE_TRAITS
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