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[libc++] Granularize some more type_traits 

Reviewed By: ldionne, #libc

Spies: libcxx-commits, mgorny

Differential Revision: https://reviews.llvm.org/D128948
This commit is contained in:
Nikolas Klauser 2022-07-24 16:03:12 +02:00
parent ea29810c9d
commit b7aa9c4ac8
31 changed files with 1333 additions and 792 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
libcxx/include/CMakeLists.txt
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@ -505,10 +505,16 @@ set(files
__type_traits/add_pointer.h
__type_traits/add_rvalue_reference.h
__type_traits/add_volatile.h
__type_traits/aligned_storage.h
__type_traits/aligned_union.h
__type_traits/alignment_of.h
__type_traits/apply_cv.h
__type_traits/common_reference.h
__type_traits/common_type.h
__type_traits/conditional.h
__type_traits/conjunction.h
__type_traits/copy_cv.h
__type_traits/copy_cvref.h
__type_traits/decay.h
__type_traits/disjunction.h
__type_traits/enable_if.h
@ -550,6 +556,7 @@ set(files
__type_traits/is_move_constructible.h
__type_traits/is_nothrow_assignable.h
__type_traits/is_nothrow_constructible.h
__type_traits/is_nothrow_convertible.h
__type_traits/is_nothrow_copy_assignable.h
__type_traits/is_nothrow_copy_constructible.h
__type_traits/is_nothrow_default_constructible.h
@ -561,6 +568,7 @@ set(files
__type_traits/is_pod.h
__type_traits/is_pointer.h
__type_traits/is_polymorphic.h
__type_traits/is_primary_template.h
__type_traits/is_reference.h
__type_traits/is_reference_wrapper.h
__type_traits/is_referenceable.h
@ -568,6 +576,7 @@ set(files
__type_traits/is_scalar.h
__type_traits/is_scoped_enum.h
__type_traits/is_signed.h
__type_traits/is_signed_integer.h
__type_traits/is_standard_layout.h
__type_traits/is_trivial.h
__type_traits/is_trivially_assignable.h
@ -582,18 +591,28 @@ set(files
__type_traits/is_unbounded_array.h
__type_traits/is_union.h
__type_traits/is_unsigned.h
__type_traits/is_unsigned_integer.h
__type_traits/is_valid_expansion.h
__type_traits/is_void.h
__type_traits/is_volatile.h
__type_traits/lazy.h
__type_traits/make_32_64_or_128_bit.h
__type_traits/make_signed.h
__type_traits/make_unsigned.h
__type_traits/nat.h
__type_traits/negation.h
__type_traits/promote.h
__type_traits/rank.h
__type_traits/remove_all_extents.h
__type_traits/remove_const.h
__type_traits/remove_cv.h
__type_traits/remove_cvref.h
__type_traits/remove_extent.h
__type_traits/remove_pointer.h
__type_traits/remove_reference.h
__type_traits/remove_volatile.h
__type_traits/type_identity.h
__type_traits/type_list.h
__type_traits/underlying_type.h
__type_traits/void_t.h
__undef_macros

2
libcxx/include/__concepts/arithmetic.h
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@ -10,6 +10,8 @@
#define _LIBCPP___CONCEPTS_ARITHMETIC_H
#include <__config>
#include <__type_traits/is_signed_integer.h>
#include <__type_traits/is_unsigned_integer.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

1
libcxx/include/__format/formatter_integer.h
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@ -19,6 +19,7 @@
#include <__format/formatter_integral.h>
#include <__format/formatter_output.h>
#include <__format/parser_std_format_spec.h>
#include <__type_traits/make_32_64_or_128_bit.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

11
libcxx/include/__functional/invoke.h
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@ -24,6 +24,7 @@
#include <__type_traits/is_reference_wrapper.h>
#include <__type_traits/is_same.h>
#include <__type_traits/is_void.h>
#include <__type_traits/nat.h>
#include <__type_traits/remove_cv.h>
#include <__utility/declval.h>
#include <__utility/forward.h>
@ -41,16 +42,6 @@ struct __any
__any(...);
};
struct __nat
{
#ifndef _LIBCPP_CXX03_LANG
__nat() = delete;
__nat(const __nat&) = delete;
__nat& operator=(const __nat&) = delete;
~__nat() = delete;
#endif
};
template <class _MP, bool _IsMemberFunctionPtr, bool _IsMemberObjectPtr>
struct __member_pointer_traits_imp
{

1
libcxx/include/__iterator/incrementable_traits.h
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@ -11,6 +11,7 @@
#define _LIBCPP___ITERATOR_INCREMENTABLE_TRAITS_H
#include <__config>
#include <__type_traits/is_primary_template.h>
#include <concepts>
#include <type_traits>

1
libcxx/include/__memory/temporary_buffer.h
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@ -11,6 +11,7 @@
#define _LIBCPP___MEMORY_TEMPORARY_BUFFER_H
#include <__config>
#include <__type_traits/alignment_of.h>
#include <__utility/pair.h>
#include <cstddef>
#include <new>

142
libcxx/include/__type_traits/aligned_storage.h Normal file
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@ -0,0 +1,142 @@
//===----------------------------------------------------------------------===//
//
// 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_ALIGNED_STORAGE_H
#define _LIBCPP___TYPE_TRAITS_ALIGNED_STORAGE_H
#include <__config>
#include <__type_traits/conditional.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/nat.h>
#include <__type_traits/type_list.h>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp>
struct __align_type
{
static const size_t value = _LIBCPP_PREFERRED_ALIGNOF(_Tp);
typedef _Tp type;
};
struct __struct_double {long double __lx;};
struct __struct_double4 {double __lx[4];};
typedef
__type_list<__align_type<unsigned char>,
__type_list<__align_type<unsigned short>,
__type_list<__align_type<unsigned int>,
__type_list<__align_type<unsigned long>,
__type_list<__align_type<unsigned long long>,
__type_list<__align_type<double>,
__type_list<__align_type<long double>,
__type_list<__align_type<__struct_double>,
__type_list<__align_type<__struct_double4>,
__type_list<__align_type<int*>,
__nat
> > > > > > > > > > __all_types;
template <size_t _Align>
struct _ALIGNAS(_Align) __fallback_overaligned {};
template <class _TL, size_t _Align> struct __find_pod;
template <class _Hp, size_t _Align>
struct __find_pod<__type_list<_Hp, __nat>, _Align>
{
typedef typename conditional<
_Align == _Hp::value,
typename _Hp::type,
__fallback_overaligned<_Align>
>::type type;
};
template <class _Hp, class _Tp, size_t _Align>
struct __find_pod<__type_list<_Hp, _Tp>, _Align>
{
typedef typename conditional<
_Align == _Hp::value,
typename _Hp::type,
typename __find_pod<_Tp, _Align>::type
>::type type;
};
template <class _TL, size_t _Len> struct __find_max_align;
template <class _Hp, size_t _Len>
struct __find_max_align<__type_list<_Hp, __nat>, _Len> : public integral_constant<size_t, _Hp::value> {};
template <size_t _Len, size_t _A1, size_t _A2>
struct __select_align
{
private:
static const size_t __min = _A2 < _A1 ? _A2 : _A1;
static const size_t __max = _A1 < _A2 ? _A2 : _A1;
public:
static const size_t value = _Len < __max ? __min : __max;
};
template <class _Hp, class _Tp, size_t _Len>
struct __find_max_align<__type_list<_Hp, _Tp>, _Len>
: public integral_constant<size_t, __select_align<_Len, _Hp::value, __find_max_align<_Tp, _Len>::value>::value> {};
template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value>
struct _LIBCPP_TEMPLATE_VIS aligned_storage
{
typedef typename __find_pod<__all_types, _Align>::type _Aligner;
union type
{
_Aligner __align;
unsigned char __data[(_Len + _Align - 1)/_Align * _Align];
};
};
#if _LIBCPP_STD_VER > 11
template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value>
using aligned_storage_t = typename aligned_storage<_Len, _Align>::type;
#endif
#define _CREATE_ALIGNED_STORAGE_SPECIALIZATION(n) \
template <size_t _Len>\
struct _LIBCPP_TEMPLATE_VIS aligned_storage<_Len, n>\
{\
struct _ALIGNAS(n) type\
{\
unsigned char __lx[(_Len + n - 1)/n * n];\
};\
}
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x8);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x10);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x20);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x40);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x80);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x100);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x200);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x400);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x800);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1000);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2000);
// PE/COFF does not support alignment beyond 8192 (=0x2000)
#if !defined(_LIBCPP_OBJECT_FORMAT_COFF)
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4000);
#endif // !defined(_LIBCPP_OBJECT_FORMAT_COFF)
#undef _CREATE_ALIGNED_STORAGE_SPECIALIZATION
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_ALIGNED_STORAGE_H

55
libcxx/include/__type_traits/aligned_union.h Normal file
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@ -0,0 +1,55 @@
//===----------------------------------------------------------------------===//
//
// 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_ALIGNED_UNION_H
#define _LIBCPP___TYPE_TRAITS_ALIGNED_UNION_H
#include <__config>
#include <__type_traits/aligned_storage.h>
#include <__type_traits/integral_constant.h>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <size_t _I0, size_t ..._In>
struct __static_max;
template <size_t _I0>
struct __static_max<_I0>
{
static const size_t value = _I0;
};
template <size_t _I0, size_t _I1, size_t ..._In>
struct __static_max<_I0, _I1, _In...>
{
static const size_t value = _I0 >= _I1 ? __static_max<_I0, _In...>::value :
__static_max<_I1, _In...>::value;
};
template <size_t _Len, class _Type0, class ..._Types>
struct aligned_union
{
static const size_t alignment_value = __static_max<_LIBCPP_PREFERRED_ALIGNOF(_Type0),
_LIBCPP_PREFERRED_ALIGNOF(_Types)...>::value;
static const size_t __len = __static_max<_Len, sizeof(_Type0),
sizeof(_Types)...>::value;
typedef typename aligned_storage<__len, alignment_value>::type type;
};
#if _LIBCPP_STD_VER > 11
template <size_t _Len, class ..._Types> using aligned_union_t = typename aligned_union<_Len, _Types...>::type;
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_ALIGNED_UNION_H

188
libcxx/include/__type_traits/common_reference.h Normal file
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@ -0,0 +1,188 @@
//===----------------------------------------------------------------------===//
//
// 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_COMMON_REFERENCE_H
#define _LIBCPP___TYPE_TRAITS_COMMON_REFERENCE_H
#include <__config>
#include <__type_traits/common_type.h>
#include <__type_traits/copy_cv.h>
#include <__type_traits/copy_cvref.h>
#include <__type_traits/is_convertible.h>
#include <__type_traits/is_reference.h>
#include <__type_traits/remove_cv.h>
#include <__type_traits/remove_cvref.h>
#include <__type_traits/remove_reference.h>
#include <__utility/declval.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
// common_reference
#if _LIBCPP_STD_VER > 17
// Let COND_RES(X, Y) be:
template <class _Xp, class _Yp>
using __cond_res =
decltype(false ? declval<_Xp(&)()>()() : declval<_Yp(&)()>()());
// Let `XREF(A)` denote a unary alias template `T` such that `T<U>` denotes the same type as `U`
// with the addition of `A`'s cv and reference qualifiers, for a non-reference cv-unqualified type
// `U`.
// [Note: `XREF(A)` is `__xref<A>::template __apply`]
template <class _Tp>
struct __xref {
template<class _Up>
using __apply = __copy_cvref_t<_Tp, _Up>;
};
// Given types A and B, let X be remove_reference_t<A>, let Y be remove_reference_t<B>,
// and let COMMON-REF(A, B) be:
template<class _Ap, class _Bp, class _Xp = remove_reference_t<_Ap>, class _Yp = remove_reference_t<_Bp>>
struct __common_ref;
template<class _Xp, class _Yp>
using __common_ref_t = typename __common_ref<_Xp, _Yp>::__type;
template<class _Xp, class _Yp>
using __cv_cond_res = __cond_res<__copy_cv_t<_Xp, _Yp>&, __copy_cv_t<_Yp, _Xp>&>;
// If A and B are both lvalue reference types, COMMON-REF(A, B) is
// COND-RES(COPYCV(X, Y)&, COPYCV(Y, X)&) if that type exists and is a reference type.
template<class _Ap, class _Bp, class _Xp, class _Yp>
requires requires { typename __cv_cond_res<_Xp, _Yp>; } && is_reference_v<__cv_cond_res<_Xp, _Yp>>
struct __common_ref<_Ap&, _Bp&, _Xp, _Yp>
{
using __type = __cv_cond_res<_Xp, _Yp>;
};
// Otherwise, let C be remove_reference_t<COMMON-REF(X&, Y&)>&&. ...
template <class _Xp, class _Yp>
using __common_ref_C = remove_reference_t<__common_ref_t<_Xp&, _Yp&>>&&;
// .... If A and B are both rvalue reference types, C is well-formed, and
// is_convertible_v<A, C> && is_convertible_v<B, C> is true, then COMMON-REF(A, B) is C.
template<class _Ap, class _Bp, class _Xp, class _Yp>
requires
requires { typename __common_ref_C<_Xp, _Yp>; } &&
is_convertible_v<_Ap&&, __common_ref_C<_Xp, _Yp>> &&
is_convertible_v<_Bp&&, __common_ref_C<_Xp, _Yp>>
struct __common_ref<_Ap&&, _Bp&&, _Xp, _Yp>
{
using __type = __common_ref_C<_Xp, _Yp>;
};
// Otherwise, let D be COMMON-REF(const X&, Y&). ...
template <class _Tp, class _Up>
using __common_ref_D = __common_ref_t<const _Tp&, _Up&>;
// ... If A is an rvalue reference and B is an lvalue reference and D is well-formed and
// is_convertible_v<A, D> is true, then COMMON-REF(A, B) is D.
template<class _Ap, class _Bp, class _Xp, class _Yp>
requires requires { typename __common_ref_D<_Xp, _Yp>; } &&
is_convertible_v<_Ap&&, __common_ref_D<_Xp, _Yp>>
struct __common_ref<_Ap&&, _Bp&, _Xp, _Yp>
{
using __type = __common_ref_D<_Xp, _Yp>;
};
// Otherwise, if A is an lvalue reference and B is an rvalue reference, then
// COMMON-REF(A, B) is COMMON-REF(B, A).
template<class _Ap, class _Bp, class _Xp, class _Yp>
struct __common_ref<_Ap&, _Bp&&, _Xp, _Yp> : __common_ref<_Bp&&, _Ap&> {};
// Otherwise, COMMON-REF(A, B) is ill-formed.
template<class _Ap, class _Bp, class _Xp, class _Yp>
struct __common_ref {};
// Note C: For the common_reference trait applied to a parameter pack [...]
template <class...>
struct common_reference;
template <class... _Types>
using common_reference_t = typename common_reference<_Types...>::type;
// bullet 1 - sizeof...(T) == 0
template<>
struct common_reference<> {};
// bullet 2 - sizeof...(T) == 1
template <class _Tp>
struct common_reference<_Tp>
{
using type = _Tp;
};
// bullet 3 - sizeof...(T) == 2
template <class _Tp, class _Up> struct __common_reference_sub_bullet3;
template <class _Tp, class _Up> struct __common_reference_sub_bullet2 : __common_reference_sub_bullet3<_Tp, _Up> {};
template <class _Tp, class _Up> struct __common_reference_sub_bullet1 : __common_reference_sub_bullet2<_Tp, _Up> {};
// sub-bullet 1 - If T1 and T2 are reference types and COMMON-REF(T1, T2) is well-formed, then
// the member typedef `type` denotes that type.
template <class _Tp, class _Up> struct common_reference<_Tp, _Up> : __common_reference_sub_bullet1<_Tp, _Up> {};
template <class _Tp, class _Up>
requires is_reference_v<_Tp> && is_reference_v<_Up> && requires { typename __common_ref_t<_Tp, _Up>; }
struct __common_reference_sub_bullet1<_Tp, _Up>
{
using type = __common_ref_t<_Tp, _Up>;
};
// sub-bullet 2 - Otherwise, if basic_common_reference<remove_cvref_t<T1>, remove_cvref_t<T2>, XREF(T1), XREF(T2)>::type
// is well-formed, then the member typedef `type` denotes that type.
template <class, class, template <class> class, template <class> class> struct basic_common_reference {};
template <class _Tp, class _Up>
using __basic_common_reference_t = typename basic_common_reference<
remove_cvref_t<_Tp>, remove_cvref_t<_Up>,
__xref<_Tp>::template __apply, __xref<_Up>::template __apply>::type;
template <class _Tp, class _Up>
requires requires { typename __basic_common_reference_t<_Tp, _Up>; }
struct __common_reference_sub_bullet2<_Tp, _Up>
{
using type = __basic_common_reference_t<_Tp, _Up>;
};
// sub-bullet 3 - Otherwise, if COND-RES(T1, T2) is well-formed,
// then the member typedef `type` denotes that type.
template <class _Tp, class _Up>
requires requires { typename __cond_res<_Tp, _Up>; }
struct __common_reference_sub_bullet3<_Tp, _Up>
{
using type = __cond_res<_Tp, _Up>;
};
// sub-bullet 4 & 5 - Otherwise, if common_type_t<T1, T2> is well-formed,
// then the member typedef `type` denotes that type.
// - Otherwise, there shall be no member `type`.
template <class _Tp, class _Up> struct __common_reference_sub_bullet3 : common_type<_Tp, _Up> {};
// bullet 4 - If there is such a type `C`, the member typedef type shall denote the same type, if
// any, as `common_reference_t<C, Rest...>`.
template <class _Tp, class _Up, class _Vp, class... _Rest>
requires requires { typename common_reference_t<_Tp, _Up>; }
struct common_reference<_Tp, _Up, _Vp, _Rest...>
: common_reference<common_reference_t<_Tp, _Up>, _Vp, _Rest...>
{};
// bullet 5 - Otherwise, there shall be no member `type`.
template <class...> struct common_reference {};
#endif // _LIBCPP_STD_VER > 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_COMMON_REFERENCE_H

138
libcxx/include/__type_traits/common_type.h Normal file
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@ -0,0 +1,138 @@
//===----------------------------------------------------------------------===//
//
// 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_COMMON_TYPE_H
#define _LIBCPP___TYPE_TRAITS_COMMON_TYPE_H
#include <__config>
#include <__type_traits/conditional.h>
#include <__type_traits/decay.h>
#include <__type_traits/is_same.h>
#include <__type_traits/remove_cvref.h>
#include <__type_traits/void_t.h>
#include <__utility/declval.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 17
// Let COND_RES(X, Y) be:
template <class _Tp, class _Up>
using __cond_type = decltype(false ? declval<_Tp>() : declval<_Up>());
template <class _Tp, class _Up, class = void>
struct __common_type3 {};
// sub-bullet 4 - "if COND_RES(CREF(D1), CREF(D2)) denotes a type..."
template <class _Tp, class _Up>
struct __common_type3<_Tp, _Up, void_t<__cond_type<const _Tp&, const _Up&>>>
{
using type = remove_cvref_t<__cond_type<const _Tp&, const _Up&>>;
};
template <class _Tp, class _Up, class = void>
struct __common_type2_imp : __common_type3<_Tp, _Up> {};
#else
template <class _Tp, class _Up, class = void>
struct __common_type2_imp {};
#endif
// sub-bullet 3 - "if decay_t<decltype(false ? declval<D1>() : declval<D2>())> ..."
template <class _Tp, class _Up>
struct __common_type2_imp<_Tp, _Up,
typename __void_t<decltype(
true ? declval<_Tp>() : declval<_Up>()
)>::type>
{
typedef _LIBCPP_NODEBUG typename decay<decltype(
true ? declval<_Tp>() : declval<_Up>()
)>::type type;
};
template <class, class = void>
struct __common_type_impl {};
// Clang provides variadic templates in C++03 as an extension.
#if !defined(_LIBCPP_CXX03_LANG) || defined(__clang__)
# define _LIBCPP_OPTIONAL_PACK(...) , __VA_ARGS__
template <class... _Tp>
struct __common_types;
template <class... _Tp>
struct _LIBCPP_TEMPLATE_VIS common_type;
#else
# define _LIBCPP_OPTIONAL_PACK(...)
struct __no_arg;
template <class _Tp, class _Up, class = __no_arg>
struct __common_types;
template <class _Tp = __no_arg, class _Up = __no_arg, class _Vp = __no_arg,
class _Unused = __no_arg>
struct common_type {
static_assert(sizeof(_Unused) == 0,
"common_type accepts at most 3 arguments in C++03");
};
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Up>
struct __common_type_impl<
__common_types<_Tp, _Up>,
typename __void_t<typename common_type<_Tp, _Up>::type>::type>
{
typedef typename common_type<_Tp, _Up>::type type;
};
template <class _Tp, class _Up, class _Vp _LIBCPP_OPTIONAL_PACK(class... _Rest)>
struct __common_type_impl<
__common_types<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)>,
typename __void_t<typename common_type<_Tp, _Up>::type>::type>
: __common_type_impl<__common_types<typename common_type<_Tp, _Up>::type,
_Vp _LIBCPP_OPTIONAL_PACK(_Rest...)> > {
};
// bullet 1 - sizeof...(Tp) == 0
template <>
struct _LIBCPP_TEMPLATE_VIS common_type<> {};
// bullet 2 - sizeof...(Tp) == 1
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS common_type<_Tp>
: public common_type<_Tp, _Tp> {};
// bullet 3 - sizeof...(Tp) == 2
// sub-bullet 1 - "If is_same_v<T1, D1> is false or ..."
template <class _Tp, class _Up>
struct _LIBCPP_TEMPLATE_VIS common_type<_Tp, _Up>
: conditional<
_IsSame<_Tp, typename decay<_Tp>::type>::value && _IsSame<_Up, typename decay<_Up>::type>::value,
__common_type2_imp<_Tp, _Up>,
common_type<typename decay<_Tp>::type, typename decay<_Up>::type>
>::type
{};
// bullet 4 - sizeof...(Tp) > 2
template <class _Tp, class _Up, class _Vp _LIBCPP_OPTIONAL_PACK(class... _Rest)>
struct _LIBCPP_TEMPLATE_VIS
common_type<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)>
: __common_type_impl<
__common_types<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)> > {};
#undef _LIBCPP_OPTIONAL_PACK
#if _LIBCPP_STD_VER > 11
template <class ..._Tp> using common_type_t = typename common_type<_Tp...>::type;
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_COMMON_TYPE_H

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//===----------------------------------------------------------------------===//
//
// 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_COPY_CV_H
#define _LIBCPP___TYPE_TRAITS_COPY_CV_H
#include <__config>
#include <__type_traits/add_const.h>
#include <__type_traits/add_cv.h>
#include <__type_traits/add_volatile.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
// Let COPYCV(FROM, TO) be an alias for type TO with the addition of FROM's
// top-level cv-qualifiers.
template <class _From, class _To>
struct __copy_cv
{
using type = _To;
};
template <class _From, class _To>
struct __copy_cv<const _From, _To>
{
using type = typename add_const<_To>::type;
};
template <class _From, class _To>
struct __copy_cv<volatile _From, _To>
{
using type = typename add_volatile<_To>::type;
};
template <class _From, class _To>
struct __copy_cv<const volatile _From, _To>
{
using type = typename add_cv<_To>::type;
};
template <class _From, class _To>
using __copy_cv_t = typename __copy_cv<_From, _To>::type;
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_COPY_CV_H

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//===----------------------------------------------------------------------===//
//
// 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_COPY_CVREF_H
#define _LIBCPP___TYPE_TRAITS_COPY_CVREF_H
#include <__config>
#include <__type_traits/add_lvalue_reference.h>
#include <__type_traits/add_rvalue_reference.h>
#include <__type_traits/copy_cv.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _From, class _To>
struct __copy_cvref
{
using type = __copy_cv_t<_From, _To>;
};
template <class _From, class _To>
struct __copy_cvref<_From&, _To>
{
using type = typename add_lvalue_reference<__copy_cv_t<_From, _To> >::type;
};
template <class _From, class _To>
struct __copy_cvref<_From&&, _To>
{
using type = typename add_rvalue_reference<__copy_cv_t<_From, _To> >::type;
};
template <class _From, class _To>
using __copy_cvref_t = typename __copy_cvref<_From, _To>::type;
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_COPY_CVREF_H

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//===----------------------------------------------------------------------===//
//
// 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_IS_NOTHROW_CONVERTIBLE_H
#define _LIBCPP___TYPE_TRAITS_IS_NOTHROW_CONVERTIBLE_H
#include <__config>
#include <__type_traits/conjunction.h>
#include <__type_traits/disjunction.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_convertible.h>
#include <__type_traits/is_void.h>
#include <__type_traits/lazy.h>
#include <__utility/declval.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 17
template <typename _Tp>
static void __test_noexcept(_Tp) noexcept;
template<typename _Fm, typename _To>
static bool_constant<noexcept(_VSTD::__test_noexcept<_To>(declval<_Fm>()))>
__is_nothrow_convertible_test();
template <typename _Fm, typename _To>
struct __is_nothrow_convertible_helper: decltype(__is_nothrow_convertible_test<_Fm, _To>())
{ };
template <typename _Fm, typename _To>
struct is_nothrow_convertible : _Or<
_And<is_void<_To>, is_void<_Fm>>,
_Lazy<_And, is_convertible<_Fm, _To>, __is_nothrow_convertible_helper<_Fm, _To>>
>::type { };
template <typename _Fm, typename _To>
inline constexpr bool is_nothrow_convertible_v = is_nothrow_convertible<_Fm, _To>::value;
#endif // _LIBCPP_STD_VER > 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_IS_NOTHROW_CONVERTIBLE_H

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//===----------------------------------------------------------------------===//
//
// 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_IS_PRIMARY_TEMPLATE_H
#define _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H
#include <__config>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_same.h>
#include <__type_traits/is_valid_expansion.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp>
using __test_for_primary_template = __enable_if_t<
_IsSame<_Tp, typename _Tp::__primary_template>::value
>;
template <class _Tp>
using __is_primary_template = _IsValidExpansion<
__test_for_primary_template, _Tp
>;
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H

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//===----------------------------------------------------------------------===//
//
// 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_IS_SIGNED_INTEGER_H
#define _LIBCPP___TYPE_TRAITS_IS_SIGNED_INTEGER_H
#include <__config>
#include <__type_traits/integral_constant.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp> struct __libcpp_is_signed_integer : public false_type {};
template <> struct __libcpp_is_signed_integer<signed char> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed short> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed int> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed long> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed long long> : public true_type {};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __libcpp_is_signed_integer<__int128_t> : public true_type {};
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_IS_SIGNED_INTEGER_H

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//===----------------------------------------------------------------------===//
//
// 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_IS_UNSIGNED_INTEGER_H
#define _LIBCPP___TYPE_TRAITS_IS_UNSIGNED_INTEGER_H
#include <__config>
#include <__type_traits/integral_constant.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp> struct __libcpp_is_unsigned_integer : public false_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned char> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned short> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned int> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned long> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned long long> : public true_type {};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __libcpp_is_unsigned_integer<__uint128_t> : public true_type {};
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_IS_UNSIGNED_INTEGER_H

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//===----------------------------------------------------------------------===//
//
// 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_IS_VALID_EXPANSION_H
#define _LIBCPP___TYPE_TRAITS_IS_VALID_EXPANSION_H
#include <__config>
#include <__type_traits/integral_constant.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <template <class...> class _Templ, class ..._Args, class = _Templ<_Args...> >
true_type __sfinae_test_impl(int);
template <template <class...> class, class ...>
false_type __sfinae_test_impl(...);
template <template <class ...> class _Templ, class ..._Args>
using _IsValidExpansion _LIBCPP_NODEBUG = decltype(__sfinae_test_impl<_Templ, _Args...>(0));
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_IS_VALID_EXPANSION_H

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//===----------------------------------------------------------------------===//
//
// 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_LAZY_H
#define _LIBCPP___TYPE_TRAITS_LAZY_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <template <class...> class _Func, class ..._Args>
struct _Lazy : _Func<_Args...> {};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_LAZY_H

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//===----------------------------------------------------------------------===//
//
// 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_MAKE_32_64_OR_128_BIT_H
#define _LIBCPP___TYPE_TRAITS_MAKE_32_64_OR_128_BIT_H
#include <__config>
#include <__type_traits/conditional.h>
#include <__type_traits/is_same.h>
#include <__type_traits/is_signed.h>
#include <__type_traits/is_unsigned.h>
#include <__type_traits/make_unsigned.h>
#include <cstdint>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
/// Helper to promote an integral to smallest 32, 64, or 128 bit representation.
///
/// The restriction is the same as the integral version of to_char.
template <class _Tp>
#if _LIBCPP_STD_VER > 17
requires (is_signed_v<_Tp> || is_unsigned_v<_Tp> || is_same_v<_Tp, char>)
#endif
using __make_32_64_or_128_bit_t =
__copy_unsigned_t<_Tp,
__conditional_t<sizeof(_Tp) <= sizeof(int32_t), int32_t,
__conditional_t<sizeof(_Tp) <= sizeof(int64_t), int64_t,
#ifndef _LIBCPP_HAS_NO_INT128
__conditional_t<sizeof(_Tp) <= sizeof(__int128_t), __int128_t,
/* else */ void>
#else
/* else */ void
#endif
> >
>;
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_MAKE_32_64_OR_128_BIT_H

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//===----------------------------------------------------------------------===//
//
// 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_MAKE_SIGNED_H
#define _LIBCPP___TYPE_TRAITS_MAKE_SIGNED_H
#include <__config>
#include <__type_traits/apply_cv.h>
#include <__type_traits/is_enum.h>
#include <__type_traits/is_integral.h>
#include <__type_traits/nat.h>
#include <__type_traits/remove_cv.h>
#include <__type_traits/type_list.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
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;
template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value>
struct __make_signed {};
template <class _Tp>
struct __make_signed<_Tp, true>
{
typedef typename __find_first<__signed_types, sizeof(_Tp)>::type type;
};
template <> struct __make_signed<bool, true> {};
template <> struct __make_signed< signed short, true> {typedef short type;};
template <> struct __make_signed<unsigned short, true> {typedef short type;};
template <> struct __make_signed< signed int, true> {typedef int type;};
template <> struct __make_signed<unsigned int, true> {typedef int type;};
template <> struct __make_signed< signed long, true> {typedef long type;};
template <> struct __make_signed<unsigned long, true> {typedef long type;};
template <> struct __make_signed< signed long long, true> {typedef long long type;};
template <> struct __make_signed<unsigned long long, true> {typedef long long type;};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __make_signed<__int128_t, true> {typedef __int128_t type;};
template <> struct __make_signed<__uint128_t, true> {typedef __int128_t type;};
#endif
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS make_signed
{
typedef typename __apply_cv<_Tp, typename __make_signed<typename remove_cv<_Tp>::type>::type>::type type;
};
#if _LIBCPP_STD_VER > 11
template <class _Tp> using make_signed_t = typename make_signed<_Tp>::type;
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_MAKE_SIGNED_H

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//===----------------------------------------------------------------------===//
//
// 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_MAKE_UNSIGNED_H
#define _LIBCPP___TYPE_TRAITS_MAKE_UNSIGNED_H
#include <__config>
#include <__type_traits/apply_cv.h>
#include <__type_traits/conditional.h>
#include <__type_traits/is_enum.h>
#include <__type_traits/is_integral.h>
#include <__type_traits/is_unsigned.h>
#include <__type_traits/nat.h>
#include <__type_traits/remove_cv.h>
#include <__type_traits/type_list.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
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 _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value>
struct __make_unsigned {};
template <class _Tp>
struct __make_unsigned<_Tp, true>
{
typedef typename __find_first<__unsigned_types, sizeof(_Tp)>::type type;
};
template <> struct __make_unsigned<bool, true> {};
template <> struct __make_unsigned< signed short, true> {typedef unsigned short type;};
template <> struct __make_unsigned<unsigned short, true> {typedef unsigned short type;};
template <> struct __make_unsigned< signed int, true> {typedef unsigned int type;};
template <> struct __make_unsigned<unsigned int, true> {typedef unsigned int type;};
template <> struct __make_unsigned< signed long, true> {typedef unsigned long type;};
template <> struct __make_unsigned<unsigned long, true> {typedef unsigned long type;};
template <> struct __make_unsigned< signed long long, true> {typedef unsigned long long type;};
template <> struct __make_unsigned<unsigned long long, true> {typedef unsigned long long type;};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __make_unsigned<__int128_t, true> {typedef __uint128_t type;};
template <> struct __make_unsigned<__uint128_t, true> {typedef __uint128_t type;};
#endif
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS make_unsigned
{
typedef typename __apply_cv<_Tp, typename __make_unsigned<typename remove_cv<_Tp>::type>::type>::type type;
};
#if _LIBCPP_STD_VER > 11
template <class _Tp> using make_unsigned_t = typename make_unsigned<_Tp>::type;
#endif
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI constexpr
typename make_unsigned<_Tp>::type __to_unsigned_like(_Tp __x) noexcept {
return static_cast<typename make_unsigned<_Tp>::type>(__x);
}
#endif
template <class _Tp, class _Up>
using __copy_unsigned_t = __conditional_t<is_unsigned<_Tp>::value, typename make_unsigned<_Up>::type, _Up>;
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_MAKE_UNSIGNED_H

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//===----------------------------------------------------------------------===//
//
// 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_NAT_H
#define _LIBCPP___TYPE_TRAITS_NAT_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
struct __nat
{
#ifndef _LIBCPP_CXX03_LANG
__nat() = delete;
__nat(const __nat&) = delete;
__nat& operator=(const __nat&) = delete;
~__nat() = delete;
#endif
};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_NAT_H

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//===----------------------------------------------------------------------===//
//
// 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_PROMOTE_H
#define _LIBCPP___TYPE_TRAITS_PROMOTE_H
#include <__config>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_same.h>
#include <__utility/declval.h>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp>
struct __numeric_type
{
static void __test(...);
static float __test(float);
static double __test(char);
static double __test(int);
static double __test(unsigned);
static double __test(long);
static double __test(unsigned long);
static double __test(long long);
static double __test(unsigned long long);
static double __test(double);
static long double __test(long double);
typedef decltype(__test(declval<_Tp>())) type;
static const bool value = _IsNotSame<type, void>::value;
};
template <>
struct __numeric_type<void>
{
static const bool value = true;
};
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> {};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_PROMOTE_H

41
libcxx/include/__type_traits/remove_cvref.h Normal file
View File

@ -0,0 +1,41 @@
//===----------------------------------------------------------------------===//
//
// 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_REMOVE_CVREF_H
#define _LIBCPP___TYPE_TRAITS_REMOVE_CVREF_H
#include <__config>
#include <__type_traits/is_same.h>
#include <__type_traits/remove_cv.h>
#include <__type_traits/remove_reference.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp>
using __uncvref_t _LIBCPP_NODEBUG = typename remove_cv<typename remove_reference<_Tp>::type>::type;
template <class _Tp, class _Up>
struct __is_same_uncvref : _IsSame<__uncvref_t<_Tp>, __uncvref_t<_Up> > {};
#if _LIBCPP_STD_VER > 17
// remove_cvref - same as __uncvref
template <class _Tp>
struct remove_cvref {
using type _LIBCPP_NODEBUG = __uncvref_t<_Tp>;
};
template <class _Tp> using remove_cvref_t = typename remove_cvref<_Tp>::type;
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_REMOVE_CVREF_H

44
libcxx/include/__type_traits/type_list.h Normal file
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@ -0,0 +1,44 @@
//===----------------------------------------------------------------------===//
//
// 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_TYPE_LIST_H
#define _LIBCPP___TYPE_TRAITS_TYPE_LIST_H
#include <__config>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Hp, class _Tp>
struct __type_list
{
typedef _Hp _Head;
typedef _Tp _Tail;
};
template <class _TypeList, size_t _Size, bool = _Size <= sizeof(typename _TypeList::_Head)> struct __find_first;
template <class _Hp, class _Tp, size_t _Size>
struct __find_first<__type_list<_Hp, _Tp>, _Size, true>
{
typedef _LIBCPP_NODEBUG _Hp type;
};
template <class _Hp, class _Tp, size_t _Size>
struct __find_first<__type_list<_Hp, _Tp>, _Size, false>
{
typedef _LIBCPP_NODEBUG typename __find_first<_Tp, _Size>::type type;
};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_TYPE_LIST_H

1
libcxx/include/charconv
View File

@ -88,6 +88,7 @@ namespace std {
#include <__config>
#include <__debug>
#include <__errc>
#include <__type_traits/make_32_64_or_128_bit.h>
#include <__utility/unreachable.h>
#include <cmath> // for log2f
#include <cstdint>

1
libcxx/include/math.h
View File

@ -305,6 +305,7 @@ long double truncl(long double x);
// back to C++ linkage before including these C++ headers.
extern "C++" {
#include <__type_traits/promote.h>
#include <limits>
#include <stdlib.h>
#include <type_traits>

19
libcxx/include/module.modulemap.in
View File

@ -1090,10 +1090,16 @@ module std [system] {
module add_pointer { private header "__type_traits/add_pointer.h" }
module add_rvalue_reference { private header "__type_traits/add_rvalue_reference.h" }
module add_volatile { private header "__type_traits/add_volatile.h" }
module aligned_storage { private header "__type_traits/aligned_storage.h" }
module aligned_union { private header "__type_traits/aligned_union.h" }
module alignment_of { private header "__type_traits/alignment_of.h" }
module apply_cv { private header "__type_traits/apply_cv.h" }
module common_reference { private header "__type_traits/common_reference.h" }
module common_type { private header "__type_traits/common_type.h" }
module conditional { private header "__type_traits/conditional.h" }
module conjunction { private header "__type_traits/conjunction.h" }
module copy_cv { private header "__type_traits/copy_cv.h" }
module copy_cvref { private header "__type_traits/copy_cvref.h" }
module decay { private header "__type_traits/decay.h" }
module disjunction { private header "__type_traits/disjunction.h" }
module enable_if { private header "__type_traits/enable_if.h" }
@ -1135,6 +1141,7 @@ module std [system] {
module is_move_constructible { private header "__type_traits/is_move_constructible.h" }
module is_nothrow_assignable { private header "__type_traits/is_nothrow_assignable.h" }
module is_nothrow_constructible { private header "__type_traits/is_nothrow_constructible.h" }
module is_nothrow_convertible { private header "__type_traits/is_nothrow_convertible.h" }
module is_nothrow_copy_assignable { private header "__type_traits/is_nothrow_copy_assignable.h" }
module is_nothrow_copy_constructible { private header "__type_traits/is_nothrow_copy_constructible.h" }
module is_nothrow_default_constructible { private header "__type_traits/is_nothrow_default_constructible.h" }
@ -1146,6 +1153,7 @@ module std [system] {
module is_pod { private header "__type_traits/is_pod.h" }
module is_pointer { private header "__type_traits/is_pointer.h" }
module is_polymorphic { private header "__type_traits/is_polymorphic.h" }
module is_primary_template { private header "__type_traits/is_primary_template.h" }
module is_reference { private header "__type_traits/is_reference.h" }
module is_reference_wrapper { private header "__type_traits/is_reference_wrapper.h" }
module is_referenceable { private header "__type_traits/is_referenceable.h" }
@ -1153,6 +1161,7 @@ module std [system] {
module is_scalar { private header "__type_traits/is_scalar.h" }
module is_scoped_enum { private header "__type_traits/is_scoped_enum.h" }
module is_signed { private header "__type_traits/is_signed.h" }
module is_signed_integer { private header "__type_traits/is_signed_integer.h" }
module is_standard_layout { private header "__type_traits/is_standard_layout.h" }
module is_trivial { private header "__type_traits/is_trivial.h" }
module is_trivially_assignable { private header "__type_traits/is_trivially_assignable.h" }
@ -1167,18 +1176,28 @@ module std [system] {
module is_unbounded_array { private header "__type_traits/is_unbounded_array.h" }
module is_union { private header "__type_traits/is_union.h" }
module is_unsigned { private header "__type_traits/is_unsigned.h" }
module is_unsigned_integer { private header "__type_traits/is_unsigned_integer.h" }
module is_valid_expansion { private header "__type_traits/is_valid_expansion.h" }
module is_void { private header "__type_traits/is_void.h" }
module is_volatile { private header "__type_traits/is_volatile.h" }
module lazy { private header "__type_traits/lazy.h" }
module make_32_64_or_128_bit { private header "__type_traits/make_32_64_or_128_bit.h" }
module make_signed { private header "__type_traits/make_signed.h" }
module make_unsigned { private header "__type_traits/make_unsigned.h" }
module nat { private header "__type_traits/nat.h" }
module negation { private header "__type_traits/negation.h" }
module promote { private header "__type_traits/promote.h" }
module rank { private header "__type_traits/rank.h" }
module remove_all_extents { private header "__type_traits/remove_all_extents.h" }
module remove_const { private header "__type_traits/remove_const.h" }
module remove_cv { private header "__type_traits/remove_cv.h" }
module remove_cvref { private header "__type_traits/remove_cvref.h" }
module remove_extent { private header "__type_traits/remove_extent.h" }
module remove_pointer { private header "__type_traits/remove_pointer.h" }
module remove_reference { private header "__type_traits/remove_reference.h" }
module remove_volatile { private header "__type_traits/remove_volatile.h" }
module type_identity { private header "__type_traits/type_identity.h" }
module type_list { private header "__type_traits/type_list.h" }
module underlying_type { private header "__type_traits/underlying_type.h" }
module void_t { private header "__type_traits/void_t.h" }
}

787
libcxx/include/type_traits
View File

@ -425,8 +425,12 @@ namespace std
#include <__type_traits/add_pointer.h>
#include <__type_traits/add_rvalue_reference.h>
#include <__type_traits/add_volatile.h>
#include <__type_traits/aligned_storage.h>
#include <__type_traits/aligned_union.h>
#include <__type_traits/alignment_of.h>
#include <__type_traits/apply_cv.h>
#include <__type_traits/common_reference.h>
#include <__type_traits/common_type.h>
#include <__type_traits/conditional.h>
#include <__type_traits/conjunction.h>
#include <__type_traits/decay.h>
@ -469,6 +473,7 @@ namespace std
#include <__type_traits/is_move_constructible.h>
#include <__type_traits/is_nothrow_assignable.h>
#include <__type_traits/is_nothrow_constructible.h>
#include <__type_traits/is_nothrow_convertible.h>
#include <__type_traits/is_nothrow_copy_assignable.h>
#include <__type_traits/is_nothrow_copy_constructible.h>
#include <__type_traits/is_nothrow_default_constructible.h>
@ -503,6 +508,8 @@ namespace std
#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/negation.h>
#include <__type_traits/rank.h>
#include <__type_traits/remove_all_extents.h>
@ -529,798 +536,18 @@ _LIBCPP_BEGIN_NAMESPACE_STD
template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS pair;
template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash;
template <template <class...> class _Func, class ..._Args>
struct _Lazy : _Func<_Args...> {};
// Member detector base
template <template <class...> class _Templ, class ..._Args, class = _Templ<_Args...> >
true_type __sfinae_test_impl(int);
template <template <class...> class, class ...>
false_type __sfinae_test_impl(...);
template <template <class ...> class _Templ, class ..._Args>
using _IsValidExpansion _LIBCPP_NODEBUG = decltype(__sfinae_test_impl<_Templ, _Args...>(0));
template <class _Tp, bool>
struct _LIBCPP_TEMPLATE_VIS __dependent_type : public _Tp {};
// is_same
template <class _Tp>
using __test_for_primary_template = __enable_if_t<
_IsSame<_Tp, typename _Tp::__primary_template>::value
>;
template <class _Tp>
using __is_primary_template = _IsValidExpansion<
__test_for_primary_template, _Tp
>;
// is_integral
// [basic.fundamental] defines five standard signed integer types;
// __int128_t is an extended signed integer type.
// The signed and unsigned integer types, plus bool and the
// five types with "char" in their name, compose the "integral" types.
template <class _Tp> struct __libcpp_is_signed_integer : public false_type {};
template <> struct __libcpp_is_signed_integer<signed char> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed short> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed int> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed long> : public true_type {};
template <> struct __libcpp_is_signed_integer<signed long long> : public true_type {};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __libcpp_is_signed_integer<__int128_t> : public true_type {};
#endif
template <class _Tp> struct __libcpp_is_unsigned_integer : public false_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned char> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned short> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned int> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned long> : public true_type {};
template <> struct __libcpp_is_unsigned_integer<unsigned long long> : public true_type {};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __libcpp_is_unsigned_integer<__uint128_t> : public true_type {};
#endif
template <class _Tp>
struct __unconstref {
typedef _LIBCPP_NODEBUG typename remove_const<typename remove_reference<_Tp>::type>::type type;
};
template <class _Tp>
using __uncvref_t _LIBCPP_NODEBUG = typename remove_cv<typename remove_reference<_Tp>::type>::type;
// __is_same_uncvref
template <class _Tp, class _Up>
struct __is_same_uncvref : _IsSame<__uncvref_t<_Tp>, __uncvref_t<_Up> > {};
#if _LIBCPP_STD_VER > 17
// remove_cvref - same as __uncvref
template <class _Tp>
struct remove_cvref {
using type _LIBCPP_NODEBUG = __uncvref_t<_Tp>;
};
template <class _Tp> using remove_cvref_t = typename remove_cvref<_Tp>::type;
#endif
// is_nothrow_convertible
#if _LIBCPP_STD_VER > 17
template <typename _Tp>
static void __test_noexcept(_Tp) noexcept;
template<typename _Fm, typename _To>
static bool_constant<noexcept(_VSTD::__test_noexcept<_To>(declval<_Fm>()))>
__is_nothrow_convertible_test();
template <typename _Fm, typename _To>
struct __is_nothrow_convertible_helper: decltype(__is_nothrow_convertible_test<_Fm, _To>())
{ };
template <typename _Fm, typename _To>
struct is_nothrow_convertible : _Or<
_And<is_void<_To>, is_void<_Fm>>,
_Lazy<_And, is_convertible<_Fm, _To>, __is_nothrow_convertible_helper<_Fm, _To>>
>::type { };
template <typename _Fm, typename _To>
inline constexpr bool is_nothrow_convertible_v = is_nothrow_convertible<_Fm, _To>::value;
#endif // _LIBCPP_STD_VER > 17
// aligned_storage
template <class _Hp, class _Tp>
struct __type_list
{
typedef _Hp _Head;
typedef _Tp _Tail;
};
template <class _Tp>
struct __align_type
{
static const size_t value = _LIBCPP_PREFERRED_ALIGNOF(_Tp);
typedef _Tp type;
};
struct __struct_double {long double __lx;};
struct __struct_double4 {double __lx[4];};
typedef
__type_list<__align_type<unsigned char>,
__type_list<__align_type<unsigned short>,
__type_list<__align_type<unsigned int>,
__type_list<__align_type<unsigned long>,
__type_list<__align_type<unsigned long long>,
__type_list<__align_type<double>,
__type_list<__align_type<long double>,
__type_list<__align_type<__struct_double>,
__type_list<__align_type<__struct_double4>,
__type_list<__align_type<int*>,
__nat
> > > > > > > > > > __all_types;
template <size_t _Align>
struct _ALIGNAS(_Align) __fallback_overaligned {};
template <class _TL, size_t _Align> struct __find_pod;
template <class _Hp, size_t _Align>
struct __find_pod<__type_list<_Hp, __nat>, _Align>
{
typedef typename conditional<
_Align == _Hp::value,
typename _Hp::type,
__fallback_overaligned<_Align>
>::type type;
};
template <class _Hp, class _Tp, size_t _Align>
struct __find_pod<__type_list<_Hp, _Tp>, _Align>
{
typedef typename conditional<
_Align == _Hp::value,
typename _Hp::type,
typename __find_pod<_Tp, _Align>::type
>::type type;
};
template <class _TL, size_t _Len> struct __find_max_align;
template <class _Hp, size_t _Len>
struct __find_max_align<__type_list<_Hp, __nat>, _Len> : public integral_constant<size_t, _Hp::value> {};
template <size_t _Len, size_t _A1, size_t _A2>
struct __select_align
{
private:
static const size_t __min = _A2 < _A1 ? _A2 : _A1;
static const size_t __max = _A1 < _A2 ? _A2 : _A1;
public:
static const size_t value = _Len < __max ? __min : __max;
};
template <class _Hp, class _Tp, size_t _Len>
struct __find_max_align<__type_list<_Hp, _Tp>, _Len>
: public integral_constant<size_t, __select_align<_Len, _Hp::value, __find_max_align<_Tp, _Len>::value>::value> {};
template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value>
struct _LIBCPP_TEMPLATE_VIS aligned_storage
{
typedef typename __find_pod<__all_types, _Align>::type _Aligner;
union type
{
_Aligner __align;
unsigned char __data[(_Len + _Align - 1)/_Align * _Align];
};
};
#if _LIBCPP_STD_VER > 11
template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value>
using aligned_storage_t = typename aligned_storage<_Len, _Align>::type;
#endif
#define _CREATE_ALIGNED_STORAGE_SPECIALIZATION(n) \
template <size_t _Len>\
struct _LIBCPP_TEMPLATE_VIS aligned_storage<_Len, n>\
{\
struct _ALIGNAS(n) type\
{\
unsigned char __lx[(_Len + n - 1)/n * n];\
};\
}
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x8);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x10);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x20);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x40);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x80);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x100);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x200);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x400);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x800);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1000);
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2000);
// PE/COFF does not support alignment beyond 8192 (=0x2000)
#if !defined(_LIBCPP_OBJECT_FORMAT_COFF)
_CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4000);
#endif // !defined(_LIBCPP_OBJECT_FORMAT_COFF)
#undef _CREATE_ALIGNED_STORAGE_SPECIALIZATION
// aligned_union
template <size_t _I0, size_t ..._In>
struct __static_max;
template <size_t _I0>
struct __static_max<_I0>
{
static const size_t value = _I0;
};
template <size_t _I0, size_t _I1, size_t ..._In>
struct __static_max<_I0, _I1, _In...>
{
static const size_t value = _I0 >= _I1 ? __static_max<_I0, _In...>::value :
__static_max<_I1, _In...>::value;
};
template <size_t _Len, class _Type0, class ..._Types>
struct aligned_union
{
static const size_t alignment_value = __static_max<_LIBCPP_PREFERRED_ALIGNOF(_Type0),
_LIBCPP_PREFERRED_ALIGNOF(_Types)...>::value;
static const size_t __len = __static_max<_Len, sizeof(_Type0),
sizeof(_Types)...>::value;
typedef typename aligned_storage<__len, alignment_value>::type type;
};
#if _LIBCPP_STD_VER > 11
template <size_t _Len, class ..._Types> using aligned_union_t = typename aligned_union<_Len, _Types...>::type;
#endif
template <class _Tp>
struct __numeric_type
{
static void __test(...);
static float __test(float);
static double __test(char);
static double __test(int);
static double __test(unsigned);
static double __test(long);
static double __test(unsigned long);
static double __test(long long);
static double __test(unsigned long long);
static double __test(double);
static long double __test(long double);
typedef decltype(__test(declval<_Tp>())) type;
static const bool value = _IsNotSame<type, void>::value;
};
template <>
struct __numeric_type<void>
{
static const bool value = true;
};
// __promote
template <class _A1, class _A2 = void, class _A3 = void,
bool = __numeric_type<_A1>::value &&
__numeric_type<_A2>::value &&
__numeric_type<_A3>::value>
class __promote_imp
{
public:
static const bool value = false;
};
template <class _A1, class _A2, class _A3>
class __promote_imp<_A1, _A2, _A3, true>
{
private:
typedef typename __promote_imp<_A1>::type __type1;
typedef typename __promote_imp<_A2>::type __type2;
typedef typename __promote_imp<_A3>::type __type3;
public:
typedef decltype(__type1() + __type2() + __type3()) type;
static const bool value = true;
};
template <class _A1, class _A2>
class __promote_imp<_A1, _A2, void, true>
{
private:
typedef typename __promote_imp<_A1>::type __type1;
typedef typename __promote_imp<_A2>::type __type2;
public:
typedef decltype(__type1() + __type2()) type;
static const bool value = true;
};
template <class _A1>
class __promote_imp<_A1, void, void, true>
{
public:
typedef typename __numeric_type<_A1>::type type;
static const bool value = true;
};
template <class _A1, class _A2 = void, class _A3 = void>
class __promote : public __promote_imp<_A1, _A2, _A3> {};
// make_signed / make_unsigned
typedef
__type_list<signed char,
__type_list<signed short,
__type_list<signed int,
__type_list<signed long,
__type_list<signed long long,
#ifndef _LIBCPP_HAS_NO_INT128
__type_list<__int128_t,
#endif
__nat
#ifndef _LIBCPP_HAS_NO_INT128
>
#endif
> > > > > __signed_types;
typedef
__type_list<unsigned char,
__type_list<unsigned short,
__type_list<unsigned int,
__type_list<unsigned long,
__type_list<unsigned long long,
#ifndef _LIBCPP_HAS_NO_INT128
__type_list<__uint128_t,
#endif
__nat
#ifndef _LIBCPP_HAS_NO_INT128
>
#endif
> > > > > __unsigned_types;
template <class _TypeList, size_t _Size, bool = _Size <= sizeof(typename _TypeList::_Head)> struct __find_first;
template <class _Hp, class _Tp, size_t _Size>
struct __find_first<__type_list<_Hp, _Tp>, _Size, true>
{
typedef _LIBCPP_NODEBUG _Hp type;
};
template <class _Hp, class _Tp, size_t _Size>
struct __find_first<__type_list<_Hp, _Tp>, _Size, false>
{
typedef _LIBCPP_NODEBUG typename __find_first<_Tp, _Size>::type type;
};
template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value>
struct __make_signed {};
template <class _Tp>
struct __make_signed<_Tp, true>
{
typedef typename __find_first<__signed_types, sizeof(_Tp)>::type type;
};
template <> struct __make_signed<bool, true> {};
template <> struct __make_signed< signed short, true> {typedef short type;};
template <> struct __make_signed<unsigned short, true> {typedef short type;};
template <> struct __make_signed< signed int, true> {typedef int type;};
template <> struct __make_signed<unsigned int, true> {typedef int type;};
template <> struct __make_signed< signed long, true> {typedef long type;};
template <> struct __make_signed<unsigned long, true> {typedef long type;};
template <> struct __make_signed< signed long long, true> {typedef long long type;};
template <> struct __make_signed<unsigned long long, true> {typedef long long type;};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __make_signed<__int128_t, true> {typedef __int128_t type;};
template <> struct __make_signed<__uint128_t, true> {typedef __int128_t type;};
#endif
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS make_signed
{
typedef typename __apply_cv<_Tp, typename __make_signed<typename remove_cv<_Tp>::type>::type>::type type;
};
#if _LIBCPP_STD_VER > 11
template <class _Tp> using make_signed_t = typename make_signed<_Tp>::type;
#endif
template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value>
struct __make_unsigned {};
template <class _Tp>
struct __make_unsigned<_Tp, true>
{
typedef typename __find_first<__unsigned_types, sizeof(_Tp)>::type type;
};
template <> struct __make_unsigned<bool, true> {};
template <> struct __make_unsigned< signed short, true> {typedef unsigned short type;};
template <> struct __make_unsigned<unsigned short, true> {typedef unsigned short type;};
template <> struct __make_unsigned< signed int, true> {typedef unsigned int type;};
template <> struct __make_unsigned<unsigned int, true> {typedef unsigned int type;};
template <> struct __make_unsigned< signed long, true> {typedef unsigned long type;};
template <> struct __make_unsigned<unsigned long, true> {typedef unsigned long type;};
template <> struct __make_unsigned< signed long long, true> {typedef unsigned long long type;};
template <> struct __make_unsigned<unsigned long long, true> {typedef unsigned long long type;};
#ifndef _LIBCPP_HAS_NO_INT128
template <> struct __make_unsigned<__int128_t, true> {typedef __uint128_t type;};
template <> struct __make_unsigned<__uint128_t, true> {typedef __uint128_t type;};
#endif
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS make_unsigned
{
typedef typename __apply_cv<_Tp, typename __make_unsigned<typename remove_cv<_Tp>::type>::type>::type type;
};
#if _LIBCPP_STD_VER > 11
template <class _Tp> using make_unsigned_t = typename make_unsigned<_Tp>::type;
#endif
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI constexpr
typename make_unsigned<_Tp>::type __to_unsigned_like(_Tp __x) noexcept {
return static_cast<typename make_unsigned<_Tp>::type>(__x);
}
#endif
template <class _Tp, class _Up>
using __copy_unsigned_t = __conditional_t<is_unsigned<_Tp>::value, typename make_unsigned<_Up>::type, _Up>;
/// Helper to promote an integral to smallest 32, 64, or 128 bit representation.
///
/// The restriction is the same as the integral version of to_char.
template <class _Tp>
#if _LIBCPP_STD_VER > 17
requires (is_signed_v<_Tp> || is_unsigned_v<_Tp> || is_same_v<_Tp, char>)
#endif
using __make_32_64_or_128_bit_t =
__copy_unsigned_t<_Tp,
__conditional_t<sizeof(_Tp) <= sizeof(int32_t), int32_t,
__conditional_t<sizeof(_Tp) <= sizeof(int64_t), int64_t,
#ifndef _LIBCPP_HAS_NO_INT128
__conditional_t<sizeof(_Tp) <= sizeof(__int128_t), __int128_t,
/* else */ void>
#else
/* else */ void
#endif
> >
>;
#if _LIBCPP_STD_VER > 17
// Let COND_RES(X, Y) be:
template <class _Tp, class _Up>
using __cond_type = decltype(false ? declval<_Tp>() : declval<_Up>());
template <class _Tp, class _Up, class = void>
struct __common_type3 {};
// sub-bullet 4 - "if COND_RES(CREF(D1), CREF(D2)) denotes a type..."
template <class _Tp, class _Up>
struct __common_type3<_Tp, _Up, void_t<__cond_type<const _Tp&, const _Up&>>>
{
using type = remove_cvref_t<__cond_type<const _Tp&, const _Up&>>;
};
template <class _Tp, class _Up, class = void>
struct __common_type2_imp : __common_type3<_Tp, _Up> {};
#else
template <class _Tp, class _Up, class = void>
struct __common_type2_imp {};
#endif
// sub-bullet 3 - "if decay_t<decltype(false ? declval<D1>() : declval<D2>())> ..."
template <class _Tp, class _Up>
struct __common_type2_imp<_Tp, _Up,
typename __void_t<decltype(
true ? declval<_Tp>() : declval<_Up>()
)>::type>
{
typedef _LIBCPP_NODEBUG typename decay<decltype(
true ? declval<_Tp>() : declval<_Up>()
)>::type type;
};
template <class, class = void>
struct __common_type_impl {};
// Clang provides variadic templates in C++03 as an extension.
#if !defined(_LIBCPP_CXX03_LANG) || defined(__clang__)
# define _LIBCPP_OPTIONAL_PACK(...) , __VA_ARGS__
template <class... _Tp>
struct __common_types;
template <class... _Tp>
struct _LIBCPP_TEMPLATE_VIS common_type;
#else
# define _LIBCPP_OPTIONAL_PACK(...)
struct __no_arg;
template <class _Tp, class _Up, class = __no_arg>
struct __common_types;
template <class _Tp = __no_arg, class _Up = __no_arg, class _Vp = __no_arg,
class _Unused = __no_arg>
struct common_type {
static_assert(sizeof(_Unused) == 0,
"common_type accepts at most 3 arguments in C++03");
};
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Up>
struct __common_type_impl<
__common_types<_Tp, _Up>,
typename __void_t<typename common_type<_Tp, _Up>::type>::type>
{
typedef typename common_type<_Tp, _Up>::type type;
};
template <class _Tp, class _Up, class _Vp _LIBCPP_OPTIONAL_PACK(class... _Rest)>
struct __common_type_impl<
__common_types<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)>,
typename __void_t<typename common_type<_Tp, _Up>::type>::type>
: __common_type_impl<__common_types<typename common_type<_Tp, _Up>::type,
_Vp _LIBCPP_OPTIONAL_PACK(_Rest...)> > {
};
// bullet 1 - sizeof...(Tp) == 0
template <>
struct _LIBCPP_TEMPLATE_VIS common_type<> {};
// bullet 2 - sizeof...(Tp) == 1
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS common_type<_Tp>
: public common_type<_Tp, _Tp> {};
// bullet 3 - sizeof...(Tp) == 2
// sub-bullet 1 - "If is_same_v<T1, D1> is false or ..."
template <class _Tp, class _Up>
struct _LIBCPP_TEMPLATE_VIS common_type<_Tp, _Up>
: conditional<
_IsSame<_Tp, typename decay<_Tp>::type>::value && _IsSame<_Up, typename decay<_Up>::type>::value,
__common_type2_imp<_Tp, _Up>,
common_type<typename decay<_Tp>::type, typename decay<_Up>::type>
>::type
{};
// bullet 4 - sizeof...(Tp) > 2
template <class _Tp, class _Up, class _Vp _LIBCPP_OPTIONAL_PACK(class... _Rest)>
struct _LIBCPP_TEMPLATE_VIS
common_type<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)>
: __common_type_impl<
__common_types<_Tp, _Up, _Vp _LIBCPP_OPTIONAL_PACK(_Rest...)> > {};
#undef _LIBCPP_OPTIONAL_PACK
#if _LIBCPP_STD_VER > 11
template <class ..._Tp> using common_type_t = typename common_type<_Tp...>::type;
#endif
// Let COPYCV(FROM, TO) be an alias for type TO with the addition of FROM's
// top-level cv-qualifiers.
template <class _From, class _To>
struct __copy_cv
{
using type = _To;
};
template <class _From, class _To>
struct __copy_cv<const _From, _To>
{
using type = typename add_const<_To>::type;
};
template <class _From, class _To>
struct __copy_cv<volatile _From, _To>
{
using type = typename add_volatile<_To>::type;
};
template <class _From, class _To>
struct __copy_cv<const volatile _From, _To>
{
using type = typename add_cv<_To>::type;
};
template <class _From, class _To>
using __copy_cv_t = typename __copy_cv<_From, _To>::type;
template <class _From, class _To>
struct __copy_cvref
{
using type = __copy_cv_t<_From, _To>;
};
template <class _From, class _To>
struct __copy_cvref<_From&, _To>
{
using type = typename add_lvalue_reference<__copy_cv_t<_From, _To> >::type;
};
template <class _From, class _To>
struct __copy_cvref<_From&&, _To>
{
using type = typename add_rvalue_reference<__copy_cv_t<_From, _To> >::type;
};
template <class _From, class _To>
using __copy_cvref_t = typename __copy_cvref<_From, _To>::type;
// common_reference
#if _LIBCPP_STD_VER > 17
// Let COND_RES(X, Y) be:
template <class _Xp, class _Yp>
using __cond_res =
decltype(false ? declval<_Xp(&)()>()() : declval<_Yp(&)()>()());
// Let `XREF(A)` denote a unary alias template `T` such that `T<U>` denotes the same type as `U`
// with the addition of `A`'s cv and reference qualifiers, for a non-reference cv-unqualified type
// `U`.
// [Note: `XREF(A)` is `__xref<A>::template __apply`]
template <class _Tp>
struct __xref {
template<class _Up>
using __apply = __copy_cvref_t<_Tp, _Up>;
};
// Given types A and B, let X be remove_reference_t<A>, let Y be remove_reference_t<B>,
// and let COMMON-REF(A, B) be:
template<class _Ap, class _Bp, class _Xp = remove_reference_t<_Ap>, class _Yp = remove_reference_t<_Bp>>
struct __common_ref;
template<class _Xp, class _Yp>
using __common_ref_t = typename __common_ref<_Xp, _Yp>::__type;
template<class _Xp, class _Yp>
using __cv_cond_res = __cond_res<__copy_cv_t<_Xp, _Yp>&, __copy_cv_t<_Yp, _Xp>&>;
// If A and B are both lvalue reference types, COMMON-REF(A, B) is
// COND-RES(COPYCV(X, Y)&, COPYCV(Y, X)&) if that type exists and is a reference type.
template<class _Ap, class _Bp, class _Xp, class _Yp>
requires requires { typename __cv_cond_res<_Xp, _Yp>; } && is_reference_v<__cv_cond_res<_Xp, _Yp>>
struct __common_ref<_Ap&, _Bp&, _Xp, _Yp>
{
using __type = __cv_cond_res<_Xp, _Yp>;
};
// Otherwise, let C be remove_reference_t<COMMON-REF(X&, Y&)>&&. ...
template <class _Xp, class _Yp>
using __common_ref_C = remove_reference_t<__common_ref_t<_Xp&, _Yp&>>&&;
// .... If A and B are both rvalue reference types, C is well-formed, and
// is_convertible_v<A, C> && is_convertible_v<B, C> is true, then COMMON-REF(A, B) is C.
template<class _Ap, class _Bp, class _Xp, class _Yp>
requires
requires { typename __common_ref_C<_Xp, _Yp>; } &&
is_convertible_v<_Ap&&, __common_ref_C<_Xp, _Yp>> &&
is_convertible_v<_Bp&&, __common_ref_C<_Xp, _Yp>>
struct __common_ref<_Ap&&, _Bp&&, _Xp, _Yp>
{
using __type = __common_ref_C<_Xp, _Yp>;
};
// Otherwise, let D be COMMON-REF(const X&, Y&). ...
template <class _Tp, class _Up>
using __common_ref_D = __common_ref_t<const _Tp&, _Up&>;
// ... If A is an rvalue reference and B is an lvalue reference and D is well-formed and
// is_convertible_v<A, D> is true, then COMMON-REF(A, B) is D.
template<class _Ap, class _Bp, class _Xp, class _Yp>
requires requires { typename __common_ref_D<_Xp, _Yp>; } &&
is_convertible_v<_Ap&&, __common_ref_D<_Xp, _Yp>>
struct __common_ref<_Ap&&, _Bp&, _Xp, _Yp>
{
using __type = __common_ref_D<_Xp, _Yp>;
};
// Otherwise, if A is an lvalue reference and B is an rvalue reference, then
// COMMON-REF(A, B) is COMMON-REF(B, A).
template<class _Ap, class _Bp, class _Xp, class _Yp>
struct __common_ref<_Ap&, _Bp&&, _Xp, _Yp> : __common_ref<_Bp&&, _Ap&> {};
// Otherwise, COMMON-REF(A, B) is ill-formed.
template<class _Ap, class _Bp, class _Xp, class _Yp>
struct __common_ref {};
// Note C: For the common_reference trait applied to a parameter pack [...]
template <class...>
struct common_reference;
template <class... _Types>
using common_reference_t = typename common_reference<_Types...>::type;
// bullet 1 - sizeof...(T) == 0
template<>
struct common_reference<> {};
// bullet 2 - sizeof...(T) == 1
template <class _Tp>
struct common_reference<_Tp>
{
using type = _Tp;
};
// bullet 3 - sizeof...(T) == 2
template <class _Tp, class _Up> struct __common_reference_sub_bullet3;
template <class _Tp, class _Up> struct __common_reference_sub_bullet2 : __common_reference_sub_bullet3<_Tp, _Up> {};
template <class _Tp, class _Up> struct __common_reference_sub_bullet1 : __common_reference_sub_bullet2<_Tp, _Up> {};
// sub-bullet 1 - If T1 and T2 are reference types and COMMON-REF(T1, T2) is well-formed, then
// the member typedef `type` denotes that type.
template <class _Tp, class _Up> struct common_reference<_Tp, _Up> : __common_reference_sub_bullet1<_Tp, _Up> {};
template <class _Tp, class _Up>
requires is_reference_v<_Tp> && is_reference_v<_Up> && requires { typename __common_ref_t<_Tp, _Up>; }
struct __common_reference_sub_bullet1<_Tp, _Up>
{
using type = __common_ref_t<_Tp, _Up>;
};
// sub-bullet 2 - Otherwise, if basic_common_reference<remove_cvref_t<T1>, remove_cvref_t<T2>, XREF(T1), XREF(T2)>::type
// is well-formed, then the member typedef `type` denotes that type.
template <class, class, template <class> class, template <class> class> struct basic_common_reference {};
template <class _Tp, class _Up>
using __basic_common_reference_t = typename basic_common_reference<
remove_cvref_t<_Tp>, remove_cvref_t<_Up>,
__xref<_Tp>::template __apply, __xref<_Up>::template __apply>::type;
template <class _Tp, class _Up>
requires requires { typename __basic_common_reference_t<_Tp, _Up>; }
struct __common_reference_sub_bullet2<_Tp, _Up>
{
using type = __basic_common_reference_t<_Tp, _Up>;
};
// sub-bullet 3 - Otherwise, if COND-RES(T1, T2) is well-formed,
// then the member typedef `type` denotes that type.
template <class _Tp, class _Up>
requires requires { typename __cond_res<_Tp, _Up>; }
struct __common_reference_sub_bullet3<_Tp, _Up>
{
using type = __cond_res<_Tp, _Up>;
};
// sub-bullet 4 & 5 - Otherwise, if common_type_t<T1, T2> is well-formed,
// then the member typedef `type` denotes that type.
// - Otherwise, there shall be no member `type`.
template <class _Tp, class _Up> struct __common_reference_sub_bullet3 : common_type<_Tp, _Up> {};
// bullet 4 - If there is such a type `C`, the member typedef type shall denote the same type, if
// any, as `common_reference_t<C, Rest...>`.
template <class _Tp, class _Up, class _Vp, class... _Rest>
requires requires { typename common_reference_t<_Tp, _Up>; }
struct common_reference<_Tp, _Up, _Vp, _Rest...>
: common_reference<common_reference_t<_Tp, _Up>, _Vp, _Rest...>
{};
// bullet 5 - Otherwise, there shall be no member `type`.
template <class...> struct common_reference {};
#endif // _LIBCPP_STD_VER > 17
#ifndef _LIBCPP_CXX03_LANG
// First of all, we can't implement this check in C++03 mode because the {}
// default initialization syntax isn't valid.

19
libcxx/test/libcxx/private_headers.verify.cpp
View File

@ -517,10 +517,16 @@ END-SCRIPT
#include <__type_traits/add_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_pointer.h'}}
#include <__type_traits/add_rvalue_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_rvalue_reference.h'}}
#include <__type_traits/add_volatile.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_volatile.h'}}
#include <__type_traits/aligned_storage.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/aligned_storage.h'}}
#include <__type_traits/aligned_union.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/aligned_union.h'}}
#include <__type_traits/alignment_of.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/alignment_of.h'}}
#include <__type_traits/apply_cv.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/apply_cv.h'}}
#include <__type_traits/common_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/common_reference.h'}}
#include <__type_traits/common_type.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/common_type.h'}}
#include <__type_traits/conditional.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/conditional.h'}}
#include <__type_traits/conjunction.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/conjunction.h'}}
#include <__type_traits/copy_cv.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/copy_cv.h'}}
#include <__type_traits/copy_cvref.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/copy_cvref.h'}}
#include <__type_traits/decay.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/decay.h'}}
#include <__type_traits/disjunction.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/disjunction.h'}}
#include <__type_traits/enable_if.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/enable_if.h'}}
@ -562,6 +568,7 @@ END-SCRIPT
#include <__type_traits/is_move_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_move_constructible.h'}}
#include <__type_traits/is_nothrow_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_assignable.h'}}
#include <__type_traits/is_nothrow_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_constructible.h'}}
#include <__type_traits/is_nothrow_convertible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_convertible.h'}}
#include <__type_traits/is_nothrow_copy_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_copy_assignable.h'}}
#include <__type_traits/is_nothrow_copy_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_copy_constructible.h'}}
#include <__type_traits/is_nothrow_default_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_default_constructible.h'}}
@ -573,6 +580,7 @@ END-SCRIPT
#include <__type_traits/is_pod.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_pod.h'}}
#include <__type_traits/is_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_pointer.h'}}
#include <__type_traits/is_polymorphic.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_polymorphic.h'}}
#include <__type_traits/is_primary_template.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_primary_template.h'}}
#include <__type_traits/is_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_reference.h'}}
#include <__type_traits/is_reference_wrapper.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_reference_wrapper.h'}}
#include <__type_traits/is_referenceable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_referenceable.h'}}
@ -580,6 +588,7 @@ END-SCRIPT
#include <__type_traits/is_scalar.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_scalar.h'}}
#include <__type_traits/is_scoped_enum.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_scoped_enum.h'}}
#include <__type_traits/is_signed.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_signed.h'}}
#include <__type_traits/is_signed_integer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_signed_integer.h'}}
#include <__type_traits/is_standard_layout.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_standard_layout.h'}}
#include <__type_traits/is_trivial.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivial.h'}}
#include <__type_traits/is_trivially_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_assignable.h'}}
@ -594,18 +603,28 @@ END-SCRIPT
#include <__type_traits/is_unbounded_array.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_unbounded_array.h'}}
#include <__type_traits/is_union.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_union.h'}}
#include <__type_traits/is_unsigned.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_unsigned.h'}}
#include <__type_traits/is_unsigned_integer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_unsigned_integer.h'}}
#include <__type_traits/is_valid_expansion.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_valid_expansion.h'}}
#include <__type_traits/is_void.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_void.h'}}
#include <__type_traits/is_volatile.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_volatile.h'}}
#include <__type_traits/lazy.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/lazy.h'}}
#include <__type_traits/make_32_64_or_128_bit.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/make_32_64_or_128_bit.h'}}
#include <__type_traits/make_signed.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/make_signed.h'}}
#include <__type_traits/make_unsigned.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/make_unsigned.h'}}
#include <__type_traits/nat.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/nat.h'}}
#include <__type_traits/negation.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/negation.h'}}
#include <__type_traits/promote.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/promote.h'}}
#include <__type_traits/rank.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/rank.h'}}
#include <__type_traits/remove_all_extents.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_all_extents.h'}}
#include <__type_traits/remove_const.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_const.h'}}
#include <__type_traits/remove_cv.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_cv.h'}}
#include <__type_traits/remove_cvref.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_cvref.h'}}
#include <__type_traits/remove_extent.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_extent.h'}}
#include <__type_traits/remove_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_pointer.h'}}
#include <__type_traits/remove_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_reference.h'}}
#include <__type_traits/remove_volatile.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_volatile.h'}}
#include <__type_traits/type_identity.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/type_identity.h'}}
#include <__type_traits/type_list.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/type_list.h'}}
#include <__type_traits/underlying_type.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/underlying_type.h'}}
#include <__type_traits/void_t.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/void_t.h'}}
#include <__utility/as_const.h> // expected-error@*:* {{use of private header from outside its module: '__utility/as_const.h'}}

6
libcxx/test/libcxx/utilities/meta/meta_base.pass.cpp
View File

@ -7,11 +7,13 @@
//===----------------------------------------------------------------------===//
//
#include "test_macros.h"
TEST_CLANG_DIAGNOSTIC_IGNORED("-Wprivate-header")
#include <__type_traits/is_valid_expansion.h>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
struct Bomb;
template <int N, class T = Bomb >
struct BOOM {