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[libc++] Untangles invoke.

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The type traits parts are moved to a type_traits detail header.
This was discovered while working on modules.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D150538
This commit is contained in:
Mark de Wever 2023-04-20 21:03:40 +02:00
parent 00c97cbc57
commit bea2ff6550
7 changed files with 542 additions and 511 deletions
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1
libcxx/include/CMakeLists.txt
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@ -691,6 +691,7 @@ set(files
__type_traits/has_unique_object_representation.h
__type_traits/has_virtual_destructor.h
__type_traits/integral_constant.h
__type_traits/invoke.h
__type_traits/is_abstract.h
__type_traits/is_aggregate.h
__type_traits/is_allocator.h

511
libcxx/include/__functional/invoke.h
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@ -11,526 +11,17 @@
#define _LIBCPP___FUNCTIONAL_INVOKE_H
#include <__config>
#include <__type_traits/add_lvalue_reference.h>
#include <__type_traits/apply_cv.h>
#include <__type_traits/conditional.h>
#include <__type_traits/decay.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_base_of.h>
#include <__type_traits/is_core_convertible.h>
#include <__type_traits/is_member_function_pointer.h>
#include <__type_traits/is_member_object_pointer.h>
#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 <__type_traits/invoke.h>
#include <__utility/forward.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
// TODO: Disentangle the type traits and std::invoke properly
_LIBCPP_BEGIN_NAMESPACE_STD
struct __any
{
__any(...);
};
template <class _MP, bool _IsMemberFunctionPtr, bool _IsMemberObjectPtr>
struct __member_pointer_traits_imp
{
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const, true, false>
{
typedef _Class const _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const, true, false>
{
typedef _Class const _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile, true, false>
{
typedef _Class volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile, true, false>
{
typedef _Class volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile, true, false>
{
typedef _Class const volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile, true, false>
{
typedef _Class const volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &, true, false>
{
typedef _Class& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &, true, false>
{
typedef _Class& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&, true, false>
{
typedef _Class const& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&, true, false>
{
typedef _Class const& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&, true, false>
{
typedef _Class volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&, true, false>
{
typedef _Class volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&, true, false>
{
typedef _Class const volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&, true, false>
{
typedef _Class const volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &&, true, false>
{
typedef _Class&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &&, true, false>
{
typedef _Class&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&&, true, false>
{
typedef _Class const&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&&, true, false>
{
typedef _Class const&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&&, true, false>
{
typedef _Class volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&&, true, false>
{
typedef _Class volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&&, true, false>
{
typedef _Class const volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&&, true, false>
{
typedef _Class const volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class>
struct __member_pointer_traits_imp<_Rp _Class::*, false, true>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
};
template <class _MP>
struct __member_pointer_traits
: public __member_pointer_traits_imp<__remove_cv_t<_MP>,
is_member_function_pointer<_MP>::value,
is_member_object_pointer<_MP>::value>
{
// typedef ... _ClassType;
// typedef ... _ReturnType;
// typedef ... _FnType;
};
template <class _DecayedFp>
struct __member_pointer_class_type {};
template <class _Ret, class _ClassType>
struct __member_pointer_class_type<_Ret _ClassType::*> {
typedef _ClassType type;
};
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet1 = typename enable_if
<
is_member_function_pointer<_DecayFp>::value
&& is_base_of<_ClassT, _DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0> >
using __enable_if_bullet2 = typename enable_if
<
is_member_function_pointer<_DecayFp>::value
&& __is_reference_wrapper<_DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet3 = typename enable_if
<
is_member_function_pointer<_DecayFp>::value
&& !is_base_of<_ClassT, _DecayA0>::value
&& !__is_reference_wrapper<_DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet4 = typename enable_if
<
is_member_object_pointer<_DecayFp>::value
&& is_base_of<_ClassT, _DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0> >
using __enable_if_bullet5 = typename enable_if
<
is_member_object_pointer<_DecayFp>::value
&& __is_reference_wrapper<_DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet6 = typename enable_if
<
is_member_object_pointer<_DecayFp>::value
&& !is_base_of<_ClassT, _DecayA0>::value
&& !__is_reference_wrapper<_DecayA0>::value
>::type;
// __invoke forward declarations
// fall back - none of the bullets
template <class ..._Args>
__nat __invoke(__any, _Args&& ...__args);
// bullets 1, 2 and 3
template <class _Fp, class _A0, class ..._Args,
class = __enable_if_bullet1<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype((std::declval<_A0>().*std::declval<_Fp>())(std::declval<_Args>()...))
__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
_NOEXCEPT_(noexcept((static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...)))
{ return (static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...); }
template <class _Fp, class _A0, class ..._Args,
class = __enable_if_bullet2<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype((std::declval<_A0>().get().*std::declval<_Fp>())(std::declval<_Args>()...))
__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
_NOEXCEPT_(noexcept((__a0.get().*__f)(static_cast<_Args&&>(__args)...)))
{ return (__a0.get().*__f)(static_cast<_Args&&>(__args)...); }
template <class _Fp, class _A0, class ..._Args,
class = __enable_if_bullet3<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(((*std::declval<_A0>()).*std::declval<_Fp>())(std::declval<_Args>()...))
__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
_NOEXCEPT_(noexcept(((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...)))
{ return ((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...); }
// bullets 4, 5 and 6
template <class _Fp, class _A0,
class = __enable_if_bullet4<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(std::declval<_A0>().*std::declval<_Fp>())
__invoke(_Fp&& __f, _A0&& __a0)
_NOEXCEPT_(noexcept(static_cast<_A0&&>(__a0).*__f))
{ return static_cast<_A0&&>(__a0).*__f; }
template <class _Fp, class _A0,
class = __enable_if_bullet5<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(std::declval<_A0>().get().*std::declval<_Fp>())
__invoke(_Fp&& __f, _A0&& __a0)
_NOEXCEPT_(noexcept(__a0.get().*__f))
{ return __a0.get().*__f; }
template <class _Fp, class _A0,
class = __enable_if_bullet6<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype((*std::declval<_A0>()).*std::declval<_Fp>())
__invoke(_Fp&& __f, _A0&& __a0)
_NOEXCEPT_(noexcept((*static_cast<_A0&&>(__a0)).*__f))
{ return (*static_cast<_A0&&>(__a0)).*__f; }
// bullet 7
template <class _Fp, class ..._Args>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(std::declval<_Fp>()(std::declval<_Args>()...))
__invoke(_Fp&& __f, _Args&& ...__args)
_NOEXCEPT_(noexcept(static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...)))
{ return static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...); }
// __invokable
template <class _Ret, class _Fp, class ..._Args>
struct __invokable_r
{
template <class _XFp, class ..._XArgs>
static decltype(std::__invoke(std::declval<_XFp>(), std::declval<_XArgs>()...)) __try_call(int);
template <class _XFp, class ..._XArgs>
static __nat __try_call(...);
// FIXME: Check that _Ret, _Fp, and _Args... are all complete types, cv void,
// or incomplete array types as required by the standard.
using _Result = decltype(__try_call<_Fp, _Args...>(0));
using type = __conditional_t<
_IsNotSame<_Result, __nat>::value,
__conditional_t<is_void<_Ret>::value, true_type, __is_core_convertible<_Result, _Ret> >,
false_type>;
static const bool value = type::value;
};
template <class _Fp, class ..._Args>
using __invokable = __invokable_r<void, _Fp, _Args...>;
template <bool _IsInvokable, bool _IsCVVoid, class _Ret, class _Fp, class ..._Args>
struct __nothrow_invokable_r_imp {
static const bool value = false;
};
template <class _Ret, class _Fp, class ..._Args>
struct __nothrow_invokable_r_imp<true, false, _Ret, _Fp, _Args...>
{
typedef __nothrow_invokable_r_imp _ThisT;
template <class _Tp>
static void __test_noexcept(_Tp) _NOEXCEPT;
#ifdef _LIBCPP_CXX03_LANG
static const bool value = false;
#else
static const bool value = noexcept(_ThisT::__test_noexcept<_Ret>(
_VSTD::__invoke(std::declval<_Fp>(), std::declval<_Args>()...)));
#endif
};
template <class _Ret, class _Fp, class ..._Args>
struct __nothrow_invokable_r_imp<true, true, _Ret, _Fp, _Args...>
{
#ifdef _LIBCPP_CXX03_LANG
static const bool value = false;
#else
static const bool value = noexcept(
_VSTD::__invoke(std::declval<_Fp>(), std::declval<_Args>()...));
#endif
};
template <class _Ret, class _Fp, class ..._Args>
using __nothrow_invokable_r =
__nothrow_invokable_r_imp<
__invokable_r<_Ret, _Fp, _Args...>::value,
is_void<_Ret>::value,
_Ret, _Fp, _Args...
>;
template <class _Fp, class ..._Args>
using __nothrow_invokable =
__nothrow_invokable_r_imp<
__invokable<_Fp, _Args...>::value,
true, void, _Fp, _Args...
>;
template <class _Fp, class ..._Args>
struct __invoke_of
: public enable_if<
__invokable<_Fp, _Args...>::value,
typename __invokable_r<void, _Fp, _Args...>::_Result>
{
};
template <class _Ret, bool = is_void<_Ret>::value>
struct __invoke_void_return_wrapper
{
template <class ..._Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 static _Ret __call(_Args&&... __args) {
return std::__invoke(std::forward<_Args>(__args)...);
}
};
template <class _Ret>
struct __invoke_void_return_wrapper<_Ret, true>
{
template <class ..._Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 static void __call(_Args&&... __args) {
std::__invoke(std::forward<_Args>(__args)...);
}
};
#if _LIBCPP_STD_VER >= 17
// is_invocable
template <class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_invocable
: integral_constant<bool, __invokable<_Fn, _Args...>::value> {};
template <class _Ret, class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_invocable_r
: integral_constant<bool, __invokable_r<_Ret, _Fn, _Args...>::value> {};
template <class _Fn, class ..._Args>
inline constexpr bool is_invocable_v = is_invocable<_Fn, _Args...>::value;
template <class _Ret, class _Fn, class ..._Args>
inline constexpr bool is_invocable_r_v = is_invocable_r<_Ret, _Fn, _Args...>::value;
// is_nothrow_invocable
template <class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable
: integral_constant<bool, __nothrow_invokable<_Fn, _Args...>::value> {};
template <class _Ret, class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable_r
: integral_constant<bool, __nothrow_invokable_r<_Ret, _Fn, _Args...>::value> {};
template <class _Fn, class ..._Args>
inline constexpr bool is_nothrow_invocable_v = is_nothrow_invocable<_Fn, _Args...>::value;
template <class _Ret, class _Fn, class ..._Args>
inline constexpr bool is_nothrow_invocable_r_v = is_nothrow_invocable_r<_Ret, _Fn, _Args...>::value;
template <class _Fn, class... _Args>
struct _LIBCPP_TEMPLATE_VIS invoke_result
: __invoke_of<_Fn, _Args...>
{
};
template <class _Fn, class... _Args>
using invoke_result_t = typename invoke_result<_Fn, _Args...>::type;
template <class _Fn, class ..._Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 invoke_result_t<_Fn, _Args...>
invoke(_Fn&& __f, _Args&&... __args)

536
libcxx/include/__type_traits/invoke.h Normal file
View File

@ -0,0 +1,536 @@
// -*- 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_INVOKE_H
#define _LIBCPP___TYPE_TRAITS_INVOKE_H
#include <__config>
#include <__type_traits/add_lvalue_reference.h>
#include <__type_traits/apply_cv.h>
#include <__type_traits/conditional.h>
#include <__type_traits/decay.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_base_of.h>
#include <__type_traits/is_core_convertible.h>
#include <__type_traits/is_member_function_pointer.h>
#include <__type_traits/is_member_object_pointer.h>
#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>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
struct __any
{
__any(...);
};
template <class _MP, bool _IsMemberFunctionPtr, bool _IsMemberObjectPtr>
struct __member_pointer_traits_imp
{
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...), true, false>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const, true, false>
{
typedef _Class const _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const, true, false>
{
typedef _Class const _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile, true, false>
{
typedef _Class volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile, true, false>
{
typedef _Class volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile, true, false>
{
typedef _Class const volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile, true, false>
{
typedef _Class const volatile _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &, true, false>
{
typedef _Class& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &, true, false>
{
typedef _Class& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&, true, false>
{
typedef _Class const& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&, true, false>
{
typedef _Class const& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&, true, false>
{
typedef _Class volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&, true, false>
{
typedef _Class volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&, true, false>
{
typedef _Class const volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&, true, false>
{
typedef _Class const volatile& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &&, true, false>
{
typedef _Class&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &&, true, false>
{
typedef _Class&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&&, true, false>
{
typedef _Class const&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&&, true, false>
{
typedef _Class const&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&&, true, false>
{
typedef _Class volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&&, true, false>
{
typedef _Class volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&&, true, false>
{
typedef _Class const volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param...);
};
template <class _Rp, class _Class, class ..._Param>
struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&&, true, false>
{
typedef _Class const volatile&& _ClassType;
typedef _Rp _ReturnType;
typedef _Rp (_FnType) (_Param..., ...);
};
template <class _Rp, class _Class>
struct __member_pointer_traits_imp<_Rp _Class::*, false, true>
{
typedef _Class _ClassType;
typedef _Rp _ReturnType;
};
template <class _MP>
struct __member_pointer_traits
: public __member_pointer_traits_imp<__remove_cv_t<_MP>,
is_member_function_pointer<_MP>::value,
is_member_object_pointer<_MP>::value>
{
// typedef ... _ClassType;
// typedef ... _ReturnType;
// typedef ... _FnType;
};
template <class _DecayedFp>
struct __member_pointer_class_type {};
template <class _Ret, class _ClassType>
struct __member_pointer_class_type<_Ret _ClassType::*> {
typedef _ClassType type;
};
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet1 = typename enable_if
<
is_member_function_pointer<_DecayFp>::value
&& is_base_of<_ClassT, _DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0> >
using __enable_if_bullet2 = typename enable_if
<
is_member_function_pointer<_DecayFp>::value
&& __is_reference_wrapper<_DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet3 = typename enable_if
<
is_member_function_pointer<_DecayFp>::value
&& !is_base_of<_ClassT, _DecayA0>::value
&& !__is_reference_wrapper<_DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet4 = typename enable_if
<
is_member_object_pointer<_DecayFp>::value
&& is_base_of<_ClassT, _DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0> >
using __enable_if_bullet5 = typename enable_if
<
is_member_object_pointer<_DecayFp>::value
&& __is_reference_wrapper<_DecayA0>::value
>::type;
template <class _Fp, class _A0,
class _DecayFp = __decay_t<_Fp>,
class _DecayA0 = __decay_t<_A0>,
class _ClassT = typename __member_pointer_class_type<_DecayFp>::type>
using __enable_if_bullet6 = typename enable_if
<
is_member_object_pointer<_DecayFp>::value
&& !is_base_of<_ClassT, _DecayA0>::value
&& !__is_reference_wrapper<_DecayA0>::value
>::type;
// __invoke forward declarations
// fall back - none of the bullets
template <class ..._Args>
__nat __invoke(__any, _Args&& ...__args);
// bullets 1, 2 and 3
template <class _Fp, class _A0, class ..._Args,
class = __enable_if_bullet1<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype((std::declval<_A0>().*std::declval<_Fp>())(std::declval<_Args>()...))
__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
_NOEXCEPT_(noexcept((static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...)))
{ return (static_cast<_A0&&>(__a0).*__f)(static_cast<_Args&&>(__args)...); }
template <class _Fp, class _A0, class ..._Args,
class = __enable_if_bullet2<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype((std::declval<_A0>().get().*std::declval<_Fp>())(std::declval<_Args>()...))
__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
_NOEXCEPT_(noexcept((__a0.get().*__f)(static_cast<_Args&&>(__args)...)))
{ return (__a0.get().*__f)(static_cast<_Args&&>(__args)...); }
template <class _Fp, class _A0, class ..._Args,
class = __enable_if_bullet3<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(((*std::declval<_A0>()).*std::declval<_Fp>())(std::declval<_Args>()...))
__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
_NOEXCEPT_(noexcept(((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...)))
{ return ((*static_cast<_A0&&>(__a0)).*__f)(static_cast<_Args&&>(__args)...); }
// bullets 4, 5 and 6
template <class _Fp, class _A0,
class = __enable_if_bullet4<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(std::declval<_A0>().*std::declval<_Fp>())
__invoke(_Fp&& __f, _A0&& __a0)
_NOEXCEPT_(noexcept(static_cast<_A0&&>(__a0).*__f))
{ return static_cast<_A0&&>(__a0).*__f; }
template <class _Fp, class _A0,
class = __enable_if_bullet5<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(std::declval<_A0>().get().*std::declval<_Fp>())
__invoke(_Fp&& __f, _A0&& __a0)
_NOEXCEPT_(noexcept(__a0.get().*__f))
{ return __a0.get().*__f; }
template <class _Fp, class _A0,
class = __enable_if_bullet6<_Fp, _A0> >
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype((*std::declval<_A0>()).*std::declval<_Fp>())
__invoke(_Fp&& __f, _A0&& __a0)
_NOEXCEPT_(noexcept((*static_cast<_A0&&>(__a0)).*__f))
{ return (*static_cast<_A0&&>(__a0)).*__f; }
// bullet 7
template <class _Fp, class ..._Args>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR decltype(std::declval<_Fp>()(std::declval<_Args>()...))
__invoke(_Fp&& __f, _Args&& ...__args)
_NOEXCEPT_(noexcept(static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...)))
{ return static_cast<_Fp&&>(__f)(static_cast<_Args&&>(__args)...); }
// __invokable
template <class _Ret, class _Fp, class ..._Args>
struct __invokable_r
{
template <class _XFp, class ..._XArgs>
static decltype(std::__invoke(std::declval<_XFp>(), std::declval<_XArgs>()...)) __try_call(int);
template <class _XFp, class ..._XArgs>
static __nat __try_call(...);
// FIXME: Check that _Ret, _Fp, and _Args... are all complete types, cv void,
// or incomplete array types as required by the standard.
using _Result = decltype(__try_call<_Fp, _Args...>(0));
using type = __conditional_t<
_IsNotSame<_Result, __nat>::value,
__conditional_t<is_void<_Ret>::value, true_type, __is_core_convertible<_Result, _Ret> >,
false_type>;
static const bool value = type::value;
};
template <class _Fp, class ..._Args>
using __invokable = __invokable_r<void, _Fp, _Args...>;
template <bool _IsInvokable, bool _IsCVVoid, class _Ret, class _Fp, class ..._Args>
struct __nothrow_invokable_r_imp {
static const bool value = false;
};
template <class _Ret, class _Fp, class ..._Args>
struct __nothrow_invokable_r_imp<true, false, _Ret, _Fp, _Args...>
{
typedef __nothrow_invokable_r_imp _ThisT;
template <class _Tp>
static void __test_noexcept(_Tp) _NOEXCEPT;
#ifdef _LIBCPP_CXX03_LANG
static const bool value = false;
#else
static const bool value = noexcept(_ThisT::__test_noexcept<_Ret>(
_VSTD::__invoke(std::declval<_Fp>(), std::declval<_Args>()...)));
#endif
};
template <class _Ret, class _Fp, class ..._Args>
struct __nothrow_invokable_r_imp<true, true, _Ret, _Fp, _Args...>
{
#ifdef _LIBCPP_CXX03_LANG
static const bool value = false;
#else
static const bool value = noexcept(
_VSTD::__invoke(std::declval<_Fp>(), std::declval<_Args>()...));
#endif
};
template <class _Ret, class _Fp, class ..._Args>
using __nothrow_invokable_r =
__nothrow_invokable_r_imp<
__invokable_r<_Ret, _Fp, _Args...>::value,
is_void<_Ret>::value,
_Ret, _Fp, _Args...
>;
template <class _Fp, class ..._Args>
using __nothrow_invokable =
__nothrow_invokable_r_imp<
__invokable<_Fp, _Args...>::value,
true, void, _Fp, _Args...
>;
template <class _Fp, class ..._Args>
struct __invoke_of
: public enable_if<
__invokable<_Fp, _Args...>::value,
typename __invokable_r<void, _Fp, _Args...>::_Result>
{
};
template <class _Ret, bool = is_void<_Ret>::value>
struct __invoke_void_return_wrapper
{
template <class ..._Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 static _Ret __call(_Args&&... __args) {
return std::__invoke(std::forward<_Args>(__args)...);
}
};
template <class _Ret>
struct __invoke_void_return_wrapper<_Ret, true>
{
template <class ..._Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 static void __call(_Args&&... __args) {
std::__invoke(std::forward<_Args>(__args)...);
}
};
#if _LIBCPP_STD_VER >= 17
// is_invocable
template <class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_invocable
: integral_constant<bool, __invokable<_Fn, _Args...>::value> {};
template <class _Ret, class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_invocable_r
: integral_constant<bool, __invokable_r<_Ret, _Fn, _Args...>::value> {};
template <class _Fn, class ..._Args>
inline constexpr bool is_invocable_v = is_invocable<_Fn, _Args...>::value;
template <class _Ret, class _Fn, class ..._Args>
inline constexpr bool is_invocable_r_v = is_invocable_r<_Ret, _Fn, _Args...>::value;
// is_nothrow_invocable
template <class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable
: integral_constant<bool, __nothrow_invokable<_Fn, _Args...>::value> {};
template <class _Ret, class _Fn, class ..._Args>
struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable_r
: integral_constant<bool, __nothrow_invokable_r<_Ret, _Fn, _Args...>::value> {};
template <class _Fn, class ..._Args>
inline constexpr bool is_nothrow_invocable_v = is_nothrow_invocable<_Fn, _Args...>::value;
template <class _Ret, class _Fn, class ..._Args>
inline constexpr bool is_nothrow_invocable_r_v = is_nothrow_invocable_r<_Ret, _Fn, _Args...>::value;
template <class _Fn, class... _Args>
struct _LIBCPP_TEMPLATE_VIS invoke_result
: __invoke_of<_Fn, _Args...>
{
};
template <class _Fn, class... _Args>
using invoke_result_t = typename invoke_result<_Fn, _Args...>::type;
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_INVOKE_H

1
libcxx/include/module.modulemap.in
View File

@ -1559,6 +1559,7 @@ module std [system] {
module has_unique_object_representation { private header "__type_traits/has_unique_object_representation.h" }
module has_virtual_destructor { private header "__type_traits/has_virtual_destructor.h" }
module integral_constant { private header "__type_traits/integral_constant.h" }
module invoke { private header "__type_traits/invoke.h" }
module is_abstract { private header "__type_traits/is_abstract.h" }
module is_aggregate { private header "__type_traits/is_aggregate.h" }
module is_allocator { private header "__type_traits/is_allocator.h" }

2
libcxx/include/type_traits
View File

@ -418,7 +418,6 @@ namespace std
*/
#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
#include <__functional/invoke.h>
#include <__fwd/hash.h> // This is https://llvm.org/PR56938
#include <__type_traits/add_const.h>
#include <__type_traits/add_cv.h>
@ -443,6 +442,7 @@ namespace std
#include <__type_traits/has_unique_object_representation.h>
#include <__type_traits/has_virtual_destructor.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/invoke.h>
#include <__type_traits/is_abstract.h>
#include <__type_traits/is_aggregate.h>
#include <__type_traits/is_arithmetic.h>

1
libcxx/test/libcxx/private_headers.verify.cpp
View File

@ -673,6 +673,7 @@ END-SCRIPT
#include <__type_traits/has_unique_object_representation.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/has_unique_object_representation.h'}}
#include <__type_traits/has_virtual_destructor.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/has_virtual_destructor.h'}}
#include <__type_traits/integral_constant.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/integral_constant.h'}}
#include <__type_traits/invoke.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/invoke.h'}}
#include <__type_traits/is_abstract.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_abstract.h'}}
#include <__type_traits/is_aggregate.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_aggregate.h'}}
#include <__type_traits/is_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_allocator.h'}}

1
libcxx/utils/data/ignore_format.txt
View File

@ -658,6 +658,7 @@ libcxx/include/__type_traits/extent.h
libcxx/include/__type_traits/has_unique_object_representation.h
libcxx/include/__type_traits/has_virtual_destructor.h
libcxx/include/__type_traits/integral_constant.h
libcxx/include/__type_traits/invoke.h
libcxx/include/__type_traits/is_abstract.h
libcxx/include/__type_traits/is_aggregate.h
libcxx/include/__type_traits/is_allocator.h