mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-10 03:54:48 +00:00
1902 lines
52 KiB
Plaintext
1902 lines
52 KiB
Plaintext
|
// C++0x type_traits -*- C++ -*-
|
||
|
|
||
|
// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
|
||
|
//
|
||
|
// This file is part of the GNU ISO C++ Library. This library is free
|
||
|
// software; you can redistribute it and/or modify it under the
|
||
|
// terms of the GNU General Public License as published by the
|
||
|
// Free Software Foundation; either version 3, or (at your option)
|
||
|
// any later version.
|
||
|
|
||
|
// This library is distributed in the hope that it will be useful,
|
||
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
// GNU General Public License for more details.
|
||
|
|
||
|
// Under Section 7 of GPL version 3, you are granted additional
|
||
|
// permissions described in the GCC Runtime Library Exception, version
|
||
|
// 3.1, as published by the Free Software Foundation.
|
||
|
|
||
|
// You should have received a copy of the GNU General Public License and
|
||
|
// a copy of the GCC Runtime Library Exception along with this program;
|
||
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
||
|
// <http://www.gnu.org/licenses/>.
|
||
|
|
||
|
// ????????????????????????????????????????????????????????????????????
|
||
|
//
|
||
|
// This is a copy of the libstdc++ header, with the trivial modification
|
||
|
// of ignoring the c++config.h include. If and when the top-level build is
|
||
|
// fixed so that target libraries can be built using the newly built, we can
|
||
|
// delete this file.
|
||
|
//
|
||
|
// ????????????????????????????????????????????????????????????????????
|
||
|
|
||
|
/** @file include/type_traits
|
||
|
* This is a Standard C++ Library header.
|
||
|
*/
|
||
|
|
||
|
#ifndef _GLIBCXX_TYPE_TRAITS
|
||
|
#define _GLIBCXX_TYPE_TRAITS 1
|
||
|
|
||
|
// #pragma GCC system_header
|
||
|
|
||
|
// #ifndef __GXX_EXPERIMENTAL_CXX0X__
|
||
|
// # include <bits/c++0x_warning.h>
|
||
|
// #else
|
||
|
// #include <bits/c++config.h>
|
||
|
|
||
|
namespace std // _GLIBCXX_VISIBILITY(default)
|
||
|
{
|
||
|
// _GLIBCXX_BEGIN_NAMESPACE_VERSION
|
||
|
|
||
|
/**
|
||
|
* @addtogroup metaprogramming
|
||
|
* @{
|
||
|
*/
|
||
|
|
||
|
/// integral_constant
|
||
|
template<typename _Tp, _Tp __v>
|
||
|
struct integral_constant
|
||
|
{
|
||
|
static constexpr _Tp value = __v;
|
||
|
typedef _Tp value_type;
|
||
|
typedef integral_constant<_Tp, __v> type;
|
||
|
constexpr operator value_type() { return value; }
|
||
|
};
|
||
|
|
||
|
/// typedef for true_type
|
||
|
typedef integral_constant<bool, true> true_type;
|
||
|
|
||
|
/// typedef for false_type
|
||
|
typedef integral_constant<bool, false> false_type;
|
||
|
|
||
|
template<typename _Tp, _Tp __v>
|
||
|
constexpr _Tp integral_constant<_Tp, __v>::value;
|
||
|
|
||
|
// Meta programming helper types.
|
||
|
|
||
|
template<bool, typename, typename>
|
||
|
struct conditional;
|
||
|
|
||
|
template<typename...>
|
||
|
struct __or_;
|
||
|
|
||
|
template<>
|
||
|
struct __or_<>
|
||
|
: public false_type
|
||
|
{ };
|
||
|
|
||
|
template<typename _B1>
|
||
|
struct __or_<_B1>
|
||
|
: public _B1
|
||
|
{ };
|
||
|
|
||
|
template<typename _B1, typename _B2>
|
||
|
struct __or_<_B1, _B2>
|
||
|
: public conditional<_B1::value, _B1, _B2>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _B1, typename _B2, typename _B3, typename... _Bn>
|
||
|
struct __or_<_B1, _B2, _B3, _Bn...>
|
||
|
: public conditional<_B1::value, _B1, __or_<_B2, _B3, _Bn...>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename...>
|
||
|
struct __and_;
|
||
|
|
||
|
template<>
|
||
|
struct __and_<>
|
||
|
: public true_type
|
||
|
{ };
|
||
|
|
||
|
template<typename _B1>
|
||
|
struct __and_<_B1>
|
||
|
: public _B1
|
||
|
{ };
|
||
|
|
||
|
template<typename _B1, typename _B2>
|
||
|
struct __and_<_B1, _B2>
|
||
|
: public conditional<_B1::value, _B2, _B1>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _B1, typename _B2, typename _B3, typename... _Bn>
|
||
|
struct __and_<_B1, _B2, _B3, _Bn...>
|
||
|
: public conditional<_B1::value, __and_<_B2, _B3, _Bn...>, _B1>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Pp>
|
||
|
struct __not_
|
||
|
: public integral_constant<bool, !_Pp::value>
|
||
|
{ };
|
||
|
|
||
|
struct __sfinae_types
|
||
|
{
|
||
|
typedef char __one;
|
||
|
typedef struct { char __arr[2]; } __two;
|
||
|
};
|
||
|
|
||
|
// primary type categories.
|
||
|
|
||
|
template<typename>
|
||
|
struct remove_cv;
|
||
|
|
||
|
template<typename>
|
||
|
struct __is_void_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_void_helper<void>
|
||
|
: public true_type { };
|
||
|
|
||
|
/// is_void
|
||
|
template<typename _Tp>
|
||
|
struct is_void
|
||
|
: public integral_constant<bool, (__is_void_helper<typename
|
||
|
remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
template<typename>
|
||
|
struct __is_integral_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<bool>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<char>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<signed char>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<unsigned char>
|
||
|
: public true_type { };
|
||
|
|
||
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
||
|
template<>
|
||
|
struct __is_integral_helper<wchar_t>
|
||
|
: public true_type { };
|
||
|
#endif
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<char16_t>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<char32_t>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<short>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<unsigned short>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<int>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<unsigned int>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<long>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<unsigned long>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<long long>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<unsigned long long>
|
||
|
: public true_type { };
|
||
|
|
||
|
#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128)
|
||
|
template<>
|
||
|
struct __is_integral_helper<__int128>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_integral_helper<unsigned __int128>
|
||
|
: public true_type { };
|
||
|
#endif
|
||
|
|
||
|
/// is_integral
|
||
|
template<typename _Tp>
|
||
|
struct is_integral
|
||
|
: public integral_constant<bool, (__is_integral_helper<typename
|
||
|
remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
template<typename>
|
||
|
struct __is_floating_point_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_floating_point_helper<float>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_floating_point_helper<double>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<>
|
||
|
struct __is_floating_point_helper<long double>
|
||
|
: public true_type { };
|
||
|
|
||
|
#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128)
|
||
|
template<>
|
||
|
struct __is_floating_point_helper<__float128>
|
||
|
: public true_type { };
|
||
|
#endif
|
||
|
|
||
|
/// is_floating_point
|
||
|
template<typename _Tp>
|
||
|
struct is_floating_point
|
||
|
: public integral_constant<bool, (__is_floating_point_helper<typename
|
||
|
remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
/// is_array
|
||
|
template<typename>
|
||
|
struct is_array
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp, size_t _Size>
|
||
|
struct is_array<_Tp[_Size]>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct is_array<_Tp[]>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename>
|
||
|
struct __is_pointer_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_pointer_helper<_Tp*>
|
||
|
: public true_type { };
|
||
|
|
||
|
/// is_pointer
|
||
|
template<typename _Tp>
|
||
|
struct is_pointer
|
||
|
: public integral_constant<bool, (__is_pointer_helper<typename
|
||
|
remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
/// is_lvalue_reference
|
||
|
template<typename>
|
||
|
struct is_lvalue_reference
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct is_lvalue_reference<_Tp&>
|
||
|
: public true_type { };
|
||
|
|
||
|
/// is_rvalue_reference
|
||
|
template<typename>
|
||
|
struct is_rvalue_reference
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct is_rvalue_reference<_Tp&&>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename>
|
||
|
struct is_function;
|
||
|
|
||
|
template<typename>
|
||
|
struct __is_member_object_pointer_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp, typename _Cp>
|
||
|
struct __is_member_object_pointer_helper<_Tp _Cp::*>
|
||
|
: public integral_constant<bool, !is_function<_Tp>::value> { };
|
||
|
|
||
|
/// is_member_object_pointer
|
||
|
template<typename _Tp>
|
||
|
struct is_member_object_pointer
|
||
|
: public integral_constant<bool, (__is_member_object_pointer_helper<
|
||
|
typename remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
template<typename>
|
||
|
struct __is_member_function_pointer_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp, typename _Cp>
|
||
|
struct __is_member_function_pointer_helper<_Tp _Cp::*>
|
||
|
: public integral_constant<bool, is_function<_Tp>::value> { };
|
||
|
|
||
|
/// is_member_function_pointer
|
||
|
template<typename _Tp>
|
||
|
struct is_member_function_pointer
|
||
|
: public integral_constant<bool, (__is_member_function_pointer_helper<
|
||
|
typename remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
/// is_enum
|
||
|
template<typename _Tp>
|
||
|
struct is_enum
|
||
|
: public integral_constant<bool, __is_enum(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_union
|
||
|
template<typename _Tp>
|
||
|
struct is_union
|
||
|
: public integral_constant<bool, __is_union(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_class
|
||
|
template<typename _Tp>
|
||
|
struct is_class
|
||
|
: public integral_constant<bool, __is_class(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_function
|
||
|
template<typename>
|
||
|
struct is_function
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes...)>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes......)>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes...) const>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes......) const>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes...) volatile>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes......) volatile>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes...) const volatile>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Res, typename... _ArgTypes>
|
||
|
struct is_function<_Res(_ArgTypes......) const volatile>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename>
|
||
|
struct __is_nullptr_t_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
#if 0
|
||
|
template<>
|
||
|
struct __is_nullptr_t_helper<nullptr_t>
|
||
|
: public true_type { };
|
||
|
#endif
|
||
|
|
||
|
// __is_nullptr_t (extension).
|
||
|
template<typename _Tp>
|
||
|
struct __is_nullptr_t
|
||
|
: public integral_constant<bool, (__is_nullptr_t_helper<typename
|
||
|
remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
// composite type categories.
|
||
|
|
||
|
/// is_reference
|
||
|
template<typename _Tp>
|
||
|
struct is_reference
|
||
|
: public __or_<is_lvalue_reference<_Tp>,
|
||
|
is_rvalue_reference<_Tp>>::type
|
||
|
{ };
|
||
|
|
||
|
/// is_arithmetic
|
||
|
template<typename _Tp>
|
||
|
struct is_arithmetic
|
||
|
: public __or_<is_integral<_Tp>, is_floating_point<_Tp>>::type
|
||
|
{ };
|
||
|
|
||
|
/// is_fundamental
|
||
|
template<typename _Tp>
|
||
|
struct is_fundamental
|
||
|
: public __or_<is_arithmetic<_Tp>, is_void<_Tp>>::type
|
||
|
{ };
|
||
|
|
||
|
/// is_object
|
||
|
template<typename _Tp>
|
||
|
struct is_object
|
||
|
: public __not_<__or_<is_function<_Tp>, is_reference<_Tp>,
|
||
|
is_void<_Tp>>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename>
|
||
|
struct is_member_pointer;
|
||
|
|
||
|
/// is_scalar
|
||
|
template<typename _Tp>
|
||
|
struct is_scalar
|
||
|
: public __or_<is_arithmetic<_Tp>, is_enum<_Tp>, is_pointer<_Tp>,
|
||
|
is_member_pointer<_Tp>, __is_nullptr_t<_Tp>>::type
|
||
|
{ };
|
||
|
|
||
|
/// is_compound
|
||
|
template<typename _Tp>
|
||
|
struct is_compound
|
||
|
: public integral_constant<bool, !is_fundamental<_Tp>::value> { };
|
||
|
|
||
|
/// is_member_pointer
|
||
|
template<typename _Tp>
|
||
|
struct __is_member_pointer_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp, typename _Cp>
|
||
|
struct __is_member_pointer_helper<_Tp _Cp::*>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct is_member_pointer
|
||
|
: public integral_constant<bool, (__is_member_pointer_helper<
|
||
|
typename remove_cv<_Tp>::type>::value)>
|
||
|
{ };
|
||
|
|
||
|
// type properties.
|
||
|
|
||
|
/// is_const
|
||
|
template<typename>
|
||
|
struct is_const
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct is_const<_Tp const>
|
||
|
: public true_type { };
|
||
|
|
||
|
/// is_volatile
|
||
|
template<typename>
|
||
|
struct is_volatile
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct is_volatile<_Tp volatile>
|
||
|
: public true_type { };
|
||
|
|
||
|
/// is_trivial
|
||
|
template<typename _Tp>
|
||
|
struct is_trivial
|
||
|
: public integral_constant<bool, __is_trivial(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_trivially_copyable (still unimplemented)
|
||
|
|
||
|
/// is_standard_layout
|
||
|
template<typename _Tp>
|
||
|
struct is_standard_layout
|
||
|
: public integral_constant<bool, __is_standard_layout(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_pod
|
||
|
// Could use is_standard_layout && is_trivial instead of the builtin.
|
||
|
template<typename _Tp>
|
||
|
struct is_pod
|
||
|
: public integral_constant<bool, __is_pod(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_literal_type
|
||
|
template<typename _Tp>
|
||
|
struct is_literal_type
|
||
|
: public integral_constant<bool, __is_literal_type(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_empty
|
||
|
template<typename _Tp>
|
||
|
struct is_empty
|
||
|
: public integral_constant<bool, __is_empty(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_polymorphic
|
||
|
template<typename _Tp>
|
||
|
struct is_polymorphic
|
||
|
: public integral_constant<bool, __is_polymorphic(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// is_abstract
|
||
|
template<typename _Tp>
|
||
|
struct is_abstract
|
||
|
: public integral_constant<bool, __is_abstract(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp,
|
||
|
bool = is_integral<_Tp>::value,
|
||
|
bool = is_floating_point<_Tp>::value>
|
||
|
struct __is_signed_helper
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_signed_helper<_Tp, false, true>
|
||
|
: public true_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_signed_helper<_Tp, true, false>
|
||
|
: public integral_constant<bool, static_cast<bool>(_Tp(-1) < _Tp(0))>
|
||
|
{ };
|
||
|
|
||
|
/// is_signed
|
||
|
template<typename _Tp>
|
||
|
struct is_signed
|
||
|
: public integral_constant<bool, __is_signed_helper<_Tp>::value>
|
||
|
{ };
|
||
|
|
||
|
/// is_unsigned
|
||
|
template<typename _Tp>
|
||
|
struct is_unsigned
|
||
|
: public __and_<is_arithmetic<_Tp>, __not_<is_signed<_Tp>>>::type
|
||
|
{ };
|
||
|
|
||
|
|
||
|
// destructible and constructible type properties
|
||
|
|
||
|
template<typename>
|
||
|
struct add_rvalue_reference;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
typename add_rvalue_reference<_Tp>::type declval() noexcept;
|
||
|
|
||
|
template<typename, unsigned = 0>
|
||
|
struct extent;
|
||
|
|
||
|
template<typename>
|
||
|
struct remove_all_extents;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_array_known_bounds
|
||
|
: public integral_constant<bool, (extent<_Tp>::value > 0)>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_array_unknown_bounds
|
||
|
: public __and_<is_array<_Tp>, __not_<extent<_Tp>>>::type
|
||
|
{ };
|
||
|
|
||
|
// In N3290 is_destructible does not say anything about function
|
||
|
// types and abstract types, see LWG 2049. This implementation
|
||
|
// describes function types as trivially nothrow destructible and
|
||
|
// abstract types as destructible, iff the explicit destructor
|
||
|
// call expression is wellformed.
|
||
|
struct __do_is_destructible_impl_1
|
||
|
{
|
||
|
template<typename _Up>
|
||
|
struct __w { _Up __u; };
|
||
|
|
||
|
template<typename _Tp, typename
|
||
|
= decltype(declval<__w<_Tp>&>().~__w<_Tp>())>
|
||
|
static true_type __test(int);
|
||
|
|
||
|
template<typename>
|
||
|
static false_type __test(...);
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_destructible_impl_1
|
||
|
: public __do_is_destructible_impl_1
|
||
|
{
|
||
|
typedef decltype(__test<_Tp>(0)) type;
|
||
|
};
|
||
|
|
||
|
// Special implementation for abstract types
|
||
|
struct __do_is_destructible_impl_2
|
||
|
{
|
||
|
template<typename _Tp, typename = decltype(declval<_Tp&>().~_Tp())>
|
||
|
static true_type __test(int);
|
||
|
|
||
|
template<typename>
|
||
|
static false_type __test(...);
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_destructible_impl_2
|
||
|
: public __do_is_destructible_impl_2
|
||
|
{
|
||
|
typedef decltype(__test<_Tp>(0)) type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp,
|
||
|
bool = __or_<is_void<_Tp>,
|
||
|
__is_array_unknown_bounds<_Tp>>::value,
|
||
|
bool = __or_<is_reference<_Tp>, is_function<_Tp>>::value>
|
||
|
struct __is_destructible_safe;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_destructible_safe<_Tp, false, false>
|
||
|
: public conditional<is_abstract<_Tp>::value,
|
||
|
__is_destructible_impl_2<_Tp>,
|
||
|
__is_destructible_impl_1<_Tp>>::type::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_destructible_safe<_Tp, true, false>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_destructible_safe<_Tp, false, true>
|
||
|
: public true_type { };
|
||
|
|
||
|
/// is_destructible
|
||
|
template<typename _Tp>
|
||
|
struct is_destructible
|
||
|
: public integral_constant<bool, (__is_destructible_safe<_Tp>::value)>
|
||
|
{ };
|
||
|
|
||
|
struct __do_is_default_constructible_impl
|
||
|
{
|
||
|
template<typename _Tp, typename = decltype(_Tp())>
|
||
|
static true_type __test(int);
|
||
|
|
||
|
template<typename>
|
||
|
static false_type __test(...);
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_default_constructible_impl
|
||
|
: public __do_is_default_constructible_impl
|
||
|
{
|
||
|
typedef decltype(__test<_Tp>(0)) type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_default_constructible_atom
|
||
|
: public __and_<__not_<is_void<_Tp>>,
|
||
|
__is_default_constructible_impl<_Tp>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_array<_Tp>::value>
|
||
|
struct __is_default_constructible_safe;
|
||
|
|
||
|
// The following technique is a workaround for a current core language
|
||
|
// restriction, which does not allow for array types to occur in
|
||
|
// functional casts of the form T(). Complete arrays can be default-
|
||
|
// constructed, if the element type is default-constructible, but
|
||
|
// arrays with unknown bounds are not.
|
||
|
template<typename _Tp>
|
||
|
struct __is_default_constructible_safe<_Tp, true>
|
||
|
: public __and_<__is_array_known_bounds<_Tp>,
|
||
|
__is_default_constructible_atom<typename
|
||
|
remove_all_extents<_Tp>::type>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_default_constructible_safe<_Tp, false>
|
||
|
: public __is_default_constructible_atom<_Tp>::type
|
||
|
{ };
|
||
|
|
||
|
/// is_default_constructible
|
||
|
template<typename _Tp>
|
||
|
struct is_default_constructible
|
||
|
: public integral_constant<bool, (__is_default_constructible_safe<
|
||
|
_Tp>::value)>
|
||
|
{ };
|
||
|
|
||
|
|
||
|
// Implementation of is_constructible.
|
||
|
|
||
|
// The hardest part of this trait is the binary direct-initialization
|
||
|
// case, because we hit into a functional cast of the form T(arg).
|
||
|
// This implementation uses different strategies depending on the
|
||
|
// target type to reduce the test overhead as much as possible:
|
||
|
//
|
||
|
// a) For a reference target type, we use a static_cast expression
|
||
|
// modulo its extra cases.
|
||
|
//
|
||
|
// b) For a non-reference target type we use a ::new expression.
|
||
|
struct __do_is_static_castable_impl
|
||
|
{
|
||
|
template<typename _From, typename _To, typename
|
||
|
= decltype(static_cast<_To>(declval<_From>()))>
|
||
|
static true_type __test(int);
|
||
|
|
||
|
template<typename, typename>
|
||
|
static false_type __test(...);
|
||
|
};
|
||
|
|
||
|
template<typename _From, typename _To>
|
||
|
struct __is_static_castable_impl
|
||
|
: public __do_is_static_castable_impl
|
||
|
{
|
||
|
typedef decltype(__test<_From, _To>(0)) type;
|
||
|
};
|
||
|
|
||
|
template<typename _From, typename _To>
|
||
|
struct __is_static_castable_safe
|
||
|
: public __is_static_castable_impl<_From, _To>::type
|
||
|
{ };
|
||
|
|
||
|
// __is_static_castable
|
||
|
template<typename _From, typename _To>
|
||
|
struct __is_static_castable
|
||
|
: public integral_constant<bool, (__is_static_castable_safe<
|
||
|
_From, _To>::value)>
|
||
|
{ };
|
||
|
|
||
|
// Implementation for non-reference types. To meet the proper
|
||
|
// variable definition semantics, we also need to test for
|
||
|
// is_destructible in this case.
|
||
|
struct __do_is_direct_constructible_impl
|
||
|
{
|
||
|
template<typename _Tp, typename _Arg, typename
|
||
|
= decltype(::new _Tp(declval<_Arg>()))>
|
||
|
static true_type __test(int);
|
||
|
|
||
|
template<typename, typename>
|
||
|
static false_type __test(...);
|
||
|
};
|
||
|
|
||
|
template<typename _Tp, typename _Arg>
|
||
|
struct __is_direct_constructible_impl
|
||
|
: public __do_is_direct_constructible_impl
|
||
|
{
|
||
|
typedef decltype(__test<_Tp, _Arg>(0)) type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp, typename _Arg>
|
||
|
struct __is_direct_constructible_new_safe
|
||
|
: public __and_<is_destructible<_Tp>,
|
||
|
__is_direct_constructible_impl<_Tp, _Arg>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename, typename>
|
||
|
struct is_same;
|
||
|
|
||
|
template<typename, typename>
|
||
|
struct is_base_of;
|
||
|
|
||
|
template<typename>
|
||
|
struct remove_reference;
|
||
|
|
||
|
template<typename _From, typename _To, bool
|
||
|
= is_reference<_From>::value>
|
||
|
struct __is_base_to_derived_ref;
|
||
|
|
||
|
template<typename _From, typename _To>
|
||
|
struct __is_base_to_derived_ref<_From, _To, true>
|
||
|
{
|
||
|
typedef typename remove_cv<typename remove_reference<_From
|
||
|
>::type>::type __src_t;
|
||
|
typedef typename remove_cv<typename remove_reference<_To
|
||
|
>::type>::type __dst_t;
|
||
|
typedef __and_<__not_<is_same<__src_t, __dst_t>>,
|
||
|
is_base_of<__src_t, __dst_t>> type;
|
||
|
static constexpr bool value = type::value;
|
||
|
};
|
||
|
|
||
|
template<typename _From, typename _To>
|
||
|
struct __is_base_to_derived_ref<_From, _To, false>
|
||
|
: public false_type
|
||
|
{ };
|
||
|
|
||
|
template<typename _From, typename _To, bool
|
||
|
= __and_<is_lvalue_reference<_From>,
|
||
|
is_rvalue_reference<_To>>::value>
|
||
|
struct __is_lvalue_to_rvalue_ref;
|
||
|
|
||
|
template<typename _From, typename _To>
|
||
|
struct __is_lvalue_to_rvalue_ref<_From, _To, true>
|
||
|
{
|
||
|
typedef typename remove_cv<typename remove_reference<
|
||
|
_From>::type>::type __src_t;
|
||
|
typedef typename remove_cv<typename remove_reference<
|
||
|
_To>::type>::type __dst_t;
|
||
|
typedef __or_<is_same<__src_t, __dst_t>,
|
||
|
is_base_of<__dst_t, __src_t>> type;
|
||
|
static constexpr bool value = type::value;
|
||
|
};
|
||
|
|
||
|
template<typename _From, typename _To>
|
||
|
struct __is_lvalue_to_rvalue_ref<_From, _To, false>
|
||
|
: public false_type
|
||
|
{ };
|
||
|
|
||
|
// Here we handle direct-initialization to a reference type as
|
||
|
// equivalent to a static_cast modulo overshooting conversions.
|
||
|
// These are restricted to the following conversions:
|
||
|
// a) A glvalue of a base class to a derived class reference
|
||
|
// b) An lvalue to an rvalue-reference of reference-compatible
|
||
|
// types
|
||
|
template<typename _Tp, typename _Arg>
|
||
|
struct __is_direct_constructible_ref_cast
|
||
|
: public __and_<__is_static_castable<_Arg, _Tp>,
|
||
|
__not_<__or_<__is_base_to_derived_ref<_Arg, _Tp>,
|
||
|
__is_lvalue_to_rvalue_ref<_Arg, _Tp>
|
||
|
>>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, typename _Arg>
|
||
|
struct __is_direct_constructible_new
|
||
|
: public conditional<is_reference<_Tp>::value,
|
||
|
__is_direct_constructible_ref_cast<_Tp, _Arg>,
|
||
|
__is_direct_constructible_new_safe<_Tp, _Arg>
|
||
|
>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, typename _Arg>
|
||
|
struct __is_direct_constructible
|
||
|
: public integral_constant<bool, (__is_direct_constructible_new<
|
||
|
_Tp, _Arg>::value)>
|
||
|
{ };
|
||
|
|
||
|
// Since default-construction and binary direct-initialization have
|
||
|
// been handled separately, the implementation of the remaining
|
||
|
// n-ary construction cases is rather straightforward.
|
||
|
struct __do_is_nary_constructible_impl
|
||
|
{
|
||
|
template<typename _Tp, typename... _Args, typename
|
||
|
= decltype(_Tp(declval<_Args>()...))>
|
||
|
static true_type __test(int);
|
||
|
|
||
|
template<typename, typename...>
|
||
|
static false_type __test(...);
|
||
|
};
|
||
|
|
||
|
template<typename _Tp, typename... _Args>
|
||
|
struct __is_nary_constructible_impl
|
||
|
: public __do_is_nary_constructible_impl
|
||
|
{
|
||
|
typedef decltype(__test<_Tp, _Args...>(0)) type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp, typename... _Args>
|
||
|
struct __is_nary_constructible
|
||
|
: public __is_nary_constructible_impl<_Tp, _Args...>::type
|
||
|
{
|
||
|
static_assert(sizeof...(_Args) > 1,
|
||
|
"Only useful for > 1 arguments");
|
||
|
};
|
||
|
|
||
|
template<typename _Tp, typename... _Args>
|
||
|
struct __is_constructible_impl
|
||
|
: public __is_nary_constructible<_Tp, _Args...>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, typename _Arg>
|
||
|
struct __is_constructible_impl<_Tp, _Arg>
|
||
|
: public __is_direct_constructible<_Tp, _Arg>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_constructible_impl<_Tp>
|
||
|
: public is_default_constructible<_Tp>
|
||
|
{ };
|
||
|
|
||
|
/// is_constructible
|
||
|
template<typename _Tp, typename... _Args>
|
||
|
struct is_constructible
|
||
|
: public integral_constant<bool, (__is_constructible_impl<_Tp,
|
||
|
_Args...>::value)>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_copy_constructible_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_copy_constructible_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_copy_constructible_impl<_Tp, false>
|
||
|
: public is_constructible<_Tp, const _Tp&>
|
||
|
{ };
|
||
|
|
||
|
/// is_copy_constructible
|
||
|
template<typename _Tp>
|
||
|
struct is_copy_constructible
|
||
|
: public __is_copy_constructible_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_move_constructible_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_move_constructible_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_move_constructible_impl<_Tp, false>
|
||
|
: public is_constructible<_Tp, _Tp&&>
|
||
|
{ };
|
||
|
|
||
|
/// is_move_constructible
|
||
|
template<typename _Tp>
|
||
|
struct is_move_constructible
|
||
|
: public __is_move_constructible_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_default_constructible_atom
|
||
|
: public integral_constant<bool, noexcept(_Tp())>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_array<_Tp>::value>
|
||
|
struct __is_nt_default_constructible_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_default_constructible_impl<_Tp, true>
|
||
|
: public __and_<__is_array_known_bounds<_Tp>,
|
||
|
__is_nt_default_constructible_atom<typename
|
||
|
remove_all_extents<_Tp>::type>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_default_constructible_impl<_Tp, false>
|
||
|
: public __is_nt_default_constructible_atom<_Tp>
|
||
|
{ };
|
||
|
|
||
|
/// is_nothrow_default_constructible
|
||
|
template<typename _Tp>
|
||
|
struct is_nothrow_default_constructible
|
||
|
: public __and_<is_default_constructible<_Tp>,
|
||
|
__is_nt_default_constructible_impl<_Tp>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, typename... _Args>
|
||
|
struct __is_nt_constructible_impl
|
||
|
: public integral_constant<bool, noexcept(_Tp(declval<_Args>()...))>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, typename _Arg>
|
||
|
struct __is_nt_constructible_impl<_Tp, _Arg>
|
||
|
: public integral_constant<bool,
|
||
|
noexcept(static_cast<_Tp>(declval<_Arg>()))>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_constructible_impl<_Tp>
|
||
|
: public is_nothrow_default_constructible<_Tp>
|
||
|
{ };
|
||
|
|
||
|
/// is_nothrow_constructible
|
||
|
template<typename _Tp, typename... _Args>
|
||
|
struct is_nothrow_constructible
|
||
|
: public __and_<is_constructible<_Tp, _Args...>,
|
||
|
__is_nt_constructible_impl<_Tp, _Args...>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_nothrow_copy_constructible_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nothrow_copy_constructible_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nothrow_copy_constructible_impl<_Tp, false>
|
||
|
: public is_nothrow_constructible<_Tp, const _Tp&>
|
||
|
{ };
|
||
|
|
||
|
/// is_nothrow_copy_constructible
|
||
|
template<typename _Tp>
|
||
|
struct is_nothrow_copy_constructible
|
||
|
: public __is_nothrow_copy_constructible_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_nothrow_move_constructible_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nothrow_move_constructible_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nothrow_move_constructible_impl<_Tp, false>
|
||
|
: public is_nothrow_constructible<_Tp, _Tp&&>
|
||
|
{ };
|
||
|
|
||
|
/// is_nothrow_move_constructible
|
||
|
template<typename _Tp>
|
||
|
struct is_nothrow_move_constructible
|
||
|
: public __is_nothrow_move_constructible_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, typename _Up>
|
||
|
class __is_assignable_helper
|
||
|
: public __sfinae_types
|
||
|
{
|
||
|
template<typename _Tp1, typename _Up1>
|
||
|
static decltype(declval<_Tp1>() = declval<_Up1>(), __one())
|
||
|
__test(int);
|
||
|
|
||
|
template<typename, typename>
|
||
|
static __two __test(...);
|
||
|
|
||
|
public:
|
||
|
static constexpr bool value = sizeof(__test<_Tp, _Up>(0)) == 1;
|
||
|
};
|
||
|
|
||
|
/// is_assignable
|
||
|
template<typename _Tp, typename _Up>
|
||
|
struct is_assignable
|
||
|
: public integral_constant<bool,
|
||
|
__is_assignable_helper<_Tp, _Up>::value>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_copy_assignable_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_copy_assignable_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_copy_assignable_impl<_Tp, false>
|
||
|
: public is_assignable<_Tp&, const _Tp&>
|
||
|
{ };
|
||
|
|
||
|
/// is_copy_assignable
|
||
|
template<typename _Tp>
|
||
|
struct is_copy_assignable
|
||
|
: public __is_copy_assignable_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_move_assignable_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_move_assignable_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_move_assignable_impl<_Tp, false>
|
||
|
: public is_assignable<_Tp&, _Tp&&>
|
||
|
{ };
|
||
|
|
||
|
/// is_move_assignable
|
||
|
template<typename _Tp>
|
||
|
struct is_move_assignable
|
||
|
: public __is_move_assignable_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, typename _Up>
|
||
|
struct __is_nt_assignable_impl
|
||
|
: public integral_constant<bool, noexcept(declval<_Tp>() = declval<_Up>())>
|
||
|
{ };
|
||
|
|
||
|
/// is_nothrow_assignable
|
||
|
template<typename _Tp, typename _Up>
|
||
|
struct is_nothrow_assignable
|
||
|
: public __and_<is_assignable<_Tp, _Up>,
|
||
|
__is_nt_assignable_impl<_Tp, _Up>>::type
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_nt_copy_assignable_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_copy_assignable_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_copy_assignable_impl<_Tp, false>
|
||
|
: public is_nothrow_assignable<_Tp&, const _Tp&>
|
||
|
{ };
|
||
|
|
||
|
/// is_nothrow_copy_assignable
|
||
|
template<typename _Tp>
|
||
|
struct is_nothrow_copy_assignable
|
||
|
: public __is_nt_copy_assignable_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, bool = is_void<_Tp>::value>
|
||
|
struct __is_nt_move_assignable_impl;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_move_assignable_impl<_Tp, true>
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __is_nt_move_assignable_impl<_Tp, false>
|
||
|
: public is_nothrow_assignable<_Tp&, _Tp&&>
|
||
|
{ };
|
||
|
|
||
|
/// is_nothrow_move_assignable
|
||
|
template<typename _Tp>
|
||
|
struct is_nothrow_move_assignable
|
||
|
: public __is_nt_move_assignable_impl<_Tp>
|
||
|
{ };
|
||
|
|
||
|
/// has_trivial_default_constructor
|
||
|
template<typename _Tp>
|
||
|
struct has_trivial_default_constructor
|
||
|
: public integral_constant<bool, __has_trivial_constructor(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// has_trivial_copy_constructor
|
||
|
template<typename _Tp>
|
||
|
struct has_trivial_copy_constructor
|
||
|
: public integral_constant<bool, __has_trivial_copy(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// has_trivial_copy_assign
|
||
|
template<typename _Tp>
|
||
|
struct has_trivial_copy_assign
|
||
|
: public integral_constant<bool, __has_trivial_assign(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// has_trivial_destructor
|
||
|
template<typename _Tp>
|
||
|
struct has_trivial_destructor
|
||
|
: public integral_constant<bool, __has_trivial_destructor(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
/// has_virtual_destructor
|
||
|
template<typename _Tp>
|
||
|
struct has_virtual_destructor
|
||
|
: public integral_constant<bool, __has_virtual_destructor(_Tp)>
|
||
|
{ };
|
||
|
|
||
|
|
||
|
// type property queries.
|
||
|
|
||
|
/// alignment_of
|
||
|
template<typename _Tp>
|
||
|
struct alignment_of
|
||
|
: public integral_constant<size_t, __alignof__(_Tp)> { };
|
||
|
|
||
|
/// rank
|
||
|
template<typename>
|
||
|
struct rank
|
||
|
: public integral_constant<size_t, 0> { };
|
||
|
|
||
|
template<typename _Tp, size_t _Size>
|
||
|
struct rank<_Tp[_Size]>
|
||
|
: public integral_constant<size_t, 1 + rank<_Tp>::value> { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct rank<_Tp[]>
|
||
|
: public integral_constant<size_t, 1 + rank<_Tp>::value> { };
|
||
|
|
||
|
/// extent
|
||
|
template<typename, unsigned _Uint>
|
||
|
struct extent
|
||
|
: public integral_constant<size_t, 0> { };
|
||
|
|
||
|
template<typename _Tp, unsigned _Uint, size_t _Size>
|
||
|
struct extent<_Tp[_Size], _Uint>
|
||
|
: public integral_constant<size_t,
|
||
|
_Uint == 0 ? _Size : extent<_Tp,
|
||
|
_Uint - 1>::value>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp, unsigned _Uint>
|
||
|
struct extent<_Tp[], _Uint>
|
||
|
: public integral_constant<size_t,
|
||
|
_Uint == 0 ? 0 : extent<_Tp,
|
||
|
_Uint - 1>::value>
|
||
|
{ };
|
||
|
|
||
|
|
||
|
// type relations.
|
||
|
|
||
|
/// is_same
|
||
|
template<typename, typename>
|
||
|
struct is_same
|
||
|
: public false_type { };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct is_same<_Tp, _Tp>
|
||
|
: public true_type { };
|
||
|
|
||
|
/// is_base_of
|
||
|
template<typename _Base, typename _Derived>
|
||
|
struct is_base_of
|
||
|
: public integral_constant<bool, __is_base_of(_Base, _Derived)>
|
||
|
{ };
|
||
|
|
||
|
template<typename _From, typename _To,
|
||
|
bool = __or_<is_void<_From>, is_function<_To>,
|
||
|
is_array<_To>>::value>
|
||
|
struct __is_convertible_helper
|
||
|
{ static constexpr bool value = is_void<_To>::value; };
|
||
|
|
||
|
template<typename _From, typename _To>
|
||
|
class __is_convertible_helper<_From, _To, false>
|
||
|
: public __sfinae_types
|
||
|
{
|
||
|
template<typename _To1>
|
||
|
static void __test_aux(_To1);
|
||
|
|
||
|
template<typename _From1, typename _To1>
|
||
|
static decltype(__test_aux<_To1>(declval<_From1>()), __one())
|
||
|
__test(int);
|
||
|
|
||
|
template<typename, typename>
|
||
|
static __two __test(...);
|
||
|
|
||
|
public:
|
||
|
static constexpr bool value = sizeof(__test<_From, _To>(0)) == 1;
|
||
|
};
|
||
|
|
||
|
/// is_convertible
|
||
|
template<typename _From, typename _To>
|
||
|
struct is_convertible
|
||
|
: public integral_constant<bool,
|
||
|
__is_convertible_helper<_From, _To>::value>
|
||
|
{ };
|
||
|
|
||
|
/// is_explicitly_convertible
|
||
|
template<typename _From, typename _To>
|
||
|
struct is_explicitly_convertible
|
||
|
: public is_constructible<_To, _From>
|
||
|
{ };
|
||
|
|
||
|
|
||
|
// const-volatile modifications.
|
||
|
|
||
|
/// remove_const
|
||
|
template<typename _Tp>
|
||
|
struct remove_const
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct remove_const<_Tp const>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
/// remove_volatile
|
||
|
template<typename _Tp>
|
||
|
struct remove_volatile
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct remove_volatile<_Tp volatile>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
/// remove_cv
|
||
|
template<typename _Tp>
|
||
|
struct remove_cv
|
||
|
{
|
||
|
typedef typename
|
||
|
remove_const<typename remove_volatile<_Tp>::type>::type type;
|
||
|
};
|
||
|
|
||
|
/// add_const
|
||
|
template<typename _Tp>
|
||
|
struct add_const
|
||
|
{ typedef _Tp const type; };
|
||
|
|
||
|
/// add_volatile
|
||
|
template<typename _Tp>
|
||
|
struct add_volatile
|
||
|
{ typedef _Tp volatile type; };
|
||
|
|
||
|
/// add_cv
|
||
|
template<typename _Tp>
|
||
|
struct add_cv
|
||
|
{
|
||
|
typedef typename
|
||
|
add_const<typename add_volatile<_Tp>::type>::type type;
|
||
|
};
|
||
|
|
||
|
|
||
|
// Reference transformations.
|
||
|
|
||
|
/// remove_reference
|
||
|
template<typename _Tp>
|
||
|
struct remove_reference
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct remove_reference<_Tp&>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct remove_reference<_Tp&&>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp,
|
||
|
bool = __and_<__not_<is_reference<_Tp>>,
|
||
|
__not_<is_void<_Tp>>>::value,
|
||
|
bool = is_rvalue_reference<_Tp>::value>
|
||
|
struct __add_lvalue_reference_helper
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __add_lvalue_reference_helper<_Tp, true, false>
|
||
|
{ typedef _Tp& type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __add_lvalue_reference_helper<_Tp, false, true>
|
||
|
{ typedef typename remove_reference<_Tp>::type& type; };
|
||
|
|
||
|
/// add_lvalue_reference
|
||
|
template<typename _Tp>
|
||
|
struct add_lvalue_reference
|
||
|
: public __add_lvalue_reference_helper<_Tp>
|
||
|
{ };
|
||
|
|
||
|
template<typename _Tp,
|
||
|
bool = __and_<__not_<is_reference<_Tp>>,
|
||
|
__not_<is_void<_Tp>>>::value>
|
||
|
struct __add_rvalue_reference_helper
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __add_rvalue_reference_helper<_Tp, true>
|
||
|
{ typedef _Tp&& type; };
|
||
|
|
||
|
/// add_rvalue_reference
|
||
|
template<typename _Tp>
|
||
|
struct add_rvalue_reference
|
||
|
: public __add_rvalue_reference_helper<_Tp>
|
||
|
{ };
|
||
|
|
||
|
|
||
|
// sign modifications.
|
||
|
|
||
|
// Utility for constructing identically cv-qualified types.
|
||
|
template<typename _Unqualified, bool _IsConst, bool _IsVol>
|
||
|
struct __cv_selector;
|
||
|
|
||
|
template<typename _Unqualified>
|
||
|
struct __cv_selector<_Unqualified, false, false>
|
||
|
{ typedef _Unqualified __type; };
|
||
|
|
||
|
template<typename _Unqualified>
|
||
|
struct __cv_selector<_Unqualified, false, true>
|
||
|
{ typedef volatile _Unqualified __type; };
|
||
|
|
||
|
template<typename _Unqualified>
|
||
|
struct __cv_selector<_Unqualified, true, false>
|
||
|
{ typedef const _Unqualified __type; };
|
||
|
|
||
|
template<typename _Unqualified>
|
||
|
struct __cv_selector<_Unqualified, true, true>
|
||
|
{ typedef const volatile _Unqualified __type; };
|
||
|
|
||
|
template<typename _Qualified, typename _Unqualified,
|
||
|
bool _IsConst = is_const<_Qualified>::value,
|
||
|
bool _IsVol = is_volatile<_Qualified>::value>
|
||
|
class __match_cv_qualifiers
|
||
|
{
|
||
|
typedef __cv_selector<_Unqualified, _IsConst, _IsVol> __match;
|
||
|
|
||
|
public:
|
||
|
typedef typename __match::__type __type;
|
||
|
};
|
||
|
|
||
|
// Utility for finding the unsigned versions of signed integral types.
|
||
|
template<typename _Tp>
|
||
|
struct __make_unsigned
|
||
|
{ typedef _Tp __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_unsigned<char>
|
||
|
{ typedef unsigned char __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_unsigned<signed char>
|
||
|
{ typedef unsigned char __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_unsigned<short>
|
||
|
{ typedef unsigned short __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_unsigned<int>
|
||
|
{ typedef unsigned int __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_unsigned<long>
|
||
|
{ typedef unsigned long __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_unsigned<long long>
|
||
|
{ typedef unsigned long long __type; };
|
||
|
|
||
|
#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128)
|
||
|
template<>
|
||
|
struct __make_unsigned<__int128>
|
||
|
{ typedef unsigned __int128 __type; };
|
||
|
#endif
|
||
|
|
||
|
// Select between integral and enum: not possible to be both.
|
||
|
template<typename _Tp,
|
||
|
bool _IsInt = is_integral<_Tp>::value,
|
||
|
bool _IsEnum = is_enum<_Tp>::value>
|
||
|
class __make_unsigned_selector;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
class __make_unsigned_selector<_Tp, true, false>
|
||
|
{
|
||
|
typedef __make_unsigned<typename remove_cv<_Tp>::type> __unsignedt;
|
||
|
typedef typename __unsignedt::__type __unsigned_type;
|
||
|
typedef __match_cv_qualifiers<_Tp, __unsigned_type> __cv_unsigned;
|
||
|
|
||
|
public:
|
||
|
typedef typename __cv_unsigned::__type __type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
class __make_unsigned_selector<_Tp, false, true>
|
||
|
{
|
||
|
// With -fshort-enums, an enum may be as small as a char.
|
||
|
typedef unsigned char __smallest;
|
||
|
static const bool __b0 = sizeof(_Tp) <= sizeof(__smallest);
|
||
|
static const bool __b1 = sizeof(_Tp) <= sizeof(unsigned short);
|
||
|
static const bool __b2 = sizeof(_Tp) <= sizeof(unsigned int);
|
||
|
typedef conditional<__b2, unsigned int, unsigned long> __cond2;
|
||
|
typedef typename __cond2::type __cond2_type;
|
||
|
typedef conditional<__b1, unsigned short, __cond2_type> __cond1;
|
||
|
typedef typename __cond1::type __cond1_type;
|
||
|
|
||
|
public:
|
||
|
typedef typename conditional<__b0, __smallest, __cond1_type>::type __type;
|
||
|
};
|
||
|
|
||
|
// Given an integral/enum type, return the corresponding unsigned
|
||
|
// integer type.
|
||
|
// Primary template.
|
||
|
/// make_unsigned
|
||
|
template<typename _Tp>
|
||
|
struct make_unsigned
|
||
|
{ typedef typename __make_unsigned_selector<_Tp>::__type type; };
|
||
|
|
||
|
// Integral, but don't define.
|
||
|
template<>
|
||
|
struct make_unsigned<bool>;
|
||
|
|
||
|
|
||
|
// Utility for finding the signed versions of unsigned integral types.
|
||
|
template<typename _Tp>
|
||
|
struct __make_signed
|
||
|
{ typedef _Tp __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_signed<char>
|
||
|
{ typedef signed char __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_signed<unsigned char>
|
||
|
{ typedef signed char __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_signed<unsigned short>
|
||
|
{ typedef signed short __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_signed<unsigned int>
|
||
|
{ typedef signed int __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_signed<unsigned long>
|
||
|
{ typedef signed long __type; };
|
||
|
|
||
|
template<>
|
||
|
struct __make_signed<unsigned long long>
|
||
|
{ typedef signed long long __type; };
|
||
|
|
||
|
#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128)
|
||
|
template<>
|
||
|
struct __make_signed<unsigned __int128>
|
||
|
{ typedef __int128 __type; };
|
||
|
#endif
|
||
|
|
||
|
// Select between integral and enum: not possible to be both.
|
||
|
template<typename _Tp,
|
||
|
bool _IsInt = is_integral<_Tp>::value,
|
||
|
bool _IsEnum = is_enum<_Tp>::value>
|
||
|
class __make_signed_selector;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
class __make_signed_selector<_Tp, true, false>
|
||
|
{
|
||
|
typedef __make_signed<typename remove_cv<_Tp>::type> __signedt;
|
||
|
typedef typename __signedt::__type __signed_type;
|
||
|
typedef __match_cv_qualifiers<_Tp, __signed_type> __cv_signed;
|
||
|
|
||
|
public:
|
||
|
typedef typename __cv_signed::__type __type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
class __make_signed_selector<_Tp, false, true>
|
||
|
{
|
||
|
// With -fshort-enums, an enum may be as small as a char.
|
||
|
typedef signed char __smallest;
|
||
|
static const bool __b0 = sizeof(_Tp) <= sizeof(__smallest);
|
||
|
static const bool __b1 = sizeof(_Tp) <= sizeof(signed short);
|
||
|
static const bool __b2 = sizeof(_Tp) <= sizeof(signed int);
|
||
|
typedef conditional<__b2, signed int, signed long> __cond2;
|
||
|
typedef typename __cond2::type __cond2_type;
|
||
|
typedef conditional<__b1, signed short, __cond2_type> __cond1;
|
||
|
typedef typename __cond1::type __cond1_type;
|
||
|
|
||
|
public:
|
||
|
typedef typename conditional<__b0, __smallest, __cond1_type>::type __type;
|
||
|
};
|
||
|
|
||
|
// Given an integral/enum type, return the corresponding signed
|
||
|
// integer type.
|
||
|
// Primary template.
|
||
|
/// make_signed
|
||
|
template<typename _Tp>
|
||
|
struct make_signed
|
||
|
{ typedef typename __make_signed_selector<_Tp>::__type type; };
|
||
|
|
||
|
// Integral, but don't define.
|
||
|
template<>
|
||
|
struct make_signed<bool>;
|
||
|
|
||
|
|
||
|
// array modifications.
|
||
|
|
||
|
/// remove_extent
|
||
|
template<typename _Tp>
|
||
|
struct remove_extent
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp, size_t _Size>
|
||
|
struct remove_extent<_Tp[_Size]>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct remove_extent<_Tp[]>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
/// remove_all_extents
|
||
|
template<typename _Tp>
|
||
|
struct remove_all_extents
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp, size_t _Size>
|
||
|
struct remove_all_extents<_Tp[_Size]>
|
||
|
{ typedef typename remove_all_extents<_Tp>::type type; };
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct remove_all_extents<_Tp[]>
|
||
|
{ typedef typename remove_all_extents<_Tp>::type type; };
|
||
|
|
||
|
|
||
|
// pointer modifications.
|
||
|
|
||
|
template<typename _Tp, typename>
|
||
|
struct __remove_pointer_helper
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp, typename _Up>
|
||
|
struct __remove_pointer_helper<_Tp, _Up*>
|
||
|
{ typedef _Up type; };
|
||
|
|
||
|
/// remove_pointer
|
||
|
template<typename _Tp>
|
||
|
struct remove_pointer
|
||
|
: public __remove_pointer_helper<_Tp, typename remove_cv<_Tp>::type>
|
||
|
{ };
|
||
|
|
||
|
/// add_pointer
|
||
|
template<typename _Tp>
|
||
|
struct add_pointer
|
||
|
{ typedef typename remove_reference<_Tp>::type* type; };
|
||
|
|
||
|
|
||
|
template<size_t _Len>
|
||
|
struct __aligned_storage_msa
|
||
|
{
|
||
|
union __type
|
||
|
{
|
||
|
unsigned char __data[_Len];
|
||
|
struct __attribute__((__aligned__)) { } __align;
|
||
|
};
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* @brief Alignment type.
|
||
|
*
|
||
|
* The value of _Align is a default-alignment which shall be the
|
||
|
* most stringent alignment requirement for any C++ object type
|
||
|
* whose size is no greater than _Len (3.9). The member typedef
|
||
|
* type shall be a POD type suitable for use as uninitialized
|
||
|
* storage for any object whose size is at most _Len and whose
|
||
|
* alignment is a divisor of _Align.
|
||
|
*/
|
||
|
template<size_t _Len, size_t _Align =
|
||
|
__alignof__(typename __aligned_storage_msa<_Len>::__type)>
|
||
|
struct aligned_storage
|
||
|
{
|
||
|
union type
|
||
|
{
|
||
|
unsigned char __data[_Len];
|
||
|
struct __attribute__((__aligned__((_Align)))) { } __align;
|
||
|
};
|
||
|
};
|
||
|
|
||
|
|
||
|
// Decay trait for arrays and functions, used for perfect forwarding
|
||
|
// in make_pair, make_tuple, etc.
|
||
|
template<typename _Up,
|
||
|
bool _IsArray = is_array<_Up>::value,
|
||
|
bool _IsFunction = is_function<_Up>::value>
|
||
|
struct __decay_selector;
|
||
|
|
||
|
// NB: DR 705.
|
||
|
template<typename _Up>
|
||
|
struct __decay_selector<_Up, false, false>
|
||
|
{ typedef typename remove_cv<_Up>::type __type; };
|
||
|
|
||
|
template<typename _Up>
|
||
|
struct __decay_selector<_Up, true, false>
|
||
|
{ typedef typename remove_extent<_Up>::type* __type; };
|
||
|
|
||
|
template<typename _Up>
|
||
|
struct __decay_selector<_Up, false, true>
|
||
|
{ typedef typename add_pointer<_Up>::type __type; };
|
||
|
|
||
|
/// decay
|
||
|
template<typename _Tp>
|
||
|
class decay
|
||
|
{
|
||
|
typedef typename remove_reference<_Tp>::type __remove_type;
|
||
|
|
||
|
public:
|
||
|
typedef typename __decay_selector<__remove_type>::__type type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
class reference_wrapper;
|
||
|
|
||
|
// Helper which adds a reference to a type when given a reference_wrapper
|
||
|
template<typename _Tp>
|
||
|
struct __strip_reference_wrapper
|
||
|
{
|
||
|
typedef _Tp __type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __strip_reference_wrapper<reference_wrapper<_Tp> >
|
||
|
{
|
||
|
typedef _Tp& __type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __strip_reference_wrapper<const reference_wrapper<_Tp> >
|
||
|
{
|
||
|
typedef _Tp& __type;
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct __decay_and_strip
|
||
|
{
|
||
|
typedef typename __strip_reference_wrapper<
|
||
|
typename decay<_Tp>::type>::__type __type;
|
||
|
};
|
||
|
|
||
|
|
||
|
// Define a nested type if some predicate holds.
|
||
|
// Primary template.
|
||
|
/// enable_if
|
||
|
template<bool, typename _Tp = void>
|
||
|
struct enable_if
|
||
|
{ };
|
||
|
|
||
|
// Partial specialization for true.
|
||
|
template<typename _Tp>
|
||
|
struct enable_if<true, _Tp>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
|
||
|
// A conditional expression, but for types. If true, first, if false, second.
|
||
|
// Primary template.
|
||
|
/// conditional
|
||
|
template<bool _Cond, typename _Iftrue, typename _Iffalse>
|
||
|
struct conditional
|
||
|
{ typedef _Iftrue type; };
|
||
|
|
||
|
// Partial specialization for false.
|
||
|
template<typename _Iftrue, typename _Iffalse>
|
||
|
struct conditional<false, _Iftrue, _Iffalse>
|
||
|
{ typedef _Iffalse type; };
|
||
|
|
||
|
|
||
|
/// common_type
|
||
|
template<typename... _Tp>
|
||
|
struct common_type;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
struct common_type<_Tp>
|
||
|
{ typedef _Tp type; };
|
||
|
|
||
|
template<typename _Tp, typename _Up>
|
||
|
struct common_type<_Tp, _Up>
|
||
|
{ typedef decltype(true ? declval<_Tp>() : declval<_Up>()) type; };
|
||
|
|
||
|
template<typename _Tp, typename _Up, typename... _Vp>
|
||
|
struct common_type<_Tp, _Up, _Vp...>
|
||
|
{
|
||
|
typedef typename
|
||
|
common_type<typename common_type<_Tp, _Up>::type, _Vp...>::type type;
|
||
|
};
|
||
|
|
||
|
/// underlying_type
|
||
|
template<typename _Tp>
|
||
|
struct underlying_type
|
||
|
{
|
||
|
typedef __underlying_type(_Tp) type;
|
||
|
};
|
||
|
|
||
|
/// declval
|
||
|
template<typename _Tp>
|
||
|
struct __declval_protector
|
||
|
{
|
||
|
static const bool __stop = false;
|
||
|
static typename add_rvalue_reference<_Tp>::type __delegate();
|
||
|
};
|
||
|
|
||
|
template<typename _Tp>
|
||
|
inline typename add_rvalue_reference<_Tp>::type
|
||
|
declval() noexcept
|
||
|
{
|
||
|
static_assert(__declval_protector<_Tp>::__stop,
|
||
|
"declval() must not be used!");
|
||
|
return __declval_protector<_Tp>::__delegate();
|
||
|
}
|
||
|
|
||
|
/// result_of
|
||
|
template<typename _Signature>
|
||
|
class result_of;
|
||
|
|
||
|
template<typename _MemPtr, typename _Arg>
|
||
|
struct _Result_of_memobj;
|
||
|
|
||
|
template<typename _Res, typename _Class, typename _Arg>
|
||
|
struct _Result_of_memobj<_Res _Class::*, _Arg>
|
||
|
{
|
||
|
private:
|
||
|
typedef _Res _Class::* _Func;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
static _Tp _S_get(const _Class&);
|
||
|
template<typename _Tp>
|
||
|
static decltype(*declval<_Tp>()) _S_get(...);
|
||
|
|
||
|
public:
|
||
|
typedef
|
||
|
decltype(_S_get<_Arg>(declval<_Arg>()).*declval<_Func>())
|
||
|
__type;
|
||
|
};
|
||
|
|
||
|
template<typename _MemPtr, typename _Arg, typename... _ArgTypes>
|
||
|
struct _Result_of_memfun;
|
||
|
|
||
|
template<typename _Res, typename _Class, typename _Arg, typename... _Args>
|
||
|
struct _Result_of_memfun<_Res _Class::*, _Arg, _Args...>
|
||
|
{
|
||
|
private:
|
||
|
typedef _Res _Class::* _Func;
|
||
|
|
||
|
template<typename _Tp>
|
||
|
static _Tp _S_get(const _Class&);
|
||
|
template<typename _Tp>
|
||
|
static decltype(*declval<_Tp>()) _S_get(...);
|
||
|
|
||
|
public:
|
||
|
typedef
|
||
|
decltype((_S_get<_Arg>(declval<_Arg>()).*declval<_Func>())
|
||
|
(declval<_Args>()...) )
|
||
|
__type;
|
||
|
};
|
||
|
|
||
|
template<bool, bool, typename _Functor, typename... _ArgTypes>
|
||
|
struct _Result_of_impl;
|
||
|
|
||
|
template<typename _Functor, typename... _ArgTypes>
|
||
|
struct _Result_of_impl<false, false, _Functor, _ArgTypes...>
|
||
|
{
|
||
|
typedef
|
||
|
decltype( declval<_Functor>()(declval<_ArgTypes>()...) )
|
||
|
__type;
|
||
|
};
|
||
|
|
||
|
template<typename _MemPtr, typename _Arg>
|
||
|
struct _Result_of_impl<true, false, _MemPtr, _Arg>
|
||
|
: _Result_of_memobj<typename remove_reference<_MemPtr>::type, _Arg>
|
||
|
{
|
||
|
typedef typename _Result_of_memobj<
|
||
|
typename remove_reference<_MemPtr>::type, _Arg>::__type
|
||
|
__type;
|
||
|
};
|
||
|
|
||
|
template<typename _MemPtr, typename _Arg, typename... _ArgTypes>
|
||
|
struct _Result_of_impl<false, true, _MemPtr, _Arg, _ArgTypes...>
|
||
|
: _Result_of_memfun<typename remove_reference<_MemPtr>::type, _Arg,
|
||
|
_ArgTypes...>
|
||
|
{
|
||
|
typedef typename _Result_of_memfun<
|
||
|
typename remove_reference<_MemPtr>::type, _Arg, _ArgTypes...>::__type
|
||
|
__type;
|
||
|
};
|
||
|
|
||
|
template<typename _Functor, typename... _ArgTypes>
|
||
|
struct result_of<_Functor(_ArgTypes...)>
|
||
|
: _Result_of_impl<is_member_object_pointer<
|
||
|
typename remove_reference<_Functor>::type >::value,
|
||
|
is_member_function_pointer<
|
||
|
typename remove_reference<_Functor>::type >::value,
|
||
|
_Functor, _ArgTypes...>
|
||
|
{
|
||
|
typedef typename _Result_of_impl<
|
||
|
is_member_object_pointer<
|
||
|
typename remove_reference<_Functor>::type >::value,
|
||
|
is_member_function_pointer<
|
||
|
typename remove_reference<_Functor>::type >::value,
|
||
|
_Functor, _ArgTypes...>::__type
|
||
|
type;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Use SFINAE to determine if the type _Tp has a publicly-accessible
|
||
|
* member type _NTYPE.
|
||
|
*/
|
||
|
#define _GLIBCXX_HAS_NESTED_TYPE(_NTYPE) \
|
||
|
template<typename _Tp> \
|
||
|
class __has_##_NTYPE##_helper \
|
||
|
: __sfinae_types \
|
||
|
{ \
|
||
|
template<typename _Up> \
|
||
|
struct _Wrap_type \
|
||
|
{ }; \
|
||
|
\
|
||
|
template<typename _Up> \
|
||
|
static __one __test(_Wrap_type<typename _Up::_NTYPE>*); \
|
||
|
\
|
||
|
template<typename _Up> \
|
||
|
static __two __test(...); \
|
||
|
\
|
||
|
public: \
|
||
|
static constexpr bool value = sizeof(__test<_Tp>(0)) == 1; \
|
||
|
}; \
|
||
|
\
|
||
|
template<typename _Tp> \
|
||
|
struct __has_##_NTYPE \
|
||
|
: integral_constant<bool, __has_##_NTYPE##_helper \
|
||
|
<typename remove_cv<_Tp>::type>::value> \
|
||
|
{ };
|
||
|
|
||
|
// @} group metaprogramming
|
||
|
// _GLIBCXX_END_NAMESPACE_VERSION
|
||
|
} // namespace
|
||
|
|
||
|
// #endif // __GXX_EXPERIMENTAL_CXX0X__
|
||
|
|
||
|
#endif // _GLIBCXX_TYPE_TRAITS
|