diff --git a/src/kaleidoscope_internal/type_traits/type_traits b/src/kaleidoscope_internal/type_traits/type_traits index 2d4a6929..6c43b8fb 100644 --- a/src/kaleidoscope_internal/type_traits/type_traits +++ b/src/kaleidoscope_internal/type_traits/type_traits @@ -1,2082 +1,30 @@ -// C++11 -*- C++ -*- - -// Copyright (C) 2007-2013 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 -// . - -/** @file include/type_traits - * This is a Standard C++ Library header. +/* Kaleidoscope - Firmware for computer input devices + * Copyright (C) 2013-2019 Keyboard.io, Inc. + * + * This program 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, version 3. + * + * This program 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. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . */ -// This is taken from gcc 4.8 - -#ifndef _GLIBCXX_TYPE_TRAITS -#define _GLIBCXX_TYPE_TRAITS 1 +#pragma once -#include - -//#pragma GCC system_header +// The version of type traits that ships with Kaleidoscope was taken from +// a Linux system's gcc package. It can cause conflicts in virtual builds +// where it does not meet expectations of other system headers. +// +// Its reasonable to use the system's version whenever available for +// consistency reasons. -//#if __cplusplus < 201103L -#if 0 -//# include +#ifdef __AVR__ +#include "kaleidoscope_internal/type_traits/type_traits_gcc" #else - -//#include - -namespace std /*_GLIBCXX_VISIBILITY(default)*/ -{ -//_GLIBCXX_BEGIN_NAMESPACE_VERSION - - typedef size_t size_t; - typedef void* nullptr_t; - - /** - * @defgroup metaprogramming Metaprogramming - * @ingroup utilities - * - * Template utilities for compile-time introspection and modification, - * including type classification traits, type property inspection traits - * and type transformation traits. - * - * @{ - */ - - /// integral_constant - template - struct integral_constant - { - static constexpr _Tp value = __v; - typedef _Tp value_type; - typedef integral_constant<_Tp, __v> type; - constexpr operator value_type() { return value; } - }; - - template - constexpr _Tp integral_constant<_Tp, __v>::value; - - /// The type used as a compile-time boolean with true value. - typedef integral_constant true_type; - - /// The type used as a compile-time boolean with false value. - typedef integral_constant false_type; - - // Meta programming helper types. - - template - struct conditional; - - template - struct __or_; - - template<> - struct __or_<> - : public false_type - { }; - - template - struct __or_<_B1> - : public _B1 - { }; - - template - struct __or_<_B1, _B2> - : public conditional<_B1::value, _B1, _B2>::type - { }; - - template - struct __or_<_B1, _B2, _B3, _Bn...> - : public conditional<_B1::value, _B1, __or_<_B2, _B3, _Bn...>>::type - { }; - - template - struct __and_; - - template<> - struct __and_<> - : public true_type - { }; - - template - struct __and_<_B1> - : public _B1 - { }; - - template - struct __and_<_B1, _B2> - : public conditional<_B1::value, _B2, _B1>::type - { }; - - template - struct __and_<_B1, _B2, _B3, _Bn...> - : public conditional<_B1::value, __and_<_B2, _B3, _Bn...>, _B1>::type - { }; - - template - struct __not_ - : public integral_constant - { }; - - struct __sfinae_types - { - typedef char __one; - typedef struct { char __arr[2]; } __two; - }; - - // For several sfinae-friendly trait implementations we transport both the - // result information (as the member type) and the failure information (no - // member type). This is very similar to std::enable_if, but we cannot use - // them, because we need to derive from them as an implementation detail. - - template - struct __success_type - { typedef _Tp type; }; - - struct __failure_type - { }; - - // Primary type categories. - - template - struct remove_cv; - - template - struct __is_void_helper - : public false_type { }; - - template<> - struct __is_void_helper - : public true_type { }; - - /// is_void - template - struct is_void - : public integral_constant::type>::value)> - { }; - - template - struct __is_integral_helper - : public false_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - -#ifdef _GLIBCXX_USE_WCHAR_T - template<> - struct __is_integral_helper - : public true_type { }; -#endif - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : public true_type { }; - - template<> - struct __is_integral_helper - : 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 - : public true_type { }; -#endif - - /// is_integral - template - struct is_integral - : public integral_constant::type>::value)> - { }; - - template - struct __is_floating_point_helper - : public false_type { }; - - template<> - struct __is_floating_point_helper - : public true_type { }; - - template<> - struct __is_floating_point_helper - : public true_type { }; - - template<> - struct __is_floating_point_helper - : public true_type { }; - -#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128) - template<> - struct __is_floating_point_helper<__float128> - : public true_type { }; +#include #endif - - /// is_floating_point - template - struct is_floating_point - : public integral_constant::type>::value)> - { }; - - /// is_array - template - struct is_array - : public false_type { }; - - template - struct is_array<_Tp[_Size]> - : public true_type { }; - - template - struct is_array<_Tp[]> - : public true_type { }; - - template - struct __is_pointer_helper - : public false_type { }; - - template - struct __is_pointer_helper<_Tp*> - : public true_type { }; - - /// is_pointer - template - struct is_pointer - : public integral_constant::type>::value)> - { }; - - /// is_lvalue_reference - template - struct is_lvalue_reference - : public false_type { }; - - template - struct is_lvalue_reference<_Tp&> - : public true_type { }; - - /// is_rvalue_reference - template - struct is_rvalue_reference - : public false_type { }; - - template - struct is_rvalue_reference<_Tp&&> - : public true_type { }; - - template - struct is_function; - - template - struct __is_member_object_pointer_helper - : public false_type { }; - - template - struct __is_member_object_pointer_helper<_Tp _Cp::*> - : public integral_constant::value> { }; - - /// is_member_object_pointer - template - struct is_member_object_pointer - : public integral_constant::type>::value)> - { }; - - template - struct __is_member_function_pointer_helper - : public false_type { }; - - template - struct __is_member_function_pointer_helper<_Tp _Cp::*> - : public integral_constant::value> { }; - - /// is_member_function_pointer - template - struct is_member_function_pointer - : public integral_constant::type>::value)> - { }; - - /// is_enum - template - struct is_enum - : public integral_constant - { }; - - /// is_union - template - struct is_union - : public integral_constant - { }; - - /// is_class - template - struct is_class - : public integral_constant - { }; - - /// is_function - template - struct is_function - : public false_type { }; - - template - struct is_function<_Res(_ArgTypes...)> - : public true_type { }; - - template - struct is_function<_Res(_ArgTypes......)> - : public true_type { }; - - template - struct is_function<_Res(_ArgTypes...) const> - : public true_type { }; - - template - struct is_function<_Res(_ArgTypes......) const> - : public true_type { }; - - template - struct is_function<_Res(_ArgTypes...) volatile> - : public true_type { }; - - template - struct is_function<_Res(_ArgTypes......) volatile> - : public true_type { }; - - template - struct is_function<_Res(_ArgTypes...) const volatile> - : public true_type { }; - - template - struct is_function<_Res(_ArgTypes......) const volatile> - : public true_type { }; - - template - struct __is_nullptr_t_helper - : public false_type { }; - - template<> - struct __is_nullptr_t_helper - : public true_type { }; - - // __is_nullptr_t (extension). - template - struct __is_nullptr_t - : public integral_constant::type>::value)> - { }; - - // Composite type categories. - - /// is_reference - template - struct is_reference - : public __or_, - is_rvalue_reference<_Tp>>::type - { }; - - /// is_arithmetic - template - struct is_arithmetic - : public __or_, is_floating_point<_Tp>>::type - { }; - - /// is_fundamental - template - struct is_fundamental - : public __or_, is_void<_Tp>, __is_nullptr_t<_Tp>>::type - { }; - - /// is_object - template - struct is_object - : public __not_<__or_, is_reference<_Tp>, - is_void<_Tp>>>::type - { }; - - template - struct is_member_pointer; - - /// is_scalar - template - struct is_scalar - : public __or_, is_enum<_Tp>, is_pointer<_Tp>, - is_member_pointer<_Tp>, __is_nullptr_t<_Tp>>::type - { }; - - /// is_compound - template - struct is_compound - : public integral_constant::value> { }; - - template - struct __is_member_pointer_helper - : public false_type { }; - - template - struct __is_member_pointer_helper<_Tp _Cp::*> - : public true_type { }; - - /// is_member_pointer - template - struct is_member_pointer - : public integral_constant::type>::value)> - { }; - - // Type properties. - - /// is_const - template - struct is_const - : public false_type { }; - - template - struct is_const<_Tp const> - : public true_type { }; - - /// is_volatile - template - struct is_volatile - : public false_type { }; - - template - struct is_volatile<_Tp volatile> - : public true_type { }; - - /// is_trivial - template - struct is_trivial - : public integral_constant - { }; - - // is_trivially_copyable (still unimplemented) - - /// is_standard_layout - template - struct is_standard_layout - : public integral_constant - { }; - - /// is_pod - // Could use is_standard_layout && is_trivial instead of the builtin. - template - struct is_pod - : public integral_constant - { }; - - /// is_literal_type - template - struct is_literal_type - : public integral_constant - { }; - - /// is_empty - template - struct is_empty - : public integral_constant - { }; - - /// is_polymorphic - template - struct is_polymorphic - : public integral_constant - { }; - - /// is_abstract - template - struct is_abstract - : public integral_constant - { }; - - template::value, - bool = is_floating_point<_Tp>::value> - struct __is_signed_helper - : public false_type { }; - - template - struct __is_signed_helper<_Tp, false, true> - : public true_type { }; - - template - struct __is_signed_helper<_Tp, true, false> - : public integral_constant(_Tp(-1) < _Tp(0))> - { }; - - /// is_signed - template - struct is_signed - : public integral_constant::value> - { }; - - /// is_unsigned - template - struct is_unsigned - : public __and_, __not_>>::type - { }; - - - // Destructible and constructible type properties. - - template - struct add_rvalue_reference; - - /** - * @brief Utility to simplify expressions used in unevaluated operands - * @ingroup utilities - */ - template - typename add_rvalue_reference<_Tp>::type declval() noexcept; - - template - struct extent; - - template - struct remove_all_extents; - - template - struct __is_array_known_bounds - : public integral_constant::value > 0)> - { }; - - template - struct __is_array_unknown_bounds - : public __and_, __not_>>::type - { }; - - // In N3290 is_destructible does not say anything about function - // types and abstract types, see LWG 2049. This implementation - // describes function types as non-destructible and all complete - // object types as destructible, iff the explicit destructor - // call expression is wellformed. - struct __do_is_destructible_impl - { - template().~_Tp())> - static true_type __test(int); - - template - static false_type __test(...); - }; - - template - struct __is_destructible_impl - : public __do_is_destructible_impl - { - typedef decltype(__test<_Tp>(0)) type; - }; - - template, - __is_array_unknown_bounds<_Tp>, - is_function<_Tp>>::value, - bool = __or_, is_scalar<_Tp>>::value> - struct __is_destructible_safe; - - template - struct __is_destructible_safe<_Tp, false, false> - : public __is_destructible_impl::type>::type - { }; - - template - struct __is_destructible_safe<_Tp, true, false> - : public false_type { }; - - template - struct __is_destructible_safe<_Tp, false, true> - : public true_type { }; - - /// is_destructible - template - struct is_destructible - : public integral_constant::value)> - { }; - - // is_nothrow_destructible requires that is_destructible is - // satisfied as well. We realize that by mimicing the - // implementation of is_destructible but refer to noexcept(expr) - // instead of decltype(expr). - struct __do_is_nt_destructible_impl - { - template - static integral_constant().~_Tp())> - __test(int); - - template - static false_type __test(...); - }; - - template - struct __is_nt_destructible_impl - : public __do_is_nt_destructible_impl - { - typedef decltype(__test<_Tp>(0)) type; - }; - - template, - __is_array_unknown_bounds<_Tp>, - is_function<_Tp>>::value, - bool = __or_, is_scalar<_Tp>>::value> - struct __is_nt_destructible_safe; - - template - struct __is_nt_destructible_safe<_Tp, false, false> - : public __is_nt_destructible_impl::type>::type - { }; - - template - struct __is_nt_destructible_safe<_Tp, true, false> - : public false_type { }; - - template - struct __is_nt_destructible_safe<_Tp, false, true> - : public true_type { }; - - /// is_nothrow_destructible - template - struct is_nothrow_destructible - : public integral_constant::value)> - { }; - - struct __do_is_default_constructible_impl - { - template - static true_type __test(int); - - template - static false_type __test(...); - }; - - template - struct __is_default_constructible_impl - : public __do_is_default_constructible_impl - { - typedef decltype(__test<_Tp>(0)) type; - }; - - template - struct __is_default_constructible_atom - : public __and_<__not_>, - __is_default_constructible_impl<_Tp>>::type - { }; - - template::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 - struct __is_default_constructible_safe<_Tp, true> - : public __and_<__is_array_known_bounds<_Tp>, - __is_default_constructible_atom::type>>::type - { }; - - template - struct __is_default_constructible_safe<_Tp, false> - : public __is_default_constructible_atom<_Tp>::type - { }; - - /// is_default_constructible - template - struct is_default_constructible - : public integral_constant::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(declval<_From>()))> - static true_type __test(int); - - template - static false_type __test(...); - }; - - template - struct __is_static_castable_impl - : public __do_is_static_castable_impl - { - typedef decltype(__test<_From, _To>(0)) type; - }; - - template - struct __is_static_castable_safe - : public __is_static_castable_impl<_From, _To>::type - { }; - - // __is_static_castable - template - struct __is_static_castable - : public integral_constant::value)> - { }; - - // Implementation for non-reference types. To meet the proper - // variable definition semantics, we also need to test for - // is_destructible in this case. - // This form should be simplified by a single expression: - // ::delete ::new _Tp(declval<_Arg>()), see c++/51222. - struct __do_is_direct_constructible_impl - { - template()))> - static true_type __test(int); - - template - static false_type __test(...); - }; - - template - struct __is_direct_constructible_impl - : public __do_is_direct_constructible_impl - { - typedef decltype(__test<_Tp, _Arg>(0)) type; - }; - - template - struct __is_direct_constructible_new_safe - : public __and_, - __is_direct_constructible_impl<_Tp, _Arg>>::type - { }; - - template - struct is_same; - - template - struct is_base_of; - - template - struct remove_reference; - - template, - is_function<_From>>>::value> - struct __is_base_to_derived_ref; - - // Detect whether we have a downcast situation during - // reference binding. - template - struct __is_base_to_derived_ref<_From, _To, true> - { - typedef typename remove_cv::type>::type __src_t; - typedef typename remove_cv::type>::type __dst_t; - typedef __and_<__not_>, - is_base_of<__src_t, __dst_t>> type; - static constexpr bool value = type::value; - }; - - template - struct __is_base_to_derived_ref<_From, _To, false> - : public false_type - { }; - - template, - is_rvalue_reference<_To>>::value> - struct __is_lvalue_to_rvalue_ref; - - // Detect whether we have an lvalue of non-function type - // bound to a reference-compatible rvalue-reference. - template - struct __is_lvalue_to_rvalue_ref<_From, _To, true> - { - typedef typename remove_cv::type>::type __src_t; - typedef typename remove_cv::type>::type __dst_t; - typedef __and_<__not_>, - __or_, - is_base_of<__dst_t, __src_t>>> type; - static constexpr bool value = type::value; - }; - - template - 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 base class value to a derived class reference - // b) An lvalue to an rvalue-reference of reference-compatible - // types that are not functions - template - 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 - struct __is_direct_constructible_new - : public conditional::value, - __is_direct_constructible_ref_cast<_Tp, _Arg>, - __is_direct_constructible_new_safe<_Tp, _Arg> - >::type - { }; - - template - struct __is_direct_constructible - : public integral_constant::value)> - { }; - - // Since default-construction and binary direct-initialization have - // been handled separately, the implementation of the remaining - // n-ary construction cases is rather straightforward. We can use - // here a functional cast, because array types are excluded anyway - // and this form is never interpreted as a C cast. - struct __do_is_nary_constructible_impl - { - template()...))> - static true_type __test(int); - - template - static false_type __test(...); - }; - - template - struct __is_nary_constructible_impl - : public __do_is_nary_constructible_impl - { - typedef decltype(__test<_Tp, _Args...>(0)) type; - }; - - template - struct __is_nary_constructible - : public __is_nary_constructible_impl<_Tp, _Args...>::type - { - static_assert(sizeof...(_Args) > 1, - "Only useful for > 1 arguments"); - }; - - template - struct __is_constructible_impl - : public __is_nary_constructible<_Tp, _Args...> - { }; - - template - struct __is_constructible_impl<_Tp, _Arg> - : public __is_direct_constructible<_Tp, _Arg> - { }; - - template - struct __is_constructible_impl<_Tp> - : public is_default_constructible<_Tp> - { }; - - /// is_constructible - template - struct is_constructible - : public integral_constant::value)> - { }; - - template::value> - struct __is_copy_constructible_impl; - - template - struct __is_copy_constructible_impl<_Tp, true> - : public false_type { }; - - template - struct __is_copy_constructible_impl<_Tp, false> - : public is_constructible<_Tp, const _Tp&> - { }; - - /// is_copy_constructible - template - struct is_copy_constructible - : public __is_copy_constructible_impl<_Tp> - { }; - - template::value> - struct __is_move_constructible_impl; - - template - struct __is_move_constructible_impl<_Tp, true> - : public false_type { }; - - template - struct __is_move_constructible_impl<_Tp, false> - : public is_constructible<_Tp, _Tp&&> - { }; - - /// is_move_constructible - template - struct is_move_constructible - : public __is_move_constructible_impl<_Tp> - { }; - - template - struct __is_nt_default_constructible_atom - : public integral_constant - { }; - - template::value> - struct __is_nt_default_constructible_impl; - - template - struct __is_nt_default_constructible_impl<_Tp, true> - : public __and_<__is_array_known_bounds<_Tp>, - __is_nt_default_constructible_atom::type>>::type - { }; - - template - struct __is_nt_default_constructible_impl<_Tp, false> - : public __is_nt_default_constructible_atom<_Tp> - { }; - - /// is_nothrow_default_constructible - template - struct is_nothrow_default_constructible - : public __and_, - __is_nt_default_constructible_impl<_Tp>>::type - { }; - - template - struct __is_nt_constructible_impl - : public integral_constant()...))> - { }; - - template - struct __is_nt_constructible_impl<_Tp, _Arg> - : public integral_constant(declval<_Arg>()))> - { }; - - template - struct __is_nt_constructible_impl<_Tp> - : public is_nothrow_default_constructible<_Tp> - { }; - - /// is_nothrow_constructible - template - struct is_nothrow_constructible - : public __and_, - __is_nt_constructible_impl<_Tp, _Args...>>::type - { }; - - template::value> - struct __is_nothrow_copy_constructible_impl; - - template - struct __is_nothrow_copy_constructible_impl<_Tp, true> - : public false_type { }; - - template - struct __is_nothrow_copy_constructible_impl<_Tp, false> - : public is_nothrow_constructible<_Tp, const _Tp&> - { }; - - /// is_nothrow_copy_constructible - template - struct is_nothrow_copy_constructible - : public __is_nothrow_copy_constructible_impl<_Tp> - { }; - - template::value> - struct __is_nothrow_move_constructible_impl; - - template - struct __is_nothrow_move_constructible_impl<_Tp, true> - : public false_type { }; - - template - struct __is_nothrow_move_constructible_impl<_Tp, false> - : public is_nothrow_constructible<_Tp, _Tp&&> - { }; - - /// is_nothrow_move_constructible - template - struct is_nothrow_move_constructible - : public __is_nothrow_move_constructible_impl<_Tp> - { }; - - template - class __is_assignable_helper - : public __sfinae_types - { - template - static decltype(declval<_Tp1>() = declval<_Up1>(), __one()) - __test(int); - - template - static __two __test(...); - - public: - static constexpr bool value = sizeof(__test<_Tp, _Up>(0)) == 1; - }; - - /// is_assignable - template - struct is_assignable - : public integral_constant::value> - { }; - - template::value> - struct __is_copy_assignable_impl; - - template - struct __is_copy_assignable_impl<_Tp, true> - : public false_type { }; - - template - struct __is_copy_assignable_impl<_Tp, false> - : public is_assignable<_Tp&, const _Tp&> - { }; - - /// is_copy_assignable - template - struct is_copy_assignable - : public __is_copy_assignable_impl<_Tp> - { }; - - template::value> - struct __is_move_assignable_impl; - - template - struct __is_move_assignable_impl<_Tp, true> - : public false_type { }; - - template - struct __is_move_assignable_impl<_Tp, false> - : public is_assignable<_Tp&, _Tp&&> - { }; - - /// is_move_assignable - template - struct is_move_assignable - : public __is_move_assignable_impl<_Tp> - { }; - - template - struct __is_nt_assignable_impl - : public integral_constant() = declval<_Up>())> - { }; - - /// is_nothrow_assignable - template - struct is_nothrow_assignable - : public __and_, - __is_nt_assignable_impl<_Tp, _Up>>::type - { }; - - template::value> - struct __is_nt_copy_assignable_impl; - - template - struct __is_nt_copy_assignable_impl<_Tp, true> - : public false_type { }; - - template - struct __is_nt_copy_assignable_impl<_Tp, false> - : public is_nothrow_assignable<_Tp&, const _Tp&> - { }; - - /// is_nothrow_copy_assignable - template - struct is_nothrow_copy_assignable - : public __is_nt_copy_assignable_impl<_Tp> - { }; - - template::value> - struct __is_nt_move_assignable_impl; - - template - struct __is_nt_move_assignable_impl<_Tp, true> - : public false_type { }; - - template - struct __is_nt_move_assignable_impl<_Tp, false> - : public is_nothrow_assignable<_Tp&, _Tp&&> - { }; - - /// is_nothrow_move_assignable - template - struct is_nothrow_move_assignable - : public __is_nt_move_assignable_impl<_Tp> - { }; - - /// is_trivially_constructible (still unimplemented) - - /// is_trivially_default_constructible (still unimplemented) - - /// is_trivially_copy_constructible (still unimplemented) - - /// is_trivially_move_constructible (still unimplemented) - - /// is_trivially_assignable (still unimplemented) - - /// is_trivially_copy_assignable (still unimplemented) - - /// is_trivially_move_assignable (still unimplemented) - - /// is_trivially_destructible - template - struct is_trivially_destructible - : public __and_, integral_constant>::type - { }; - - /// has_trivial_default_constructor (temporary legacy) - template - struct has_trivial_default_constructor - : public integral_constant - { }; - - /// has_trivial_copy_constructor (temporary legacy) - template - struct has_trivial_copy_constructor - : public integral_constant - { }; - - /// has_trivial_copy_assign (temporary legacy) - template - struct has_trivial_copy_assign - : public integral_constant - { }; - - /// has_virtual_destructor - template - struct has_virtual_destructor - : public integral_constant - { }; - - - // type property queries. - - /// alignment_of - template - struct alignment_of - : public integral_constant { }; - - /// rank - template - struct rank - : public integral_constant { }; - - template - struct rank<_Tp[_Size]> - : public integral_constant::value> { }; - - template - struct rank<_Tp[]> - : public integral_constant::value> { }; - - /// extent - template - struct extent - : public integral_constant { }; - - template - struct extent<_Tp[_Size], _Uint> - : public integral_constant::value> - { }; - - template - struct extent<_Tp[], _Uint> - : public integral_constant::value> - { }; - - - // Type relations. - - /// is_same - template - struct is_same - : public false_type { }; - - template - struct is_same<_Tp, _Tp> - : public true_type { }; - - /// is_base_of - template - struct is_base_of - : public integral_constant - { }; - - template, is_function<_To>, - is_array<_To>>::value> - struct __is_convertible_helper - { static constexpr bool value = is_void<_To>::value; }; - - template - class __is_convertible_helper<_From, _To, false> - : public __sfinae_types - { - template - static void __test_aux(_To1); - - template - static decltype(__test_aux<_To1>(std::declval<_From1>()), __one()) - __test(int); - - template - static __two __test(...); - - public: - static constexpr bool value = sizeof(__test<_From, _To>(0)) == 1; - }; - - /// is_convertible - template - struct is_convertible - : public integral_constant::value> - { }; - - - // Const-volatile modifications. - - /// remove_const - template - struct remove_const - { typedef _Tp type; }; - - template - struct remove_const<_Tp const> - { typedef _Tp type; }; - - /// remove_volatile - template - struct remove_volatile - { typedef _Tp type; }; - - template - struct remove_volatile<_Tp volatile> - { typedef _Tp type; }; - - /// remove_cv - template - struct remove_cv - { - typedef typename - remove_const::type>::type type; - }; - - /// add_const - template - struct add_const - { typedef _Tp const type; }; - - /// add_volatile - template - struct add_volatile - { typedef _Tp volatile type; }; - - /// add_cv - template - struct add_cv - { - typedef typename - add_const::type>::type type; - }; - - - // Reference transformations. - - /// remove_reference - template - struct remove_reference - { typedef _Tp type; }; - - template - struct remove_reference<_Tp&> - { typedef _Tp type; }; - - template - struct remove_reference<_Tp&&> - { typedef _Tp type; }; - - template>, - __not_>>::value, - bool = is_rvalue_reference<_Tp>::value> - struct __add_lvalue_reference_helper - { typedef _Tp type; }; - - template - struct __add_lvalue_reference_helper<_Tp, true, false> - { typedef _Tp& type; }; - - template - struct __add_lvalue_reference_helper<_Tp, false, true> - { typedef typename remove_reference<_Tp>::type& type; }; - - /// add_lvalue_reference - template - struct add_lvalue_reference - : public __add_lvalue_reference_helper<_Tp> - { }; - - template>, - __not_>>::value> - struct __add_rvalue_reference_helper - { typedef _Tp type; }; - - template - struct __add_rvalue_reference_helper<_Tp, true> - { typedef _Tp&& type; }; - - /// add_rvalue_reference - template - struct add_rvalue_reference - : public __add_rvalue_reference_helper<_Tp> - { }; - - - // Sign modifications. - - // Utility for constructing identically cv-qualified types. - template - struct __cv_selector; - - template - struct __cv_selector<_Unqualified, false, false> - { typedef _Unqualified __type; }; - - template - struct __cv_selector<_Unqualified, false, true> - { typedef volatile _Unqualified __type; }; - - template - struct __cv_selector<_Unqualified, true, false> - { typedef const _Unqualified __type; }; - - template - struct __cv_selector<_Unqualified, true, true> - { typedef const volatile _Unqualified __type; }; - - template::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 - struct __make_unsigned - { typedef _Tp __type; }; - - template<> - struct __make_unsigned - { typedef unsigned char __type; }; - - template<> - struct __make_unsigned - { typedef unsigned char __type; }; - - template<> - struct __make_unsigned - { typedef unsigned short __type; }; - - template<> - struct __make_unsigned - { typedef unsigned int __type; }; - - template<> - struct __make_unsigned - { typedef unsigned long __type; }; - - template<> - struct __make_unsigned - { 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::value, - bool _IsEnum = is_enum<_Tp>::value> - class __make_unsigned_selector; - - template - class __make_unsigned_selector<_Tp, true, false> - { - typedef __make_unsigned::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 - 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 - struct make_unsigned - { typedef typename __make_unsigned_selector<_Tp>::__type type; }; - - // Integral, but don't define. - template<> - struct make_unsigned; - - - // Utility for finding the signed versions of unsigned integral types. - template - struct __make_signed - { typedef _Tp __type; }; - - template<> - struct __make_signed - { typedef signed char __type; }; - - template<> - struct __make_signed - { typedef signed char __type; }; - - template<> - struct __make_signed - { typedef signed short __type; }; - - template<> - struct __make_signed - { typedef signed int __type; }; - - template<> - struct __make_signed - { typedef signed long __type; }; - - template<> - struct __make_signed - { typedef signed long long __type; }; - -#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128) - template<> - struct __make_signed - { typedef __int128 __type; }; -#endif - - // Select between integral and enum: not possible to be both. - template::value, - bool _IsEnum = is_enum<_Tp>::value> - class __make_signed_selector; - - template - class __make_signed_selector<_Tp, true, false> - { - typedef __make_signed::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 - 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 - struct make_signed - { typedef typename __make_signed_selector<_Tp>::__type type; }; - - // Integral, but don't define. - template<> - struct make_signed; - - - // Array modifications. - - /// remove_extent - template - struct remove_extent - { typedef _Tp type; }; - - template - struct remove_extent<_Tp[_Size]> - { typedef _Tp type; }; - - template - struct remove_extent<_Tp[]> - { typedef _Tp type; }; - - /// remove_all_extents - template - struct remove_all_extents - { typedef _Tp type; }; - - template - struct remove_all_extents<_Tp[_Size]> - { typedef typename remove_all_extents<_Tp>::type type; }; - - template - struct remove_all_extents<_Tp[]> - { typedef typename remove_all_extents<_Tp>::type type; }; - - - // Pointer modifications. - - template - struct __remove_pointer_helper - { typedef _Tp type; }; - - template - struct __remove_pointer_helper<_Tp, _Up*> - { typedef _Up type; }; - - /// remove_pointer - template - struct remove_pointer - : public __remove_pointer_helper<_Tp, typename remove_cv<_Tp>::type> - { }; - - /// add_pointer - template - struct add_pointer - { typedef typename remove_reference<_Tp>::type* type; }; - - - template - 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::__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::value, - bool _IsFunction = is_function<_Up>::value> - struct __decay_selector; - - // NB: DR 705. - template - struct __decay_selector<_Up, false, false> - { typedef typename remove_cv<_Up>::type __type; }; - - template - struct __decay_selector<_Up, true, false> - { typedef typename remove_extent<_Up>::type* __type; }; - - template - struct __decay_selector<_Up, false, true> - { typedef typename add_pointer<_Up>::type __type; }; - - /// decay - template - class decay - { - typedef typename remove_reference<_Tp>::type __remove_type; - - public: - typedef typename __decay_selector<__remove_type>::__type type; - }; - - template - class reference_wrapper; - - // Helper which adds a reference to a type when given a reference_wrapper - template - struct __strip_reference_wrapper - { - typedef _Tp __type; - }; - - template - struct __strip_reference_wrapper > - { - typedef _Tp& __type; - }; - - template - struct __strip_reference_wrapper > - { - typedef _Tp& __type; - }; - - template - struct __decay_and_strip - { - typedef typename __strip_reference_wrapper< - typename decay<_Tp>::type>::__type __type; - }; - - - // Primary template. - /// Define a member typedef @c type only if a boolean constant is true. - template - struct enable_if - { }; - - // Partial specialization for true. - template - struct enable_if - { typedef _Tp type; }; - - /*template - using _Require = typename enable_if<__and_<_Cond...>::value>::type; -*/ - // Primary template. - /// Define a member typedef @c type to one of two argument types. - template - struct conditional - { typedef _Iftrue type; }; - - // Partial specialization for false. - template - struct conditional - { typedef _Iffalse type; }; - - /// common_type - template - struct common_type; - - // Sfinae-friendly common_type implementation: - - struct __do_common_type_impl - { - template - static __success_type() - : std::declval<_Up>())>::type> _S_test(int); - - template - static __failure_type _S_test(...); - }; - - template - struct __common_type_impl - : private __do_common_type_impl - { - typedef decltype(_S_test<_Tp, _Up>(0)) type; - }; - - struct __do_member_type_wrapper - { - template - static __success_type _S_test(int); - - template - static __failure_type _S_test(...); - }; - - template - struct __member_type_wrapper - : private __do_member_type_wrapper - { - typedef decltype(_S_test<_Tp>(0)) type; - }; - - template - struct __expanded_common_type_wrapper - { - typedef common_type type; - }; - - template - struct __expanded_common_type_wrapper<__failure_type, _Args...> - { typedef __failure_type type; }; - - template - struct common_type<_Tp> - { typedef typename decay<_Tp>::type type; }; - - template - struct common_type<_Tp, _Up> - : public __common_type_impl<_Tp, _Up>::type - { }; - - template - struct common_type<_Tp, _Up, _Vp...> - : public __expanded_common_type_wrapper>::type, _Vp...>::type - { }; - - /// The underlying type of an enum. - /* template - struct underlying_type - { - typedef __underlying_type(_Tp) type; - }; -*/ - template - struct __declval_protector - { - static const bool __stop = false; - static typename add_rvalue_reference<_Tp>::type __delegate(); - }; - - template - 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 - class result_of; - - // Sfinae-friendly result_of implementation: - - // [func.require] paragraph 1 bullet 1: - struct __result_of_memfun_ref_impl - { - template - static __success_type().*std::declval<_Fp>())(std::declval<_Args>()...) - )> _S_test(int); - - template - static __failure_type _S_test(...); - }; - - template - struct __result_of_memfun_ref - : private __result_of_memfun_ref_impl - { - typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type; - }; - - // [func.require] paragraph 1 bullet 2: - struct __result_of_memfun_deref_impl - { - template - static __success_type()).*std::declval<_Fp>())(std::declval<_Args>()...) - )> _S_test(int); - - template - static __failure_type _S_test(...); - }; - - template - struct __result_of_memfun_deref - : private __result_of_memfun_deref_impl - { - typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type; - }; - - // [func.require] paragraph 1 bullet 3: - struct __result_of_memobj_ref_impl - { - template - static __success_type().*std::declval<_Fp>() - )> _S_test(int); - - template - static __failure_type _S_test(...); - }; - - template - struct __result_of_memobj_ref - : private __result_of_memobj_ref_impl - { - typedef decltype(_S_test<_MemPtr, _Arg>(0)) type; - }; - - // [func.require] paragraph 1 bullet 4: - struct __result_of_memobj_deref_impl - { - template - static __success_type()).*std::declval<_Fp>() - )> _S_test(int); - - template - static __failure_type _S_test(...); - }; - - template - struct __result_of_memobj_deref - : private __result_of_memobj_deref_impl - { - typedef decltype(_S_test<_MemPtr, _Arg>(0)) type; - }; - - template - struct __result_of_memobj; - - template - struct __result_of_memobj<_Res _Class::*, _Arg> - { - typedef typename remove_cv::type>::type _Argval; - typedef _Res _Class::* _MemPtr; - typedef typename conditional<__or_, - is_base_of<_Class, _Argval>>::value, - __result_of_memobj_ref<_MemPtr, _Arg>, - __result_of_memobj_deref<_MemPtr, _Arg> - >::type::type type; - }; - - template - struct __result_of_memfun; - - template - struct __result_of_memfun<_Res _Class::*, _Arg, _Args...> - { - typedef typename remove_cv::type>::type _Argval; - typedef _Res _Class::* _MemPtr; - typedef typename conditional<__or_, - is_base_of<_Class, _Argval>>::value, - __result_of_memfun_ref<_MemPtr, _Arg, _Args...>, - __result_of_memfun_deref<_MemPtr, _Arg, _Args...> - >::type::type type; - }; - - template - struct __result_of_impl - { - typedef __failure_type type; - }; - - template - struct __result_of_impl - : public __result_of_memobj::type, _Arg> - { }; - - template - struct __result_of_impl - : public __result_of_memfun::type, _Arg, _Args...> - { }; - - // [func.require] paragraph 1 bullet 5: - struct __result_of_other_impl - { - template - static __success_type()(std::declval<_Args>()...) - )> _S_test(int); - - template - static __failure_type _S_test(...); - }; - - template - struct __result_of_impl - : private __result_of_other_impl - { - typedef decltype(_S_test<_Functor, _ArgTypes...>(0)) type; - }; - - template - struct result_of<_Functor(_ArgTypes...)> - : public __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 - { }; - - /// @} group metaprogramming - - /** - * Use SFINAE to determine if the type _Tp has a publicly-accessible - * member type _NTYPE. - */ -#define _GLIBCXX_HAS_NESTED_TYPE(_NTYPE) \ - template \ - class __has_##_NTYPE##_helper \ - : __sfinae_types \ - { \ - template \ - struct _Wrap_type \ - { }; \ - \ - template \ - static __one __test(_Wrap_type*); \ - \ - template \ - static __two __test(...); \ - \ - public: \ - static constexpr bool value = sizeof(__test<_Tp>(0)) == 1; \ - }; \ - \ - template \ - struct __has_##_NTYPE \ - : integral_constant::type>::value> \ - { }; - -//_GLIBCXX_END_NAMESPACE_VERSION -} // namespace std - -#endif // C++11 - -#endif // _GLIBCXX_TYPE_TRAITS diff --git a/src/kaleidoscope_internal/type_traits/type_traits_gcc b/src/kaleidoscope_internal/type_traits/type_traits_gcc new file mode 100644 index 00000000..2d4a6929 --- /dev/null +++ b/src/kaleidoscope_internal/type_traits/type_traits_gcc @@ -0,0 +1,2082 @@ +// C++11 -*- C++ -*- + +// Copyright (C) 2007-2013 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 +// . + +/** @file include/type_traits + * This is a Standard C++ Library header. + */ + +// This is taken from gcc 4.8 + +#ifndef _GLIBCXX_TYPE_TRAITS +#define _GLIBCXX_TYPE_TRAITS 1 + +#include + +//#pragma GCC system_header + +//#if __cplusplus < 201103L +#if 0 +//# include +#else + +//#include + +namespace std /*_GLIBCXX_VISIBILITY(default)*/ +{ +//_GLIBCXX_BEGIN_NAMESPACE_VERSION + + typedef size_t size_t; + typedef void* nullptr_t; + + /** + * @defgroup metaprogramming Metaprogramming + * @ingroup utilities + * + * Template utilities for compile-time introspection and modification, + * including type classification traits, type property inspection traits + * and type transformation traits. + * + * @{ + */ + + /// integral_constant + template + struct integral_constant + { + static constexpr _Tp value = __v; + typedef _Tp value_type; + typedef integral_constant<_Tp, __v> type; + constexpr operator value_type() { return value; } + }; + + template + constexpr _Tp integral_constant<_Tp, __v>::value; + + /// The type used as a compile-time boolean with true value. + typedef integral_constant true_type; + + /// The type used as a compile-time boolean with false value. + typedef integral_constant false_type; + + // Meta programming helper types. + + template + struct conditional; + + template + struct __or_; + + template<> + struct __or_<> + : public false_type + { }; + + template + struct __or_<_B1> + : public _B1 + { }; + + template + struct __or_<_B1, _B2> + : public conditional<_B1::value, _B1, _B2>::type + { }; + + template + struct __or_<_B1, _B2, _B3, _Bn...> + : public conditional<_B1::value, _B1, __or_<_B2, _B3, _Bn...>>::type + { }; + + template + struct __and_; + + template<> + struct __and_<> + : public true_type + { }; + + template + struct __and_<_B1> + : public _B1 + { }; + + template + struct __and_<_B1, _B2> + : public conditional<_B1::value, _B2, _B1>::type + { }; + + template + struct __and_<_B1, _B2, _B3, _Bn...> + : public conditional<_B1::value, __and_<_B2, _B3, _Bn...>, _B1>::type + { }; + + template + struct __not_ + : public integral_constant + { }; + + struct __sfinae_types + { + typedef char __one; + typedef struct { char __arr[2]; } __two; + }; + + // For several sfinae-friendly trait implementations we transport both the + // result information (as the member type) and the failure information (no + // member type). This is very similar to std::enable_if, but we cannot use + // them, because we need to derive from them as an implementation detail. + + template + struct __success_type + { typedef _Tp type; }; + + struct __failure_type + { }; + + // Primary type categories. + + template + struct remove_cv; + + template + struct __is_void_helper + : public false_type { }; + + template<> + struct __is_void_helper + : public true_type { }; + + /// is_void + template + struct is_void + : public integral_constant::type>::value)> + { }; + + template + struct __is_integral_helper + : public false_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + +#ifdef _GLIBCXX_USE_WCHAR_T + template<> + struct __is_integral_helper + : public true_type { }; +#endif + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : public true_type { }; + + template<> + struct __is_integral_helper + : 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 + : public true_type { }; +#endif + + /// is_integral + template + struct is_integral + : public integral_constant::type>::value)> + { }; + + template + struct __is_floating_point_helper + : public false_type { }; + + template<> + struct __is_floating_point_helper + : public true_type { }; + + template<> + struct __is_floating_point_helper + : public true_type { }; + + template<> + struct __is_floating_point_helper + : 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 + struct is_floating_point + : public integral_constant::type>::value)> + { }; + + /// is_array + template + struct is_array + : public false_type { }; + + template + struct is_array<_Tp[_Size]> + : public true_type { }; + + template + struct is_array<_Tp[]> + : public true_type { }; + + template + struct __is_pointer_helper + : public false_type { }; + + template + struct __is_pointer_helper<_Tp*> + : public true_type { }; + + /// is_pointer + template + struct is_pointer + : public integral_constant::type>::value)> + { }; + + /// is_lvalue_reference + template + struct is_lvalue_reference + : public false_type { }; + + template + struct is_lvalue_reference<_Tp&> + : public true_type { }; + + /// is_rvalue_reference + template + struct is_rvalue_reference + : public false_type { }; + + template + struct is_rvalue_reference<_Tp&&> + : public true_type { }; + + template + struct is_function; + + template + struct __is_member_object_pointer_helper + : public false_type { }; + + template + struct __is_member_object_pointer_helper<_Tp _Cp::*> + : public integral_constant::value> { }; + + /// is_member_object_pointer + template + struct is_member_object_pointer + : public integral_constant::type>::value)> + { }; + + template + struct __is_member_function_pointer_helper + : public false_type { }; + + template + struct __is_member_function_pointer_helper<_Tp _Cp::*> + : public integral_constant::value> { }; + + /// is_member_function_pointer + template + struct is_member_function_pointer + : public integral_constant::type>::value)> + { }; + + /// is_enum + template + struct is_enum + : public integral_constant + { }; + + /// is_union + template + struct is_union + : public integral_constant + { }; + + /// is_class + template + struct is_class + : public integral_constant + { }; + + /// is_function + template + struct is_function + : public false_type { }; + + template + struct is_function<_Res(_ArgTypes...)> + : public true_type { }; + + template + struct is_function<_Res(_ArgTypes......)> + : public true_type { }; + + template + struct is_function<_Res(_ArgTypes...) const> + : public true_type { }; + + template + struct is_function<_Res(_ArgTypes......) const> + : public true_type { }; + + template + struct is_function<_Res(_ArgTypes...) volatile> + : public true_type { }; + + template + struct is_function<_Res(_ArgTypes......) volatile> + : public true_type { }; + + template + struct is_function<_Res(_ArgTypes...) const volatile> + : public true_type { }; + + template + struct is_function<_Res(_ArgTypes......) const volatile> + : public true_type { }; + + template + struct __is_nullptr_t_helper + : public false_type { }; + + template<> + struct __is_nullptr_t_helper + : public true_type { }; + + // __is_nullptr_t (extension). + template + struct __is_nullptr_t + : public integral_constant::type>::value)> + { }; + + // Composite type categories. + + /// is_reference + template + struct is_reference + : public __or_, + is_rvalue_reference<_Tp>>::type + { }; + + /// is_arithmetic + template + struct is_arithmetic + : public __or_, is_floating_point<_Tp>>::type + { }; + + /// is_fundamental + template + struct is_fundamental + : public __or_, is_void<_Tp>, __is_nullptr_t<_Tp>>::type + { }; + + /// is_object + template + struct is_object + : public __not_<__or_, is_reference<_Tp>, + is_void<_Tp>>>::type + { }; + + template + struct is_member_pointer; + + /// is_scalar + template + struct is_scalar + : public __or_, is_enum<_Tp>, is_pointer<_Tp>, + is_member_pointer<_Tp>, __is_nullptr_t<_Tp>>::type + { }; + + /// is_compound + template + struct is_compound + : public integral_constant::value> { }; + + template + struct __is_member_pointer_helper + : public false_type { }; + + template + struct __is_member_pointer_helper<_Tp _Cp::*> + : public true_type { }; + + /// is_member_pointer + template + struct is_member_pointer + : public integral_constant::type>::value)> + { }; + + // Type properties. + + /// is_const + template + struct is_const + : public false_type { }; + + template + struct is_const<_Tp const> + : public true_type { }; + + /// is_volatile + template + struct is_volatile + : public false_type { }; + + template + struct is_volatile<_Tp volatile> + : public true_type { }; + + /// is_trivial + template + struct is_trivial + : public integral_constant + { }; + + // is_trivially_copyable (still unimplemented) + + /// is_standard_layout + template + struct is_standard_layout + : public integral_constant + { }; + + /// is_pod + // Could use is_standard_layout && is_trivial instead of the builtin. + template + struct is_pod + : public integral_constant + { }; + + /// is_literal_type + template + struct is_literal_type + : public integral_constant + { }; + + /// is_empty + template + struct is_empty + : public integral_constant + { }; + + /// is_polymorphic + template + struct is_polymorphic + : public integral_constant + { }; + + /// is_abstract + template + struct is_abstract + : public integral_constant + { }; + + template::value, + bool = is_floating_point<_Tp>::value> + struct __is_signed_helper + : public false_type { }; + + template + struct __is_signed_helper<_Tp, false, true> + : public true_type { }; + + template + struct __is_signed_helper<_Tp, true, false> + : public integral_constant(_Tp(-1) < _Tp(0))> + { }; + + /// is_signed + template + struct is_signed + : public integral_constant::value> + { }; + + /// is_unsigned + template + struct is_unsigned + : public __and_, __not_>>::type + { }; + + + // Destructible and constructible type properties. + + template + struct add_rvalue_reference; + + /** + * @brief Utility to simplify expressions used in unevaluated operands + * @ingroup utilities + */ + template + typename add_rvalue_reference<_Tp>::type declval() noexcept; + + template + struct extent; + + template + struct remove_all_extents; + + template + struct __is_array_known_bounds + : public integral_constant::value > 0)> + { }; + + template + struct __is_array_unknown_bounds + : public __and_, __not_>>::type + { }; + + // In N3290 is_destructible does not say anything about function + // types and abstract types, see LWG 2049. This implementation + // describes function types as non-destructible and all complete + // object types as destructible, iff the explicit destructor + // call expression is wellformed. + struct __do_is_destructible_impl + { + template().~_Tp())> + static true_type __test(int); + + template + static false_type __test(...); + }; + + template + struct __is_destructible_impl + : public __do_is_destructible_impl + { + typedef decltype(__test<_Tp>(0)) type; + }; + + template, + __is_array_unknown_bounds<_Tp>, + is_function<_Tp>>::value, + bool = __or_, is_scalar<_Tp>>::value> + struct __is_destructible_safe; + + template + struct __is_destructible_safe<_Tp, false, false> + : public __is_destructible_impl::type>::type + { }; + + template + struct __is_destructible_safe<_Tp, true, false> + : public false_type { }; + + template + struct __is_destructible_safe<_Tp, false, true> + : public true_type { }; + + /// is_destructible + template + struct is_destructible + : public integral_constant::value)> + { }; + + // is_nothrow_destructible requires that is_destructible is + // satisfied as well. We realize that by mimicing the + // implementation of is_destructible but refer to noexcept(expr) + // instead of decltype(expr). + struct __do_is_nt_destructible_impl + { + template + static integral_constant().~_Tp())> + __test(int); + + template + static false_type __test(...); + }; + + template + struct __is_nt_destructible_impl + : public __do_is_nt_destructible_impl + { + typedef decltype(__test<_Tp>(0)) type; + }; + + template, + __is_array_unknown_bounds<_Tp>, + is_function<_Tp>>::value, + bool = __or_, is_scalar<_Tp>>::value> + struct __is_nt_destructible_safe; + + template + struct __is_nt_destructible_safe<_Tp, false, false> + : public __is_nt_destructible_impl::type>::type + { }; + + template + struct __is_nt_destructible_safe<_Tp, true, false> + : public false_type { }; + + template + struct __is_nt_destructible_safe<_Tp, false, true> + : public true_type { }; + + /// is_nothrow_destructible + template + struct is_nothrow_destructible + : public integral_constant::value)> + { }; + + struct __do_is_default_constructible_impl + { + template + static true_type __test(int); + + template + static false_type __test(...); + }; + + template + struct __is_default_constructible_impl + : public __do_is_default_constructible_impl + { + typedef decltype(__test<_Tp>(0)) type; + }; + + template + struct __is_default_constructible_atom + : public __and_<__not_>, + __is_default_constructible_impl<_Tp>>::type + { }; + + template::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 + struct __is_default_constructible_safe<_Tp, true> + : public __and_<__is_array_known_bounds<_Tp>, + __is_default_constructible_atom::type>>::type + { }; + + template + struct __is_default_constructible_safe<_Tp, false> + : public __is_default_constructible_atom<_Tp>::type + { }; + + /// is_default_constructible + template + struct is_default_constructible + : public integral_constant::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(declval<_From>()))> + static true_type __test(int); + + template + static false_type __test(...); + }; + + template + struct __is_static_castable_impl + : public __do_is_static_castable_impl + { + typedef decltype(__test<_From, _To>(0)) type; + }; + + template + struct __is_static_castable_safe + : public __is_static_castable_impl<_From, _To>::type + { }; + + // __is_static_castable + template + struct __is_static_castable + : public integral_constant::value)> + { }; + + // Implementation for non-reference types. To meet the proper + // variable definition semantics, we also need to test for + // is_destructible in this case. + // This form should be simplified by a single expression: + // ::delete ::new _Tp(declval<_Arg>()), see c++/51222. + struct __do_is_direct_constructible_impl + { + template()))> + static true_type __test(int); + + template + static false_type __test(...); + }; + + template + struct __is_direct_constructible_impl + : public __do_is_direct_constructible_impl + { + typedef decltype(__test<_Tp, _Arg>(0)) type; + }; + + template + struct __is_direct_constructible_new_safe + : public __and_, + __is_direct_constructible_impl<_Tp, _Arg>>::type + { }; + + template + struct is_same; + + template + struct is_base_of; + + template + struct remove_reference; + + template, + is_function<_From>>>::value> + struct __is_base_to_derived_ref; + + // Detect whether we have a downcast situation during + // reference binding. + template + struct __is_base_to_derived_ref<_From, _To, true> + { + typedef typename remove_cv::type>::type __src_t; + typedef typename remove_cv::type>::type __dst_t; + typedef __and_<__not_>, + is_base_of<__src_t, __dst_t>> type; + static constexpr bool value = type::value; + }; + + template + struct __is_base_to_derived_ref<_From, _To, false> + : public false_type + { }; + + template, + is_rvalue_reference<_To>>::value> + struct __is_lvalue_to_rvalue_ref; + + // Detect whether we have an lvalue of non-function type + // bound to a reference-compatible rvalue-reference. + template + struct __is_lvalue_to_rvalue_ref<_From, _To, true> + { + typedef typename remove_cv::type>::type __src_t; + typedef typename remove_cv::type>::type __dst_t; + typedef __and_<__not_>, + __or_, + is_base_of<__dst_t, __src_t>>> type; + static constexpr bool value = type::value; + }; + + template + 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 base class value to a derived class reference + // b) An lvalue to an rvalue-reference of reference-compatible + // types that are not functions + template + 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 + struct __is_direct_constructible_new + : public conditional::value, + __is_direct_constructible_ref_cast<_Tp, _Arg>, + __is_direct_constructible_new_safe<_Tp, _Arg> + >::type + { }; + + template + struct __is_direct_constructible + : public integral_constant::value)> + { }; + + // Since default-construction and binary direct-initialization have + // been handled separately, the implementation of the remaining + // n-ary construction cases is rather straightforward. We can use + // here a functional cast, because array types are excluded anyway + // and this form is never interpreted as a C cast. + struct __do_is_nary_constructible_impl + { + template()...))> + static true_type __test(int); + + template + static false_type __test(...); + }; + + template + struct __is_nary_constructible_impl + : public __do_is_nary_constructible_impl + { + typedef decltype(__test<_Tp, _Args...>(0)) type; + }; + + template + struct __is_nary_constructible + : public __is_nary_constructible_impl<_Tp, _Args...>::type + { + static_assert(sizeof...(_Args) > 1, + "Only useful for > 1 arguments"); + }; + + template + struct __is_constructible_impl + : public __is_nary_constructible<_Tp, _Args...> + { }; + + template + struct __is_constructible_impl<_Tp, _Arg> + : public __is_direct_constructible<_Tp, _Arg> + { }; + + template + struct __is_constructible_impl<_Tp> + : public is_default_constructible<_Tp> + { }; + + /// is_constructible + template + struct is_constructible + : public integral_constant::value)> + { }; + + template::value> + struct __is_copy_constructible_impl; + + template + struct __is_copy_constructible_impl<_Tp, true> + : public false_type { }; + + template + struct __is_copy_constructible_impl<_Tp, false> + : public is_constructible<_Tp, const _Tp&> + { }; + + /// is_copy_constructible + template + struct is_copy_constructible + : public __is_copy_constructible_impl<_Tp> + { }; + + template::value> + struct __is_move_constructible_impl; + + template + struct __is_move_constructible_impl<_Tp, true> + : public false_type { }; + + template + struct __is_move_constructible_impl<_Tp, false> + : public is_constructible<_Tp, _Tp&&> + { }; + + /// is_move_constructible + template + struct is_move_constructible + : public __is_move_constructible_impl<_Tp> + { }; + + template + struct __is_nt_default_constructible_atom + : public integral_constant + { }; + + template::value> + struct __is_nt_default_constructible_impl; + + template + struct __is_nt_default_constructible_impl<_Tp, true> + : public __and_<__is_array_known_bounds<_Tp>, + __is_nt_default_constructible_atom::type>>::type + { }; + + template + struct __is_nt_default_constructible_impl<_Tp, false> + : public __is_nt_default_constructible_atom<_Tp> + { }; + + /// is_nothrow_default_constructible + template + struct is_nothrow_default_constructible + : public __and_, + __is_nt_default_constructible_impl<_Tp>>::type + { }; + + template + struct __is_nt_constructible_impl + : public integral_constant()...))> + { }; + + template + struct __is_nt_constructible_impl<_Tp, _Arg> + : public integral_constant(declval<_Arg>()))> + { }; + + template + struct __is_nt_constructible_impl<_Tp> + : public is_nothrow_default_constructible<_Tp> + { }; + + /// is_nothrow_constructible + template + struct is_nothrow_constructible + : public __and_, + __is_nt_constructible_impl<_Tp, _Args...>>::type + { }; + + template::value> + struct __is_nothrow_copy_constructible_impl; + + template + struct __is_nothrow_copy_constructible_impl<_Tp, true> + : public false_type { }; + + template + struct __is_nothrow_copy_constructible_impl<_Tp, false> + : public is_nothrow_constructible<_Tp, const _Tp&> + { }; + + /// is_nothrow_copy_constructible + template + struct is_nothrow_copy_constructible + : public __is_nothrow_copy_constructible_impl<_Tp> + { }; + + template::value> + struct __is_nothrow_move_constructible_impl; + + template + struct __is_nothrow_move_constructible_impl<_Tp, true> + : public false_type { }; + + template + struct __is_nothrow_move_constructible_impl<_Tp, false> + : public is_nothrow_constructible<_Tp, _Tp&&> + { }; + + /// is_nothrow_move_constructible + template + struct is_nothrow_move_constructible + : public __is_nothrow_move_constructible_impl<_Tp> + { }; + + template + class __is_assignable_helper + : public __sfinae_types + { + template + static decltype(declval<_Tp1>() = declval<_Up1>(), __one()) + __test(int); + + template + static __two __test(...); + + public: + static constexpr bool value = sizeof(__test<_Tp, _Up>(0)) == 1; + }; + + /// is_assignable + template + struct is_assignable + : public integral_constant::value> + { }; + + template::value> + struct __is_copy_assignable_impl; + + template + struct __is_copy_assignable_impl<_Tp, true> + : public false_type { }; + + template + struct __is_copy_assignable_impl<_Tp, false> + : public is_assignable<_Tp&, const _Tp&> + { }; + + /// is_copy_assignable + template + struct is_copy_assignable + : public __is_copy_assignable_impl<_Tp> + { }; + + template::value> + struct __is_move_assignable_impl; + + template + struct __is_move_assignable_impl<_Tp, true> + : public false_type { }; + + template + struct __is_move_assignable_impl<_Tp, false> + : public is_assignable<_Tp&, _Tp&&> + { }; + + /// is_move_assignable + template + struct is_move_assignable + : public __is_move_assignable_impl<_Tp> + { }; + + template + struct __is_nt_assignable_impl + : public integral_constant() = declval<_Up>())> + { }; + + /// is_nothrow_assignable + template + struct is_nothrow_assignable + : public __and_, + __is_nt_assignable_impl<_Tp, _Up>>::type + { }; + + template::value> + struct __is_nt_copy_assignable_impl; + + template + struct __is_nt_copy_assignable_impl<_Tp, true> + : public false_type { }; + + template + struct __is_nt_copy_assignable_impl<_Tp, false> + : public is_nothrow_assignable<_Tp&, const _Tp&> + { }; + + /// is_nothrow_copy_assignable + template + struct is_nothrow_copy_assignable + : public __is_nt_copy_assignable_impl<_Tp> + { }; + + template::value> + struct __is_nt_move_assignable_impl; + + template + struct __is_nt_move_assignable_impl<_Tp, true> + : public false_type { }; + + template + struct __is_nt_move_assignable_impl<_Tp, false> + : public is_nothrow_assignable<_Tp&, _Tp&&> + { }; + + /// is_nothrow_move_assignable + template + struct is_nothrow_move_assignable + : public __is_nt_move_assignable_impl<_Tp> + { }; + + /// is_trivially_constructible (still unimplemented) + + /// is_trivially_default_constructible (still unimplemented) + + /// is_trivially_copy_constructible (still unimplemented) + + /// is_trivially_move_constructible (still unimplemented) + + /// is_trivially_assignable (still unimplemented) + + /// is_trivially_copy_assignable (still unimplemented) + + /// is_trivially_move_assignable (still unimplemented) + + /// is_trivially_destructible + template + struct is_trivially_destructible + : public __and_, integral_constant>::type + { }; + + /// has_trivial_default_constructor (temporary legacy) + template + struct has_trivial_default_constructor + : public integral_constant + { }; + + /// has_trivial_copy_constructor (temporary legacy) + template + struct has_trivial_copy_constructor + : public integral_constant + { }; + + /// has_trivial_copy_assign (temporary legacy) + template + struct has_trivial_copy_assign + : public integral_constant + { }; + + /// has_virtual_destructor + template + struct has_virtual_destructor + : public integral_constant + { }; + + + // type property queries. + + /// alignment_of + template + struct alignment_of + : public integral_constant { }; + + /// rank + template + struct rank + : public integral_constant { }; + + template + struct rank<_Tp[_Size]> + : public integral_constant::value> { }; + + template + struct rank<_Tp[]> + : public integral_constant::value> { }; + + /// extent + template + struct extent + : public integral_constant { }; + + template + struct extent<_Tp[_Size], _Uint> + : public integral_constant::value> + { }; + + template + struct extent<_Tp[], _Uint> + : public integral_constant::value> + { }; + + + // Type relations. + + /// is_same + template + struct is_same + : public false_type { }; + + template + struct is_same<_Tp, _Tp> + : public true_type { }; + + /// is_base_of + template + struct is_base_of + : public integral_constant + { }; + + template, is_function<_To>, + is_array<_To>>::value> + struct __is_convertible_helper + { static constexpr bool value = is_void<_To>::value; }; + + template + class __is_convertible_helper<_From, _To, false> + : public __sfinae_types + { + template + static void __test_aux(_To1); + + template + static decltype(__test_aux<_To1>(std::declval<_From1>()), __one()) + __test(int); + + template + static __two __test(...); + + public: + static constexpr bool value = sizeof(__test<_From, _To>(0)) == 1; + }; + + /// is_convertible + template + struct is_convertible + : public integral_constant::value> + { }; + + + // Const-volatile modifications. + + /// remove_const + template + struct remove_const + { typedef _Tp type; }; + + template + struct remove_const<_Tp const> + { typedef _Tp type; }; + + /// remove_volatile + template + struct remove_volatile + { typedef _Tp type; }; + + template + struct remove_volatile<_Tp volatile> + { typedef _Tp type; }; + + /// remove_cv + template + struct remove_cv + { + typedef typename + remove_const::type>::type type; + }; + + /// add_const + template + struct add_const + { typedef _Tp const type; }; + + /// add_volatile + template + struct add_volatile + { typedef _Tp volatile type; }; + + /// add_cv + template + struct add_cv + { + typedef typename + add_const::type>::type type; + }; + + + // Reference transformations. + + /// remove_reference + template + struct remove_reference + { typedef _Tp type; }; + + template + struct remove_reference<_Tp&> + { typedef _Tp type; }; + + template + struct remove_reference<_Tp&&> + { typedef _Tp type; }; + + template>, + __not_>>::value, + bool = is_rvalue_reference<_Tp>::value> + struct __add_lvalue_reference_helper + { typedef _Tp type; }; + + template + struct __add_lvalue_reference_helper<_Tp, true, false> + { typedef _Tp& type; }; + + template + struct __add_lvalue_reference_helper<_Tp, false, true> + { typedef typename remove_reference<_Tp>::type& type; }; + + /// add_lvalue_reference + template + struct add_lvalue_reference + : public __add_lvalue_reference_helper<_Tp> + { }; + + template>, + __not_>>::value> + struct __add_rvalue_reference_helper + { typedef _Tp type; }; + + template + struct __add_rvalue_reference_helper<_Tp, true> + { typedef _Tp&& type; }; + + /// add_rvalue_reference + template + struct add_rvalue_reference + : public __add_rvalue_reference_helper<_Tp> + { }; + + + // Sign modifications. + + // Utility for constructing identically cv-qualified types. + template + struct __cv_selector; + + template + struct __cv_selector<_Unqualified, false, false> + { typedef _Unqualified __type; }; + + template + struct __cv_selector<_Unqualified, false, true> + { typedef volatile _Unqualified __type; }; + + template + struct __cv_selector<_Unqualified, true, false> + { typedef const _Unqualified __type; }; + + template + struct __cv_selector<_Unqualified, true, true> + { typedef const volatile _Unqualified __type; }; + + template::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 + struct __make_unsigned + { typedef _Tp __type; }; + + template<> + struct __make_unsigned + { typedef unsigned char __type; }; + + template<> + struct __make_unsigned + { typedef unsigned char __type; }; + + template<> + struct __make_unsigned + { typedef unsigned short __type; }; + + template<> + struct __make_unsigned + { typedef unsigned int __type; }; + + template<> + struct __make_unsigned + { typedef unsigned long __type; }; + + template<> + struct __make_unsigned + { 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::value, + bool _IsEnum = is_enum<_Tp>::value> + class __make_unsigned_selector; + + template + class __make_unsigned_selector<_Tp, true, false> + { + typedef __make_unsigned::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 + 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 + struct make_unsigned + { typedef typename __make_unsigned_selector<_Tp>::__type type; }; + + // Integral, but don't define. + template<> + struct make_unsigned; + + + // Utility for finding the signed versions of unsigned integral types. + template + struct __make_signed + { typedef _Tp __type; }; + + template<> + struct __make_signed + { typedef signed char __type; }; + + template<> + struct __make_signed + { typedef signed char __type; }; + + template<> + struct __make_signed + { typedef signed short __type; }; + + template<> + struct __make_signed + { typedef signed int __type; }; + + template<> + struct __make_signed + { typedef signed long __type; }; + + template<> + struct __make_signed + { typedef signed long long __type; }; + +#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128) + template<> + struct __make_signed + { typedef __int128 __type; }; +#endif + + // Select between integral and enum: not possible to be both. + template::value, + bool _IsEnum = is_enum<_Tp>::value> + class __make_signed_selector; + + template + class __make_signed_selector<_Tp, true, false> + { + typedef __make_signed::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 + 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 + struct make_signed + { typedef typename __make_signed_selector<_Tp>::__type type; }; + + // Integral, but don't define. + template<> + struct make_signed; + + + // Array modifications. + + /// remove_extent + template + struct remove_extent + { typedef _Tp type; }; + + template + struct remove_extent<_Tp[_Size]> + { typedef _Tp type; }; + + template + struct remove_extent<_Tp[]> + { typedef _Tp type; }; + + /// remove_all_extents + template + struct remove_all_extents + { typedef _Tp type; }; + + template + struct remove_all_extents<_Tp[_Size]> + { typedef typename remove_all_extents<_Tp>::type type; }; + + template + struct remove_all_extents<_Tp[]> + { typedef typename remove_all_extents<_Tp>::type type; }; + + + // Pointer modifications. + + template + struct __remove_pointer_helper + { typedef _Tp type; }; + + template + struct __remove_pointer_helper<_Tp, _Up*> + { typedef _Up type; }; + + /// remove_pointer + template + struct remove_pointer + : public __remove_pointer_helper<_Tp, typename remove_cv<_Tp>::type> + { }; + + /// add_pointer + template + struct add_pointer + { typedef typename remove_reference<_Tp>::type* type; }; + + + template + 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::__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::value, + bool _IsFunction = is_function<_Up>::value> + struct __decay_selector; + + // NB: DR 705. + template + struct __decay_selector<_Up, false, false> + { typedef typename remove_cv<_Up>::type __type; }; + + template + struct __decay_selector<_Up, true, false> + { typedef typename remove_extent<_Up>::type* __type; }; + + template + struct __decay_selector<_Up, false, true> + { typedef typename add_pointer<_Up>::type __type; }; + + /// decay + template + class decay + { + typedef typename remove_reference<_Tp>::type __remove_type; + + public: + typedef typename __decay_selector<__remove_type>::__type type; + }; + + template + class reference_wrapper; + + // Helper which adds a reference to a type when given a reference_wrapper + template + struct __strip_reference_wrapper + { + typedef _Tp __type; + }; + + template + struct __strip_reference_wrapper > + { + typedef _Tp& __type; + }; + + template + struct __strip_reference_wrapper > + { + typedef _Tp& __type; + }; + + template + struct __decay_and_strip + { + typedef typename __strip_reference_wrapper< + typename decay<_Tp>::type>::__type __type; + }; + + + // Primary template. + /// Define a member typedef @c type only if a boolean constant is true. + template + struct enable_if + { }; + + // Partial specialization for true. + template + struct enable_if + { typedef _Tp type; }; + + /*template + using _Require = typename enable_if<__and_<_Cond...>::value>::type; +*/ + // Primary template. + /// Define a member typedef @c type to one of two argument types. + template + struct conditional + { typedef _Iftrue type; }; + + // Partial specialization for false. + template + struct conditional + { typedef _Iffalse type; }; + + /// common_type + template + struct common_type; + + // Sfinae-friendly common_type implementation: + + struct __do_common_type_impl + { + template + static __success_type() + : std::declval<_Up>())>::type> _S_test(int); + + template + static __failure_type _S_test(...); + }; + + template + struct __common_type_impl + : private __do_common_type_impl + { + typedef decltype(_S_test<_Tp, _Up>(0)) type; + }; + + struct __do_member_type_wrapper + { + template + static __success_type _S_test(int); + + template + static __failure_type _S_test(...); + }; + + template + struct __member_type_wrapper + : private __do_member_type_wrapper + { + typedef decltype(_S_test<_Tp>(0)) type; + }; + + template + struct __expanded_common_type_wrapper + { + typedef common_type type; + }; + + template + struct __expanded_common_type_wrapper<__failure_type, _Args...> + { typedef __failure_type type; }; + + template + struct common_type<_Tp> + { typedef typename decay<_Tp>::type type; }; + + template + struct common_type<_Tp, _Up> + : public __common_type_impl<_Tp, _Up>::type + { }; + + template + struct common_type<_Tp, _Up, _Vp...> + : public __expanded_common_type_wrapper>::type, _Vp...>::type + { }; + + /// The underlying type of an enum. + /* template + struct underlying_type + { + typedef __underlying_type(_Tp) type; + }; +*/ + template + struct __declval_protector + { + static const bool __stop = false; + static typename add_rvalue_reference<_Tp>::type __delegate(); + }; + + template + 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 + class result_of; + + // Sfinae-friendly result_of implementation: + + // [func.require] paragraph 1 bullet 1: + struct __result_of_memfun_ref_impl + { + template + static __success_type().*std::declval<_Fp>())(std::declval<_Args>()...) + )> _S_test(int); + + template + static __failure_type _S_test(...); + }; + + template + struct __result_of_memfun_ref + : private __result_of_memfun_ref_impl + { + typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type; + }; + + // [func.require] paragraph 1 bullet 2: + struct __result_of_memfun_deref_impl + { + template + static __success_type()).*std::declval<_Fp>())(std::declval<_Args>()...) + )> _S_test(int); + + template + static __failure_type _S_test(...); + }; + + template + struct __result_of_memfun_deref + : private __result_of_memfun_deref_impl + { + typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type; + }; + + // [func.require] paragraph 1 bullet 3: + struct __result_of_memobj_ref_impl + { + template + static __success_type().*std::declval<_Fp>() + )> _S_test(int); + + template + static __failure_type _S_test(...); + }; + + template + struct __result_of_memobj_ref + : private __result_of_memobj_ref_impl + { + typedef decltype(_S_test<_MemPtr, _Arg>(0)) type; + }; + + // [func.require] paragraph 1 bullet 4: + struct __result_of_memobj_deref_impl + { + template + static __success_type()).*std::declval<_Fp>() + )> _S_test(int); + + template + static __failure_type _S_test(...); + }; + + template + struct __result_of_memobj_deref + : private __result_of_memobj_deref_impl + { + typedef decltype(_S_test<_MemPtr, _Arg>(0)) type; + }; + + template + struct __result_of_memobj; + + template + struct __result_of_memobj<_Res _Class::*, _Arg> + { + typedef typename remove_cv::type>::type _Argval; + typedef _Res _Class::* _MemPtr; + typedef typename conditional<__or_, + is_base_of<_Class, _Argval>>::value, + __result_of_memobj_ref<_MemPtr, _Arg>, + __result_of_memobj_deref<_MemPtr, _Arg> + >::type::type type; + }; + + template + struct __result_of_memfun; + + template + struct __result_of_memfun<_Res _Class::*, _Arg, _Args...> + { + typedef typename remove_cv::type>::type _Argval; + typedef _Res _Class::* _MemPtr; + typedef typename conditional<__or_, + is_base_of<_Class, _Argval>>::value, + __result_of_memfun_ref<_MemPtr, _Arg, _Args...>, + __result_of_memfun_deref<_MemPtr, _Arg, _Args...> + >::type::type type; + }; + + template + struct __result_of_impl + { + typedef __failure_type type; + }; + + template + struct __result_of_impl + : public __result_of_memobj::type, _Arg> + { }; + + template + struct __result_of_impl + : public __result_of_memfun::type, _Arg, _Args...> + { }; + + // [func.require] paragraph 1 bullet 5: + struct __result_of_other_impl + { + template + static __success_type()(std::declval<_Args>()...) + )> _S_test(int); + + template + static __failure_type _S_test(...); + }; + + template + struct __result_of_impl + : private __result_of_other_impl + { + typedef decltype(_S_test<_Functor, _ArgTypes...>(0)) type; + }; + + template + struct result_of<_Functor(_ArgTypes...)> + : public __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 + { }; + + /// @} group metaprogramming + + /** + * Use SFINAE to determine if the type _Tp has a publicly-accessible + * member type _NTYPE. + */ +#define _GLIBCXX_HAS_NESTED_TYPE(_NTYPE) \ + template \ + class __has_##_NTYPE##_helper \ + : __sfinae_types \ + { \ + template \ + struct _Wrap_type \ + { }; \ + \ + template \ + static __one __test(_Wrap_type*); \ + \ + template \ + static __two __test(...); \ + \ + public: \ + static constexpr bool value = sizeof(__test<_Tp>(0)) == 1; \ + }; \ + \ + template \ + struct __has_##_NTYPE \ + : integral_constant::type>::value> \ + { }; + +//_GLIBCXX_END_NAMESPACE_VERSION +} // namespace std + +#endif // C++11 + +#endif // _GLIBCXX_TYPE_TRAITS