// TR1 type_traits -*- C++ -*-
-// Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+// Copyright (C) 2004-2016 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 2, or (at your option)
+// 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,
// 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 library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// 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.
-/** @file
+// 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/>.
+
+/** @file tr1/type_traits
* This is a TR1 C++ Library header.
*/
-#ifndef _TYPE_TRAITS
-#define _TYPE_TRAITS 1
+#ifndef _GLIBCXX_TR1_TYPE_TRAITS
+#define _GLIBCXX_TR1_TYPE_TRAITS 1
+
+#pragma GCC system_header
#include <bits/c++config.h>
-#include <tr1/type_traits_fwd.h>
-// namespace std::tr1
-namespace std
+namespace std _GLIBCXX_VISIBILITY(default)
{
namespace tr1
{
- // For use in is_enum, is_function, and elsewhere.
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ /**
+ * @addtogroup metaprogramming
+ * @{
+ */
+
struct __sfinae_types
{
typedef char __one;
typedef struct { char __arr[2]; } __two;
};
-#define _DEFINE_SPEC_BODY(_Value) \
+#define _DEFINE_SPEC_0_HELPER \
+ template<>
+
+#define _DEFINE_SPEC_1_HELPER \
+ template<typename _Tp>
+
+#define _DEFINE_SPEC_2_HELPER \
+ template<typename _Tp, typename _Cp>
+
+#define _DEFINE_SPEC(_Order, _Trait, _Type, _Value) \
+ _DEFINE_SPEC_##_Order##_HELPER \
+ struct _Trait<_Type> \
: public integral_constant<bool, _Value> { };
-#define _DEFINE_SPEC_0_HELPER(_Spec, _Value) \
- template<> \
- struct _Spec \
- _DEFINE_SPEC_BODY(_Value)
-
-#define _DEFINE_SPEC_1_HELPER(_Spec, _Value) \
- template<typename _Tp> \
- struct _Spec \
- _DEFINE_SPEC_BODY(_Value)
-
-#define _DEFINE_SPEC_2_HELPER(_Spec, _Value) \
- template<typename _Tp, typename _Cp> \
- struct _Spec \
- _DEFINE_SPEC_BODY(_Value)
-
-#define _DEFINE_SPEC(_Order, _Trait, _Type, _Value) \
- _DEFINE_SPEC_##_Order##_HELPER(_Trait<_Type>, _Value) \
- _DEFINE_SPEC_##_Order##_HELPER(_Trait<_Type const>, _Value) \
- _DEFINE_SPEC_##_Order##_HELPER(_Trait<_Type volatile>, _Value) \
- _DEFINE_SPEC_##_Order##_HELPER(_Trait<_Type const volatile>, _Value)
-
- /// @brief helper classes [4.3].
+ // helper classes [4.3].
+
+ /// integral_constant
template<typename _Tp, _Tp __v>
struct integral_constant
{
typedef _Tp value_type;
typedef integral_constant<_Tp, __v> type;
};
+
+ /// typedef for true_type
typedef integral_constant<bool, true> true_type;
+
+ /// typedef for false_type
typedef integral_constant<bool, false> false_type;
- /// @brief primary type categories [4.5.1].
+ template<typename _Tp, _Tp __v>
+ const _Tp integral_constant<_Tp, __v>::value;
+
+ /// remove_cv
template<typename>
- struct is_void
+ struct remove_cv;
+
+ template<typename>
+ struct __is_void_helper
: public false_type { };
- _DEFINE_SPEC(0, is_void, void, true)
+ _DEFINE_SPEC(0, __is_void_helper, void, true)
+
+ // primary type categories [4.5.1].
+
+ /// 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
+ struct __is_integral_helper
: public false_type { };
- _DEFINE_SPEC(0, is_integral, bool, true)
- _DEFINE_SPEC(0, is_integral, char, true)
- _DEFINE_SPEC(0, is_integral, signed char, true)
- _DEFINE_SPEC(0, is_integral, unsigned char, true)
+ _DEFINE_SPEC(0, __is_integral_helper, bool, true)
+ _DEFINE_SPEC(0, __is_integral_helper, char, true)
+ _DEFINE_SPEC(0, __is_integral_helper, signed char, true)
+ _DEFINE_SPEC(0, __is_integral_helper, unsigned char, true)
#ifdef _GLIBCXX_USE_WCHAR_T
- _DEFINE_SPEC(0, is_integral, wchar_t, true)
+ _DEFINE_SPEC(0, __is_integral_helper, wchar_t, true)
#endif
- _DEFINE_SPEC(0, is_integral, short, true)
- _DEFINE_SPEC(0, is_integral, unsigned short, true)
- _DEFINE_SPEC(0, is_integral, int, true)
- _DEFINE_SPEC(0, is_integral, unsigned int, true)
- _DEFINE_SPEC(0, is_integral, long, true)
- _DEFINE_SPEC(0, is_integral, unsigned long, true)
- _DEFINE_SPEC(0, is_integral, long long, true)
- _DEFINE_SPEC(0, is_integral, unsigned long long, true)
+ _DEFINE_SPEC(0, __is_integral_helper, short, true)
+ _DEFINE_SPEC(0, __is_integral_helper, unsigned short, true)
+ _DEFINE_SPEC(0, __is_integral_helper, int, true)
+ _DEFINE_SPEC(0, __is_integral_helper, unsigned int, true)
+ _DEFINE_SPEC(0, __is_integral_helper, long, true)
+ _DEFINE_SPEC(0, __is_integral_helper, unsigned long, true)
+ _DEFINE_SPEC(0, __is_integral_helper, long long, true)
+ _DEFINE_SPEC(0, __is_integral_helper, unsigned long long, true)
+
+ /// 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
+ struct __is_floating_point_helper
: public false_type { };
- _DEFINE_SPEC(0, is_floating_point, float, true)
- _DEFINE_SPEC(0, is_floating_point, double, true)
- _DEFINE_SPEC(0, is_floating_point, long double, true)
+ _DEFINE_SPEC(0, __is_floating_point_helper, float, true)
+ _DEFINE_SPEC(0, __is_floating_point_helper, double, true)
+ _DEFINE_SPEC(0, __is_floating_point_helper, long double, true)
+
+ /// 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 { };
: public true_type { };
template<typename>
- struct is_pointer
- : public false_type { };
- _DEFINE_SPEC(1, is_pointer, _Tp*, true)
-
- template<typename>
- struct is_reference
+ struct __is_pointer_helper
: public false_type { };
+ _DEFINE_SPEC(1, __is_pointer_helper, _Tp*, true)
+ /// is_pointer
template<typename _Tp>
- struct is_reference<_Tp&>
- : public true_type { };
+ struct is_pointer
+ : public integral_constant<bool, (__is_pointer_helper<typename
+ remove_cv<_Tp>::type>::value)>
+ { };
+
+ /// is_reference
+ template<typename _Tp>
+ struct is_reference;
+
+ /// is_function
+ template<typename _Tp>
+ struct is_function;
template<typename>
- struct is_member_object_pointer
+ struct __is_member_object_pointer_helper
: public false_type { };
- _DEFINE_SPEC(2, is_member_object_pointer, _Tp _Cp::*,
+ _DEFINE_SPEC(2, __is_member_object_pointer_helper, _Tp _Cp::*,
!is_function<_Tp>::value)
- // Due to c++/19076, for the time being we cannot use the correct, neat
- // implementation :-(
- //
- // template<typename>
- // struct is_member_function_pointer
- // : public false_type { };
- // _DEFINE_SPEC(2, is_member_function_pointer, _Tp _Cp::*,
- // is_function<_Tp>::value)
- //
- // Temporary workaround for member functions with up to 15 arguments:
- template<typename>
- struct __is_mfp_helper
- { static const bool __value = false; };
-
- template<typename _Rt, typename _Cp>
- struct __is_mfp_helper<_Rt (_Cp::*) ()>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp>
- struct __is_mfp_helper<_Rt (_Cp::*) (...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11,
- typename _A12>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11, _A12)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11,
- typename _A12>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11, _A12, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11,
- typename _A12, typename _A13>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11, _A12,
- _A13)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11,
- typename _A12, typename _A13>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11, _A12,
- _A13, ...)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11,
- typename _A12, typename _A13, typename _A14>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11, _A12,
- _A13, _A14)>
- { static const bool __value = true; };
-
- template<typename _Rt, typename _Cp, typename _A0, typename _A1, typename _A2,
- typename _A3, typename _A4, typename _A5, typename _A6, typename _A7,
- typename _A8, typename _A9, typename _A10, typename _A11,
- typename _A12, typename _A13, typename _A14>
- struct __is_mfp_helper<_Rt (_Cp::*) (_A0, _A1, _A2, _A3, _A4, _A5, _A6,
- _A7, _A8, _A9, _A10, _A11, _A12,
- _A13, _A14, ...)>
- { static const bool __value = true; };
-
+ /// is_member_object_pointer
template<typename _Tp>
- struct is_member_function_pointer
- : public integral_constant<bool, (__is_mfp_helper<typename
- remove_cv<_Tp>::type>::__value)>
+ struct is_member_object_pointer
+ : public integral_constant<bool, (__is_member_object_pointer_helper<
+ typename remove_cv<_Tp>::type>::value)>
{ };
- template<typename _Tp, bool = (is_fundamental<_Tp>::value
- || is_array<_Tp>::value
- || is_pointer<_Tp>::value
- || is_reference<_Tp>::value
- || is_member_pointer<_Tp>::value
- || is_function<_Tp>::value)>
- struct __is_enum_helper
- : public __sfinae_types
- {
- private:
- static __one __test(bool);
- static __one __test(char);
- static __one __test(signed char);
- static __one __test(unsigned char);
-#ifdef _GLIBCXX_USE_WCHAR_T
- static __one __test(wchar_t);
-#endif
- static __one __test(short);
- static __one __test(unsigned short);
- static __one __test(int);
- static __one __test(unsigned int);
- static __one __test(long);
- static __one __test(unsigned long);
- static __one __test(long long);
- static __one __test(unsigned long long);
- static __two __test(...);
-
- struct __convert
- { operator _Tp() const; };
-
- public:
- static const bool __value = sizeof(__test(__convert())) == 1;
- };
+ template<typename>
+ struct __is_member_function_pointer_helper
+ : public false_type { };
+ _DEFINE_SPEC(2, __is_member_function_pointer_helper, _Tp _Cp::*,
+ is_function<_Tp>::value)
+ /// is_member_function_pointer
template<typename _Tp>
- struct __is_enum_helper<_Tp, true>
- { static const bool __value = false; };
+ 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_helper<_Tp>::__value> { };
+ : public integral_constant<bool, __is_enum(_Tp)>
+ { };
- template<typename _Tp, bool = (is_reference<_Tp>::value
- || is_void<_Tp>::value)>
- struct __is_function_helper
- : public __sfinae_types
- {
- private:
- template<typename>
- static __one __test(...);
- template<typename _Up>
- static __two __test(_Up(*)[1]);
-
- public:
- static const bool __value = sizeof(__test<_Tp>(0)) == 1;
- };
-
+ /// is_union
template<typename _Tp>
- struct __is_function_helper<_Tp, true>
- { static const bool __value = false; };
+ 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 integral_constant<bool, __is_function_helper<_Tp>::__value> { };
+ : 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 { };
- /// @brief composite type traits [4.5.2].
+ // composite type traits [4.5.2].
+
+ /// is_arithmetic
template<typename _Tp>
struct is_arithmetic
: public integral_constant<bool, (is_integral<_Tp>::value
|| is_floating_point<_Tp>::value)>
{ };
+ /// is_fundamental
template<typename _Tp>
struct is_fundamental
: public integral_constant<bool, (is_arithmetic<_Tp>::value
|| is_void<_Tp>::value)>
{ };
+ /// is_object
template<typename _Tp>
struct is_object
: public integral_constant<bool, !(is_function<_Tp>::value
|| is_void<_Tp>::value)>
{ };
+ /// is_member_pointer
+ template<typename _Tp>
+ struct is_member_pointer;
+
+ /// is_scalar
template<typename _Tp>
struct is_scalar
: public integral_constant<bool, (is_arithmetic<_Tp>::value
|| is_member_pointer<_Tp>::value)>
{ };
+ /// 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
- : public integral_constant<bool,
- (is_member_object_pointer<_Tp>::value
- || is_member_function_pointer<_Tp>::value)>
+ struct __is_member_pointer_helper
+ : public false_type { };
+ _DEFINE_SPEC(2, __is_member_pointer_helper, _Tp _Cp::*, true)
+
+ template<typename _Tp>
+ struct is_member_pointer
+ : public integral_constant<bool, (__is_member_pointer_helper<
+ typename remove_cv<_Tp>::type>::value)>
{ };
-
- /// @brief type properties [4.5.3].
+
+ // type properties [4.5.3].
+ /// is_const
template<typename>
struct is_const
: public false_type { };
struct is_const<_Tp const>
: public true_type { };
+ /// is_volatile
template<typename>
struct is_volatile
: public false_type { };
struct is_volatile<_Tp volatile>
: public true_type { };
+ /// is_empty
template<typename _Tp>
- struct is_pod
- : public integral_constant<bool, (is_void<_Tp>::value
- || is_scalar<typename
- remove_all_extents<_Tp>::type>::value)>
+ struct is_empty
+ : public integral_constant<bool, __is_empty(_Tp)>
{ };
+ /// is_polymorphic
template<typename _Tp>
- struct has_trivial_constructor
- : public integral_constant<bool, is_pod<_Tp>::value> { };
-
- template<typename _Tp>
- struct has_trivial_copy
- : public integral_constant<bool, (is_pod<_Tp>::value
- && !is_volatile<_Tp>::value)> { };
-
- template<typename _Tp>
- struct has_trivial_assign
- : public integral_constant<bool, (is_pod<_Tp>::value
- && !is_const<_Tp>::value
- && !is_volatile<_Tp>::value)> { };
-
- template<typename _Tp>
- struct has_trivial_destructor
- : public integral_constant<bool, is_pod<_Tp>::value> { };
-
- template<typename _Tp>
- struct has_nothrow_constructor
- : public integral_constant<bool, is_pod<_Tp>::value> { };
+ struct is_polymorphic
+ : public integral_constant<bool, __is_polymorphic(_Tp)>
+ { };
+ /// is_abstract
template<typename _Tp>
- struct has_nothrow_copy
- : public integral_constant<bool, (is_pod<_Tp>::value
- && !is_volatile<_Tp>::value)> { };
+ struct is_abstract
+ : public integral_constant<bool, __is_abstract(_Tp)>
+ { };
+ /// has_virtual_destructor
template<typename _Tp>
- struct has_nothrow_assign
- : public integral_constant<bool, (is_pod<_Tp>::value
- && !is_const<_Tp>::value
- && !is_volatile<_Tp>::value)> { };
-
- template<typename>
struct has_virtual_destructor
- : public false_type { };
+ : public integral_constant<bool, __has_virtual_destructor(_Tp)>
+ { };
+ /// alignment_of
template<typename _Tp>
struct alignment_of
: public integral_constant<std::size_t, __alignof__(_Tp)> { };
+ /// rank
template<typename>
struct rank
: public integral_constant<std::size_t, 0> { };
template<typename _Tp>
struct rank<_Tp[]>
: public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
-
- template<typename, unsigned>
+
+ /// extent
+ template<typename, unsigned _Uint = 0>
struct extent
: public integral_constant<std::size_t, 0> { };
_Uint == 0 ? 0 : extent<_Tp,
_Uint - 1>::value>
{ };
-
- /// @brief relationships between types [4.6].
+
+ // relationships between types [4.6].
+
+ /// is_same
template<typename, typename>
struct is_same
: public false_type { };
struct is_same<_Tp, _Tp>
: public true_type { };
- /// @brief const-volatile modifications [4.7.1].
+ // const-volatile modifications [4.7.1].
+
+ /// remove_const
template<typename _Tp>
struct remove_const
{ typedef _Tp type; };
struct remove_const<_Tp const>
{ typedef _Tp type; };
+ /// remove_volatile
template<typename _Tp>
struct remove_volatile
{ typedef _Tp type; };
struct remove_volatile<_Tp volatile>
{ typedef _Tp type; };
+ /// remove_cv
template<typename _Tp>
struct remove_cv
{
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
{
add_const<typename add_volatile<_Tp>::type>::type type;
};
- /// @brief reference modifications [4.7.2].
- template<typename _Tp>
- struct remove_reference
- { typedef _Tp type; };
-
- template<typename _Tp>
- struct remove_reference<_Tp&>
- { typedef _Tp type; };
-
- template<typename _Tp>
- struct add_reference
- { typedef _Tp& type; };
+ // array modifications [4.7.3].
- template<typename _Tp>
- struct add_reference<_Tp&>
- { typedef _Tp& type; };
-
- /// @brief array modififications [4.7.3].
+ /// remove_extent
template<typename _Tp>
struct remove_extent
{ typedef _Tp type; };
struct remove_extent<_Tp[]>
{ typedef _Tp type; };
+ /// remove_all_extents
template<typename _Tp>
struct remove_all_extents
{ typedef _Tp type; };
struct remove_all_extents<_Tp[]>
{ typedef typename remove_all_extents<_Tp>::type type; };
- /// @brief pointer modifications [4.7.4].
-#undef _DEFINE_SPEC_BODY
-#define _DEFINE_SPEC_BODY(_Value) \
+ // pointer modifications [4.7.4].
+
+ 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
- { typedef _Tp type; };
- _DEFINE_SPEC(1, remove_pointer, _Tp*, false)
-
+ : public __remove_pointer_helper<_Tp, typename remove_cv<_Tp>::type>
+ { };
+
+ template<typename>
+ struct remove_reference;
+
+ /// add_pointer
template<typename _Tp>
struct add_pointer
{ typedef typename remove_reference<_Tp>::type* type; };
- /// @brief other transformations [4.8].
-
- // Due to c++/19163 and c++/17743, for the time being we cannot use
- // the correct, neat implementation :-(
- //
- // template<std::size_t _Len, std::size_t _Align>
- // struct aligned_storage
- // { typedef char type[_Len] __attribute__((__aligned__(_Align))); }
- //
- // Temporary workaround, useful for Align up to 32:
- template<std::size_t, std::size_t>
- struct aligned_storage { };
-
- template<std::size_t _Len>
- struct aligned_storage<_Len, 1>
- {
- union type
- {
- unsigned char __data[_Len];
- char __align __attribute__((__aligned__(1)));
- };
- };
+ template<typename>
+ struct is_reference
+ : public false_type { };
+
+ template<typename _Tp>
+ struct is_reference<_Tp&>
+ : public true_type { };
+
+ template<typename _Tp>
+ struct is_pod
+ : public integral_constant<bool, __is_pod(_Tp) || is_void<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_constructor
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_copy
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_assign
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_destructor
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_nothrow_constructor
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_nothrow_copy
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_nothrow_assign
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
- template<std::size_t _Len>
- struct aligned_storage<_Len, 2>
+ template<typename>
+ struct __is_signed_helper
+ : public false_type { };
+ _DEFINE_SPEC(0, __is_signed_helper, signed char, true)
+ _DEFINE_SPEC(0, __is_signed_helper, short, true)
+ _DEFINE_SPEC(0, __is_signed_helper, int, true)
+ _DEFINE_SPEC(0, __is_signed_helper, long, true)
+ _DEFINE_SPEC(0, __is_signed_helper, long long, true)
+
+ template<typename _Tp>
+ struct is_signed
+ : public integral_constant<bool, (__is_signed_helper<typename
+ remove_cv<_Tp>::type>::value)>
+ { };
+
+ template<typename>
+ struct __is_unsigned_helper
+ : public false_type { };
+ _DEFINE_SPEC(0, __is_unsigned_helper, unsigned char, true)
+ _DEFINE_SPEC(0, __is_unsigned_helper, unsigned short, true)
+ _DEFINE_SPEC(0, __is_unsigned_helper, unsigned int, true)
+ _DEFINE_SPEC(0, __is_unsigned_helper, unsigned long, true)
+ _DEFINE_SPEC(0, __is_unsigned_helper, unsigned long long, true)
+
+ template<typename _Tp>
+ struct is_unsigned
+ : public integral_constant<bool, (__is_unsigned_helper<typename
+ remove_cv<_Tp>::type>::value)>
+ { };
+
+ template<typename _Base, typename _Derived>
+ struct __is_base_of_helper
{
- union type
- {
- unsigned char __data[_Len];
- char __align __attribute__((__aligned__(2)));
- };
+ typedef typename remove_cv<_Base>::type _NoCv_Base;
+ typedef typename remove_cv<_Derived>::type _NoCv_Derived;
+ static const bool __value = (is_same<_Base, _Derived>::value
+ || (__is_base_of(_Base, _Derived)
+ && !is_same<_NoCv_Base,
+ _NoCv_Derived>::value));
};
+
+ template<typename _Base, typename _Derived>
+ struct is_base_of
+ : public integral_constant<bool,
+ __is_base_of_helper<_Base, _Derived>::__value>
+ { };
- template<std::size_t _Len>
- struct aligned_storage<_Len, 4>
+ template<typename _From, typename _To>
+ struct __is_convertible_simple
+ : public __sfinae_types
{
- union type
- {
- unsigned char __data[_Len];
- char __align __attribute__((__aligned__(4)));
- };
+ private:
+ static __one __test(_To);
+ static __two __test(...);
+ static _From __makeFrom();
+
+ public:
+ static const bool __value = sizeof(__test(__makeFrom())) == 1;
};
- template<std::size_t _Len>
- struct aligned_storage<_Len, 8>
+ template<typename _Tp>
+ struct add_reference;
+
+ template<typename _Tp>
+ struct __is_int_or_cref
{
- union type
- {
- unsigned char __data[_Len];
- char __align __attribute__((__aligned__(8)));
- };
+ typedef typename remove_reference<_Tp>::type __rr_Tp;
+ static const bool __value = (is_integral<_Tp>::value
+ || (is_integral<__rr_Tp>::value
+ && is_const<__rr_Tp>::value
+ && !is_volatile<__rr_Tp>::value));
};
- template<std::size_t _Len>
- struct aligned_storage<_Len, 16>
+ template<typename _From, typename _To,
+ bool = (is_void<_From>::value || is_void<_To>::value
+ || is_function<_To>::value || is_array<_To>::value
+ // This special case is here only to avoid warnings.
+ || (is_floating_point<typename
+ remove_reference<_From>::type>::value
+ && __is_int_or_cref<_To>::__value))>
+ struct __is_convertible_helper
{
- union type
- {
- unsigned char __data[_Len];
- char __align __attribute__((__aligned__(16)));
- };
+ // "An imaginary lvalue of type From...".
+ static const bool __value = (__is_convertible_simple<typename
+ add_reference<_From>::type, _To>::__value);
};
-
- template<std::size_t _Len>
- struct aligned_storage<_Len, 32>
- {
+
+ template<typename _From, typename _To>
+ struct __is_convertible_helper<_From, _To, true>
+ { static const bool __value = (is_void<_To>::value
+ || (__is_int_or_cref<_To>::__value
+ && !is_void<_From>::value)); };
+
+ template<typename _From, typename _To>
+ struct is_convertible
+ : public integral_constant<bool,
+ __is_convertible_helper<_From, _To>::__value>
+ { };
+
+ // reference modifications [4.7.2].
+ template<typename _Tp>
+ struct remove_reference
+ { typedef _Tp type; };
+
+ template<typename _Tp>
+ struct remove_reference<_Tp&>
+ { typedef _Tp type; };
+
+ // NB: Careful with reference to void.
+ template<typename _Tp, bool = (is_void<_Tp>::value
+ || is_reference<_Tp>::value)>
+ struct __add_reference_helper
+ { typedef _Tp& type; };
+
+ template<typename _Tp>
+ struct __add_reference_helper<_Tp, true>
+ { typedef _Tp type; };
+
+ template<typename _Tp>
+ struct add_reference
+ : public __add_reference_helper<_Tp>
+ { };
+
+ // other transformations [4.8].
+ template<std::size_t _Len, std::size_t _Align>
+ struct aligned_storage
+ {
union type
{
unsigned char __data[_Len];
- char __align __attribute__((__aligned__(32)));
+ struct __attribute__((__aligned__((_Align)))) { } __align;
};
};
#undef _DEFINE_SPEC_1_HELPER
#undef _DEFINE_SPEC_2_HELPER
#undef _DEFINE_SPEC
-#undef _DEFINE_SPEC_BODY
+ /// @} group metaprogramming
+
+_GLIBCXX_END_NAMESPACE_VERSION
}
}
-#endif
+#endif // _GLIBCXX_TR1_TYPE_TRAITS
projects / thirdparty / gcc.git / blobdiff