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| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef _LIBCPP___TYPE_IS_CONSTRUCTIBLE_H |
| 10 | #define _LIBCPP___TYPE_IS_CONSTRUCTIBLE_H |
| 11 | |
| 12 | #include <__config> |
| 13 | #include <__type_traits/add_lvalue_reference.h> |
| 14 | #include <__type_traits/add_rvalue_reference.h> |
| 15 | #include <__type_traits/integral_constant.h> |
| 16 | |
| 17 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 18 | # pragma GCC system_header |
| 19 | #endif |
| 20 | |
| 21 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 22 | |
| 23 | template <class _Tp, class... _Args> |
| 24 | struct _LIBCPP_NO_SPECIALIZATIONS is_constructible : integral_constant<bool, __is_constructible(_Tp, _Args...)> {}; |
| 25 | |
| 26 | #if _LIBCPP_STD_VER >= 17 |
| 27 | template <class _Tp, class... _Args> |
| 28 | _LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_constructible_v = __is_constructible(_Tp, _Args...); |
| 29 | #endif |
| 30 | |
| 31 | template <class _Tp> |
| 32 | struct _LIBCPP_NO_SPECIALIZATIONS is_copy_constructible |
| 33 | : integral_constant<bool, __is_constructible(_Tp, __add_lvalue_reference_t<const _Tp>)> {}; |
| 34 | |
| 35 | #if _LIBCPP_STD_VER >= 17 |
| 36 | template <class _Tp> |
| 37 | _LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_copy_constructible_v = is_copy_constructible<_Tp>::value; |
| 38 | #endif |
| 39 | |
| 40 | template <class _Tp> |
| 41 | struct _LIBCPP_NO_SPECIALIZATIONS is_move_constructible |
| 42 | : integral_constant<bool, __is_constructible(_Tp, __add_rvalue_reference_t<_Tp>)> {}; |
| 43 | |
| 44 | #if _LIBCPP_STD_VER >= 17 |
| 45 | template <class _Tp> |
| 46 | _LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_move_constructible_v = is_move_constructible<_Tp>::value; |
| 47 | #endif |
| 48 | |
| 49 | template <class _Tp> |
| 50 | struct _LIBCPP_NO_SPECIALIZATIONS is_default_constructible : integral_constant<bool, __is_constructible(_Tp)> {}; |
| 51 | |
| 52 | #if _LIBCPP_STD_VER >= 17 |
| 53 | template <class _Tp> |
| 54 | _LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_default_constructible_v = __is_constructible(_Tp); |
| 55 | #endif |
| 56 | |
| 57 | _LIBCPP_END_NAMESPACE_STD |
| 58 | |
| 59 | #endif // _LIBCPP___TYPE_IS_CONSTRUCTIBLE_H |
| 60 |
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