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Diffstat (limited to 'libcxx/include/__memory/unique_ptr.h')
| -rw-r--r-- | libcxx/include/__memory/unique_ptr.h | 773 |
1 files changed, 773 insertions, 0 deletions
diff --git a/libcxx/include/__memory/unique_ptr.h b/libcxx/include/__memory/unique_ptr.h new file mode 100644 index 000000000000..083e0a8c250d --- /dev/null +++ b/libcxx/include/__memory/unique_ptr.h @@ -0,0 +1,773 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___MEMORY_UNIQUE_PTR_H +#define _LIBCPP___MEMORY_UNIQUE_PTR_H + +#include <__config> +#include <__functional_base> +#include <__functional/hash.h> +#include <__functional/operations.h> +#include <__memory/allocator_traits.h> // __pointer +#include <__memory/compressed_pair.h> +#include <__utility/forward.h> +#include <cstddef> +#include <type_traits> +#include <utility> + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) +# include <__memory/auto_ptr.h> +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS default_delete { + static_assert(!is_function<_Tp>::value, + "default_delete cannot be instantiated for function types"); +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY constexpr default_delete() _NOEXCEPT = default; +#else + _LIBCPP_INLINE_VISIBILITY default_delete() {} +#endif + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + default_delete(const default_delete<_Up>&, + typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = + 0) _NOEXCEPT {} + + _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __ptr) const _NOEXCEPT { + static_assert(sizeof(_Tp) > 0, + "default_delete can not delete incomplete type"); + static_assert(!is_void<_Tp>::value, + "default_delete can not delete incomplete type"); + delete __ptr; + } +}; + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> { +private: + template <class _Up> + struct _EnableIfConvertible + : enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value> {}; + +public: +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY constexpr default_delete() _NOEXCEPT = default; +#else + _LIBCPP_INLINE_VISIBILITY default_delete() {} +#endif + + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + default_delete(const default_delete<_Up[]>&, + typename _EnableIfConvertible<_Up>::type* = 0) _NOEXCEPT {} + + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + typename _EnableIfConvertible<_Up>::type + operator()(_Up* __ptr) const _NOEXCEPT { + static_assert(sizeof(_Tp) > 0, + "default_delete can not delete incomplete type"); + static_assert(!is_void<_Tp>::value, + "default_delete can not delete void type"); + delete[] __ptr; + } +}; + +template <class _Deleter> +struct __unique_ptr_deleter_sfinae { + static_assert(!is_reference<_Deleter>::value, "incorrect specialization"); + typedef const _Deleter& __lval_ref_type; + typedef _Deleter&& __good_rval_ref_type; + typedef true_type __enable_rval_overload; +}; + +template <class _Deleter> +struct __unique_ptr_deleter_sfinae<_Deleter const&> { + typedef const _Deleter& __lval_ref_type; + typedef const _Deleter&& __bad_rval_ref_type; + typedef false_type __enable_rval_overload; +}; + +template <class _Deleter> +struct __unique_ptr_deleter_sfinae<_Deleter&> { + typedef _Deleter& __lval_ref_type; + typedef _Deleter&& __bad_rval_ref_type; + typedef false_type __enable_rval_overload; +}; + +#if defined(_LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI) +# define _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI __attribute__((trivial_abi)) +#else +# define _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI +#endif + +template <class _Tp, class _Dp = default_delete<_Tp> > +class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr { +public: + typedef _Tp element_type; + typedef _Dp deleter_type; + typedef _LIBCPP_NODEBUG_TYPE typename __pointer<_Tp, deleter_type>::type pointer; + + static_assert(!is_rvalue_reference<deleter_type>::value, + "the specified deleter type cannot be an rvalue reference"); + +private: + __compressed_pair<pointer, deleter_type> __ptr_; + + struct __nat { int __for_bool_; }; + + typedef _LIBCPP_NODEBUG_TYPE __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; + + template <bool _Dummy> + using _LValRefType _LIBCPP_NODEBUG_TYPE = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; + + template <bool _Dummy> + using _GoodRValRefType _LIBCPP_NODEBUG_TYPE = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; + + template <bool _Dummy> + using _BadRValRefType _LIBCPP_NODEBUG_TYPE = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; + + template <bool _Dummy, class _Deleter = typename __dependent_type< + __identity<deleter_type>, _Dummy>::type> + using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG_TYPE = + typename enable_if<is_default_constructible<_Deleter>::value && + !is_pointer<_Deleter>::value>::type; + + template <class _ArgType> + using _EnableIfDeleterConstructible _LIBCPP_NODEBUG_TYPE = + typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; + + template <class _UPtr, class _Up> + using _EnableIfMoveConvertible _LIBCPP_NODEBUG_TYPE = typename enable_if< + is_convertible<typename _UPtr::pointer, pointer>::value && + !is_array<_Up>::value + >::type; + + template <class _UDel> + using _EnableIfDeleterConvertible _LIBCPP_NODEBUG_TYPE = typename enable_if< + (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || + (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) + >::type; + + template <class _UDel> + using _EnableIfDeleterAssignable = typename enable_if< + is_assignable<_Dp&, _UDel&&>::value + >::type; + +public: + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy> > + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT : __ptr_(pointer(), __default_init_tag()) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy> > + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(pointer(), __default_init_tag()) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy> > + _LIBCPP_INLINE_VISIBILITY + explicit unique_ptr(pointer __p) _NOEXCEPT : __ptr_(__p, __default_init_tag()) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, _LValRefType<_Dummy> __d) _NOEXCEPT + : __ptr_(__p, __d) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPT + : __ptr_(__p, _VSTD::move(__d)) { + static_assert(!is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); + } + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> > > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete; + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr&& __u) _NOEXCEPT + : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) { + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterConvertible<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT + : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(auto_ptr<_Up>&& __p, + typename enable_if<is_convertible<_Up*, _Tp*>::value && + is_same<_Dp, default_delete<_Tp> >::value, + __nat>::type = __nat()) _NOEXCEPT + : __ptr_(__p.release(), __default_init_tag()) {} +#endif + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); + return *this; + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterAssignable<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); + return *this; + } + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + typename enable_if<is_convertible<_Up*, _Tp*>::value && + is_same<_Dp, default_delete<_Tp> >::value, + unique_ptr&>::type + operator=(auto_ptr<_Up> __p) { + reset(__p.release()); + return *this; + } +#endif + +#ifdef _LIBCPP_CXX03_LANG + unique_ptr(unique_ptr const&) = delete; + unique_ptr& operator=(unique_ptr const&) = delete; +#endif + + + _LIBCPP_INLINE_VISIBILITY + ~unique_ptr() { reset(); } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(nullptr_t) _NOEXCEPT { + reset(); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + typename add_lvalue_reference<_Tp>::type + operator*() const { + return *__ptr_.first(); + } + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const _NOEXCEPT { + return __ptr_.first(); + } + _LIBCPP_INLINE_VISIBILITY + pointer get() const _NOEXCEPT { + return __ptr_.first(); + } + _LIBCPP_INLINE_VISIBILITY + deleter_type& get_deleter() _NOEXCEPT { + return __ptr_.second(); + } + _LIBCPP_INLINE_VISIBILITY + const deleter_type& get_deleter() const _NOEXCEPT { + return __ptr_.second(); + } + _LIBCPP_INLINE_VISIBILITY + explicit operator bool() const _NOEXCEPT { + return __ptr_.first() != nullptr; + } + + _LIBCPP_INLINE_VISIBILITY + pointer release() _NOEXCEPT { + pointer __t = __ptr_.first(); + __ptr_.first() = pointer(); + return __t; + } + + _LIBCPP_INLINE_VISIBILITY + void reset(pointer __p = pointer()) _NOEXCEPT { + pointer __tmp = __ptr_.first(); + __ptr_.first() = __p; + if (__tmp) + __ptr_.second()(__tmp); + } + + _LIBCPP_INLINE_VISIBILITY + void swap(unique_ptr& __u) _NOEXCEPT { + __ptr_.swap(__u.__ptr_); + } +}; + + +template <class _Tp, class _Dp> +class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> { +public: + typedef _Tp element_type; + typedef _Dp deleter_type; + typedef typename __pointer<_Tp, deleter_type>::type pointer; + +private: + __compressed_pair<pointer, deleter_type> __ptr_; + + template <class _From> + struct _CheckArrayPointerConversion : is_same<_From, pointer> {}; + + template <class _FromElem> + struct _CheckArrayPointerConversion<_FromElem*> + : integral_constant<bool, + is_same<_FromElem*, pointer>::value || + (is_same<pointer, element_type*>::value && + is_convertible<_FromElem(*)[], element_type(*)[]>::value) + > + {}; + + typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; + + template <bool _Dummy> + using _LValRefType _LIBCPP_NODEBUG_TYPE = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; + + template <bool _Dummy> + using _GoodRValRefType _LIBCPP_NODEBUG_TYPE = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; + + template <bool _Dummy> + using _BadRValRefType _LIBCPP_NODEBUG_TYPE = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; + + template <bool _Dummy, class _Deleter = typename __dependent_type< + __identity<deleter_type>, _Dummy>::type> + using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG_TYPE = + typename enable_if<is_default_constructible<_Deleter>::value && + !is_pointer<_Deleter>::value>::type; + + template <class _ArgType> + using _EnableIfDeleterConstructible _LIBCPP_NODEBUG_TYPE = + typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; + + template <class _Pp> + using _EnableIfPointerConvertible _LIBCPP_NODEBUG_TYPE = typename enable_if< + _CheckArrayPointerConversion<_Pp>::value + >::type; + + template <class _UPtr, class _Up, + class _ElemT = typename _UPtr::element_type> + using _EnableIfMoveConvertible _LIBCPP_NODEBUG_TYPE = typename enable_if< + is_array<_Up>::value && + is_same<pointer, element_type*>::value && + is_same<typename _UPtr::pointer, _ElemT*>::value && + is_convertible<_ElemT(*)[], element_type(*)[]>::value + >::type; + + template <class _UDel> + using _EnableIfDeleterConvertible _LIBCPP_NODEBUG_TYPE = typename enable_if< + (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || + (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) + >::type; + + template <class _UDel> + using _EnableIfDeleterAssignable _LIBCPP_NODEBUG_TYPE = typename enable_if< + is_assignable<_Dp&, _UDel&&>::value + >::type; + +public: + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy> > + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT : __ptr_(pointer(), __default_init_tag()) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy> > + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(pointer(), __default_init_tag()) {} + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy>, + class = _EnableIfPointerConvertible<_Pp> > + _LIBCPP_INLINE_VISIBILITY + explicit unique_ptr(_Pp __p) _NOEXCEPT + : __ptr_(__p, __default_init_tag()) {} + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> >, + class = _EnableIfPointerConvertible<_Pp> > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(_Pp __p, _LValRefType<_Dummy> __d) _NOEXCEPT + : __ptr_(__p, __d) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(nullptr_t, _LValRefType<_Dummy> __d) _NOEXCEPT + : __ptr_(nullptr, __d) {} + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> >, + class = _EnableIfPointerConvertible<_Pp> > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(_Pp __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPT + : __ptr_(__p, _VSTD::move(__d)) { + static_assert(!is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); + } + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(nullptr_t, _GoodRValRefType<_Dummy> __d) _NOEXCEPT + : __ptr_(nullptr, _VSTD::move(__d)) { + static_assert(!is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); + } + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> >, + class = _EnableIfPointerConvertible<_Pp> > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(_Pp __p, _BadRValRefType<_Dummy> __d) = delete; + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr&& __u) _NOEXCEPT + : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) { + } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); + return *this; + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterConvertible<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT + : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) { + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterAssignable<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr& + operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); + return *this; + } + +#ifdef _LIBCPP_CXX03_LANG + unique_ptr(unique_ptr const&) = delete; + unique_ptr& operator=(unique_ptr const&) = delete; +#endif + +public: + _LIBCPP_INLINE_VISIBILITY + ~unique_ptr() { reset(); } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(nullptr_t) _NOEXCEPT { + reset(); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + typename add_lvalue_reference<_Tp>::type + operator[](size_t __i) const { + return __ptr_.first()[__i]; + } + _LIBCPP_INLINE_VISIBILITY + pointer get() const _NOEXCEPT { + return __ptr_.first(); + } + + _LIBCPP_INLINE_VISIBILITY + deleter_type& get_deleter() _NOEXCEPT { + return __ptr_.second(); + } + + _LIBCPP_INLINE_VISIBILITY + const deleter_type& get_deleter() const _NOEXCEPT { + return __ptr_.second(); + } + _LIBCPP_INLINE_VISIBILITY + explicit operator bool() const _NOEXCEPT { + return __ptr_.first() != nullptr; + } + + _LIBCPP_INLINE_VISIBILITY + pointer release() _NOEXCEPT { + pointer __t = __ptr_.first(); + __ptr_.first() = pointer(); + return __t; + } + + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + typename enable_if< + _CheckArrayPointerConversion<_Pp>::value + >::type + reset(_Pp __p) _NOEXCEPT { + pointer __tmp = __ptr_.first(); + __ptr_.first() = __p; + if (__tmp) + __ptr_.second()(__tmp); + } + + _LIBCPP_INLINE_VISIBILITY + void reset(nullptr_t = nullptr) _NOEXCEPT { + pointer __tmp = __ptr_.first(); + __ptr_.first() = nullptr; + if (__tmp) + __ptr_.second()(__tmp); + } + + _LIBCPP_INLINE_VISIBILITY + void swap(unique_ptr& __u) _NOEXCEPT { + __ptr_.swap(__u.__ptr_); + } + +}; + +template <class _Tp, class _Dp> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if< + __is_swappable<_Dp>::value, + void +>::type +swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) +{ + typedef typename unique_ptr<_T1, _D1>::pointer _P1; + typedef typename unique_ptr<_T2, _D2>::pointer _P2; + typedef typename common_type<_P1, _P2>::type _Vp; + return less<_Vp>()(__x.get(), __y.get()); +} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT +{ + return !__x; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT +{ + return !__x; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT +{ + return static_cast<bool>(__x); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT +{ + return static_cast<bool>(__x); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + typedef typename unique_ptr<_T1, _D1>::pointer _P1; + return less<_P1>()(__x.get(), nullptr); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + typedef typename unique_ptr<_T1, _D1>::pointer _P1; + return less<_P1>()(nullptr, __x.get()); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + return nullptr < __x; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + return __x < nullptr; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + return !(nullptr < __x); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + return !(__x < nullptr); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + return !(__x < nullptr); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + return !(nullptr < __x); +} + +#if _LIBCPP_STD_VER > 11 + +template<class _Tp> +struct __unique_if +{ + typedef unique_ptr<_Tp> __unique_single; +}; + +template<class _Tp> +struct __unique_if<_Tp[]> +{ + typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; +}; + +template<class _Tp, size_t _Np> +struct __unique_if<_Tp[_Np]> +{ + typedef void __unique_array_known_bound; +}; + +template<class _Tp, class... _Args> +inline _LIBCPP_INLINE_VISIBILITY +typename __unique_if<_Tp>::__unique_single +make_unique(_Args&&... __args) +{ + return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +typename __unique_if<_Tp>::__unique_array_unknown_bound +make_unique(size_t __n) +{ + typedef typename remove_extent<_Tp>::type _Up; + return unique_ptr<_Tp>(new _Up[__n]()); +} + +template<class _Tp, class... _Args> + typename __unique_if<_Tp>::__unique_array_known_bound + make_unique(_Args&&...) = delete; + +#endif // _LIBCPP_STD_VER > 11 + +template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash; + +template <class _Tp, class _Dp> +#ifdef _LIBCPP_CXX03_LANG +struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> > +#else +struct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper< + unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer> > +#endif +{ +#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) + _LIBCPP_DEPRECATED_IN_CXX17 typedef unique_ptr<_Tp, _Dp> argument_type; + _LIBCPP_DEPRECATED_IN_CXX17 typedef size_t result_type; +#endif + + _LIBCPP_INLINE_VISIBILITY + size_t operator()(const unique_ptr<_Tp, _Dp>& __ptr) const + { + typedef typename unique_ptr<_Tp, _Dp>::pointer pointer; + return hash<pointer>()(__ptr.get()); + } +}; + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___MEMORY_UNIQUE_PTR_H |