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|
// -*- 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 <stlfwd>
#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_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>
class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr {
public:
typedef _Tp element_type;
typedef _Dp deleter_type;
typedef _LIBCPP_NODEBUG 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 __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE;
template <bool _Dummy>
using _LValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
template <bool _Dummy>
using _GoodRValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
template <bool _Dummy>
using _BadRValRefType _LIBCPP_NODEBUG =
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 =
typename enable_if<is_default_constructible<_Deleter>::value &&
!is_pointer<_Deleter>::value>::type;
template <class _ArgType>
using _EnableIfDeleterConstructible _LIBCPP_NODEBUG =
typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
template <class _UPtr, class _Up>
using _EnableIfMoveConvertible _LIBCPP_NODEBUG = typename enable_if<
is_convertible<typename _UPtr::pointer, pointer>::value &&
!is_array<_Up>::value
>::type;
template <class _UDel>
using _EnableIfDeleterConvertible _LIBCPP_NODEBUG = 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_(__value_init_tag(), __value_init_tag()) {}
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(__value_init_tag(), __value_init_tag()) {}
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
explicit unique_ptr(pointer __p) _NOEXCEPT : __ptr_(__p, __value_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(), __value_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 =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
template <bool _Dummy>
using _GoodRValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
template <bool _Dummy>
using _BadRValRefType _LIBCPP_NODEBUG =
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 =
typename enable_if<is_default_constructible<_Deleter>::value &&
!is_pointer<_Deleter>::value>::type;
template <class _ArgType>
using _EnableIfDeleterConstructible _LIBCPP_NODEBUG =
typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
template <class _Pp>
using _EnableIfPointerConvertible _LIBCPP_NODEBUG = typename enable_if<
_CheckArrayPointerConversion<_Pp>::value
>::type;
template <class _UPtr, class _Up,
class _ElemT = typename _UPtr::element_type>
using _EnableIfMoveConvertible _LIBCPP_NODEBUG = 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 = 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 = 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_(__value_init_tag(), __value_init_tag()) {}
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(__value_init_tag(), __value_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, __value_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
#endif // _LIBCPP___MEMORY_UNIQUE_PTR_H
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