llvm-project/libcxx/include/scoped_allocator

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

695 lines
26 KiB
Plaintext
Raw Normal View History

2010-08-20 02:39:17 +08:00
// -*- C++ -*-
//===-------------------------- scoped_allocator --------------------------===//
//
// 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
2010-08-20 02:39:17 +08:00
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_SCOPED_ALLOCATOR
#define _LIBCPP_SCOPED_ALLOCATOR
/*
scoped_allocator synopsis
namespace std
{
template <class OuterAlloc, class... InnerAllocs>
class scoped_allocator_adaptor : public OuterAlloc
{
typedef allocator_traits<OuterAlloc> OuterTraits; // exposition only
scoped_allocator_adaptor<InnerAllocs...> inner; // exposition only
2010-08-20 02:39:17 +08:00
public:
typedef OuterAlloc outer_allocator_type;
typedef see below inner_allocator_type;
typedef typename OuterTraits::value_type value_type;
typedef typename OuterTraits::size_type size_type;
typedef typename OuterTraits::difference_type difference_type;
typedef typename OuterTraits::pointer pointer;
typedef typename OuterTraits::const_pointer const_pointer;
typedef typename OuterTraits::void_pointer void_pointer;
typedef typename OuterTraits::const_void_pointer const_void_pointer;
typedef see below propagate_on_container_copy_assignment;
typedef see below propagate_on_container_move_assignment;
typedef see below propagate_on_container_swap;
typedef see below is_always_equal;
2010-08-20 02:39:17 +08:00
template <class Tp>
struct rebind
{
typedef scoped_allocator_adaptor<
OuterTraits::template rebind_alloc<Tp>, InnerAllocs...> other;
};
scoped_allocator_adaptor();
template <class OuterA2>
scoped_allocator_adaptor(OuterA2&& outerAlloc,
const InnerAllocs&... innerAllocs) noexcept;
scoped_allocator_adaptor(const scoped_allocator_adaptor& other) noexcept;
scoped_allocator_adaptor(scoped_allocator_adaptor&& other) noexcept;
2010-08-20 02:39:17 +08:00
template <class OuterA2>
scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& other) noexcept;
2010-08-20 02:39:17 +08:00
template <class OuterA2>
scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2, InnerAllocs...>&& other) noexcept;
2010-08-20 02:39:17 +08:00
scoped_allocator_adaptor& operator=(const scoped_allocator_adaptor&) = default;
scoped_allocator_adaptor& operator=(scoped_allocator_adaptor&&) = default;
2010-08-20 02:39:17 +08:00
~scoped_allocator_adaptor();
inner_allocator_type& inner_allocator() noexcept;
const inner_allocator_type& inner_allocator() const noexcept;
2010-08-20 02:39:17 +08:00
outer_allocator_type& outer_allocator() noexcept;
const outer_allocator_type& outer_allocator() const noexcept;
2010-08-20 02:39:17 +08:00
pointer allocate(size_type n); // [[nodiscard]] in C++20
pointer allocate(size_type n, const_void_pointer hint); // [[nodiscard]] in C++20
void deallocate(pointer p, size_type n) noexcept;
2010-08-20 02:39:17 +08:00
size_type max_size() const;
template <class T, class... Args> void construct(T* p, Args&& args);
template <class T1, class T2, class... Args1, class... Args2>
void construct(pair<T1, T2>* p, piecewise_construct t, tuple<Args1...> x,
tuple<Args2...> y);
template <class T1, class T2>
void construct(pair<T1, T2>* p);
template <class T1, class T2, class U, class V>
void construct(pair<T1, T2>* p, U&& x, V&& y);
template <class T1, class T2, class U, class V>
void construct(pair<T1, T2>* p, const pair<U, V>& x);
template <class T1, class T2, class U, class V>
void construct(pair<T1, T2>* p, pair<U, V>&& x);
template <class T> void destroy(T* p);
template <class T> void destroy(T* p) noexcept;
scoped_allocator_adaptor select_on_container_copy_construction() const noexcept;
2010-08-20 02:39:17 +08:00
};
[libc++] P0433R2: add the remaining deduction guides. Add deduction guides to `valarray` and `scoped_allocator_adaptor`. This largely finishes implementation of the paper: * deduction guides for other classes mentioned in the paper were implemented previously (see the list below); * deduction guides for several classes contained in the proposal (`reference_wrapper`, `lock_guard`, `scoped_lock`, `unique_lock`, `shared_lock`) were removed by [LWG2981](https://wg21.link/LWG2981). Also add deduction guides to the synopsis for the few classes (e.g. `pair`) where they were missing. The only part of the paper that isn't fully implemented after this patch is making sure certain deduction guides don't participate in overload resolution when given incorrect template parameters. List of significant commits implementing the other parts of P0433 (omitting some minor fixes): * [pair](https://github.com/llvm/llvm-project/commit/af65856eec160d163c764faad250d93357be7c83) * [basic_string](https://github.com/llvm/llvm-project/commit/6d9f750dec29e8ae5366092e64cd343dae2c7464) * [array](https://github.com/llvm/llvm-project/commit/0ca8c0895c6034615593c295dd955f29b25bf3d4) * [deque](https://github.com/llvm/llvm-project/commit/dbb6f8a8179b0604e25707b5c1b72be6164f62d9) * [forward_list](https://github.com/llvm/llvm-project/commit/e076700b7786959206acef136ecf05d54078e4e1) * [list](https://github.com/llvm/llvm-project/commit/4a227e582b2f13880ea049b29988a37a0f7c0742) * [vector](https://github.com/llvm/llvm-project/commit/df8f75479278d5ce16eede342ceb5ba2fd71460b) * [queue/stack/priority_queue](https://github.com/llvm/llvm-project/commit/5b8b8b5dce587f1e5a4a31cc24f09b18bd53ff9a) * [basic_regex](https://github.com/llvm/llvm-project/commit/edd5e29cfe9f67ec8e7e0eda12eb05e616fdeebc) * [optional](https://github.com/llvm/llvm-project/commit/f35b4bc3954f3b01051fc0848535ff784809e9e2) * [map/multimap](https://github.com/llvm/llvm-project/commit/edfe8525de1f7278f4754f2bffd47b13ec291a17) * [set/multiset](https://github.com/llvm/llvm-project/commit/e20865c387e09ea0ebd5add15c762cd5271ff65f) * [unordered_set/unordered_multiset](https://github.com/llvm/llvm-project/commit/296a80102a9b72c3eda80558fb78a3ed8849b341) * [unordered_map/unordered_multimap](https://github.com/llvm/llvm-project/commit/dfcd4384cbcac0eeb7e5cbce350f875ba4da79d5) * [function](https://github.com/llvm/llvm-project/commit/e1eabcdfad89f67ae575b0c86aa4a72d277378b4) * [tuple](https://github.com/llvm/llvm-project/commit/1308011e1b5c5382281a63dd4191a1784f8d2295) * [shared_ptr/weak_ptr](https://github.com/llvm/llvm-project/commit/83564056d4b186c9fcf016cdbb388755009f7b5a) Additional notes: * It was revision 2 of the paper that was voted into the Standard. P0433R3 is a separate paper that is not part of the Standard. * The paper also mandates removing several `make_*_searcher` functions (e.g. `make_boyer_moore_searcher`) which are currently not implemented (except in `experimental/`). * The `__cpp_lib_deduction_guides` feature test macro from the paper was accidentally omitted from the Standard. Differential Revision: https://reviews.llvm.org/D112510
2021-10-28 15:36:19 +08:00
template<class OuterAlloc, class... InnerAllocs>
scoped_allocator_adaptor(OuterAlloc, InnerAllocs...)
-> scoped_allocator_adaptor<OuterAlloc, InnerAllocs...>;
2010-08-20 02:39:17 +08:00
template <class OuterA1, class OuterA2, class... InnerAllocs>
bool
operator==(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a,
const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b) noexcept;
2010-08-20 02:39:17 +08:00
template <class OuterA1, class OuterA2, class... InnerAllocs>
bool
operator!=(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a,
const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b) noexcept;
2010-08-20 02:39:17 +08:00
} // std
*/
#include <__config>
#include <__utility/forward.h>
2010-08-20 02:39:17 +08:00
#include <memory>
#include <version>
2010-08-20 02:39:17 +08:00
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
2010-08-20 02:39:17 +08:00
#pragma GCC system_header
#endif
2010-08-20 02:39:17 +08:00
_LIBCPP_BEGIN_NAMESPACE_STD
#if !defined(_LIBCPP_CXX03_LANG)
2010-08-20 02:39:17 +08:00
// scoped_allocator_adaptor
template <class ..._Allocs>
class scoped_allocator_adaptor;
template <class ..._Allocs> struct __get_poc_copy_assignment;
template <class _A0>
struct __get_poc_copy_assignment<_A0>
{
static const bool value = allocator_traits<_A0>::
propagate_on_container_copy_assignment::value;
};
template <class _A0, class ..._Allocs>
struct __get_poc_copy_assignment<_A0, _Allocs...>
{
static const bool value =
allocator_traits<_A0>::propagate_on_container_copy_assignment::value ||
__get_poc_copy_assignment<_Allocs...>::value;
};
template <class ..._Allocs> struct __get_poc_move_assignment;
template <class _A0>
struct __get_poc_move_assignment<_A0>
{
static const bool value = allocator_traits<_A0>::
propagate_on_container_move_assignment::value;
};
template <class _A0, class ..._Allocs>
struct __get_poc_move_assignment<_A0, _Allocs...>
{
static const bool value =
allocator_traits<_A0>::propagate_on_container_move_assignment::value ||
__get_poc_move_assignment<_Allocs...>::value;
};
template <class ..._Allocs> struct __get_poc_swap;
template <class _A0>
struct __get_poc_swap<_A0>
{
static const bool value = allocator_traits<_A0>::
propagate_on_container_swap::value;
};
template <class _A0, class ..._Allocs>
struct __get_poc_swap<_A0, _Allocs...>
{
static const bool value =
allocator_traits<_A0>::propagate_on_container_swap::value ||
__get_poc_swap<_Allocs...>::value;
};
template <class ..._Allocs> struct __get_is_always_equal;
template <class _A0>
struct __get_is_always_equal<_A0>
{
static const bool value = allocator_traits<_A0>::is_always_equal::value;
};
template <class _A0, class ..._Allocs>
struct __get_is_always_equal<_A0, _Allocs...>
{
static const bool value =
allocator_traits<_A0>::is_always_equal::value &&
__get_is_always_equal<_Allocs...>::value;
};
2010-08-20 02:39:17 +08:00
template <class ..._Allocs>
class __scoped_allocator_storage;
template <class _OuterAlloc, class... _InnerAllocs>
class __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...>
: public _OuterAlloc
{
typedef _OuterAlloc outer_allocator_type;
protected:
typedef scoped_allocator_adaptor<_InnerAllocs...> inner_allocator_type;
private:
inner_allocator_type __inner_;
protected:
_LIBCPP_INLINE_VISIBILITY
__scoped_allocator_storage() _NOEXCEPT {}
2010-08-20 02:39:17 +08:00
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
__scoped_allocator_storage(_OuterA2&& __outerAlloc,
const _InnerAllocs& ...__innerAllocs) _NOEXCEPT
: outer_allocator_type(_VSTD::forward<_OuterA2>(__outerAlloc)),
2010-08-20 02:39:17 +08:00
__inner_(__innerAllocs...) {}
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, const _OuterA2&>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
__scoped_allocator_storage(
const __scoped_allocator_storage<_OuterA2, _InnerAllocs...>& __other) _NOEXCEPT
2010-08-20 02:39:17 +08:00
: outer_allocator_type(__other.outer_allocator()),
__inner_(__other.inner_allocator()) {}
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
__scoped_allocator_storage(
__scoped_allocator_storage<_OuterA2, _InnerAllocs...>&& __other) _NOEXCEPT
: outer_allocator_type(_VSTD::move(__other.outer_allocator())),
__inner_(_VSTD::move(__other.inner_allocator())) {}
2010-08-20 02:39:17 +08:00
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
__scoped_allocator_storage(_OuterA2&& __o,
const inner_allocator_type& __i) _NOEXCEPT
: outer_allocator_type(_VSTD::forward<_OuterA2>(__o)),
__inner_(__i)
{
}
2010-08-20 02:39:17 +08:00
_LIBCPP_INLINE_VISIBILITY
inner_allocator_type& inner_allocator() _NOEXCEPT {return __inner_;}
_LIBCPP_INLINE_VISIBILITY
const inner_allocator_type& inner_allocator() const _NOEXCEPT {return __inner_;}
2010-08-20 02:39:17 +08:00
_LIBCPP_INLINE_VISIBILITY
outer_allocator_type& outer_allocator() _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return static_cast<outer_allocator_type&>(*this);}
_LIBCPP_INLINE_VISIBILITY
const outer_allocator_type& outer_allocator() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return static_cast<const outer_allocator_type&>(*this);}
scoped_allocator_adaptor<outer_allocator_type, _InnerAllocs...>
_LIBCPP_INLINE_VISIBILITY
select_on_container_copy_construction() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{
return scoped_allocator_adaptor<outer_allocator_type, _InnerAllocs...>
(
allocator_traits<outer_allocator_type>::
select_on_container_copy_construction(outer_allocator()),
allocator_traits<inner_allocator_type>::
select_on_container_copy_construction(inner_allocator())
);
}
template <class...> friend class __scoped_allocator_storage;
};
template <class _OuterAlloc>
class __scoped_allocator_storage<_OuterAlloc>
: public _OuterAlloc
{
typedef _OuterAlloc outer_allocator_type;
protected:
typedef scoped_allocator_adaptor<_OuterAlloc> inner_allocator_type;
_LIBCPP_INLINE_VISIBILITY
__scoped_allocator_storage() _NOEXCEPT {}
2010-08-20 02:39:17 +08:00
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
__scoped_allocator_storage(_OuterA2&& __outerAlloc) _NOEXCEPT
: outer_allocator_type(_VSTD::forward<_OuterA2>(__outerAlloc)) {}
2010-08-20 02:39:17 +08:00
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, const _OuterA2&>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
__scoped_allocator_storage(
const __scoped_allocator_storage<_OuterA2>& __other) _NOEXCEPT
2010-08-20 02:39:17 +08:00
: outer_allocator_type(__other.outer_allocator()) {}
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
__scoped_allocator_storage(
__scoped_allocator_storage<_OuterA2>&& __other) _NOEXCEPT
: outer_allocator_type(_VSTD::move(__other.outer_allocator())) {}
2010-08-20 02:39:17 +08:00
_LIBCPP_INLINE_VISIBILITY
inner_allocator_type& inner_allocator() _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return static_cast<inner_allocator_type&>(*this);}
_LIBCPP_INLINE_VISIBILITY
const inner_allocator_type& inner_allocator() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return static_cast<const inner_allocator_type&>(*this);}
_LIBCPP_INLINE_VISIBILITY
outer_allocator_type& outer_allocator() _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return static_cast<outer_allocator_type&>(*this);}
_LIBCPP_INLINE_VISIBILITY
const outer_allocator_type& outer_allocator() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return static_cast<const outer_allocator_type&>(*this);}
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
scoped_allocator_adaptor<outer_allocator_type>
select_on_container_copy_construction() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return scoped_allocator_adaptor<outer_allocator_type>(
allocator_traits<outer_allocator_type>::
select_on_container_copy_construction(outer_allocator())
);}
__scoped_allocator_storage(const outer_allocator_type& __o,
const inner_allocator_type& __i) _NOEXCEPT;
2010-08-20 02:39:17 +08:00
template <class...> friend class __scoped_allocator_storage;
};
// __outermost
template <class _Alloc>
decltype(declval<_Alloc>().outer_allocator(), true_type())
__has_outer_allocator_test(_Alloc&& __a);
template <class _Alloc>
false_type
__has_outer_allocator_test(const volatile _Alloc& __a);
template <class _Alloc>
struct __has_outer_allocator
: public common_type
<
decltype(__has_outer_allocator_test(declval<_Alloc&>()))
>::type
{
};
template <class _Alloc, bool = __has_outer_allocator<_Alloc>::value>
struct __outermost
{
typedef _Alloc type;
_LIBCPP_INLINE_VISIBILITY
type& operator()(type& __a) const _NOEXCEPT {return __a;}
2010-08-20 02:39:17 +08:00
};
template <class _Alloc>
struct __outermost<_Alloc, true>
{
typedef typename remove_reference
<
decltype(declval<_Alloc>().outer_allocator())
2010-08-20 02:39:17 +08:00
>::type _OuterAlloc;
typedef typename __outermost<_OuterAlloc>::type type;
_LIBCPP_INLINE_VISIBILITY
type& operator()(_Alloc& __a) const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return __outermost<_OuterAlloc>()(__a.outer_allocator());}
};
template <class _OuterAlloc, class... _InnerAllocs>
class _LIBCPP_TEMPLATE_VIS scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs...>
2010-08-20 02:39:17 +08:00
: public __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...>
{
typedef __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...> base;
typedef allocator_traits<_OuterAlloc> _OuterTraits;
public:
typedef _OuterAlloc outer_allocator_type;
typedef typename base::inner_allocator_type inner_allocator_type;
typedef typename _OuterTraits::size_type size_type;
typedef typename _OuterTraits::difference_type difference_type;
typedef typename _OuterTraits::pointer pointer;
typedef typename _OuterTraits::const_pointer const_pointer;
typedef typename _OuterTraits::void_pointer void_pointer;
typedef typename _OuterTraits::const_void_pointer const_void_pointer;
typedef integral_constant
<
bool,
__get_poc_copy_assignment<outer_allocator_type,
_InnerAllocs...>::value
> propagate_on_container_copy_assignment;
typedef integral_constant
<
bool,
__get_poc_move_assignment<outer_allocator_type,
_InnerAllocs...>::value
> propagate_on_container_move_assignment;
typedef integral_constant
<
bool,
__get_poc_swap<outer_allocator_type, _InnerAllocs...>::value
> propagate_on_container_swap;
typedef integral_constant
<
bool,
__get_is_always_equal<outer_allocator_type, _InnerAllocs...>::value
> is_always_equal;
2010-08-20 02:39:17 +08:00
template <class _Tp>
struct rebind
{
typedef scoped_allocator_adaptor
<
typename _OuterTraits::template rebind_alloc<_Tp>, _InnerAllocs...
> other;
};
_LIBCPP_INLINE_VISIBILITY
scoped_allocator_adaptor() _NOEXCEPT {}
2010-08-20 02:39:17 +08:00
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
scoped_allocator_adaptor(_OuterA2&& __outerAlloc,
const _InnerAllocs& ...__innerAllocs) _NOEXCEPT
: base(_VSTD::forward<_OuterA2>(__outerAlloc), __innerAllocs...) {}
2010-08-20 02:39:17 +08:00
// scoped_allocator_adaptor(const scoped_allocator_adaptor& __other) = default;
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, const _OuterA2&>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
scoped_allocator_adaptor(
const scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>& __other) _NOEXCEPT
2010-08-20 02:39:17 +08:00
: base(__other) {}
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
scoped_allocator_adaptor(
scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>&& __other) _NOEXCEPT
: base(_VSTD::move(__other)) {}
2010-08-20 02:39:17 +08:00
// scoped_allocator_adaptor& operator=(const scoped_allocator_adaptor&) = default;
// scoped_allocator_adaptor& operator=(scoped_allocator_adaptor&&) = default;
2010-08-20 02:39:17 +08:00
// ~scoped_allocator_adaptor() = default;
_LIBCPP_INLINE_VISIBILITY
inner_allocator_type& inner_allocator() _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return base::inner_allocator();}
_LIBCPP_INLINE_VISIBILITY
const inner_allocator_type& inner_allocator() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return base::inner_allocator();}
_LIBCPP_INLINE_VISIBILITY
outer_allocator_type& outer_allocator() _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return base::outer_allocator();}
_LIBCPP_INLINE_VISIBILITY
const outer_allocator_type& outer_allocator() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return base::outer_allocator();}
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
pointer allocate(size_type __n)
{return allocator_traits<outer_allocator_type>::
allocate(outer_allocator(), __n);}
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
pointer allocate(size_type __n, const_void_pointer __hint)
{return allocator_traits<outer_allocator_type>::
allocate(outer_allocator(), __n, __hint);}
_LIBCPP_INLINE_VISIBILITY
void deallocate(pointer __p, size_type __n) _NOEXCEPT
2010-08-20 02:39:17 +08:00
{allocator_traits<outer_allocator_type>::
deallocate(outer_allocator(), __p, __n);}
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
size_type max_size() const
{return allocator_traits<outer_allocator_type>::max_size(outer_allocator());}
2010-08-20 02:39:17 +08:00
template <class _Tp, class... _Args>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
void construct(_Tp* __p, _Args&& ...__args)
{__construct(__uses_alloc_ctor<_Tp, inner_allocator_type&, _Args...>(),
__p, _VSTD::forward<_Args>(__args)...);}
template <class _T1, class _T2, class... _Args1, class... _Args2>
void construct(pair<_T1, _T2>* __p, piecewise_construct_t,
tuple<_Args1...> __x, tuple<_Args2...> __y)
{
typedef __outermost<outer_allocator_type> _OM;
allocator_traits<typename _OM::type>::construct(
_OM()(outer_allocator()), __p, piecewise_construct
, __transform_tuple(
typename __uses_alloc_ctor<
_T1, inner_allocator_type&, _Args1...
>::type()
, _VSTD::move(__x)
, typename __make_tuple_indices<sizeof...(_Args1)>::type{}
)
, __transform_tuple(
typename __uses_alloc_ctor<
_T2, inner_allocator_type&, _Args2...
>::type()
, _VSTD::move(__y)
, typename __make_tuple_indices<sizeof...(_Args2)>::type{}
)
);
}
template <class _T1, class _T2>
void construct(pair<_T1, _T2>* __p)
{ construct(__p, piecewise_construct, tuple<>{}, tuple<>{}); }
template <class _T1, class _T2, class _Up, class _Vp>
void construct(pair<_T1, _T2>* __p, _Up&& __x, _Vp&& __y) {
construct(__p, piecewise_construct,
_VSTD::forward_as_tuple(_VSTD::forward<_Up>(__x)),
_VSTD::forward_as_tuple(_VSTD::forward<_Vp>(__y)));
}
template <class _T1, class _T2, class _Up, class _Vp>
void construct(pair<_T1, _T2>* __p, const pair<_Up, _Vp>& __x) {
construct(__p, piecewise_construct,
_VSTD::forward_as_tuple(__x.first),
_VSTD::forward_as_tuple(__x.second));
}
template <class _T1, class _T2, class _Up, class _Vp>
void construct(pair<_T1, _T2>* __p, pair<_Up, _Vp>&& __x) {
construct(__p, piecewise_construct,
_VSTD::forward_as_tuple(_VSTD::forward<_Up>(__x.first)),
_VSTD::forward_as_tuple(_VSTD::forward<_Vp>(__x.second)));
}
2010-08-20 02:39:17 +08:00
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
void destroy(_Tp* __p)
{
typedef __outermost<outer_allocator_type> _OM;
allocator_traits<typename _OM::type>::
destroy(_OM()(outer_allocator()), __p);
}
_LIBCPP_INLINE_VISIBILITY
scoped_allocator_adaptor select_on_container_copy_construction() const _NOEXCEPT
2010-08-20 02:39:17 +08:00
{return base::select_on_container_copy_construction();}
private:
2010-08-20 02:39:17 +08:00
template <class _OuterA2,
class = typename enable_if<
is_constructible<outer_allocator_type, _OuterA2>::value
>::type>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
scoped_allocator_adaptor(_OuterA2&& __o,
const inner_allocator_type& __i) _NOEXCEPT
: base(_VSTD::forward<_OuterA2>(__o), __i) {}
2010-08-20 02:39:17 +08:00
template <class _Tp, class... _Args>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
void __construct(integral_constant<int, 0>, _Tp* __p, _Args&& ...__args)
{
typedef __outermost<outer_allocator_type> _OM;
allocator_traits<typename _OM::type>::construct
(
_OM()(outer_allocator()),
__p,
_VSTD::forward<_Args>(__args)...
2010-08-20 02:39:17 +08:00
);
}
template <class _Tp, class... _Args>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
void __construct(integral_constant<int, 1>, _Tp* __p, _Args&& ...__args)
{
typedef __outermost<outer_allocator_type> _OM;
allocator_traits<typename _OM::type>::construct
(
_OM()(outer_allocator()),
__p, allocator_arg, inner_allocator(),
_VSTD::forward<_Args>(__args)...
2010-08-20 02:39:17 +08:00
);
}
template <class _Tp, class... _Args>
_LIBCPP_INLINE_VISIBILITY
2010-08-20 02:39:17 +08:00
void __construct(integral_constant<int, 2>, _Tp* __p, _Args&& ...__args)
{
typedef __outermost<outer_allocator_type> _OM;
allocator_traits<typename _OM::type>::construct
(
_OM()(outer_allocator()),
__p,
_VSTD::forward<_Args>(__args)...,
2010-08-20 02:39:17 +08:00
inner_allocator()
);
}
template <class ..._Args, size_t ..._Idx>
_LIBCPP_INLINE_VISIBILITY
tuple<_Args&&...>
__transform_tuple(integral_constant<int, 0>, tuple<_Args...>&& __t,
__tuple_indices<_Idx...>)
{
return _VSTD::forward_as_tuple(_VSTD::get<_Idx>(_VSTD::move(__t))...);
}
template <class ..._Args, size_t ..._Idx>
_LIBCPP_INLINE_VISIBILITY
tuple<allocator_arg_t, inner_allocator_type&, _Args&&...>
__transform_tuple(integral_constant<int, 1>, tuple<_Args...> && __t,
__tuple_indices<_Idx...>)
{
using _Tup = tuple<allocator_arg_t, inner_allocator_type&, _Args&&...>;
return _Tup(allocator_arg, inner_allocator(),
_VSTD::get<_Idx>(_VSTD::move(__t))...);
}
template <class ..._Args, size_t ..._Idx>
_LIBCPP_INLINE_VISIBILITY
tuple<_Args&&..., inner_allocator_type&>
__transform_tuple(integral_constant<int, 2>, tuple<_Args...> && __t,
__tuple_indices<_Idx...>)
{
using _Tup = tuple<_Args&&..., inner_allocator_type&>;
return _Tup(_VSTD::get<_Idx>(_VSTD::move(__t))..., inner_allocator());
}
2010-08-20 02:39:17 +08:00
template <class...> friend class __scoped_allocator_storage;
};
[libc++] P0433R2: add the remaining deduction guides. Add deduction guides to `valarray` and `scoped_allocator_adaptor`. This largely finishes implementation of the paper: * deduction guides for other classes mentioned in the paper were implemented previously (see the list below); * deduction guides for several classes contained in the proposal (`reference_wrapper`, `lock_guard`, `scoped_lock`, `unique_lock`, `shared_lock`) were removed by [LWG2981](https://wg21.link/LWG2981). Also add deduction guides to the synopsis for the few classes (e.g. `pair`) where they were missing. The only part of the paper that isn't fully implemented after this patch is making sure certain deduction guides don't participate in overload resolution when given incorrect template parameters. List of significant commits implementing the other parts of P0433 (omitting some minor fixes): * [pair](https://github.com/llvm/llvm-project/commit/af65856eec160d163c764faad250d93357be7c83) * [basic_string](https://github.com/llvm/llvm-project/commit/6d9f750dec29e8ae5366092e64cd343dae2c7464) * [array](https://github.com/llvm/llvm-project/commit/0ca8c0895c6034615593c295dd955f29b25bf3d4) * [deque](https://github.com/llvm/llvm-project/commit/dbb6f8a8179b0604e25707b5c1b72be6164f62d9) * [forward_list](https://github.com/llvm/llvm-project/commit/e076700b7786959206acef136ecf05d54078e4e1) * [list](https://github.com/llvm/llvm-project/commit/4a227e582b2f13880ea049b29988a37a0f7c0742) * [vector](https://github.com/llvm/llvm-project/commit/df8f75479278d5ce16eede342ceb5ba2fd71460b) * [queue/stack/priority_queue](https://github.com/llvm/llvm-project/commit/5b8b8b5dce587f1e5a4a31cc24f09b18bd53ff9a) * [basic_regex](https://github.com/llvm/llvm-project/commit/edd5e29cfe9f67ec8e7e0eda12eb05e616fdeebc) * [optional](https://github.com/llvm/llvm-project/commit/f35b4bc3954f3b01051fc0848535ff784809e9e2) * [map/multimap](https://github.com/llvm/llvm-project/commit/edfe8525de1f7278f4754f2bffd47b13ec291a17) * [set/multiset](https://github.com/llvm/llvm-project/commit/e20865c387e09ea0ebd5add15c762cd5271ff65f) * [unordered_set/unordered_multiset](https://github.com/llvm/llvm-project/commit/296a80102a9b72c3eda80558fb78a3ed8849b341) * [unordered_map/unordered_multimap](https://github.com/llvm/llvm-project/commit/dfcd4384cbcac0eeb7e5cbce350f875ba4da79d5) * [function](https://github.com/llvm/llvm-project/commit/e1eabcdfad89f67ae575b0c86aa4a72d277378b4) * [tuple](https://github.com/llvm/llvm-project/commit/1308011e1b5c5382281a63dd4191a1784f8d2295) * [shared_ptr/weak_ptr](https://github.com/llvm/llvm-project/commit/83564056d4b186c9fcf016cdbb388755009f7b5a) Additional notes: * It was revision 2 of the paper that was voted into the Standard. P0433R3 is a separate paper that is not part of the Standard. * The paper also mandates removing several `make_*_searcher` functions (e.g. `make_boyer_moore_searcher`) which are currently not implemented (except in `experimental/`). * The `__cpp_lib_deduction_guides` feature test macro from the paper was accidentally omitted from the Standard. Differential Revision: https://reviews.llvm.org/D112510
2021-10-28 15:36:19 +08:00
#if _LIBCPP_STD_VER > 14
template<class _OuterAlloc, class... _InnerAllocs>
scoped_allocator_adaptor(_OuterAlloc, _InnerAllocs...)
-> scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs...>;
#endif
2010-08-20 02:39:17 +08:00
template <class _OuterA1, class _OuterA2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const scoped_allocator_adaptor<_OuterA1>& __a,
const scoped_allocator_adaptor<_OuterA2>& __b) _NOEXCEPT
2010-08-20 02:39:17 +08:00
{
return __a.outer_allocator() == __b.outer_allocator();
}
template <class _OuterA1, class _OuterA2, class _InnerA0, class... _InnerAllocs>
2010-08-20 02:39:17 +08:00
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const scoped_allocator_adaptor<_OuterA1, _InnerA0, _InnerAllocs...>& __a,
const scoped_allocator_adaptor<_OuterA2, _InnerA0, _InnerAllocs...>& __b) _NOEXCEPT
2010-08-20 02:39:17 +08:00
{
return __a.outer_allocator() == __b.outer_allocator() &&
__a.inner_allocator() == __b.inner_allocator();
}
template <class _OuterA1, class _OuterA2, class... _InnerAllocs>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const scoped_allocator_adaptor<_OuterA1, _InnerAllocs...>& __a,
const scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>& __b) _NOEXCEPT
2010-08-20 02:39:17 +08:00
{
return !(__a == __b);
}
#endif // !defined(_LIBCPP_CXX03_LANG)
2010-08-20 02:39:17 +08:00
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_SCOPED_ALLOCATOR