92e4d6791f
POSIX allows certain macros to exist with generic names (i.e. refresh(), move(), and erase()) to exist in `curses.h` which conflict with functions found in std::filesystem, among others. This patch undefs the macros in question and adds them to LIBCPP_PUSH_MACROS and LIBCPP_POP_MACROS. Reviewed By: #libc, philnik, ldionne Differential Revision: https://reviews.llvm.org/D147356
260 lines
7.7 KiB
C++
260 lines
7.7 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___NODE_HANDLE
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#define _LIBCPP___NODE_HANDLE
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/*
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template<unspecified>
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class node-handle {
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public:
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using value_type = see below; // not present for map containers
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using key_type = see below; // not present for set containers
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using mapped_type = see below; // not present for set containers
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using allocator_type = see below;
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private:
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using container_node_type = unspecified; // exposition only
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using ator_traits = allocator_traits<allocator_type>; // exposition only
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typename ator_traits::template
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rebind_traits<container_node_type>::pointer ptr_; // exposition only
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optional<allocator_type> alloc_; // exposition only
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public:
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// [container.node.cons], constructors, copy, and assignment
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constexpr node-handle() noexcept : ptr_(), alloc_() {}
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node-handle(node-handle&&) noexcept;
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node-handle& operator=(node-handle&&);
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// [container.node.dtor], destructor
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~node-handle();
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// [container.node.observers], observers
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value_type& value() const; // not present for map containers
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key_type& key() const; // not present for set containers
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mapped_type& mapped() const; // not present for set containers
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allocator_type get_allocator() const;
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explicit operator bool() const noexcept;
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[[nodiscard]] bool empty() const noexcept; // nodiscard since C++20
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// [container.node.modifiers], modifiers
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void swap(node-handle&)
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noexcept(ator_traits::propagate_on_container_swap::value ||
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ator_traits::is_always_equal::value);
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friend void swap(node-handle& x, node-handle& y) noexcept(noexcept(x.swap(y))) {
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x.swap(y);
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}
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};
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*/
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#include <__assert>
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#include <__config>
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#include <__memory/allocator_traits.h>
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#include <__memory/pointer_traits.h>
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#include <optional>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 17
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// Specialized in __tree & __hash_table for their _NodeType.
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template <class _NodeType, class _Alloc>
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struct __generic_container_node_destructor;
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template <class _NodeType, class _Alloc,
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template <class, class> class _MapOrSetSpecifics>
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class _LIBCPP_TEMPLATE_VIS __basic_node_handle
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: public _MapOrSetSpecifics<
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_NodeType,
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__basic_node_handle<_NodeType, _Alloc, _MapOrSetSpecifics>>
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{
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template <class _Tp, class _Compare, class _Allocator>
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friend class __tree;
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template <class _Tp, class _Hash, class _Equal, class _Allocator>
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friend class __hash_table;
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friend struct _MapOrSetSpecifics<
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_NodeType, __basic_node_handle<_NodeType, _Alloc, _MapOrSetSpecifics>>;
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typedef allocator_traits<_Alloc> __alloc_traits;
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typedef __rebind_pointer_t<typename __alloc_traits::void_pointer,
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_NodeType>
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__node_pointer_type;
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public:
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typedef _Alloc allocator_type;
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private:
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__node_pointer_type __ptr_ = nullptr;
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optional<allocator_type> __alloc_;
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_LIBCPP_INLINE_VISIBILITY
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void __release_ptr()
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{
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__ptr_ = nullptr;
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__alloc_ = _VSTD::nullopt;
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}
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_LIBCPP_INLINE_VISIBILITY
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void __destroy_node_pointer()
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{
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if (__ptr_ != nullptr)
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{
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typedef typename __allocator_traits_rebind<
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allocator_type, _NodeType>::type __node_alloc_type;
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__node_alloc_type __alloc(*__alloc_);
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__generic_container_node_destructor<_NodeType, __node_alloc_type>(
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__alloc, true)(__ptr_);
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__ptr_ = nullptr;
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}
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}
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_LIBCPP_INLINE_VISIBILITY
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__basic_node_handle(__node_pointer_type __ptr,
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allocator_type const& __alloc)
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: __ptr_(__ptr), __alloc_(__alloc)
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{
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}
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public:
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_LIBCPP_INLINE_VISIBILITY
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__basic_node_handle() = default;
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_LIBCPP_INLINE_VISIBILITY
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__basic_node_handle(__basic_node_handle&& __other) noexcept
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: __ptr_(__other.__ptr_),
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__alloc_(_VSTD::move(__other.__alloc_))
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{
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__other.__ptr_ = nullptr;
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__other.__alloc_ = _VSTD::nullopt;
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}
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_LIBCPP_INLINE_VISIBILITY
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__basic_node_handle& operator=(__basic_node_handle&& __other)
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{
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_LIBCPP_ASSERT_UNCATEGORIZED(
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__alloc_ == _VSTD::nullopt ||
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__alloc_traits::propagate_on_container_move_assignment::value ||
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__alloc_ == __other.__alloc_,
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"node_type with incompatible allocator passed to "
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"node_type::operator=(node_type&&)");
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__destroy_node_pointer();
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__ptr_ = __other.__ptr_;
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if (__alloc_traits::propagate_on_container_move_assignment::value ||
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__alloc_ == _VSTD::nullopt)
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__alloc_ = _VSTD::move(__other.__alloc_);
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__other.__ptr_ = nullptr;
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__other.__alloc_ = _VSTD::nullopt;
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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allocator_type get_allocator() const { return *__alloc_; }
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_LIBCPP_INLINE_VISIBILITY
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explicit operator bool() const { return __ptr_ != nullptr; }
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_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
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bool empty() const { return __ptr_ == nullptr; }
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_LIBCPP_INLINE_VISIBILITY
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void swap(__basic_node_handle& __other) noexcept(
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__alloc_traits::propagate_on_container_swap::value ||
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__alloc_traits::is_always_equal::value)
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{
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using _VSTD::swap;
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swap(__ptr_, __other.__ptr_);
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if (__alloc_traits::propagate_on_container_swap::value ||
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__alloc_ == _VSTD::nullopt || __other.__alloc_ == _VSTD::nullopt)
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swap(__alloc_, __other.__alloc_);
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}
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_LIBCPP_INLINE_VISIBILITY
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friend void swap(__basic_node_handle& __a, __basic_node_handle& __b)
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noexcept(noexcept(__a.swap(__b))) { __a.swap(__b); }
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_LIBCPP_INLINE_VISIBILITY
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~__basic_node_handle()
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{
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__destroy_node_pointer();
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}
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};
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template <class _NodeType, class _Derived>
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struct __set_node_handle_specifics
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{
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typedef typename _NodeType::__node_value_type value_type;
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_LIBCPP_INLINE_VISIBILITY
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value_type& value() const
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{
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return static_cast<_Derived const*>(this)->__ptr_->__value_;
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}
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};
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template <class _NodeType, class _Derived>
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struct __map_node_handle_specifics
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{
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typedef typename _NodeType::__node_value_type::key_type key_type;
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typedef typename _NodeType::__node_value_type::mapped_type mapped_type;
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_LIBCPP_INLINE_VISIBILITY
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key_type& key() const
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{
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return static_cast<_Derived const*>(this)->
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__ptr_->__value_.__ref().first;
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}
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_LIBCPP_INLINE_VISIBILITY
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mapped_type& mapped() const
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{
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return static_cast<_Derived const*>(this)->
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__ptr_->__value_.__ref().second;
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}
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};
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template <class _NodeType, class _Alloc>
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using __set_node_handle =
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__basic_node_handle< _NodeType, _Alloc, __set_node_handle_specifics>;
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template <class _NodeType, class _Alloc>
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using __map_node_handle =
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__basic_node_handle< _NodeType, _Alloc, __map_node_handle_specifics>;
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template <class _Iterator, class _NodeType>
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struct _LIBCPP_TEMPLATE_VIS __insert_return_type
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{
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_Iterator position;
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bool inserted;
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_NodeType node;
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};
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#endif // _LIBCPP_STD_VER >= 17
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_LIBCPP_END_NAMESPACE_STD
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___NODE_HANDLE
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