diff options
Diffstat (limited to 'lib/libcxx/include/__split_buffer')
| -rw-r--r-- | lib/libcxx/include/__split_buffer | 637 |
1 files changed, 0 insertions, 637 deletions
diff --git a/lib/libcxx/include/__split_buffer b/lib/libcxx/include/__split_buffer deleted file mode 100644 index 1daa4e5ada3..00000000000 --- a/lib/libcxx/include/__split_buffer +++ /dev/null @@ -1,637 +0,0 @@ -// -*- C++ -*- -#ifndef _LIBCPP_SPLIT_BUFFER -#define _LIBCPP_SPLIT_BUFFER - -#include <__config> -#include <type_traits> -#include <algorithm> - -#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) -#pragma GCC system_header -#endif - -_LIBCPP_PUSH_MACROS -#include <__undef_macros> - - -_LIBCPP_BEGIN_NAMESPACE_STD - -template <bool> -class __split_buffer_common -{ -protected: - void __throw_length_error() const; - void __throw_out_of_range() const; -}; - -template <class _Tp, class _Allocator = allocator<_Tp> > -struct __split_buffer - : private __split_buffer_common<true> -{ -private: - __split_buffer(const __split_buffer&); - __split_buffer& operator=(const __split_buffer&); -public: - typedef _Tp value_type; - typedef _Allocator allocator_type; - typedef typename remove_reference<allocator_type>::type __alloc_rr; - typedef allocator_traits<__alloc_rr> __alloc_traits; - typedef value_type& reference; - typedef const value_type& const_reference; - typedef typename __alloc_traits::size_type size_type; - typedef typename __alloc_traits::difference_type difference_type; - typedef typename __alloc_traits::pointer pointer; - typedef typename __alloc_traits::const_pointer const_pointer; - typedef pointer iterator; - typedef const_pointer const_iterator; - - pointer __first_; - pointer __begin_; - pointer __end_; - __compressed_pair<pointer, allocator_type> __end_cap_; - - typedef typename add_lvalue_reference<allocator_type>::type __alloc_ref; - typedef typename add_lvalue_reference<allocator_type>::type __alloc_const_ref; - - _LIBCPP_INLINE_VISIBILITY __alloc_rr& __alloc() _NOEXCEPT {return __end_cap_.second();} - _LIBCPP_INLINE_VISIBILITY const __alloc_rr& __alloc() const _NOEXCEPT {return __end_cap_.second();} - _LIBCPP_INLINE_VISIBILITY pointer& __end_cap() _NOEXCEPT {return __end_cap_.first();} - _LIBCPP_INLINE_VISIBILITY const pointer& __end_cap() const _NOEXCEPT {return __end_cap_.first();} - - _LIBCPP_INLINE_VISIBILITY - __split_buffer() - _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); - _LIBCPP_INLINE_VISIBILITY - explicit __split_buffer(__alloc_rr& __a); - _LIBCPP_INLINE_VISIBILITY - explicit __split_buffer(const __alloc_rr& __a); - __split_buffer(size_type __cap, size_type __start, __alloc_rr& __a); - ~__split_buffer(); - -#ifndef _LIBCPP_CXX03_LANG - __split_buffer(__split_buffer&& __c) - _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); - __split_buffer(__split_buffer&& __c, const __alloc_rr& __a); - __split_buffer& operator=(__split_buffer&& __c) - _NOEXCEPT_((__alloc_traits::propagate_on_container_move_assignment::value && - is_nothrow_move_assignable<allocator_type>::value) || - !__alloc_traits::propagate_on_container_move_assignment::value); -#endif // _LIBCPP_CXX03_LANG - - _LIBCPP_INLINE_VISIBILITY iterator begin() _NOEXCEPT {return __begin_;} - _LIBCPP_INLINE_VISIBILITY const_iterator begin() const _NOEXCEPT {return __begin_;} - _LIBCPP_INLINE_VISIBILITY iterator end() _NOEXCEPT {return __end_;} - _LIBCPP_INLINE_VISIBILITY const_iterator end() const _NOEXCEPT {return __end_;} - - _LIBCPP_INLINE_VISIBILITY - void clear() _NOEXCEPT - {__destruct_at_end(__begin_);} - _LIBCPP_INLINE_VISIBILITY size_type size() const {return static_cast<size_type>(__end_ - __begin_);} - _LIBCPP_INLINE_VISIBILITY bool empty() const {return __end_ == __begin_;} - _LIBCPP_INLINE_VISIBILITY size_type capacity() const {return static_cast<size_type>(__end_cap() - __first_);} - _LIBCPP_INLINE_VISIBILITY size_type __front_spare() const {return static_cast<size_type>(__begin_ - __first_);} - _LIBCPP_INLINE_VISIBILITY size_type __back_spare() const {return static_cast<size_type>(__end_cap() - __end_);} - - _LIBCPP_INLINE_VISIBILITY reference front() {return *__begin_;} - _LIBCPP_INLINE_VISIBILITY const_reference front() const {return *__begin_;} - _LIBCPP_INLINE_VISIBILITY reference back() {return *(__end_ - 1);} - _LIBCPP_INLINE_VISIBILITY const_reference back() const {return *(__end_ - 1);} - - void reserve(size_type __n); - void shrink_to_fit() _NOEXCEPT; - void push_front(const_reference __x); - _LIBCPP_INLINE_VISIBILITY void push_back(const_reference __x); -#ifndef _LIBCPP_CXX03_LANG - void push_front(value_type&& __x); - void push_back(value_type&& __x); - template <class... _Args> - void emplace_back(_Args&&... __args); -#endif // !defined(_LIBCPP_CXX03_LANG) - - _LIBCPP_INLINE_VISIBILITY void pop_front() {__destruct_at_begin(__begin_+1);} - _LIBCPP_INLINE_VISIBILITY void pop_back() {__destruct_at_end(__end_-1);} - - void __construct_at_end(size_type __n); - void __construct_at_end(size_type __n, const_reference __x); - template <class _InputIter> - typename enable_if - < - __is_input_iterator<_InputIter>::value && - !__is_forward_iterator<_InputIter>::value, - void - >::type - __construct_at_end(_InputIter __first, _InputIter __last); - template <class _ForwardIterator> - typename enable_if - < - __is_forward_iterator<_ForwardIterator>::value, - void - >::type - __construct_at_end(_ForwardIterator __first, _ForwardIterator __last); - - _LIBCPP_INLINE_VISIBILITY void __destruct_at_begin(pointer __new_begin) - {__destruct_at_begin(__new_begin, is_trivially_destructible<value_type>());} - _LIBCPP_INLINE_VISIBILITY - void __destruct_at_begin(pointer __new_begin, false_type); - _LIBCPP_INLINE_VISIBILITY - void __destruct_at_begin(pointer __new_begin, true_type); - - _LIBCPP_INLINE_VISIBILITY - void __destruct_at_end(pointer __new_last) _NOEXCEPT - {__destruct_at_end(__new_last, false_type());} - _LIBCPP_INLINE_VISIBILITY - void __destruct_at_end(pointer __new_last, false_type) _NOEXCEPT; - _LIBCPP_INLINE_VISIBILITY - void __destruct_at_end(pointer __new_last, true_type) _NOEXCEPT; - - void swap(__split_buffer& __x) - _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value|| - __is_nothrow_swappable<__alloc_rr>::value); - - bool __invariants() const; - -private: - _LIBCPP_INLINE_VISIBILITY - void __move_assign_alloc(__split_buffer& __c, true_type) - _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) - { - __alloc() = _VSTD::move(__c.__alloc()); - } - - _LIBCPP_INLINE_VISIBILITY - void __move_assign_alloc(__split_buffer&, false_type) _NOEXCEPT - {} -}; - -template <class _Tp, class _Allocator> -bool -__split_buffer<_Tp, _Allocator>::__invariants() const -{ - if (__first_ == nullptr) - { - if (__begin_ != nullptr) - return false; - if (__end_ != nullptr) - return false; - if (__end_cap() != nullptr) - return false; - } - else - { - if (__begin_ < __first_) - return false; - if (__end_ < __begin_) - return false; - if (__end_cap() < __end_) - return false; - } - return true; -} - -// Default constructs __n objects starting at __end_ -// throws if construction throws -// Precondition: __n > 0 -// Precondition: size() + __n <= capacity() -// Postcondition: size() == size() + __n -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::__construct_at_end(size_type __n) -{ - __alloc_rr& __a = this->__alloc(); - do - { - __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_)); - ++this->__end_; - --__n; - } while (__n > 0); -} - -// Copy constructs __n objects starting at __end_ from __x -// throws if construction throws -// Precondition: __n > 0 -// Precondition: size() + __n <= capacity() -// Postcondition: size() == old size() + __n -// Postcondition: [i] == __x for all i in [size() - __n, __n) -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::__construct_at_end(size_type __n, const_reference __x) -{ - __alloc_rr& __a = this->__alloc(); - do - { - __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_), __x); - ++this->__end_; - --__n; - } while (__n > 0); -} - -template <class _Tp, class _Allocator> -template <class _InputIter> -typename enable_if -< - __is_input_iterator<_InputIter>::value && - !__is_forward_iterator<_InputIter>::value, - void ->::type -__split_buffer<_Tp, _Allocator>::__construct_at_end(_InputIter __first, _InputIter __last) -{ - __alloc_rr& __a = this->__alloc(); - for (; __first != __last; ++__first) - { - if (__end_ == __end_cap()) - { - size_type __old_cap = __end_cap() - __first_; - size_type __new_cap = _VSTD::max<size_type>(2 * __old_cap, 8); - __split_buffer __buf(__new_cap, 0, __a); - for (pointer __p = __begin_; __p != __end_; ++__p, ++__buf.__end_) - __alloc_traits::construct(__buf.__alloc(), - _VSTD::__to_raw_pointer(__buf.__end_), _VSTD::move(*__p)); - swap(__buf); - } - __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_), *__first); - ++this->__end_; - } -} - -template <class _Tp, class _Allocator> -template <class _ForwardIterator> -typename enable_if -< - __is_forward_iterator<_ForwardIterator>::value, - void ->::type -__split_buffer<_Tp, _Allocator>::__construct_at_end(_ForwardIterator __first, _ForwardIterator __last) -{ - __alloc_rr& __a = this->__alloc(); - for (; __first != __last; ++__first) - { - __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_), *__first); - ++this->__end_; - } -} - -template <class _Tp, class _Allocator> -inline -void -__split_buffer<_Tp, _Allocator>::__destruct_at_begin(pointer __new_begin, false_type) -{ - while (__begin_ != __new_begin) - __alloc_traits::destroy(__alloc(), __to_raw_pointer(__begin_++)); -} - -template <class _Tp, class _Allocator> -inline -void -__split_buffer<_Tp, _Allocator>::__destruct_at_begin(pointer __new_begin, true_type) -{ - __begin_ = __new_begin; -} - -template <class _Tp, class _Allocator> -inline _LIBCPP_INLINE_VISIBILITY -void -__split_buffer<_Tp, _Allocator>::__destruct_at_end(pointer __new_last, false_type) _NOEXCEPT -{ - while (__new_last != __end_) - __alloc_traits::destroy(__alloc(), __to_raw_pointer(--__end_)); -} - -template <class _Tp, class _Allocator> -inline _LIBCPP_INLINE_VISIBILITY -void -__split_buffer<_Tp, _Allocator>::__destruct_at_end(pointer __new_last, true_type) _NOEXCEPT -{ - __end_ = __new_last; -} - -template <class _Tp, class _Allocator> -__split_buffer<_Tp, _Allocator>::__split_buffer(size_type __cap, size_type __start, __alloc_rr& __a) - : __end_cap_(nullptr, __a) -{ - __first_ = __cap != 0 ? __alloc_traits::allocate(__alloc(), __cap) : nullptr; - __begin_ = __end_ = __first_ + __start; - __end_cap() = __first_ + __cap; -} - -template <class _Tp, class _Allocator> -inline -__split_buffer<_Tp, _Allocator>::__split_buffer() - _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) - : __first_(nullptr), __begin_(nullptr), __end_(nullptr), __end_cap_(nullptr) -{ -} - -template <class _Tp, class _Allocator> -inline -__split_buffer<_Tp, _Allocator>::__split_buffer(__alloc_rr& __a) - : __first_(nullptr), __begin_(nullptr), __end_(nullptr), __end_cap_(nullptr, __a) -{ -} - -template <class _Tp, class _Allocator> -inline -__split_buffer<_Tp, _Allocator>::__split_buffer(const __alloc_rr& __a) - : __first_(nullptr), __begin_(nullptr), __end_(nullptr), __end_cap_(nullptr, __a) -{ -} - -template <class _Tp, class _Allocator> -__split_buffer<_Tp, _Allocator>::~__split_buffer() -{ - clear(); - if (__first_) - __alloc_traits::deallocate(__alloc(), __first_, capacity()); -} - -#ifndef _LIBCPP_CXX03_LANG - -template <class _Tp, class _Allocator> -__split_buffer<_Tp, _Allocator>::__split_buffer(__split_buffer&& __c) - _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) - : __first_(_VSTD::move(__c.__first_)), - __begin_(_VSTD::move(__c.__begin_)), - __end_(_VSTD::move(__c.__end_)), - __end_cap_(_VSTD::move(__c.__end_cap_)) -{ - __c.__first_ = nullptr; - __c.__begin_ = nullptr; - __c.__end_ = nullptr; - __c.__end_cap() = nullptr; -} - -template <class _Tp, class _Allocator> -__split_buffer<_Tp, _Allocator>::__split_buffer(__split_buffer&& __c, const __alloc_rr& __a) - : __end_cap_(__second_tag(), __a) -{ - if (__a == __c.__alloc()) - { - __first_ = __c.__first_; - __begin_ = __c.__begin_; - __end_ = __c.__end_; - __end_cap() = __c.__end_cap(); - __c.__first_ = nullptr; - __c.__begin_ = nullptr; - __c.__end_ = nullptr; - __c.__end_cap() = nullptr; - } - else - { - size_type __cap = __c.size(); - __first_ = __alloc_traits::allocate(__alloc(), __cap); - __begin_ = __end_ = __first_; - __end_cap() = __first_ + __cap; - typedef move_iterator<iterator> _Ip; - __construct_at_end(_Ip(__c.begin()), _Ip(__c.end())); - } -} - -template <class _Tp, class _Allocator> -__split_buffer<_Tp, _Allocator>& -__split_buffer<_Tp, _Allocator>::operator=(__split_buffer&& __c) - _NOEXCEPT_((__alloc_traits::propagate_on_container_move_assignment::value && - is_nothrow_move_assignable<allocator_type>::value) || - !__alloc_traits::propagate_on_container_move_assignment::value) -{ - clear(); - shrink_to_fit(); - __first_ = __c.__first_; - __begin_ = __c.__begin_; - __end_ = __c.__end_; - __end_cap() = __c.__end_cap(); - __move_assign_alloc(__c, - integral_constant<bool, - __alloc_traits::propagate_on_container_move_assignment::value>()); - __c.__first_ = __c.__begin_ = __c.__end_ = __c.__end_cap() = nullptr; - return *this; -} - -#endif // _LIBCPP_CXX03_LANG - -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::swap(__split_buffer& __x) - _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value|| - __is_nothrow_swappable<__alloc_rr>::value) -{ - _VSTD::swap(__first_, __x.__first_); - _VSTD::swap(__begin_, __x.__begin_); - _VSTD::swap(__end_, __x.__end_); - _VSTD::swap(__end_cap(), __x.__end_cap()); - __swap_allocator(__alloc(), __x.__alloc()); -} - -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::reserve(size_type __n) -{ - if (__n < capacity()) - { - __split_buffer<value_type, __alloc_rr&> __t(__n, 0, __alloc()); - __t.__construct_at_end(move_iterator<pointer>(__begin_), - move_iterator<pointer>(__end_)); - _VSTD::swap(__first_, __t.__first_); - _VSTD::swap(__begin_, __t.__begin_); - _VSTD::swap(__end_, __t.__end_); - _VSTD::swap(__end_cap(), __t.__end_cap()); - } -} - -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::shrink_to_fit() _NOEXCEPT -{ - if (capacity() > size()) - { -#ifndef _LIBCPP_NO_EXCEPTIONS - try - { -#endif // _LIBCPP_NO_EXCEPTIONS - __split_buffer<value_type, __alloc_rr&> __t(size(), 0, __alloc()); - __t.__construct_at_end(move_iterator<pointer>(__begin_), - move_iterator<pointer>(__end_)); - __t.__end_ = __t.__begin_ + (__end_ - __begin_); - _VSTD::swap(__first_, __t.__first_); - _VSTD::swap(__begin_, __t.__begin_); - _VSTD::swap(__end_, __t.__end_); - _VSTD::swap(__end_cap(), __t.__end_cap()); -#ifndef _LIBCPP_NO_EXCEPTIONS - } - catch (...) - { - } -#endif // _LIBCPP_NO_EXCEPTIONS - } -} - -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::push_front(const_reference __x) -{ - if (__begin_ == __first_) - { - if (__end_ < __end_cap()) - { - difference_type __d = __end_cap() - __end_; - __d = (__d + 1) / 2; - __begin_ = _VSTD::move_backward(__begin_, __end_, __end_ + __d); - __end_ += __d; - } - else - { - size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); - __split_buffer<value_type, __alloc_rr&> __t(__c, (__c + 3) / 4, __alloc()); - __t.__construct_at_end(move_iterator<pointer>(__begin_), - move_iterator<pointer>(__end_)); - _VSTD::swap(__first_, __t.__first_); - _VSTD::swap(__begin_, __t.__begin_); - _VSTD::swap(__end_, __t.__end_); - _VSTD::swap(__end_cap(), __t.__end_cap()); - } - } - __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__begin_-1), __x); - --__begin_; -} - -#ifndef _LIBCPP_CXX03_LANG - -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::push_front(value_type&& __x) -{ - if (__begin_ == __first_) - { - if (__end_ < __end_cap()) - { - difference_type __d = __end_cap() - __end_; - __d = (__d + 1) / 2; - __begin_ = _VSTD::move_backward(__begin_, __end_, __end_ + __d); - __end_ += __d; - } - else - { - size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); - __split_buffer<value_type, __alloc_rr&> __t(__c, (__c + 3) / 4, __alloc()); - __t.__construct_at_end(move_iterator<pointer>(__begin_), - move_iterator<pointer>(__end_)); - _VSTD::swap(__first_, __t.__first_); - _VSTD::swap(__begin_, __t.__begin_); - _VSTD::swap(__end_, __t.__end_); - _VSTD::swap(__end_cap(), __t.__end_cap()); - } - } - __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__begin_-1), - _VSTD::move(__x)); - --__begin_; -} - -#endif // _LIBCPP_CXX03_LANG - -template <class _Tp, class _Allocator> -inline _LIBCPP_INLINE_VISIBILITY -void -__split_buffer<_Tp, _Allocator>::push_back(const_reference __x) -{ - if (__end_ == __end_cap()) - { - if (__begin_ > __first_) - { - difference_type __d = __begin_ - __first_; - __d = (__d + 1) / 2; - __end_ = _VSTD::move(__begin_, __end_, __begin_ - __d); - __begin_ -= __d; - } - else - { - size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); - __split_buffer<value_type, __alloc_rr&> __t(__c, __c / 4, __alloc()); - __t.__construct_at_end(move_iterator<pointer>(__begin_), - move_iterator<pointer>(__end_)); - _VSTD::swap(__first_, __t.__first_); - _VSTD::swap(__begin_, __t.__begin_); - _VSTD::swap(__end_, __t.__end_); - _VSTD::swap(__end_cap(), __t.__end_cap()); - } - } - __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__end_), __x); - ++__end_; -} - -#ifndef _LIBCPP_CXX03_LANG - -template <class _Tp, class _Allocator> -void -__split_buffer<_Tp, _Allocator>::push_back(value_type&& __x) -{ - if (__end_ == __end_cap()) - { - if (__begin_ > __first_) - { - difference_type __d = __begin_ - __first_; - __d = (__d + 1) / 2; - __end_ = _VSTD::move(__begin_, __end_, __begin_ - __d); - __begin_ -= __d; - } - else - { - size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); - __split_buffer<value_type, __alloc_rr&> __t(__c, __c / 4, __alloc()); - __t.__construct_at_end(move_iterator<pointer>(__begin_), - move_iterator<pointer>(__end_)); - _VSTD::swap(__first_, __t.__first_); - _VSTD::swap(__begin_, __t.__begin_); - _VSTD::swap(__end_, __t.__end_); - _VSTD::swap(__end_cap(), __t.__end_cap()); - } - } - __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__end_), - _VSTD::move(__x)); - ++__end_; -} - -template <class _Tp, class _Allocator> -template <class... _Args> -void -__split_buffer<_Tp, _Allocator>::emplace_back(_Args&&... __args) -{ - if (__end_ == __end_cap()) - { - if (__begin_ > __first_) - { - difference_type __d = __begin_ - __first_; - __d = (__d + 1) / 2; - __end_ = _VSTD::move(__begin_, __end_, __begin_ - __d); - __begin_ -= __d; - } - else - { - size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); - __split_buffer<value_type, __alloc_rr&> __t(__c, __c / 4, __alloc()); - __t.__construct_at_end(move_iterator<pointer>(__begin_), - move_iterator<pointer>(__end_)); - _VSTD::swap(__first_, __t.__first_); - _VSTD::swap(__begin_, __t.__begin_); - _VSTD::swap(__end_, __t.__end_); - _VSTD::swap(__end_cap(), __t.__end_cap()); - } - } - __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__end_), - _VSTD::forward<_Args>(__args)...); - ++__end_; -} - -#endif // _LIBCPP_CXX03_LANG - -template <class _Tp, class _Allocator> -inline _LIBCPP_INLINE_VISIBILITY -void -swap(__split_buffer<_Tp, _Allocator>& __x, __split_buffer<_Tp, _Allocator>& __y) - _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) -{ - __x.swap(__y); -} - -_LIBCPP_END_NAMESPACE_STD - -_LIBCPP_POP_MACROS - -#endif // _LIBCPP_SPLIT_BUFFER |