__split_buffer revision 261272
1227825Stheraven// -*- C++ -*- 2227825Stheraven#ifndef _LIBCPP_SPLIT_BUFFER 3227825Stheraven#define _LIBCPP_SPLIT_BUFFER 4227825Stheraven 5227825Stheraven#include <__config> 6227825Stheraven#include <type_traits> 7227825Stheraven#include <algorithm> 8227825Stheraven 9232924Stheraven#include <__undef_min_max> 10232924Stheraven 11227825Stheraven#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 12227825Stheraven#pragma GCC system_header 13227825Stheraven#endif 14227825Stheraven 15227825Stheraven_LIBCPP_BEGIN_NAMESPACE_STD 16227825Stheraven 17227825Stheraventemplate <bool> 18227825Stheravenclass __split_buffer_common 19227825Stheraven{ 20227825Stheravenprotected: 21227825Stheraven void __throw_length_error() const; 22227825Stheraven void __throw_out_of_range() const; 23227825Stheraven}; 24227825Stheraven 25227825Stheraventemplate <class _Tp, class _Allocator = allocator<_Tp> > 26227825Stheravenstruct __split_buffer 27227825Stheraven : private __split_buffer_common<true> 28227825Stheraven{ 29227825Stheravenprivate: 30227825Stheraven __split_buffer(const __split_buffer&); 31227825Stheraven __split_buffer& operator=(const __split_buffer&); 32227825Stheravenpublic: 33227825Stheraven typedef _Tp value_type; 34227825Stheraven typedef _Allocator allocator_type; 35227825Stheraven typedef typename remove_reference<allocator_type>::type __alloc_rr; 36227825Stheraven typedef allocator_traits<__alloc_rr> __alloc_traits; 37227825Stheraven typedef value_type& reference; 38227825Stheraven typedef const value_type& const_reference; 39227825Stheraven typedef typename __alloc_traits::size_type size_type; 40227825Stheraven typedef typename __alloc_traits::difference_type difference_type; 41227825Stheraven typedef typename __alloc_traits::pointer pointer; 42227825Stheraven typedef typename __alloc_traits::const_pointer const_pointer; 43227825Stheraven typedef pointer iterator; 44227825Stheraven typedef const_pointer const_iterator; 45227825Stheraven 46227825Stheraven pointer __first_; 47227825Stheraven pointer __begin_; 48227825Stheraven pointer __end_; 49227825Stheraven __compressed_pair<pointer, allocator_type> __end_cap_; 50227825Stheraven 51227825Stheraven typedef typename add_lvalue_reference<allocator_type>::type __alloc_ref; 52227825Stheraven typedef typename add_lvalue_reference<allocator_type>::type __alloc_const_ref; 53227825Stheraven 54227825Stheraven _LIBCPP_INLINE_VISIBILITY __alloc_rr& __alloc() _NOEXCEPT {return __end_cap_.second();} 55227825Stheraven _LIBCPP_INLINE_VISIBILITY const __alloc_rr& __alloc() const _NOEXCEPT {return __end_cap_.second();} 56227825Stheraven _LIBCPP_INLINE_VISIBILITY pointer& __end_cap() _NOEXCEPT {return __end_cap_.first();} 57227825Stheraven _LIBCPP_INLINE_VISIBILITY const pointer& __end_cap() const _NOEXCEPT {return __end_cap_.first();} 58227825Stheraven 59227825Stheraven __split_buffer() 60227825Stheraven _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 61227825Stheraven explicit __split_buffer(__alloc_rr& __a); 62227825Stheraven explicit __split_buffer(const __alloc_rr& __a); 63227825Stheraven __split_buffer(size_type __cap, size_type __start, __alloc_rr& __a); 64227825Stheraven ~__split_buffer(); 65227825Stheraven 66227825Stheraven#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 67227825Stheraven __split_buffer(__split_buffer&& __c) 68227825Stheraven _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 69227825Stheraven __split_buffer(__split_buffer&& __c, const __alloc_rr& __a); 70227825Stheraven __split_buffer& operator=(__split_buffer&& __c) 71227825Stheraven _NOEXCEPT_((__alloc_traits::propagate_on_container_move_assignment::value && 72227825Stheraven is_nothrow_move_assignable<allocator_type>::value) || 73227825Stheraven !__alloc_traits::propagate_on_container_move_assignment::value); 74227825Stheraven#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 75227825Stheraven 76227825Stheraven _LIBCPP_INLINE_VISIBILITY iterator begin() _NOEXCEPT {return __begin_;} 77227825Stheraven _LIBCPP_INLINE_VISIBILITY const_iterator begin() const _NOEXCEPT {return __begin_;} 78227825Stheraven _LIBCPP_INLINE_VISIBILITY iterator end() _NOEXCEPT {return __end_;} 79227825Stheraven _LIBCPP_INLINE_VISIBILITY const_iterator end() const _NOEXCEPT {return __end_;} 80227825Stheraven 81227825Stheraven _LIBCPP_INLINE_VISIBILITY 82227825Stheraven void clear() _NOEXCEPT 83227825Stheraven {__destruct_at_end(__begin_);} 84227825Stheraven _LIBCPP_INLINE_VISIBILITY size_type size() const {return static_cast<size_type>(__end_ - __begin_);} 85227825Stheraven _LIBCPP_INLINE_VISIBILITY bool empty() const {return __end_ == __begin_;} 86227825Stheraven _LIBCPP_INLINE_VISIBILITY size_type capacity() const {return static_cast<size_type>(__end_cap() - __first_);} 87227825Stheraven _LIBCPP_INLINE_VISIBILITY size_type __front_spare() const {return static_cast<size_type>(__begin_ - __first_);} 88227825Stheraven _LIBCPP_INLINE_VISIBILITY size_type __back_spare() const {return static_cast<size_type>(__end_cap() - __end_);} 89227825Stheraven 90227825Stheraven _LIBCPP_INLINE_VISIBILITY reference front() {return *__begin_;} 91227825Stheraven _LIBCPP_INLINE_VISIBILITY const_reference front() const {return *__begin_;} 92227825Stheraven _LIBCPP_INLINE_VISIBILITY reference back() {return *(__end_ - 1);} 93227825Stheraven _LIBCPP_INLINE_VISIBILITY const_reference back() const {return *(__end_ - 1);} 94227825Stheraven 95227825Stheraven void reserve(size_type __n); 96227825Stheraven void shrink_to_fit() _NOEXCEPT; 97227825Stheraven void push_front(const_reference __x); 98232924Stheraven _LIBCPP_INLINE_VISIBILITY void push_back(const_reference __x); 99227825Stheraven#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 100227825Stheraven void push_front(value_type&& __x); 101227825Stheraven void push_back(value_type&& __x); 102227825Stheraven#if !defined(_LIBCPP_HAS_NO_VARIADICS) 103227825Stheraven template <class... _Args> 104227825Stheraven void emplace_back(_Args&&... __args); 105227825Stheraven#endif // !defined(_LIBCPP_HAS_NO_VARIADICS) 106227825Stheraven#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 107227825Stheraven 108227825Stheraven _LIBCPP_INLINE_VISIBILITY void pop_front() {__destruct_at_begin(__begin_+1);} 109227825Stheraven _LIBCPP_INLINE_VISIBILITY void pop_back() {__destruct_at_end(__end_-1);} 110227825Stheraven 111227825Stheraven void __construct_at_end(size_type __n); 112227825Stheraven void __construct_at_end(size_type __n, const_reference __x); 113227825Stheraven template <class _InputIter> 114227825Stheraven typename enable_if 115227825Stheraven < 116227825Stheraven __is_input_iterator<_InputIter>::value && 117227825Stheraven !__is_forward_iterator<_InputIter>::value, 118227825Stheraven void 119227825Stheraven >::type 120227825Stheraven __construct_at_end(_InputIter __first, _InputIter __last); 121227825Stheraven template <class _ForwardIterator> 122227825Stheraven typename enable_if 123227825Stheraven < 124227825Stheraven __is_forward_iterator<_ForwardIterator>::value, 125227825Stheraven void 126227825Stheraven >::type 127227825Stheraven __construct_at_end(_ForwardIterator __first, _ForwardIterator __last); 128227825Stheraven 129227825Stheraven _LIBCPP_INLINE_VISIBILITY void __destruct_at_begin(pointer __new_begin) 130227825Stheraven {__destruct_at_begin(__new_begin, is_trivially_destructible<value_type>());} 131227825Stheraven void __destruct_at_begin(pointer __new_begin, false_type); 132227825Stheraven void __destruct_at_begin(pointer __new_begin, true_type); 133227825Stheraven 134227825Stheraven _LIBCPP_INLINE_VISIBILITY 135227825Stheraven void __destruct_at_end(pointer __new_last) _NOEXCEPT 136232924Stheraven {__destruct_at_end(__new_last, false_type());} 137232924Stheraven _LIBCPP_INLINE_VISIBILITY 138227825Stheraven void __destruct_at_end(pointer __new_last, false_type) _NOEXCEPT; 139232924Stheraven _LIBCPP_INLINE_VISIBILITY 140227825Stheraven void __destruct_at_end(pointer __new_last, true_type) _NOEXCEPT; 141227825Stheraven 142227825Stheraven void swap(__split_buffer& __x) 143227825Stheraven _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value|| 144227825Stheraven __is_nothrow_swappable<__alloc_rr>::value); 145227825Stheraven 146227825Stheraven bool __invariants() const; 147227825Stheraven 148227825Stheravenprivate: 149227825Stheraven _LIBCPP_INLINE_VISIBILITY 150227825Stheraven void __move_assign_alloc(__split_buffer& __c, true_type) 151227825Stheraven _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 152227825Stheraven { 153227825Stheraven __alloc() = _VSTD::move(__c.__alloc()); 154227825Stheraven } 155227825Stheraven 156227825Stheraven _LIBCPP_INLINE_VISIBILITY 157232924Stheraven void __move_assign_alloc(__split_buffer&, false_type) _NOEXCEPT 158227825Stheraven {} 159227825Stheraven 160227825Stheraven _LIBCPP_INLINE_VISIBILITY 161227825Stheraven static void __swap_alloc(__alloc_rr& __x, __alloc_rr& __y) 162227825Stheraven _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value|| 163227825Stheraven __is_nothrow_swappable<__alloc_rr>::value) 164227825Stheraven {__swap_alloc(__x, __y, integral_constant<bool, 165227825Stheraven __alloc_traits::propagate_on_container_swap::value>());} 166227825Stheraven 167227825Stheraven _LIBCPP_INLINE_VISIBILITY 168227825Stheraven static void __swap_alloc(__alloc_rr& __x, __alloc_rr& __y, true_type) 169227825Stheraven _NOEXCEPT_(__is_nothrow_swappable<__alloc_rr>::value) 170227825Stheraven { 171227825Stheraven using _VSTD::swap; 172227825Stheraven swap(__x, __y); 173227825Stheraven } 174227825Stheraven 175227825Stheraven _LIBCPP_INLINE_VISIBILITY 176232924Stheraven static void __swap_alloc(__alloc_rr&, __alloc_rr&, false_type) _NOEXCEPT 177227825Stheraven {} 178227825Stheraven}; 179227825Stheraven 180227825Stheraventemplate <class _Tp, class _Allocator> 181227825Stheravenbool 182227825Stheraven__split_buffer<_Tp, _Allocator>::__invariants() const 183227825Stheraven{ 184227825Stheraven if (__first_ == nullptr) 185227825Stheraven { 186227825Stheraven if (__begin_ != nullptr) 187227825Stheraven return false; 188227825Stheraven if (__end_ != nullptr) 189227825Stheraven return false; 190227825Stheraven if (__end_cap() != nullptr) 191227825Stheraven return false; 192227825Stheraven } 193227825Stheraven else 194227825Stheraven { 195227825Stheraven if (__begin_ < __first_) 196227825Stheraven return false; 197227825Stheraven if (__end_ < __begin_) 198227825Stheraven return false; 199227825Stheraven if (__end_cap() < __end_) 200227825Stheraven return false; 201227825Stheraven } 202227825Stheraven return true; 203227825Stheraven} 204227825Stheraven 205227825Stheraven// Default constructs __n objects starting at __end_ 206227825Stheraven// throws if construction throws 207227825Stheraven// Precondition: __n > 0 208227825Stheraven// Precondition: size() + __n <= capacity() 209227825Stheraven// Postcondition: size() == size() + __n 210227825Stheraventemplate <class _Tp, class _Allocator> 211227825Stheravenvoid 212227825Stheraven__split_buffer<_Tp, _Allocator>::__construct_at_end(size_type __n) 213227825Stheraven{ 214227825Stheraven __alloc_rr& __a = this->__alloc(); 215227825Stheraven do 216227825Stheraven { 217227825Stheraven __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_)); 218227825Stheraven ++this->__end_; 219227825Stheraven --__n; 220227825Stheraven } while (__n > 0); 221227825Stheraven} 222227825Stheraven 223227825Stheraven// Copy constructs __n objects starting at __end_ from __x 224227825Stheraven// throws if construction throws 225227825Stheraven// Precondition: __n > 0 226227825Stheraven// Precondition: size() + __n <= capacity() 227227825Stheraven// Postcondition: size() == old size() + __n 228227825Stheraven// Postcondition: [i] == __x for all i in [size() - __n, __n) 229227825Stheraventemplate <class _Tp, class _Allocator> 230227825Stheravenvoid 231227825Stheraven__split_buffer<_Tp, _Allocator>::__construct_at_end(size_type __n, const_reference __x) 232227825Stheraven{ 233227825Stheraven __alloc_rr& __a = this->__alloc(); 234227825Stheraven do 235227825Stheraven { 236227825Stheraven __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_), __x); 237227825Stheraven ++this->__end_; 238227825Stheraven --__n; 239227825Stheraven } while (__n > 0); 240227825Stheraven} 241227825Stheraven 242227825Stheraventemplate <class _Tp, class _Allocator> 243227825Stheraventemplate <class _InputIter> 244227825Stheraventypename enable_if 245227825Stheraven< 246227825Stheraven __is_input_iterator<_InputIter>::value && 247227825Stheraven !__is_forward_iterator<_InputIter>::value, 248227825Stheraven void 249227825Stheraven>::type 250227825Stheraven__split_buffer<_Tp, _Allocator>::__construct_at_end(_InputIter __first, _InputIter __last) 251227825Stheraven{ 252227825Stheraven __alloc_rr& __a = this->__alloc(); 253227825Stheraven for (; __first != __last; ++__first) 254227825Stheraven { 255227825Stheraven if (__end_ == __end_cap()) 256227825Stheraven { 257227825Stheraven size_type __old_cap = __end_cap() - __first_; 258227825Stheraven size_type __new_cap = _VSTD::max<size_type>(2 * __old_cap, 8); 259227825Stheraven __split_buffer __buf(__new_cap, 0, __a); 260227825Stheraven for (pointer __p = __begin_; __p != __end_; ++__p, ++__buf.__end_) 261227825Stheraven __alloc_traits::construct(__buf.__alloc(), 262227825Stheraven _VSTD::__to_raw_pointer(__buf.__end_), _VSTD::move(*__p)); 263227825Stheraven swap(__buf); 264227825Stheraven } 265227825Stheraven __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_), *__first); 266227825Stheraven ++this->__end_; 267227825Stheraven } 268227825Stheraven} 269227825Stheraven 270227825Stheraventemplate <class _Tp, class _Allocator> 271227825Stheraventemplate <class _ForwardIterator> 272227825Stheraventypename enable_if 273227825Stheraven< 274227825Stheraven __is_forward_iterator<_ForwardIterator>::value, 275227825Stheraven void 276227825Stheraven>::type 277227825Stheraven__split_buffer<_Tp, _Allocator>::__construct_at_end(_ForwardIterator __first, _ForwardIterator __last) 278227825Stheraven{ 279227825Stheraven __alloc_rr& __a = this->__alloc(); 280227825Stheraven for (; __first != __last; ++__first) 281227825Stheraven { 282227825Stheraven __alloc_traits::construct(__a, _VSTD::__to_raw_pointer(this->__end_), *__first); 283227825Stheraven ++this->__end_; 284227825Stheraven } 285227825Stheraven} 286227825Stheraven 287227825Stheraventemplate <class _Tp, class _Allocator> 288261272Sdiminline _LIBCPP_INLINE_VISIBILITY 289227825Stheravenvoid 290227825Stheraven__split_buffer<_Tp, _Allocator>::__destruct_at_begin(pointer __new_begin, false_type) 291227825Stheraven{ 292232924Stheraven while (__begin_ != __new_begin) 293253146Stheraven __alloc_traits::destroy(__alloc(), __to_raw_pointer(__begin_++)); 294227825Stheraven} 295227825Stheraven 296227825Stheraventemplate <class _Tp, class _Allocator> 297261272Sdiminline _LIBCPP_INLINE_VISIBILITY 298227825Stheravenvoid 299227825Stheraven__split_buffer<_Tp, _Allocator>::__destruct_at_begin(pointer __new_begin, true_type) 300227825Stheraven{ 301227825Stheraven __begin_ = __new_begin; 302227825Stheraven} 303227825Stheraven 304227825Stheraventemplate <class _Tp, class _Allocator> 305261272Sdiminline _LIBCPP_INLINE_VISIBILITY 306227825Stheravenvoid 307227825Stheraven__split_buffer<_Tp, _Allocator>::__destruct_at_end(pointer __new_last, false_type) _NOEXCEPT 308227825Stheraven{ 309232924Stheraven while (__new_last != __end_) 310253146Stheraven __alloc_traits::destroy(__alloc(), __to_raw_pointer(--__end_)); 311227825Stheraven} 312227825Stheraven 313227825Stheraventemplate <class _Tp, class _Allocator> 314261272Sdiminline _LIBCPP_INLINE_VISIBILITY 315227825Stheravenvoid 316227825Stheraven__split_buffer<_Tp, _Allocator>::__destruct_at_end(pointer __new_last, true_type) _NOEXCEPT 317227825Stheraven{ 318227825Stheraven __end_ = __new_last; 319227825Stheraven} 320227825Stheraven 321227825Stheraventemplate <class _Tp, class _Allocator> 322227825Stheraven__split_buffer<_Tp, _Allocator>::__split_buffer(size_type __cap, size_type __start, __alloc_rr& __a) 323253146Stheraven : __end_cap_(nullptr, __a) 324227825Stheraven{ 325227825Stheraven __first_ = __cap != 0 ? __alloc_traits::allocate(__alloc(), __cap) : nullptr; 326227825Stheraven __begin_ = __end_ = __first_ + __start; 327227825Stheraven __end_cap() = __first_ + __cap; 328227825Stheraven} 329227825Stheraven 330227825Stheraventemplate <class _Tp, class _Allocator> 331261272Sdiminline _LIBCPP_INLINE_VISIBILITY 332227825Stheraven__split_buffer<_Tp, _Allocator>::__split_buffer() 333227825Stheraven _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 334253146Stheraven : __first_(nullptr), __begin_(nullptr), __end_(nullptr), __end_cap_(nullptr) 335227825Stheraven{ 336227825Stheraven} 337227825Stheraven 338227825Stheraventemplate <class _Tp, class _Allocator> 339261272Sdiminline _LIBCPP_INLINE_VISIBILITY 340227825Stheraven__split_buffer<_Tp, _Allocator>::__split_buffer(__alloc_rr& __a) 341253146Stheraven : __first_(nullptr), __begin_(nullptr), __end_(nullptr), __end_cap_(nullptr, __a) 342227825Stheraven{ 343227825Stheraven} 344227825Stheraven 345227825Stheraventemplate <class _Tp, class _Allocator> 346261272Sdiminline _LIBCPP_INLINE_VISIBILITY 347227825Stheraven__split_buffer<_Tp, _Allocator>::__split_buffer(const __alloc_rr& __a) 348253146Stheraven : __first_(nullptr), __begin_(nullptr), __end_(nullptr), __end_cap_(nullptr, __a) 349227825Stheraven{ 350227825Stheraven} 351227825Stheraven 352227825Stheraventemplate <class _Tp, class _Allocator> 353227825Stheraven__split_buffer<_Tp, _Allocator>::~__split_buffer() 354227825Stheraven{ 355227825Stheraven clear(); 356227825Stheraven if (__first_) 357227825Stheraven __alloc_traits::deallocate(__alloc(), __first_, capacity()); 358227825Stheraven} 359227825Stheraven 360227825Stheraven#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 361227825Stheraven 362227825Stheraventemplate <class _Tp, class _Allocator> 363227825Stheraven__split_buffer<_Tp, _Allocator>::__split_buffer(__split_buffer&& __c) 364227825Stheraven _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 365227825Stheraven : __first_(_VSTD::move(__c.__first_)), 366227825Stheraven __begin_(_VSTD::move(__c.__begin_)), 367227825Stheraven __end_(_VSTD::move(__c.__end_)), 368227825Stheraven __end_cap_(_VSTD::move(__c.__end_cap_)) 369227825Stheraven{ 370227825Stheraven __c.__first_ = nullptr; 371227825Stheraven __c.__begin_ = nullptr; 372227825Stheraven __c.__end_ = nullptr; 373227825Stheraven __c.__end_cap() = nullptr; 374227825Stheraven} 375227825Stheraven 376227825Stheraventemplate <class _Tp, class _Allocator> 377227825Stheraven__split_buffer<_Tp, _Allocator>::__split_buffer(__split_buffer&& __c, const __alloc_rr& __a) 378227825Stheraven : __end_cap_(__a) 379227825Stheraven{ 380227825Stheraven if (__a == __c.__alloc()) 381227825Stheraven { 382227825Stheraven __first_ = __c.__first_; 383227825Stheraven __begin_ = __c.__begin_; 384227825Stheraven __end_ = __c.__end_; 385227825Stheraven __end_cap() = __c.__end_cap(); 386227825Stheraven __c.__first_ = nullptr; 387227825Stheraven __c.__begin_ = nullptr; 388227825Stheraven __c.__end_ = nullptr; 389227825Stheraven __c.__end_cap() = nullptr; 390227825Stheraven } 391227825Stheraven else 392227825Stheraven { 393227825Stheraven size_type __cap = __c.size(); 394227825Stheraven __first_ = __alloc_traits::allocate(__alloc(), __cap); 395227825Stheraven __begin_ = __end_ = __first_; 396227825Stheraven __end_cap() = __first_ + __cap; 397232924Stheraven typedef move_iterator<iterator> _Ip; 398232924Stheraven __construct_at_end(_Ip(__c.begin()), _Ip(__c.end())); 399227825Stheraven } 400227825Stheraven} 401227825Stheraven 402227825Stheraventemplate <class _Tp, class _Allocator> 403227825Stheraven__split_buffer<_Tp, _Allocator>& 404227825Stheraven__split_buffer<_Tp, _Allocator>::operator=(__split_buffer&& __c) 405227825Stheraven _NOEXCEPT_((__alloc_traits::propagate_on_container_move_assignment::value && 406227825Stheraven is_nothrow_move_assignable<allocator_type>::value) || 407227825Stheraven !__alloc_traits::propagate_on_container_move_assignment::value) 408227825Stheraven{ 409227825Stheraven clear(); 410227825Stheraven shrink_to_fit(); 411227825Stheraven __first_ = __c.__first_; 412227825Stheraven __begin_ = __c.__begin_; 413227825Stheraven __end_ = __c.__end_; 414227825Stheraven __end_cap() = __c.__end_cap(); 415227825Stheraven __move_assign_alloc(__c, 416227825Stheraven integral_constant<bool, 417227825Stheraven __alloc_traits::propagate_on_container_move_assignment::value>()); 418227825Stheraven __c.__first_ = __c.__begin_ = __c.__end_ = __c.__end_cap() = nullptr; 419227825Stheraven return *this; 420227825Stheraven} 421227825Stheraven 422227825Stheraven#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 423227825Stheraven 424227825Stheraventemplate <class _Tp, class _Allocator> 425227825Stheravenvoid 426227825Stheraven__split_buffer<_Tp, _Allocator>::swap(__split_buffer& __x) 427227825Stheraven _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value|| 428227825Stheraven __is_nothrow_swappable<__alloc_rr>::value) 429227825Stheraven{ 430227825Stheraven _VSTD::swap(__first_, __x.__first_); 431227825Stheraven _VSTD::swap(__begin_, __x.__begin_); 432227825Stheraven _VSTD::swap(__end_, __x.__end_); 433227825Stheraven _VSTD::swap(__end_cap(), __x.__end_cap()); 434227825Stheraven __swap_alloc(__alloc(), __x.__alloc()); 435227825Stheraven} 436227825Stheraven 437227825Stheraventemplate <class _Tp, class _Allocator> 438227825Stheravenvoid 439227825Stheraven__split_buffer<_Tp, _Allocator>::reserve(size_type __n) 440227825Stheraven{ 441227825Stheraven if (__n < capacity()) 442227825Stheraven { 443227825Stheraven __split_buffer<value_type, __alloc_rr&> __t(__n, 0, __alloc()); 444227825Stheraven __t.__construct_at_end(move_iterator<pointer>(__begin_), 445227825Stheraven move_iterator<pointer>(__end_)); 446227825Stheraven _VSTD::swap(__first_, __t.__first_); 447227825Stheraven _VSTD::swap(__begin_, __t.__begin_); 448227825Stheraven _VSTD::swap(__end_, __t.__end_); 449227825Stheraven _VSTD::swap(__end_cap(), __t.__end_cap()); 450227825Stheraven } 451227825Stheraven} 452227825Stheraven 453227825Stheraventemplate <class _Tp, class _Allocator> 454227825Stheravenvoid 455227825Stheraven__split_buffer<_Tp, _Allocator>::shrink_to_fit() _NOEXCEPT 456227825Stheraven{ 457227825Stheraven if (capacity() > size()) 458227825Stheraven { 459227825Stheraven#ifndef _LIBCPP_NO_EXCEPTIONS 460227825Stheraven try 461227825Stheraven { 462227825Stheraven#endif // _LIBCPP_NO_EXCEPTIONS 463227825Stheraven __split_buffer<value_type, __alloc_rr&> __t(size(), 0, __alloc()); 464227825Stheraven __t.__construct_at_end(move_iterator<pointer>(__begin_), 465227825Stheraven move_iterator<pointer>(__end_)); 466227825Stheraven __t.__end_ = __t.__begin_ + (__end_ - __begin_); 467227825Stheraven _VSTD::swap(__first_, __t.__first_); 468227825Stheraven _VSTD::swap(__begin_, __t.__begin_); 469227825Stheraven _VSTD::swap(__end_, __t.__end_); 470227825Stheraven _VSTD::swap(__end_cap(), __t.__end_cap()); 471227825Stheraven#ifndef _LIBCPP_NO_EXCEPTIONS 472227825Stheraven } 473227825Stheraven catch (...) 474227825Stheraven { 475227825Stheraven } 476227825Stheraven#endif // _LIBCPP_NO_EXCEPTIONS 477227825Stheraven } 478227825Stheraven} 479227825Stheraven 480227825Stheraventemplate <class _Tp, class _Allocator> 481227825Stheravenvoid 482227825Stheraven__split_buffer<_Tp, _Allocator>::push_front(const_reference __x) 483227825Stheraven{ 484227825Stheraven if (__begin_ == __first_) 485227825Stheraven { 486227825Stheraven if (__end_ < __end_cap()) 487227825Stheraven { 488227825Stheraven difference_type __d = __end_cap() - __end_; 489227825Stheraven __d = (__d + 1) / 2; 490227825Stheraven __begin_ = _VSTD::move_backward(__begin_, __end_, __end_ + __d); 491227825Stheraven __end_ += __d; 492227825Stheraven } 493227825Stheraven else 494227825Stheraven { 495232924Stheraven size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); 496227825Stheraven __split_buffer<value_type, __alloc_rr&> __t(__c, (__c + 3) / 4, __alloc()); 497227825Stheraven __t.__construct_at_end(move_iterator<pointer>(__begin_), 498227825Stheraven move_iterator<pointer>(__end_)); 499227825Stheraven _VSTD::swap(__first_, __t.__first_); 500227825Stheraven _VSTD::swap(__begin_, __t.__begin_); 501227825Stheraven _VSTD::swap(__end_, __t.__end_); 502227825Stheraven _VSTD::swap(__end_cap(), __t.__end_cap()); 503227825Stheraven } 504227825Stheraven } 505227825Stheraven __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__begin_-1), __x); 506227825Stheraven --__begin_; 507227825Stheraven} 508227825Stheraven 509227825Stheraven#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 510227825Stheraven 511227825Stheraventemplate <class _Tp, class _Allocator> 512227825Stheravenvoid 513227825Stheraven__split_buffer<_Tp, _Allocator>::push_front(value_type&& __x) 514227825Stheraven{ 515227825Stheraven if (__begin_ == __first_) 516227825Stheraven { 517227825Stheraven if (__end_ < __end_cap()) 518227825Stheraven { 519227825Stheraven difference_type __d = __end_cap() - __end_; 520227825Stheraven __d = (__d + 1) / 2; 521227825Stheraven __begin_ = _VSTD::move_backward(__begin_, __end_, __end_ + __d); 522227825Stheraven __end_ += __d; 523227825Stheraven } 524227825Stheraven else 525227825Stheraven { 526232924Stheraven size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); 527227825Stheraven __split_buffer<value_type, __alloc_rr&> __t(__c, (__c + 3) / 4, __alloc()); 528227825Stheraven __t.__construct_at_end(move_iterator<pointer>(__begin_), 529227825Stheraven move_iterator<pointer>(__end_)); 530227825Stheraven _VSTD::swap(__first_, __t.__first_); 531227825Stheraven _VSTD::swap(__begin_, __t.__begin_); 532227825Stheraven _VSTD::swap(__end_, __t.__end_); 533227825Stheraven _VSTD::swap(__end_cap(), __t.__end_cap()); 534227825Stheraven } 535227825Stheraven } 536227825Stheraven __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__begin_-1), 537227825Stheraven _VSTD::move(__x)); 538227825Stheraven --__begin_; 539227825Stheraven} 540227825Stheraven 541227825Stheraven#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 542227825Stheraven 543227825Stheraventemplate <class _Tp, class _Allocator> 544261272Sdiminline _LIBCPP_INLINE_VISIBILITY 545227825Stheravenvoid 546227825Stheraven__split_buffer<_Tp, _Allocator>::push_back(const_reference __x) 547227825Stheraven{ 548227825Stheraven if (__end_ == __end_cap()) 549227825Stheraven { 550227825Stheraven if (__begin_ > __first_) 551227825Stheraven { 552227825Stheraven difference_type __d = __begin_ - __first_; 553227825Stheraven __d = (__d + 1) / 2; 554227825Stheraven __end_ = _VSTD::move(__begin_, __end_, __begin_ - __d); 555227825Stheraven __begin_ -= __d; 556227825Stheraven } 557227825Stheraven else 558227825Stheraven { 559232924Stheraven size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); 560227825Stheraven __split_buffer<value_type, __alloc_rr&> __t(__c, __c / 4, __alloc()); 561227825Stheraven __t.__construct_at_end(move_iterator<pointer>(__begin_), 562227825Stheraven move_iterator<pointer>(__end_)); 563227825Stheraven _VSTD::swap(__first_, __t.__first_); 564227825Stheraven _VSTD::swap(__begin_, __t.__begin_); 565227825Stheraven _VSTD::swap(__end_, __t.__end_); 566227825Stheraven _VSTD::swap(__end_cap(), __t.__end_cap()); 567227825Stheraven } 568227825Stheraven } 569227825Stheraven __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__end_), __x); 570227825Stheraven ++__end_; 571227825Stheraven} 572227825Stheraven 573227825Stheraven#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 574227825Stheraven 575227825Stheraventemplate <class _Tp, class _Allocator> 576227825Stheravenvoid 577227825Stheraven__split_buffer<_Tp, _Allocator>::push_back(value_type&& __x) 578227825Stheraven{ 579227825Stheraven if (__end_ == __end_cap()) 580227825Stheraven { 581227825Stheraven if (__begin_ > __first_) 582227825Stheraven { 583227825Stheraven difference_type __d = __begin_ - __first_; 584227825Stheraven __d = (__d + 1) / 2; 585227825Stheraven __end_ = _VSTD::move(__begin_, __end_, __begin_ - __d); 586227825Stheraven __begin_ -= __d; 587227825Stheraven } 588227825Stheraven else 589227825Stheraven { 590232924Stheraven size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); 591227825Stheraven __split_buffer<value_type, __alloc_rr&> __t(__c, __c / 4, __alloc()); 592227825Stheraven __t.__construct_at_end(move_iterator<pointer>(__begin_), 593227825Stheraven move_iterator<pointer>(__end_)); 594227825Stheraven _VSTD::swap(__first_, __t.__first_); 595227825Stheraven _VSTD::swap(__begin_, __t.__begin_); 596227825Stheraven _VSTD::swap(__end_, __t.__end_); 597227825Stheraven _VSTD::swap(__end_cap(), __t.__end_cap()); 598227825Stheraven } 599227825Stheraven } 600227825Stheraven __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__end_), 601227825Stheraven _VSTD::move(__x)); 602227825Stheraven ++__end_; 603227825Stheraven} 604227825Stheraven 605227825Stheraven#ifndef _LIBCPP_HAS_NO_VARIADICS 606227825Stheraven 607227825Stheraventemplate <class _Tp, class _Allocator> 608227825Stheraventemplate <class... _Args> 609227825Stheravenvoid 610227825Stheraven__split_buffer<_Tp, _Allocator>::emplace_back(_Args&&... __args) 611227825Stheraven{ 612227825Stheraven if (__end_ == __end_cap()) 613227825Stheraven { 614227825Stheraven if (__begin_ > __first_) 615227825Stheraven { 616227825Stheraven difference_type __d = __begin_ - __first_; 617227825Stheraven __d = (__d + 1) / 2; 618227825Stheraven __end_ = _VSTD::move(__begin_, __end_, __begin_ - __d); 619227825Stheraven __begin_ -= __d; 620227825Stheraven } 621227825Stheraven else 622227825Stheraven { 623232924Stheraven size_type __c = max<size_type>(2 * static_cast<size_t>(__end_cap() - __first_), 1); 624227825Stheraven __split_buffer<value_type, __alloc_rr&> __t(__c, __c / 4, __alloc()); 625227825Stheraven __t.__construct_at_end(move_iterator<pointer>(__begin_), 626227825Stheraven move_iterator<pointer>(__end_)); 627227825Stheraven _VSTD::swap(__first_, __t.__first_); 628227825Stheraven _VSTD::swap(__begin_, __t.__begin_); 629227825Stheraven _VSTD::swap(__end_, __t.__end_); 630227825Stheraven _VSTD::swap(__end_cap(), __t.__end_cap()); 631227825Stheraven } 632227825Stheraven } 633227825Stheraven __alloc_traits::construct(__alloc(), _VSTD::__to_raw_pointer(__end_), 634227825Stheraven _VSTD::forward<_Args>(__args)...); 635227825Stheraven ++__end_; 636227825Stheraven} 637227825Stheraven 638227825Stheraven#endif // _LIBCPP_HAS_NO_VARIADICS 639227825Stheraven 640227825Stheraven#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 641227825Stheraven 642227825Stheraventemplate <class _Tp, class _Allocator> 643261272Sdiminline _LIBCPP_INLINE_VISIBILITY 644227825Stheravenvoid 645227825Stheravenswap(__split_buffer<_Tp, _Allocator>& __x, __split_buffer<_Tp, _Allocator>& __y) 646227825Stheraven _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) 647227825Stheraven{ 648227825Stheraven __x.swap(__y); 649227825Stheraven} 650227825Stheraven 651227825Stheraven 652227825Stheraven_LIBCPP_END_NAMESPACE_STD 653227825Stheraven 654227825Stheraven#endif // _LIBCPP_SPLIT_BUFFER 655