OLD | NEW |
(Empty) | |
| 1 // -*- C++ -*- |
| 2 //===---------------------------- array -----------------------------------===// |
| 3 // |
| 4 // The LLVM Compiler Infrastructure |
| 5 // |
| 6 // This file is dual licensed under the MIT and the University of Illinois Open |
| 7 // Source Licenses. See LICENSE.TXT for details. |
| 8 // |
| 9 //===----------------------------------------------------------------------===// |
| 10 |
| 11 #ifndef _LIBCPP_ARRAY |
| 12 #define _LIBCPP_ARRAY |
| 13 |
| 14 /* |
| 15 array synopsis |
| 16 |
| 17 namespace std |
| 18 { |
| 19 template <class T, size_t N > |
| 20 struct array |
| 21 { |
| 22 // types: |
| 23 typedef T & reference; |
| 24 typedef const T & const_reference; |
| 25 typedef implementation defined iterator; |
| 26 typedef implementation defined const_iterator; |
| 27 typedef size_t size_type; |
| 28 typedef ptrdiff_t difference_type; |
| 29 typedef T value_type; |
| 30 typedef T* pointer; |
| 31 typedef const T* const_pointer; |
| 32 typedef std::reverse_iterator<iterator> reverse_iterator; |
| 33 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
| 34 |
| 35 // No explicit construct/copy/destroy for aggregate type |
| 36 void fill(const T& u); |
| 37 void swap(array& a) noexcept(noexcept(swap(declval<T&>(), declval<T&>()))); |
| 38 |
| 39 // iterators: |
| 40 iterator begin() noexcept; |
| 41 const_iterator begin() const noexcept; |
| 42 iterator end() noexcept; |
| 43 const_iterator end() const noexcept; |
| 44 |
| 45 reverse_iterator rbegin() noexcept; |
| 46 const_reverse_iterator rbegin() const noexcept; |
| 47 reverse_iterator rend() noexcept; |
| 48 const_reverse_iterator rend() const noexcept; |
| 49 |
| 50 const_iterator cbegin() const noexcept; |
| 51 const_iterator cend() const noexcept; |
| 52 const_reverse_iterator crbegin() const noexcept; |
| 53 const_reverse_iterator crend() const noexcept; |
| 54 |
| 55 // capacity: |
| 56 constexpr size_type size() const noexcept; |
| 57 constexpr size_type max_size() const noexcept; |
| 58 constexpr bool empty() const noexcept; |
| 59 |
| 60 // element access: |
| 61 reference operator[](size_type n); |
| 62 const_reference operator[](size_type n) const; // constexpr in C++14 |
| 63 const_reference at(size_type n) const; // constexpr in C++14 |
| 64 reference at(size_type n); |
| 65 |
| 66 reference front(); |
| 67 const_reference front() const; // constexpr in C++14 |
| 68 reference back(); |
| 69 const_reference back() const; // constexpr in C++14 |
| 70 |
| 71 T* data() noexcept; |
| 72 const T* data() const noexcept; |
| 73 }; |
| 74 |
| 75 template <class T, size_t N> |
| 76 bool operator==(const array<T,N>& x, const array<T,N>& y); |
| 77 template <class T, size_t N> |
| 78 bool operator!=(const array<T,N>& x, const array<T,N>& y); |
| 79 template <class T, size_t N> |
| 80 bool operator<(const array<T,N>& x, const array<T,N>& y); |
| 81 template <class T, size_t N> |
| 82 bool operator>(const array<T,N>& x, const array<T,N>& y); |
| 83 template <class T, size_t N> |
| 84 bool operator<=(const array<T,N>& x, const array<T,N>& y); |
| 85 template <class T, size_t N> |
| 86 bool operator>=(const array<T,N>& x, const array<T,N>& y); |
| 87 |
| 88 template <class T, size_t N > |
| 89 void swap(array<T,N>& x, array<T,N>& y) noexcept(noexcept(x.swap(y))); |
| 90 |
| 91 template <class T> class tuple_size; |
| 92 template <int I, class T> class tuple_element; |
| 93 template <class T, size_t N> struct tuple_size<array<T, N>>; |
| 94 template <int I, class T, size_t N> struct tuple_element<I, array<T, N>>; |
| 95 template <int I, class T, size_t N> T& get(array<T, N>&) noexcept; // constexpr
in C++14 |
| 96 template <int I, class T, size_t N> const T& get(const array<T, N>&) noexcept; /
/ constexpr in C++14 |
| 97 template <int I, class T, size_t N> T&& get(array<T, N>&&) noexcept; // constexp
r in C++14 |
| 98 |
| 99 } // std |
| 100 |
| 101 */ |
| 102 |
| 103 #include <__config> |
| 104 #include <__tuple> |
| 105 #include <type_traits> |
| 106 #include <utility> |
| 107 #include <iterator> |
| 108 #include <algorithm> |
| 109 #include <stdexcept> |
| 110 #if defined(_LIBCPP_NO_EXCEPTIONS) |
| 111 #include <cassert> |
| 112 #endif |
| 113 |
| 114 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 115 #pragma GCC system_header |
| 116 #endif |
| 117 |
| 118 _LIBCPP_BEGIN_NAMESPACE_STD |
| 119 |
| 120 template <class _Tp, size_t _Size> |
| 121 struct _LIBCPP_TYPE_VIS_ONLY array |
| 122 { |
| 123 // types: |
| 124 typedef array __self; |
| 125 typedef _Tp value_type; |
| 126 typedef value_type& reference; |
| 127 typedef const value_type& const_reference; |
| 128 typedef value_type* iterator; |
| 129 typedef const value_type* const_iterator; |
| 130 typedef value_type* pointer; |
| 131 typedef const value_type* const_pointer; |
| 132 typedef size_t size_type; |
| 133 typedef ptrdiff_t difference_type; |
| 134 typedef std::reverse_iterator<iterator> reverse_iterator; |
| 135 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
| 136 |
| 137 value_type __elems_[_Size > 0 ? _Size : 1]; |
| 138 |
| 139 // No explicit construct/copy/destroy for aggregate type |
| 140 _LIBCPP_INLINE_VISIBILITY void fill(const value_type& __u) |
| 141 {_VSTD::fill_n(__elems_, _Size, __u);} |
| 142 _LIBCPP_INLINE_VISIBILITY |
| 143 void swap(array& __a) _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value) |
| 144 {_VSTD::swap_ranges(__elems_, __elems_ + _Size, __a.__elems_);} |
| 145 |
| 146 // iterators: |
| 147 _LIBCPP_INLINE_VISIBILITY |
| 148 iterator begin() _NOEXCEPT {return iterator(__elems_);} |
| 149 _LIBCPP_INLINE_VISIBILITY |
| 150 const_iterator begin() const _NOEXCEPT {return const_iterator(__elems_);} |
| 151 _LIBCPP_INLINE_VISIBILITY |
| 152 iterator end() _NOEXCEPT {return iterator(__elems_ + _Size);} |
| 153 _LIBCPP_INLINE_VISIBILITY |
| 154 const_iterator end() const _NOEXCEPT {return const_iterator(__elems_ + _Size
);} |
| 155 |
| 156 _LIBCPP_INLINE_VISIBILITY |
| 157 reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());} |
| 158 _LIBCPP_INLINE_VISIBILITY |
| 159 const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterat
or(end());} |
| 160 _LIBCPP_INLINE_VISIBILITY |
| 161 reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());} |
| 162 _LIBCPP_INLINE_VISIBILITY |
| 163 const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator
(begin());} |
| 164 |
| 165 _LIBCPP_INLINE_VISIBILITY |
| 166 const_iterator cbegin() const _NOEXCEPT {return begin();} |
| 167 _LIBCPP_INLINE_VISIBILITY |
| 168 const_iterator cend() const _NOEXCEPT {return end();} |
| 169 _LIBCPP_INLINE_VISIBILITY |
| 170 const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();} |
| 171 _LIBCPP_INLINE_VISIBILITY |
| 172 const_reverse_iterator crend() const _NOEXCEPT {return rend();} |
| 173 |
| 174 // capacity: |
| 175 _LIBCPP_INLINE_VISIBILITY |
| 176 _LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return _Size;} |
| 177 _LIBCPP_INLINE_VISIBILITY |
| 178 _LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return _Size;} |
| 179 _LIBCPP_INLINE_VISIBILITY |
| 180 _LIBCPP_CONSTEXPR bool empty() const _NOEXCEPT {return _Size == 0;} |
| 181 |
| 182 // element access: |
| 183 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __n) {r
eturn __elems_[__n];} |
| 184 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference oper
ator[](size_type __n) const {return __elems_[__n];} |
| 185 reference at(size_type __n); |
| 186 _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference at(size_type __n) const; |
| 187 |
| 188 _LIBCPP_INLINE_VISIBILITY reference front() {return __elems_[0];
} |
| 189 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference fron
t() const {return __elems_[0];} |
| 190 _LIBCPP_INLINE_VISIBILITY reference back() {return __elems_[_Si
ze > 0 ? _Size-1 : 0];} |
| 191 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference back
() const {return __elems_[_Size > 0 ? _Size-1 : 0];} |
| 192 |
| 193 _LIBCPP_INLINE_VISIBILITY |
| 194 value_type* data() _NOEXCEPT {return __elems_;} |
| 195 _LIBCPP_INLINE_VISIBILITY |
| 196 const value_type* data() const _NOEXCEPT {return __elems_;} |
| 197 }; |
| 198 |
| 199 template <class _Tp, size_t _Size> |
| 200 typename array<_Tp, _Size>::reference |
| 201 array<_Tp, _Size>::at(size_type __n) |
| 202 { |
| 203 if (__n >= _Size) |
| 204 #ifndef _LIBCPP_NO_EXCEPTIONS |
| 205 throw out_of_range("array::at"); |
| 206 #else |
| 207 assert(!"array::at out_of_range"); |
| 208 #endif |
| 209 return __elems_[__n]; |
| 210 } |
| 211 |
| 212 template <class _Tp, size_t _Size> |
| 213 _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| 214 typename array<_Tp, _Size>::const_reference |
| 215 array<_Tp, _Size>::at(size_type __n) const |
| 216 { |
| 217 if (__n >= _Size) |
| 218 #ifndef _LIBCPP_NO_EXCEPTIONS |
| 219 throw out_of_range("array::at"); |
| 220 #else |
| 221 assert(!"array::at out_of_range"); |
| 222 #endif |
| 223 return __elems_[__n]; |
| 224 } |
| 225 |
| 226 template <class _Tp, size_t _Size> |
| 227 inline _LIBCPP_INLINE_VISIBILITY |
| 228 bool |
| 229 operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) |
| 230 { |
| 231 return _VSTD::equal(__x.__elems_, __x.__elems_ + _Size, __y.__elems_); |
| 232 } |
| 233 |
| 234 template <class _Tp, size_t _Size> |
| 235 inline _LIBCPP_INLINE_VISIBILITY |
| 236 bool |
| 237 operator!=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) |
| 238 { |
| 239 return !(__x == __y); |
| 240 } |
| 241 |
| 242 template <class _Tp, size_t _Size> |
| 243 inline _LIBCPP_INLINE_VISIBILITY |
| 244 bool |
| 245 operator<(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) |
| 246 { |
| 247 return _VSTD::lexicographical_compare(__x.__elems_, __x.__elems_ + _Size, __
y.__elems_, __y.__elems_ + _Size); |
| 248 } |
| 249 |
| 250 template <class _Tp, size_t _Size> |
| 251 inline _LIBCPP_INLINE_VISIBILITY |
| 252 bool |
| 253 operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) |
| 254 { |
| 255 return __y < __x; |
| 256 } |
| 257 |
| 258 template <class _Tp, size_t _Size> |
| 259 inline _LIBCPP_INLINE_VISIBILITY |
| 260 bool |
| 261 operator<=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) |
| 262 { |
| 263 return !(__y < __x); |
| 264 } |
| 265 |
| 266 template <class _Tp, size_t _Size> |
| 267 inline _LIBCPP_INLINE_VISIBILITY |
| 268 bool |
| 269 operator>=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) |
| 270 { |
| 271 return !(__x < __y); |
| 272 } |
| 273 |
| 274 template <class _Tp, size_t _Size> |
| 275 inline _LIBCPP_INLINE_VISIBILITY |
| 276 typename enable_if |
| 277 < |
| 278 __is_swappable<_Tp>::value, |
| 279 void |
| 280 >::type |
| 281 swap(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) |
| 282 _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value) |
| 283 { |
| 284 __x.swap(__y); |
| 285 } |
| 286 |
| 287 template <class _Tp, size_t _Size> |
| 288 class _LIBCPP_TYPE_VIS_ONLY tuple_size<array<_Tp, _Size> > |
| 289 : public integral_constant<size_t, _Size> {}; |
| 290 |
| 291 template <class _Tp, size_t _Size> |
| 292 class _LIBCPP_TYPE_VIS_ONLY tuple_size<const array<_Tp, _Size> > |
| 293 : public integral_constant<size_t, _Size> {}; |
| 294 |
| 295 template <size_t _Ip, class _Tp, size_t _Size> |
| 296 class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, array<_Tp, _Size> > |
| 297 { |
| 298 public: |
| 299 typedef _Tp type; |
| 300 }; |
| 301 |
| 302 template <size_t _Ip, class _Tp, size_t _Size> |
| 303 class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, const array<_Tp, _Size> > |
| 304 { |
| 305 public: |
| 306 typedef const _Tp type; |
| 307 }; |
| 308 |
| 309 template <size_t _Ip, class _Tp, size_t _Size> |
| 310 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| 311 _Tp& |
| 312 get(array<_Tp, _Size>& __a) _NOEXCEPT |
| 313 { |
| 314 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array)")
; |
| 315 return __a.__elems_[_Ip]; |
| 316 } |
| 317 |
| 318 template <size_t _Ip, class _Tp, size_t _Size> |
| 319 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| 320 const _Tp& |
| 321 get(const array<_Tp, _Size>& __a) _NOEXCEPT |
| 322 { |
| 323 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::ar
ray)"); |
| 324 return __a.__elems_[_Ip]; |
| 325 } |
| 326 |
| 327 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 328 |
| 329 template <size_t _Ip, class _Tp, size_t _Size> |
| 330 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| 331 _Tp&& |
| 332 get(array<_Tp, _Size>&& __a) _NOEXCEPT |
| 333 { |
| 334 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array &&
)"); |
| 335 return _VSTD::move(__a.__elems_[_Ip]); |
| 336 } |
| 337 |
| 338 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 339 |
| 340 _LIBCPP_END_NAMESPACE_STD |
| 341 |
| 342 #endif // _LIBCPP_ARRAY |
OLD | NEW |