2 //===---------------------------- array -----------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
19 template <class T, size_t N >
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;
31 typedef const T* const_pointer;
32 typedef std::reverse_iterator<iterator> reverse_iterator;
33 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
35 // No explicit construct/copy/destroy for aggregate type
36 void fill(const T& u);
37 void swap(array& a) noexcept(is_nothrow_swappable_v<T>);
40 iterator begin() noexcept;
41 const_iterator begin() const noexcept;
42 iterator end() noexcept;
43 const_iterator end() const noexcept;
45 reverse_iterator rbegin() noexcept;
46 const_reverse_iterator rbegin() const noexcept;
47 reverse_iterator rend() noexcept;
48 const_reverse_iterator rend() const noexcept;
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;
56 constexpr size_type size() const noexcept;
57 constexpr size_type max_size() const noexcept;
58 constexpr bool empty() const noexcept;
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);
67 const_reference front() const; // constexpr in C++14
69 const_reference back() const; // constexpr in C++14
72 const T* data() const noexcept;
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);
88 template <class T, size_t N >
89 void swap(array<T,N>& x, array<T,N>& y) noexcept(noexcept(x.swap(y)));
91 template <class T> class tuple_size;
92 template <size_t I, class T> class tuple_element;
93 template <class T, size_t N> struct tuple_size<array<T, N>>;
94 template <size_t I, class T, size_t N> struct tuple_element<I, array<T, N>>;
95 template <size_t I, class T, size_t N> T& get(array<T, N>&) noexcept; // constexpr in C++14
96 template <size_t I, class T, size_t N> const T& get(const array<T, N>&) noexcept; // constexpr in C++14
97 template <size_t I, class T, size_t N> T&& get(array<T, N>&&) noexcept; // constexpr in C++14
98 template <size_t I, class T, size_t N> const T&& get(const array<T, N>&&) noexcept; // constexpr in C++14
106 #include <type_traits>
111 #if defined(_LIBCPP_NO_EXCEPTIONS)
115 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
116 #pragma GCC system_header
119 _LIBCPP_BEGIN_NAMESPACE_STD
121 template <class _Tp, size_t _Size>
122 struct _LIBCPP_TYPE_VIS_ONLY array
125 typedef array __self;
126 typedef _Tp value_type;
127 typedef value_type& reference;
128 typedef const value_type& const_reference;
129 typedef value_type* iterator;
130 typedef const value_type* const_iterator;
131 typedef value_type* pointer;
132 typedef const value_type* const_pointer;
133 typedef size_t size_type;
134 typedef ptrdiff_t difference_type;
135 typedef std::reverse_iterator<iterator> reverse_iterator;
136 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
138 value_type __elems_[_Size > 0 ? _Size : 1];
140 // No explicit construct/copy/destroy for aggregate type
141 _LIBCPP_INLINE_VISIBILITY void fill(const value_type& __u)
142 {_VSTD::fill_n(__elems_, _Size, __u);}
143 _LIBCPP_INLINE_VISIBILITY
144 void swap(array& __a) _NOEXCEPT_(_Size == 0 || __is_nothrow_swappable<_Tp>::value)
145 { __swap_dispatch((std::integral_constant<bool, _Size == 0>()), __a); }
147 _LIBCPP_INLINE_VISIBILITY
148 void __swap_dispatch(std::true_type, array&) {}
150 _LIBCPP_INLINE_VISIBILITY
151 void __swap_dispatch(std::false_type, array& __a)
152 { _VSTD::swap_ranges(__elems_, __elems_ + _Size, __a.__elems_);}
155 _LIBCPP_INLINE_VISIBILITY
156 iterator begin() _NOEXCEPT {return iterator(__elems_);}
157 _LIBCPP_INLINE_VISIBILITY
158 const_iterator begin() const _NOEXCEPT {return const_iterator(__elems_);}
159 _LIBCPP_INLINE_VISIBILITY
160 iterator end() _NOEXCEPT {return iterator(__elems_ + _Size);}
161 _LIBCPP_INLINE_VISIBILITY
162 const_iterator end() const _NOEXCEPT {return const_iterator(__elems_ + _Size);}
164 _LIBCPP_INLINE_VISIBILITY
165 reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());}
166 _LIBCPP_INLINE_VISIBILITY
167 const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterator(end());}
168 _LIBCPP_INLINE_VISIBILITY
169 reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());}
170 _LIBCPP_INLINE_VISIBILITY
171 const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator(begin());}
173 _LIBCPP_INLINE_VISIBILITY
174 const_iterator cbegin() const _NOEXCEPT {return begin();}
175 _LIBCPP_INLINE_VISIBILITY
176 const_iterator cend() const _NOEXCEPT {return end();}
177 _LIBCPP_INLINE_VISIBILITY
178 const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();}
179 _LIBCPP_INLINE_VISIBILITY
180 const_reverse_iterator crend() const _NOEXCEPT {return rend();}
183 _LIBCPP_INLINE_VISIBILITY
184 _LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return _Size;}
185 _LIBCPP_INLINE_VISIBILITY
186 _LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return _Size;}
187 _LIBCPP_INLINE_VISIBILITY
188 _LIBCPP_CONSTEXPR bool empty() const _NOEXCEPT {return _Size == 0;}
191 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __n) {return __elems_[__n];}
192 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference operator[](size_type __n) const {return __elems_[__n];}
193 reference at(size_type __n);
194 _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference at(size_type __n) const;
196 _LIBCPP_INLINE_VISIBILITY reference front() {return __elems_[0];}
197 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference front() const {return __elems_[0];}
198 _LIBCPP_INLINE_VISIBILITY reference back() {return __elems_[_Size > 0 ? _Size-1 : 0];}
199 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference back() const {return __elems_[_Size > 0 ? _Size-1 : 0];}
201 _LIBCPP_INLINE_VISIBILITY
202 value_type* data() _NOEXCEPT {return __elems_;}
203 _LIBCPP_INLINE_VISIBILITY
204 const value_type* data() const _NOEXCEPT {return __elems_;}
207 template <class _Tp, size_t _Size>
208 typename array<_Tp, _Size>::reference
209 array<_Tp, _Size>::at(size_type __n)
212 #ifndef _LIBCPP_NO_EXCEPTIONS
213 throw out_of_range("array::at");
215 assert(!"array::at out_of_range");
217 return __elems_[__n];
220 template <class _Tp, size_t _Size>
221 _LIBCPP_CONSTEXPR_AFTER_CXX11
222 typename array<_Tp, _Size>::const_reference
223 array<_Tp, _Size>::at(size_type __n) const
226 #ifndef _LIBCPP_NO_EXCEPTIONS
227 throw out_of_range("array::at");
229 assert(!"array::at out_of_range");
231 return __elems_[__n];
234 template <class _Tp, size_t _Size>
235 inline _LIBCPP_INLINE_VISIBILITY
237 operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
239 return _VSTD::equal(__x.__elems_, __x.__elems_ + _Size, __y.__elems_);
242 template <class _Tp, size_t _Size>
243 inline _LIBCPP_INLINE_VISIBILITY
245 operator!=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
247 return !(__x == __y);
250 template <class _Tp, size_t _Size>
251 inline _LIBCPP_INLINE_VISIBILITY
253 operator<(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
255 return _VSTD::lexicographical_compare(__x.__elems_, __x.__elems_ + _Size, __y.__elems_, __y.__elems_ + _Size);
258 template <class _Tp, size_t _Size>
259 inline _LIBCPP_INLINE_VISIBILITY
261 operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
266 template <class _Tp, size_t _Size>
267 inline _LIBCPP_INLINE_VISIBILITY
269 operator<=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
274 template <class _Tp, size_t _Size>
275 inline _LIBCPP_INLINE_VISIBILITY
277 operator>=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
282 template <class _Tp, size_t _Size>
283 inline _LIBCPP_INLINE_VISIBILITY
287 __is_swappable<_Tp>::value,
290 swap(array<_Tp, _Size>& __x, array<_Tp, _Size>& __y)
291 _NOEXCEPT_(noexcept(__x.swap(__y)))
296 template <class _Tp, size_t _Size>
297 class _LIBCPP_TYPE_VIS_ONLY tuple_size<array<_Tp, _Size> >
298 : public integral_constant<size_t, _Size> {};
300 template <size_t _Ip, class _Tp, size_t _Size>
301 class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, array<_Tp, _Size> >
307 template <size_t _Ip, class _Tp, size_t _Size>
308 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
310 get(array<_Tp, _Size>& __a) _NOEXCEPT
312 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array)");
313 return __a.__elems_[_Ip];
316 template <size_t _Ip, class _Tp, size_t _Size>
317 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
319 get(const array<_Tp, _Size>& __a) _NOEXCEPT
321 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array)");
322 return __a.__elems_[_Ip];
325 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
327 template <size_t _Ip, class _Tp, size_t _Size>
328 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
330 get(array<_Tp, _Size>&& __a) _NOEXCEPT
332 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array &&)");
333 return _VSTD::move(__a.__elems_[_Ip]);
336 template <size_t _Ip, class _Tp, size_t _Size>
337 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
339 get(const array<_Tp, _Size>&& __a) _NOEXCEPT
341 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array &&)");
342 return _VSTD::move(__a.__elems_[_Ip]);
345 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
347 _LIBCPP_END_NAMESPACE_STD
349 #endif // _LIBCPP_ARRAY