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(noexcept(swap(declval<T&>(), declval<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 <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; // constexpr in C++14
105 #include <type_traits>
110 #if defined(_LIBCPP_NO_EXCEPTIONS)
114 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
115 #pragma GCC system_header
118 _LIBCPP_BEGIN_NAMESPACE_STD
120 template <class _Tp, size_t _Size>
121 struct _LIBCPP_TYPE_VIS_ONLY array
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;
137 value_type __elems_[_Size > 0 ? _Size : 1];
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_);}
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);}
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_iterator(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());}
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();}
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;}
183 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __n) {return __elems_[__n];}
184 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference operator[](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;
188 _LIBCPP_INLINE_VISIBILITY reference front() {return __elems_[0];}
189 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference front() const {return __elems_[0];}
190 _LIBCPP_INLINE_VISIBILITY reference back() {return __elems_[_Size > 0 ? _Size-1 : 0];}
191 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference back() const {return __elems_[_Size > 0 ? _Size-1 : 0];}
193 _LIBCPP_INLINE_VISIBILITY
194 value_type* data() _NOEXCEPT {return __elems_;}
195 _LIBCPP_INLINE_VISIBILITY
196 const value_type* data() const _NOEXCEPT {return __elems_;}
199 template <class _Tp, size_t _Size>
200 typename array<_Tp, _Size>::reference
201 array<_Tp, _Size>::at(size_type __n)
204 #ifndef _LIBCPP_NO_EXCEPTIONS
205 throw out_of_range("array::at");
207 assert(!"array::at out_of_range");
209 return __elems_[__n];
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
218 #ifndef _LIBCPP_NO_EXCEPTIONS
219 throw out_of_range("array::at");
221 assert(!"array::at out_of_range");
223 return __elems_[__n];
226 template <class _Tp, size_t _Size>
227 inline _LIBCPP_INLINE_VISIBILITY
229 operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
231 return _VSTD::equal(__x.__elems_, __x.__elems_ + _Size, __y.__elems_);
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 !(__x == __y);
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 _VSTD::lexicographical_compare(__x.__elems_, __x.__elems_ + _Size, __y.__elems_, __y.__elems_ + _Size);
250 template <class _Tp, size_t _Size>
251 inline _LIBCPP_INLINE_VISIBILITY
253 operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
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
278 __is_swappable<_Tp>::value,
281 swap(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
282 _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value)
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> {};
291 template <size_t _Ip, class _Tp, size_t _Size>
292 class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, array<_Tp, _Size> >
298 template <size_t _Ip, class _Tp, size_t _Size>
299 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
301 get(array<_Tp, _Size>& __a) _NOEXCEPT
303 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array)");
304 return __a.__elems_[_Ip];
307 template <size_t _Ip, class _Tp, size_t _Size>
308 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
310 get(const array<_Tp, _Size>& __a) _NOEXCEPT
312 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array)");
313 return __a.__elems_[_Ip];
316 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
318 template <size_t _Ip, class _Tp, size_t _Size>
319 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
321 get(array<_Tp, _Size>&& __a) _NOEXCEPT
323 static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array &&)");
324 return _VSTD::move(__a.__elems_[_Ip]);
327 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
329 _LIBCPP_END_NAMESPACE_STD
331 #endif // _LIBCPP_ARRAY