libcxx initial import
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/array b/include/array
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+// -*- C++ -*-
+//===---------------------------- array -----------------------------------===//
+//
+// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_ARRAY
+#define _LIBCPP_ARRAY
+
+/*
+ array synopsis
+
+namespace std
+{
+template <class T, size_t N >
+struct array
+{
+ // types:
+ typedef T & reference;
+ typedef const T & const_reference;
+ typedef implementation defined iterator;
+ typedef implementation defined const_iterator;
+ typedef size_t size_type;
+ typedef ptrdiff_t difference_type;
+ typedef T value_type;
+ typedef T* pointer;
+ typedef const T* const_pointer;
+ typedef std::reverse_iterator<iterator> reverse_iterator;
+ typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+ // No explicit construct/copy/destroy for aggregate type
+ void fill(const T& u);
+ void swap(array& a);
+
+ // iterators:
+ iterator begin();
+ const_iterator begin() const;
+ iterator end();
+ const_iterator end() const;
+
+ reverse_iterator rbegin();
+ const_reverse_iterator rbegin() const;
+ reverse_iterator rend();
+ const_reverse_iterator rend() const;
+
+ const_iterator cbegin() const;
+ const_iterator cend() const;
+ const_reverse_iterator crbegin() const;
+ const_reverse_iterator crend() const;
+
+ // capacity:
+ constexpr size_type size() const;
+ constexpr size_type max_size() const;
+ bool empty() const;
+
+ // element access:
+ reference operator[](size_type n);
+ const_reference operator[](size_type n) const;
+ const_reference at(size_type n) const;
+ reference at(size_type n);
+
+ reference front();
+ const_reference front() const;
+ reference back();
+ const_reference back() const;
+
+ T* data();
+ const T* data() const;
+};
+
+template <class T, size_t N>
+ bool operator==(const array<T,N>& x, const array<T,N>& y);
+template <class T, size_t N>
+ bool operator!=(const array<T,N>& x, const array<T,N>& y);
+template <class T, size_t N>
+ bool operator<(const array<T,N>& x, const array<T,N>& y);
+template <class T, size_t N>
+ bool operator>(const array<T,N>& x, const array<T,N>& y);
+template <class T, size_t N>
+ bool operator<=(const array<T,N>& x, const array<T,N>& y);
+template <class T, size_t N>
+ bool operator>=(const array<T,N>& x, const array<T,N>& y);
+
+template <class T, size_t N >
+ void swap(array<T,N>& x, array<T,N>& y);
+
+template <class T> class tuple_size;
+template <int I, class T> class tuple_element;
+template <class T, size_t N> struct tuple_size<array<T, N>>;
+template <int I, class T, size_t N> struct tuple_element<I, array<T, N>>;
+template <int I, class T, size_t N> T& get(array<T, N>&);
+template <int I, class T, size_t N> const T& get(const array<T, N>&);
+
+} // std
+
+*/
+
+#include <__config>
+#include <__tuple>
+#include <type_traits>
+#include <utility>
+#include <iterator>
+#include <algorithm>
+#include <stdexcept>
+#if defined(_LIBCPP_NO_EXCEPTIONS)
+ #include <cassert>
+#endif
+
+#pragma GCC system_header
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp, size_t _Size>
+struct array
+{
+ // types:
+ typedef array __self;
+ typedef _Tp value_type;
+ typedef value_type& reference;
+ typedef const value_type& const_reference;
+ typedef value_type* iterator;
+ typedef const value_type* const_iterator;
+ typedef value_type* pointer;
+ typedef const value_type* const_pointer;
+ typedef size_t size_type;
+ typedef ptrdiff_t difference_type;
+ typedef std::reverse_iterator<iterator> reverse_iterator;
+ typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+ value_type __elems_[_Size > 0 ? _Size : 1];
+
+ // No explicit construct/copy/destroy for aggregate type
+ _LIBCPP_INLINE_VISIBILITY void fill(const value_type& __u) {_STD::fill_n(__elems_, _Size, __u);}
+ _LIBCPP_INLINE_VISIBILITY void swap(array& __a) {_STD::swap_ranges(__elems_, __elems_ + _Size, __a.__elems_);}
+
+ // iterators:
+ _LIBCPP_INLINE_VISIBILITY iterator begin() {return iterator(__elems_);}
+ _LIBCPP_INLINE_VISIBILITY const_iterator begin() const {return const_iterator(__elems_);}
+ _LIBCPP_INLINE_VISIBILITY iterator end() {return iterator(__elems_ + _Size);}
+ _LIBCPP_INLINE_VISIBILITY const_iterator end() const {return const_iterator(__elems_ + _Size);}
+
+ _LIBCPP_INLINE_VISIBILITY reverse_iterator rbegin() {return reverse_iterator(end());}
+ _LIBCPP_INLINE_VISIBILITY const_reverse_iterator rbegin() const {return const_reverse_iterator(end());}
+ _LIBCPP_INLINE_VISIBILITY reverse_iterator rend() {return reverse_iterator(begin());}
+ _LIBCPP_INLINE_VISIBILITY const_reverse_iterator rend() const {return const_reverse_iterator(begin());}
+
+ _LIBCPP_INLINE_VISIBILITY const_iterator cbegin() const {return begin();}
+ _LIBCPP_INLINE_VISIBILITY const_iterator cend() const {return end();}
+ _LIBCPP_INLINE_VISIBILITY const_reverse_iterator crbegin() const {return rbegin();}
+ _LIBCPP_INLINE_VISIBILITY const_reverse_iterator crend() const {return rend();}
+
+ // capacity:
+ _LIBCPP_INLINE_VISIBILITY /*constexpr*/ size_type size() const {return _Size;}
+ _LIBCPP_INLINE_VISIBILITY /*constexpr*/ size_type max_size() const {return _Size;}
+ _LIBCPP_INLINE_VISIBILITY bool empty() const {return _Size == 0;}
+
+ // element access:
+ _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __n) {return __elems_[__n];}
+ _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __n) const {return __elems_[__n];}
+ reference at(size_type __n);
+ const_reference at(size_type __n) const;
+
+ _LIBCPP_INLINE_VISIBILITY reference front() {return __elems_[0];}
+ _LIBCPP_INLINE_VISIBILITY const_reference front() const {return __elems_[0];}
+ _LIBCPP_INLINE_VISIBILITY reference back() {return __elems_[_Size > 0 ? _Size-1 : 0];}
+ _LIBCPP_INLINE_VISIBILITY const_reference back() const {return __elems_[_Size > 0 ? _Size-1 : 0];}
+
+ _LIBCPP_INLINE_VISIBILITY value_type* data() {return __elems_;}
+ _LIBCPP_INLINE_VISIBILITY const value_type* data() const {return __elems_;}
+};
+
+template <class _Tp, size_t _Size>
+typename array<_Tp, _Size>::reference
+array<_Tp, _Size>::at(size_type __n)
+{
+ if (__n >= _Size)
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ throw out_of_range("array::at");
+#else
+ assert(!"array::at out_of_range");
+#endif
+ return __elems_[__n];
+}
+
+template <class _Tp, size_t _Size>
+typename array<_Tp, _Size>::const_reference
+array<_Tp, _Size>::at(size_type __n) const
+{
+ if (__n >= _Size)
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ throw out_of_range("array::at");
+#else
+ assert(!"array::at out_of_range");
+#endif
+ return __elems_[__n];
+}
+
+template <class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+bool
+operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+ return _STD::equal(__x.__elems_, __x.__elems_ + _Size, __y.__elems_);
+}
+
+template <class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+bool
+operator!=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+ return !(__x == __y);
+}
+
+template <class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+bool
+operator<(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+ return _STD::lexicographical_compare(__x.__elems_, __x.__elems_ + _Size, __y.__elems_, __y.__elems_ + _Size);
+}
+
+template <class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+bool
+operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+ return __y < __x;
+}
+
+template <class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+bool
+operator<=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+ return !(__y < __x);
+}
+
+template <class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+bool
+operator>=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+ return !(__x < __y);
+}
+
+template <class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+void
+swap(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+ __x.swap(__y);
+}
+
+template <class _Tp, size_t _Size>
+ class tuple_size<array<_Tp, _Size> > : public integral_constant<size_t, _Size> {};
+
+template <class _Tp, size_t _Size>
+ class tuple_size<const array<_Tp, _Size> > : public integral_constant<size_t, _Size> {};
+
+template <size_t _Ip, class _Tp, size_t _Size>
+class tuple_element<_Ip, array<_Tp, _Size> >
+{
+public:
+ typedef _Tp type;
+};
+
+template <size_t _Ip, class _Tp, size_t _Size>
+class tuple_element<_Ip, const array<_Tp, _Size> >
+{
+public:
+ typedef const _Tp type;
+};
+
+template <size_t _Ip, class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+_Tp&
+get(array<_Tp, _Size>& __a)
+{
+ return __a[_Ip];
+}
+
+template <size_t _Ip, class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY inline
+const _Tp&
+get(const array<_Tp, _Size>& __a)
+{
+ return __a[_Ip];
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_ARRAY
